<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by DFIN XBRL Schema Document - http://www.dfinsolutions.com/ - on 24-06-2026 06:57:43 AM -->
<!-- Copyright(c) 2026 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<schema targetNamespace="http://www.ishares.com/20260623" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:ist="http://www.ishares.com/20260623" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:srt-types="http://fasb.org/srt-types/2025" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:oef="http://xbrl.sec.gov/oef/2025" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:us-gaap="http://fasb.org/us-gaap/2025" xmlns:oef-pre="http://xbrl.sec.gov/oef-pre/2025" xmlns:oef-lab="http://xbrl.sec.gov/oef-lab/2025" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:us-roles="http://fasb.org/us-roles/2025" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-types="http://fasb.org/us-types/2025" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:oef-def="http://xbrl.sec.gov/oef-def/2025" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:srt="http://fasb.org/srt/2025" xmlns:oef-sr="http://xbrl.sec.gov/oef-sr/2025" xmlns:srt-roles="http://fasb.org/srt-roles/2025" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:stpr="http://xbrl.sec.gov/stpr/2025" elementFormDefault="qualified">
	<import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
	<import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
	<import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
	<import namespace="http://fasb.org/us-types/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.xsd"/>
	<import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>   
	<import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd"/>
	<import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
	<import namespace="http://fasb.org/srt-types/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd"/>
	<import namespace="http://xbrl.sec.gov/oef-sr/2025" schemaLocation="https://xbrl.sec.gov/oef/2025/oef-sr-2025.xsd"/>
	<import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/>
	<import namespace="http://fasb.org/us-roles/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd"/>
	<import namespace="http://fasb.org/srt-roles/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-roles-2025.xsd"/>
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				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReport" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReport"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportHoldingsDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportLineGraphDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportAverageAnnualReturnDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly"/>
				<link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd#eedm"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#LargestHoldingOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other1CategoryOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#AdditionalIndexOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#BroadBasedIndexOnly"/>
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					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSMarketIndexMember" xlink:label="MorningstarUSMarketIndexMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BroadBasedIndexDomain" xlink:to="MorningstarUSMarketIndexMember" order="3.0"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly">              
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AdditionalIndexDomain" xlink:label="AdditionalIndexDomain"/>
					<link:loc xlink:type="locator" xlink:href="#ist_DowJonesUSSelectDividendIndexMember" xlink:label="DowJonesUSSelectDividendIndexMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="DowJonesUSSelectDividendIndexMember" order="1.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSLargeMidCapIndexSplicedMember" xlink:label="MorningstarUSLargeMidCapIndexSplicedMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="MorningstarUSLargeMidCapIndexSplicedMember" order="2.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSLargeMidCapBroadValueIndexSplicedMember" xlink:label="MorningstarUSLargeMidCapBroadValueIndexSplicedMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="MorningstarUSLargeMidCapBroadValueIndexSplicedMember" order="3.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSMidCapBroadValueIndexSplicedMember" xlink:label="MorningstarUSMidCapBroadValueIndexSplicedMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="MorningstarUSMidCapBroadValueIndexSplicedMember" order="4.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSSmallCapExtendedIndexSplicedMember" xlink:label="MorningstarUSSmallCapExtendedIndexSplicedMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="MorningstarUSSmallCapExtendedIndexSplicedMember" order="5.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_FTSENareitEquityREITS40ActCappedIndexSplicedMember" xlink:label="FTSENareitEquityREITS40ActCappedIndexSplicedMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="FTSENareitEquityREITS40ActCappedIndexSplicedMember" order="6.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarDividendYieldFocusIndexMember" xlink:label="MorningstarDividendYieldFocusIndexMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="MorningstarDividendYieldFocusIndexMember" order="7.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSDividendGrowthIndexMember" xlink:label="MorningstarUSDividendGrowthIndexMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="MorningstarUSDividendGrowthIndexMember" order="8.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSDividendAndBuybackIndexMember" xlink:label="MorningstarUSDividendAndBuybackIndexMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="MorningstarUSDividendAndBuybackIndexMember" order="9.0"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/MaturityOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_MaturityDomain" xlink:label="MaturityDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/IndustrySectorOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_IndustrySectorDomain" xlink:label="IndustrySectorDomain"/>
					<link:loc xlink:type="locator" xlink:href="#ist_SpecializedREITsMember" xlink:label="SpecializedREITsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="SpecializedREITsMember" order="1.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_HealthCareREITsMember" xlink:label="HealthCareREITsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="HealthCareREITsMember" order="2.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_RetailREITsMember" xlink:label="RetailREITsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="RetailREITsMember" order="3.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ResidentialREITsMember" xlink:label="ResidentialREITsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="ResidentialREITsMember" order="4.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_IndustrialREITsMember" xlink:label="IndustrialREITsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="IndustrialREITsMember" order="5.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_OfficeREITsMember" xlink:label="OfficeREITsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="OfficeREITsMember" order="6.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_HotelAndResortREITsMember" xlink:label="HotelAndResortREITsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="HotelAndResortREITsMember" order="7.0"/>
					<link:loc xlink:type="locator" xlink:href="#ist_DiversifiedREITsMember" xlink:label="DiversifiedREITsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="DiversifiedREITsMember" order="8.0"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CreditQualityOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_CreditQualityDomain" xlink:label="CreditQualityDomain"/>
				</link:definitionLink>
				<!--GeographicRegionOnly use only for STPR-->
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/GeographicRegionOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_GeographicRegionDomain" xlink:label="GeographicRegionDomain"/>
				</link:definitionLink>
				<link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">               
					<link:loc xlink:type="locator" xlink:href="#ist_DowJonesUSSelectDividendIndexMember" xlink:label="DowJonesUSSelectDividendIndexMember"/>
					<link:label xlink:type="resource" xlink:label="label_DowJonesUSSelectDividendIndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Dow Jones U S Select Dividend Index [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DowJonesUSSelectDividendIndexMember" xlink:to="label_DowJonesUSSelectDividendIndexMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_SAndPTotalMarketIndexMember" xlink:label="SAndPTotalMarketIndexMember"/>
					<link:label xlink:type="resource" xlink:label="label_SAndPTotalMarketIndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">S And P Total Market Index [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SAndPTotalMarketIndexMember" xlink:to="label_SAndPTotalMarketIndexMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_GeneralMillsIncMember" xlink:label="GeneralMillsIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_GeneralMillsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">General Mills Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GeneralMillsIncMember" xlink:to="label_GeneralMillsIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_LyondellBasellIndustriesNVClassAMember" xlink:label="LyondellBasellIndustriesNVClassAMember"/>
					<link:label xlink:type="resource" xlink:label="label_LyondellBasellIndustriesNVClassAMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">LyondellBasell Industries NV Class A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LyondellBasellIndustriesNVClassAMember" xlink:to="label_LyondellBasellIndustriesNVClassAMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_EdisonInternationalMember" xlink:label="EdisonInternationalMember"/>
					<link:label xlink:type="resource" xlink:label="label_EdisonInternationalMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Edison International [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EdisonInternationalMember" xlink:to="label_EdisonInternationalMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_HPIncMember" xlink:label="HPIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_HPIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">HP Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HPIncMember" xlink:to="label_HPIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ONEOKIncMember" xlink:label="ONEOKIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_ONEOKIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">ONEOK Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ONEOKIncMember" xlink:to="label_ONEOKIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_PrudentialFinancialIncMember" xlink:label="PrudentialFinancialIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_PrudentialFinancialIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Prudential Financial Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrudentialFinancialIncMember" xlink:to="label_PrudentialFinancialIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_VerizonCommunicationsIncMember" xlink:label="VerizonCommunicationsIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_VerizonCommunicationsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Verizon Communications Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VerizonCommunicationsIncMember" xlink:to="label_VerizonCommunicationsIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_TRowePriceGroupIncMember" xlink:label="TRowePriceGroupIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_TRowePriceGroupIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">T Rowe Price Group Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TRowePriceGroupIncMember" xlink:to="label_TRowePriceGroupIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_PfizerIncMember" xlink:label="PfizerIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_PfizerIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Pfizer Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PfizerIncMember" xlink:to="label_PfizerIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_AltriaGroupIncMember" xlink:label="AltriaGroupIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_AltriaGroupIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Altria Group Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AltriaGroupIncMember" xlink:to="label_AltriaGroupIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000012064Member" xlink:label="C000012064Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000012064Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000012064 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000012064Member" xlink:to="label_C000012064Member"/>
										<link:label xlink:type="resource" xlink:label="label_C000012064Member_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US">Class Composite</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000012064Member" xlink:to="label_C000012064Member_2"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000012097Member" xlink:label="C000012097Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000012097Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000012097 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000012097Member" xlink:to="label_C000012097Member"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSLargeMidCapIndexSplicedMember" xlink:label="MorningstarUSLargeMidCapIndexSplicedMember"/>
					<link:label xlink:type="resource" xlink:label="label_MorningstarUSLargeMidCapIndexSplicedMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Morningstar US Large Mid Cap Index Spliced [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MorningstarUSLargeMidCapIndexSplicedMember" xlink:to="label_MorningstarUSLargeMidCapIndexSplicedMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_NVIDIACorpMember" xlink:label="NVIDIACorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_NVIDIACorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">NVIDIA Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NVIDIACorpMember" xlink:to="label_NVIDIACorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_AmazonComIncMember" xlink:label="AmazonComIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_AmazonComIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Amazon com Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmazonComIncMember" xlink:to="label_AmazonComIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_AlphabetIncClassAMember" xlink:label="AlphabetIncClassAMember"/>
					<link:label xlink:type="resource" xlink:label="label_AlphabetIncClassAMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Alphabet Inc Class A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlphabetIncClassAMember" xlink:to="label_AlphabetIncClassAMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_AlphabetIncClassCNVSMember" xlink:label="AlphabetIncClassCNVSMember"/>
					<link:label xlink:type="resource" xlink:label="label_AlphabetIncClassCNVSMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Alphabet Inc Class C NVS [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlphabetIncClassCNVSMember" xlink:to="label_AlphabetIncClassCNVSMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MetaPlatformsIncClassAMember" xlink:label="MetaPlatformsIncClassAMember"/>
					<link:label xlink:type="resource" xlink:label="label_MetaPlatformsIncClassAMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Meta Platforms Inc Class A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MetaPlatformsIncClassAMember" xlink:to="label_MetaPlatformsIncClassAMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_TeslaIncMember" xlink:label="TeslaIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_TeslaIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Tesla Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TeslaIncMember" xlink:to="label_TeslaIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_BerkshireHathawayIncClassBMember" xlink:label="BerkshireHathawayIncClassBMember"/>
					<link:label xlink:type="resource" xlink:label="label_BerkshireHathawayIncClassBMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Berkshire Hathaway Inc Class B [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BerkshireHathawayIncClassBMember" xlink:to="label_BerkshireHathawayIncClassBMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSLargeMidCapBroadValueIndexSplicedMember" xlink:label="MorningstarUSLargeMidCapBroadValueIndexSplicedMember"/>
					<link:label xlink:type="resource" xlink:label="label_MorningstarUSLargeMidCapBroadValueIndexSplicedMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Morningstar US Large Mid Cap Broad Value Index Spliced [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MorningstarUSLargeMidCapBroadValueIndexSplicedMember" xlink:to="label_MorningstarUSLargeMidCapBroadValueIndexSplicedMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000012099Member" xlink:label="C000012099Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000012099Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000012099 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000012099Member" xlink:to="label_C000012099Member"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000012195Member" xlink:label="C000012195Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000012195Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000012195 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000012195Member" xlink:to="label_C000012195Member"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSMidCapBroadValueIndexSplicedMember" xlink:label="MorningstarUSMidCapBroadValueIndexSplicedMember"/>
					<link:label xlink:type="resource" xlink:label="label_MorningstarUSMidCapBroadValueIndexSplicedMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Morningstar US Mid Cap Broad Value Index Spliced [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MorningstarUSMidCapBroadValueIndexSplicedMember" xlink:to="label_MorningstarUSMidCapBroadValueIndexSplicedMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_NewmontCorpMember" xlink:label="NewmontCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_NewmontCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Newmont Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NewmontCorpMember" xlink:to="label_NewmontCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_WilliamsCosIncTheMember" xlink:label="WilliamsCosIncTheMember"/>
					<link:label xlink:type="resource" xlink:label="label_WilliamsCosIncTheMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Williams Cos Inc The [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WilliamsCosIncTheMember" xlink:to="label_WilliamsCosIncTheMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_PNCFinancialServicesGroupIncTheMember" xlink:label="PNCFinancialServicesGroupIncTheMember"/>
					<link:label xlink:type="resource" xlink:label="label_PNCFinancialServicesGroupIncTheMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">PNC Financial Services Group Inc The [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PNCFinancialServicesGroupIncTheMember" xlink:to="label_PNCFinancialServicesGroupIncTheMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_FedExCorpMember" xlink:label="FedExCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_FedExCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">FedEx Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FedExCorpMember" xlink:to="label_FedExCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_USBancorpMember" xlink:label="USBancorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_USBancorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Bancorp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USBancorpMember" xlink:to="label_USBancorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_CSXCorpMember" xlink:label="CSXCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_CSXCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">CSX Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CSXCorpMember" xlink:to="label_CSXCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_SLBLtdMember" xlink:label="SLBLtdMember"/>
					<link:label xlink:type="resource" xlink:label="label_SLBLtdMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">SLB Ltd [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SLBLtdMember" xlink:to="label_SLBLtdMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ElevanceHealthIncMember" xlink:label="ElevanceHealthIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_ElevanceHealthIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Elevance Health Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ElevanceHealthIncMember" xlink:to="label_ElevanceHealthIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_UnitedParcelServiceIncClassBMember" xlink:label="UnitedParcelServiceIncClassBMember"/>
					<link:label xlink:type="resource" xlink:label="label_UnitedParcelServiceIncClassBMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">United Parcel Service Inc Class B [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnitedParcelServiceIncClassBMember" xlink:to="label_UnitedParcelServiceIncClassBMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MondelezInternationalIncClassAMember" xlink:label="MondelezInternationalIncClassAMember"/>
					<link:label xlink:type="resource" xlink:label="label_MondelezInternationalIncClassAMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Mondelez International Inc Class A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MondelezInternationalIncClassAMember" xlink:to="label_MondelezInternationalIncClassAMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_OvintivIncMember" xlink:label="OvintivIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_OvintivIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Ovintiv Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OvintivIncMember" xlink:to="label_OvintivIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MACOMTechnologySolutionsHoldingsIncMember" xlink:label="MACOMTechnologySolutionsHoldingsIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_MACOMTechnologySolutionsHoldingsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">MACOM Technology Solutions Holdings Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MACOMTechnologySolutionsHoldingsIncMember" xlink:to="label_MACOMTechnologySolutionsHoldingsIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_CoeurMiningIncMember" xlink:label="CoeurMiningIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_CoeurMiningIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Coeur Mining Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CoeurMiningIncMember" xlink:to="label_CoeurMiningIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_RBCBearingsIncMember" xlink:label="RBCBearingsIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_RBCBearingsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">RBC Bearings Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RBCBearingsIncMember" xlink:to="label_RBCBearingsIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ITTIncMember" xlink:label="ITTIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_ITTIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">ITT Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ITTIncMember" xlink:to="label_ITTIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_CFIndustriesHoldingsIncMember" xlink:label="CFIndustriesHoldingsIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_CFIndustriesHoldingsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">CF Industries Holdings Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CFIndustriesHoldingsIncMember" xlink:to="label_CFIndustriesHoldingsIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ATIIncMember" xlink:label="ATIIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_ATIIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">ATI Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ATIIncMember" xlink:to="label_ATIIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_AlbemarleCorpMember" xlink:label="AlbemarleCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_AlbemarleCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Albemarle Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlbemarleCorpMember" xlink:to="label_AlbemarleCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_RevolutionMedicinesIncMember" xlink:label="RevolutionMedicinesIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_RevolutionMedicinesIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Revolution Medicines Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevolutionMedicinesIncMember" xlink:to="label_RevolutionMedicinesIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_LumentumHoldingsIncMember" xlink:label="LumentumHoldingsIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_LumentumHoldingsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Lumentum Holdings Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LumentumHoldingsIncMember" xlink:to="label_LumentumHoldingsIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSSmallCapExtendedIndexSplicedMember" xlink:label="MorningstarUSSmallCapExtendedIndexSplicedMember"/>
					<link:label xlink:type="resource" xlink:label="label_MorningstarUSSmallCapExtendedIndexSplicedMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Morningstar US Small Cap Extended Index Spliced [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MorningstarUSSmallCapExtendedIndexSplicedMember" xlink:to="label_MorningstarUSSmallCapExtendedIndexSplicedMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000012196Member" xlink:label="C000012196Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000012196Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000012196 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000012196Member" xlink:to="label_C000012196Member"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000042588Member" xlink:label="C000042588Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000042588Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000042588 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000042588Member" xlink:to="label_C000042588Member"/>
					<link:loc xlink:type="locator" xlink:href="#ist_Russell3000IndexMember" xlink:label="Russell3000IndexMember"/>
					<link:label xlink:type="resource" xlink:label="label_Russell3000IndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Russell 3000 Index [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Russell3000IndexMember" xlink:to="label_Russell3000IndexMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_FTSENareitEquityREITS40ActCappedIndexSplicedMember" xlink:label="FTSENareitEquityREITS40ActCappedIndexSplicedMember"/>
					<link:label xlink:type="resource" xlink:label="label_FTSENareitEquityREITS40ActCappedIndexSplicedMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">FTSE Nareit Equity REITS 40 Act Capped Index Spliced [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FTSENareitEquityREITS40ActCappedIndexSplicedMember" xlink:to="label_FTSENareitEquityREITS40ActCappedIndexSplicedMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_SpecializedREITsMember" xlink:label="SpecializedREITsMember"/>
					<link:label xlink:type="resource" xlink:label="label_SpecializedREITsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Specialized REITs [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SpecializedREITsMember" xlink:to="label_SpecializedREITsMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_HealthCareREITsMember" xlink:label="HealthCareREITsMember"/>
					<link:label xlink:type="resource" xlink:label="label_HealthCareREITsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Health Care REITs [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HealthCareREITsMember" xlink:to="label_HealthCareREITsMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_RetailREITsMember" xlink:label="RetailREITsMember"/>
					<link:label xlink:type="resource" xlink:label="label_RetailREITsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Retail REITs [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetailREITsMember" xlink:to="label_RetailREITsMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ResidentialREITsMember" xlink:label="ResidentialREITsMember"/>
					<link:label xlink:type="resource" xlink:label="label_ResidentialREITsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Residential REITs [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResidentialREITsMember" xlink:to="label_ResidentialREITsMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_IndustrialREITsMember" xlink:label="IndustrialREITsMember"/>
					<link:label xlink:type="resource" xlink:label="label_IndustrialREITsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Industrial REITs [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndustrialREITsMember" xlink:to="label_IndustrialREITsMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_OfficeREITsMember" xlink:label="OfficeREITsMember"/>
					<link:label xlink:type="resource" xlink:label="label_OfficeREITsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Office REITs [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OfficeREITsMember" xlink:to="label_OfficeREITsMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_HotelAndResortREITsMember" xlink:label="HotelAndResortREITsMember"/>
					<link:label xlink:type="resource" xlink:label="label_HotelAndResortREITsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Hotel And Resort REITs [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HotelAndResortREITsMember" xlink:to="label_HotelAndResortREITsMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_DiversifiedREITsMember" xlink:label="DiversifiedREITsMember"/>
					<link:label xlink:type="resource" xlink:label="label_DiversifiedREITsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Diversified REITs [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DiversifiedREITsMember" xlink:to="label_DiversifiedREITsMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_WelltowerIncMember" xlink:label="WelltowerIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_WelltowerIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Welltower Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WelltowerIncMember" xlink:to="label_WelltowerIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_PrologisIncMember" xlink:label="PrologisIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_PrologisIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Prologis Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrologisIncMember" xlink:to="label_PrologisIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_EquinixIncMember" xlink:label="EquinixIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_EquinixIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Equinix Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquinixIncMember" xlink:to="label_EquinixIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_DigitalRealtyTrustIncMember" xlink:label="DigitalRealtyTrustIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_DigitalRealtyTrustIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Digital Realty Trust Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DigitalRealtyTrustIncMember" xlink:to="label_DigitalRealtyTrustIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_SimonPropertyGroupIncMember" xlink:label="SimonPropertyGroupIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_SimonPropertyGroupIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Simon Property Group Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SimonPropertyGroupIncMember" xlink:to="label_SimonPropertyGroupIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_RealtyIncomeCorpMember" xlink:label="RealtyIncomeCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_RealtyIncomeCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Realty Income Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RealtyIncomeCorpMember" xlink:to="label_RealtyIncomeCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_PublicStorageMember" xlink:label="PublicStorageMember"/>
					<link:label xlink:type="resource" xlink:label="label_PublicStorageMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Public Storage [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicStorageMember" xlink:to="label_PublicStorageMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_VentasIncMember" xlink:label="VentasIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_VentasIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Ventas Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VentasIncMember" xlink:to="label_VentasIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_IronMountainIncMember" xlink:label="IronMountainIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_IronMountainIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Iron Mountain Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IronMountainIncMember" xlink:to="label_IronMountainIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_VICIPropertiesIncMember" xlink:label="VICIPropertiesIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_VICIPropertiesIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">VICI Properties Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VICIPropertiesIncMember" xlink:to="label_VICIPropertiesIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ProgressiveCorpTheMember" xlink:label="ProgressiveCorpTheMember"/>
					<link:label xlink:type="resource" xlink:label="label_ProgressiveCorpTheMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Progressive Corp The [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProgressiveCorpTheMember" xlink:to="label_ProgressiveCorpTheMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_CocaColaCoTheMember" xlink:label="CocaColaCoTheMember"/>
					<link:label xlink:type="resource" xlink:label="label_CocaColaCoTheMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Coca Cola Co The [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CocaColaCoTheMember" xlink:to="label_CocaColaCoTheMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_HomeDepotIncTheMember" xlink:label="HomeDepotIncTheMember"/>
					<link:label xlink:type="resource" xlink:label="label_HomeDepotIncTheMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Home Depot Inc The [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HomeDepotIncTheMember" xlink:to="label_HomeDepotIncTheMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MerckAndCoIncMember" xlink:label="MerckAndCoIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_MerckAndCoIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Merck And Co Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MerckAndCoIncMember" xlink:to="label_MerckAndCoIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ProgressiveCorpMember" xlink:label="ProgressiveCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_ProgressiveCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Progressive Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProgressiveCorpMember" xlink:to="label_ProgressiveCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_CocaColaCoMember" xlink:label="CocaColaCoMember"/>
					<link:label xlink:type="resource" xlink:label="label_CocaColaCoMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Coca Cola Co [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CocaColaCoMember" xlink:to="label_CocaColaCoMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_HomeDepotIncMember" xlink:label="HomeDepotIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_HomeDepotIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Home Depot Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HomeDepotIncMember" xlink:to="label_HomeDepotIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ChevronCorpMember" xlink:label="ChevronCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_ChevronCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Chevron Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ChevronCorpMember" xlink:to="label_ChevronCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarDividendYieldFocusIndexMember" xlink:label="MorningstarDividendYieldFocusIndexMember"/>
					<link:label xlink:type="resource" xlink:label="label_MorningstarDividendYieldFocusIndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Morningstar Dividend Yield Focus Index [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MorningstarDividendYieldFocusIndexMember" xlink:to="label_MorningstarDividendYieldFocusIndexMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSMarketIndexMember" xlink:label="MorningstarUSMarketIndexMember"/>
					<link:label xlink:type="resource" xlink:label="label_MorningstarUSMarketIndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Morningstar US Market Index [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MorningstarUSMarketIndexMember" xlink:to="label_MorningstarUSMarketIndexMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000099165Member" xlink:label="C000099165Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000099165Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000099165 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000099165Member" xlink:to="label_C000099165Member"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnergySectorMember" xlink:label="EnergySectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_EnergySectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Energy Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnergySectorMember" xlink:to="label_EnergySectorMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialServicesSectorMember" xlink:label="FinancialServicesSectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_FinancialServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Financial Services Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialServicesSectorMember" xlink:to="label_FinancialServicesSectorMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HealthcareSectorMember" xlink:label="HealthcareSectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_HealthcareSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Healthcare Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HealthcareSectorMember" xlink:to="label_HealthcareSectorMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000141931Member" xlink:label="C000141931Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000141931Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000141931 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000141931Member" xlink:to="label_C000141931Member"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSDividendGrowthIndexMember" xlink:label="MorningstarUSDividendGrowthIndexMember"/>
					<link:label xlink:type="resource" xlink:label="label_MorningstarUSDividendGrowthIndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Morningstar US Dividend Growth Index [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MorningstarUSDividendGrowthIndexMember" xlink:to="label_MorningstarUSDividendGrowthIndexMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_BroadcomIncMember" xlink:label="BroadcomIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_BroadcomIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Broadcom Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BroadcomIncMember" xlink:to="label_BroadcomIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_JPMorganChaseAndCoMember" xlink:label="JPMorganChaseAndCoMember"/>
					<link:label xlink:type="resource" xlink:label="label_JPMorganChaseAndCoMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">JPMorgan Chase And Co [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="JPMorganChaseAndCoMember" xlink:to="label_JPMorganChaseAndCoMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_AppleIncMember" xlink:label="AppleIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_AppleIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Apple Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AppleIncMember" xlink:to="label_AppleIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MicrosoftCorpMember" xlink:label="MicrosoftCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_MicrosoftCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Microsoft Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MicrosoftCorpMember" xlink:to="label_MicrosoftCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ExxonMobilCorpMember" xlink:label="ExxonMobilCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_ExxonMobilCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Exxon Mobil Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExxonMobilCorpMember" xlink:to="label_ExxonMobilCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_JohnsonAndJohnsonMember" xlink:label="JohnsonAndJohnsonMember"/>
					<link:label xlink:type="resource" xlink:label="label_JohnsonAndJohnsonMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Johnson And Johnson [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="JohnsonAndJohnsonMember" xlink:to="label_JohnsonAndJohnsonMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_AbbVieIncMember" xlink:label="AbbVieIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_AbbVieIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AbbVie Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AbbVieIncMember" xlink:to="label_AbbVieIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_UnitedHealthGroupIncMember" xlink:label="UnitedHealthGroupIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_UnitedHealthGroupIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">UnitedHealth Group Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnitedHealthGroupIncMember" xlink:to="label_UnitedHealthGroupIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_ProcterAndGambleCoTheMember" xlink:label="ProcterAndGambleCoTheMember"/>
					<link:label xlink:type="resource" xlink:label="label_ProcterAndGambleCoTheMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Procter And Gamble Co The [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProcterAndGambleCoTheMember" xlink:to="label_ProcterAndGambleCoTheMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_PhilipMorrisInternationalIncMember" xlink:label="PhilipMorrisInternationalIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_PhilipMorrisInternationalIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Philip Morris International Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PhilipMorrisInternationalIncMember" xlink:to="label_PhilipMorrisInternationalIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_BankOfAmericaCorpMember" xlink:label="BankOfAmericaCorpMember"/>
					<link:label xlink:type="resource" xlink:label="label_BankOfAmericaCorpMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Bank of America Corp [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOfAmericaCorpMember" xlink:to="label_BankOfAmericaCorpMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_WellsFargoAndCoMember" xlink:label="WellsFargoAndCoMember"/>
					<link:label xlink:type="resource" xlink:label="label_WellsFargoAndCoMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Wells Fargo And Co [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WellsFargoAndCoMember" xlink:to="label_WellsFargoAndCoMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_DellTechnologiesIncClassCMember" xlink:label="DellTechnologiesIncClassCMember"/>
					<link:label xlink:type="resource" xlink:label="label_DellTechnologiesIncClassCMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Dell Technologies Inc Class C [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DellTechnologiesIncClassCMember" xlink:to="label_DellTechnologiesIncClassCMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_AccenturePLCClassAMember" xlink:label="AccenturePLCClassAMember"/>
					<link:label xlink:type="resource" xlink:label="label_AccenturePLCClassAMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Accenture PLC Class A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccenturePLCClassAMember" xlink:to="label_AccenturePLCClassAMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_TexasInstrumentsIncMember" xlink:label="TexasInstrumentsIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_TexasInstrumentsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Texas Instruments Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TexasInstrumentsIncMember" xlink:to="label_TexasInstrumentsIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_QUALCOMMIncMember" xlink:label="QUALCOMMIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_QUALCOMMIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">QUALCOMM Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="QUALCOMMIncMember" xlink:to="label_QUALCOMMIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_CiscoSystemsIncMember" xlink:label="CiscoSystemsIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_CiscoSystemsIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Cisco Systems Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CiscoSystemsIncMember" xlink:to="label_CiscoSystemsIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_MorningstarUSDividendAndBuybackIndexMember" xlink:label="MorningstarUSDividendAndBuybackIndexMember"/>
					<link:label xlink:type="resource" xlink:label="label_MorningstarUSDividendAndBuybackIndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Morningstar US Dividend and Buyback Index [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MorningstarUSDividendAndBuybackIndexMember" xlink:to="label_MorningstarUSDividendAndBuybackIndexMember"/>
					<link:loc xlink:type="locator" xlink:href="#ist_C000194634Member" xlink:label="C000194634Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000194634Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000194634 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000194634Member" xlink:to="label_C000194634Member"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateSectorMember" xlink:label="RealEstateSectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_RealEstateSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Real Estate Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RealEstateSectorMember" xlink:to="label_RealEstateSectorMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeAxis" xlink:label="InvestmentTypeAxis"/>
					<link:label xlink:type="resource" xlink:label="label_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Investment Type [Axis]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentTypeAxis" xlink:to="label_InvestmentTypeAxis" priority="1"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNet" xlink:label="AssetsNet"/>
					<link:label xlink:type="resource" xlink:label="label_AssetsNet" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Net Assets</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNet" xlink:to="label_AssetsNet" priority="1"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentCompanyPortfolioTurnover" xlink:label="InvestmentCompanyPortfolioTurnover"/>
					<link:label xlink:type="resource" xlink:label="label_InvestmentCompanyPortfolioTurnover" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Investment Company Portfolio Turnover</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentCompanyPortfolioTurnover" xlink:to="label_InvestmentCompanyPortfolioTurnover" priority="1"/>                
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoTradingSymbolFlag" xlink:label="dei_NoTradingSymbolFlag"/>
					<link:label xlink:type="resource" xlink:label="label_NoTradingSymbolFlag" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">No Trading Symbol Flag</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_NoTradingSymbolFlag" xlink:to="label_NoTradingSymbolFlag" priority="1"/>		
				</link:labelLink>
			</link:linkbase>
		</appinfo>
	</annotation>   
	<element name="DowJonesUSSelectDividendIndexMember" id="ist_DowJonesUSSelectDividendIndexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="SAndPTotalMarketIndexMember" id="ist_SAndPTotalMarketIndexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="GeneralMillsIncMember" id="ist_GeneralMillsIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="LyondellBasellIndustriesNVClassAMember" id="ist_LyondellBasellIndustriesNVClassAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="EdisonInternationalMember" id="ist_EdisonInternationalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="HPIncMember" id="ist_HPIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="ONEOKIncMember" id="ist_ONEOKIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="PrudentialFinancialIncMember" id="ist_PrudentialFinancialIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="VerizonCommunicationsIncMember" id="ist_VerizonCommunicationsIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="TRowePriceGroupIncMember" id="ist_TRowePriceGroupIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="PfizerIncMember" id="ist_PfizerIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AltriaGroupIncMember" id="ist_AltriaGroupIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000012064Member" id="ist_C000012064Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000012097Member" id="ist_C000012097Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="MorningstarUSLargeMidCapIndexSplicedMember" id="ist_MorningstarUSLargeMidCapIndexSplicedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
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	<element name="AmazonComIncMember" id="ist_AmazonComIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
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</schema>
