<?xml version="1.0" encoding="US-ASCII" ?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5b -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
    <!-- Field: Doc-Info; Name: Misc; Value: /q85o7xRiXgen8uLaXFcOaCE+cPtwJV7eYkhumlwfakaPycsZRCUYitdTg5GYdUM -->
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:dei="http://xbrl.sec.gov/dei/2026" xmlns:us-gaap="http://fasb.org/us-gaap/2026" xmlns:oef="http://xbrl.sec.gov/oef/2026" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:horz="http://horizonmutualfunds.com/20260624" elementFormDefault="qualified" targetNamespace="http://horizonmutualfunds.com/20260624">
    <annotation>
      <appinfo>
        <link:linkbaseRef xlink:type="simple" xlink:href="horz-20260624_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Presentation Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="horz-20260624_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="horz-20260624_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links" />
      </appinfo>
    </annotation>
    <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/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd" />
    <import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd" />
    <import namespace="http://fasb.org/us-types/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-types-2026.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/oef/2026" schemaLocation="https://xbrl.sec.gov/oef/2026/oef-2026.xsd" />
    <import namespace="http://xbrl.sec.gov/oef-rr/2026" schemaLocation="https://xbrl.sec.gov/oef/2026/oef-rr-2026.xsd" />
    <import namespace="http://xbrl.sec.gov/country/2026" schemaLocation="https://xbrl.sec.gov/country/2026/country-2026.xsd" />
    <import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd" />
    <import namespace="http://fasb.org/srt-types/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-types-2026.xsd" />
    <element id="horz_S000101854Member" name="S000101854Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_C000272171Member" name="C000272171Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_YieldCurveRiskMember" name="YieldCurveRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_ManagementRiskMember" name="ManagementRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_MarketRiskMember" name="MarketRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_FixedIncomeSecuritiesRiskMember" name="FixedIncomeSecuritiesRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_CollateralizedLoanObligationsRiskMember" name="CollateralizedLoanObligationsRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_ActiveTradingRiskMember" name="ActiveTradingRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_AuthorizedParticipantConcentrationRiskMember" name="AuthorizedParticipantConcentrationRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_BankLoanRiskMember" name="BankLoanRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_CashRedemptionRiskMember" name="CashRedemptionRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_CommonStockRiskMember" name="CommonStockRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_ConvertibleSecuritiesRiskMember" name="ConvertibleSecuritiesRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_CounterpartyCreditRiskMember" name="CounterpartyCreditRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_CreditSpreadRiskMember" name="CreditSpreadRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_CurrencyRiskMember" name="CurrencyRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_CybersecurityRiskMember" name="CybersecurityRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_DerivativesRiskMember" name="DerivativesRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_OptionsRiskMember" name="OptionsRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_EtfStructureRisksMember" name="EtfStructureRisksMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_FluctuationOfNetAssetValueRiskMember" name="FluctuationOfNetAssetValueRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_ForeignNonUSInvestmentRiskMember" name="ForeignNonUSInvestmentRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_FuturesContractRiskMember" name="FuturesContractRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_GapRiskMember" name="GapRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_HedgingTransactionsRiskMember" name="HedgingTransactionsRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_HighYieldRiskMember" name="HighYieldRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_IndexRiskMember" name="IndexRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_InvestmentCompaniesExchangeTradedFundsRisksMember" name="InvestmentCompaniesExchangeTradedFundsRisksMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_IssuerSpecificRiskMember" name="IssuerSpecificRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_LeveragingRiskMember" name="LeveragingRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_LiquidityRiskMember" name="LiquidityRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_MarketEventsRiskMember" name="MarketEventsRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_MlpRiskMember" name="MlpRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_MortgageBackedAndAssetBackedSecuritiesRiskMember" name="MortgageBackedAndAssetBackedSecuritiesRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_OddLotPricingRiskMember" name="OddLotPricingRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_PortfolioTurnoverRiskMember" name="PortfolioTurnoverRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_PrepaymentAndExtensionRiskMember" name="PrepaymentAndExtensionRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_RegulatoryRiskMember" name="RegulatoryRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_SectorRiskMember" name="SectorRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_SecuritiesLendingRiskMember" name="SecuritiesLendingRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_UnderlyingFundRiskMember" name="UnderlyingFundRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_USGovernmentSecuritiesRiskMember" name="USGovernmentSecuritiesRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_ValuationRiskMember" name="ValuationRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_VariableOrFloatingRateSecuritiesRiskMember" name="VariableOrFloatingRateSecuritiesRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_VolatilityRiskMember" name="VolatilityRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_Index1Member" name="Index1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_S000101853Member" name="S000101853Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_C000272170Member" name="C000272170Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_EquityRiskMember" name="EquityRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_FocusRiskMember" name="FocusRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_LargeCapSecuritiesRiskMember" name="LargeCapSecuritiesRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_ForwardAndFuturesContractRiskMember" name="ForwardAndFuturesContractRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_InvestmentCompaniesExchangeTradedFundsRiskMember" name="InvestmentCompaniesExchangeTradedFundsRiskMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="horz_Index2Member" name="Index2Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
</schema>
