Revised Summary Prospectus

Summary Prospectus May 1, 2026, as supplemented September 22, 2026

VY® T. Rowe Price Diversified Mid Cap Growth Portfolio

Class/Ticker: ADV/IAXAX; I/IAXIX; R6/VYRIX; S/IAXSX; S2/IAXTX

Before you invest, you may want to review the portfolio's Prospectus, which contains more information about the portfolio and its risks. For free paper or electronic copies of the Prospectus and other portfolio information (including the Statement of Additional Information and most recent financial report to shareholders), go to https://individuals.voya.com/literature; email a request to Voyaim_literature@voya.com; call 1-800-262-3862; or ask your salesperson, financial intermediary, or retirement plan administrator. The portfolio's Prospectus and Statement of Additional Information, each dated May 1, 2026, as supplemented, and the audited financial statements that are included in the portfolio’s shareholder report dated December 31, 2025 are incorporated into this Summary Prospectus by reference and may be obtained free of charge at the website, phone number, or e-mail address noted above.

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses of the Portfolio

The table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Portfolio. You may pay other fees and expenses such as fees and expenses imposed under your variable annuity contracts or variable life insurance policies (“Variable Contract”) or a qualified pension or retirement plan (“Qualified Plan”), which are not reflected in the tables and examples below. If these fees or expenses were included in the table, the Portfolio’s expenses would be higher. For more information on these charges, please refer to the documents governing your Variable Contract or Qualified Plan or consult your plan administrator.

Annual Portfolio Operating Expenses1
Expenses you pay each year as a % of the value of your investment

Class		ADV	I	R6	S	S2
Management Fees	%	0.74	0.74	0.74	0.74	0.74
Distribution and/or Shareholder Services (12b-1) Fees	%	0.50	None	None	0.25	0.40
Other Expenses	%	0.26	0.26	0.04	0.26	0.26
Total Annual Portfolio Operating Expenses	%	1.50	1.00	0.78	1.25	1.40
Waivers and Reimbursements2	%	(0.20)	(0.20)	None	(0.20)	(0.20)
Total Annual Portfolio Operating Expenses after Waivers and Reimbursements	%	1.30	0.80	0.78	1.05	1.20

Expense information has been restated to reflect current contractual rates.

Voya Investments, LLC (the “Investment Adviser”) is contractually obligated to limit expenses to 1.30%, 0.80%, 0.80%, 1.05%, and 1.20% for Class ADV, Class I, Class R6, Class S, and Class S2 shares, respectively, through May 1, 2027 (the “Expense Limitation Agreement”). The limitation does not extend to interest, taxes, other investment-related costs, leverage expenses, extraordinary expenses such as litigation or other expenses not incurred in the ordinary course of business, and expenses of any counsel or other persons or services retained by the Directors who are not “interested persons” as that term is defined by the Investment Company Act of 1940, as amended. Modification of the Expense Limitation Agreement requires written agreement signed by each of the parties and approval by the Portfolio’s Board of Directors (the “Board”). The Expense Limitation Agreement shall terminate with respect to the Portfolio upon termination of the Portfolio’s advisory agreement with the Investment Adviser, or it may be terminated by Voya Partners, Inc. (the “Company”), without payment of any penalty, upon written notice to the Investment Adviser at its principal place of business.

Expense Example

This Example is intended to help you compare the cost of investing in shares of the Portfolio with the costs of investing in other mutual funds. The Example does not reflect expenses and charges which are, or may be, imposed under your Variable Contract or Qualified Plan. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. The Example also assumes that your investment had a 5% return each year and that the Portfolio's operating expenses remain the same. The Example reflects applicable expense limitation agreements and/or waivers in effect, if any, for the one-year period and the first year of the time periods indicated. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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Class		1 Yr	3 Yrs	5 Yrs	10 Yrs
ADV	$	132	454	800	1,773
I	$	82	298	533	1,206
R6	$	80	249	433	966
S	$	107	377	667	1,494
S2	$	122	423	747	1,662

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in Annual Portfolio Operating Expenses or in the Expense Example, affect the Portfolio's performance.

During the most recent fiscal year, the Portfolio's portfolio turnover rate was 56% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in a broadly diversified portfolio of common stocks of mid-cap growth companies. For purposes of the Portfolio’s 80% investment policy, the Portfolio considers a company to be a growth company if the company’s securities are represented in an appropriate third-party growth-oriented index.

The Portfolio defines a mid-cap company as a company whose market capitalization falls within the market capitalization range of companies in the Russell Midcap Index, MSCI USA Mid Cap Index or MSCI World Mid Cap Index (after the sub-adviser (the “Sub-Adviser”) removes any companies from the high and low ends of the range of each index based on the Sub-Adviser’s assessment that those companies, due to their sizes, should not be considered mid-cap companies). The market capitalizations of the companies in the indexes change over time and the indexes are periodically reconstituted to ensure that they continue to accurately reflect the midcap equity market. As of December 31, 2025, the market capitalization range represented across these indexes (after removing any outlier companies) was $1.6 billion to $101.0 billion.

The Portfolio is broadly diversified, and the top 25 holdings are not expected to constitute a large portion of the Portfolio’s assets. This broad diversification should help reduce the effects of individual security price volatility on overall fund performance.

Stock selection is based on a combination of fundamental, bottom-up analysis and top-down quantitative strategies in an effort to identify companies with superior long-term appreciation prospects. The Sub-Adviser generally uses a growth approach, looking for companies with one or more of the following characteristics: a demonstrated ability to consistently increase revenues, earnings, and cash flow; capable management; attractive business niches; and a sustainable competitive advantage. Valuation measures, such as a company's price/earnings ratio relative to the market and its own growth rate, are also considered. In selecting these companies, the Sub-Adviser seeks to identify companies that it believes will have earnings that grow at a faster rate than the average company. The Portfolio has the flexibility to purchase some large-cap and small-cap companies that have qualities consistent with the Portfolio’s core characteristics.

The Portfolio typically limits holdings of high-yielding stocks, but the payment of dividends – even above-average dividends – does not disqualify a stock from consideration. Most holdings are expected to have relatively low dividend yields.

In pursuing its investment objective, the Sub-Adviser has the discretion to deviate from the Portfolio’s normal investment criteria, as described above, and purchase securities that it believes will provide an opportunity for gain. These special situations might arise when the Sub-Adviser believes a security could increase in value for a variety of reasons, including an extraordinary corporate event, a new product introduction or innovation, a favorable competitive development, or a change in management.

While most assets will be invested in U.S. common stocks, to a limited extent, other securities may also be purchased, including foreign (non-U.S.) stocks, futures, and forward foreign currency exchange contracts, in keeping with the Portfolio's investment objective. Any investments in futures would typically serve as an efficient means of gaining exposure to certain markets or as a cash management tool to maintain liquidity while being invested in the market. Forward foreign currency exchange contracts would primarily be used to help protect the Portfolio's foreign (non-U.S.) holdings from unfavorable changes in foreign currency exchange rates. The Portfolio may from time to time emphasize one or more sectors in selecting its investments.

The Portfolio may invest in real estate-related securities, including real estate investment trusts (“REITs”).

Summary Prospectus

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VY® T. Rowe Price Diversified Mid Cap Growth Portfolio

The Portfolio may also invest, to the extent permitted under the Investment Company Act of 1940, as amended, and the rules and regulations thereunder, and under the terms of applicable no-action relief or exemptive orders granted thereunder, in affiliated and internally managed money market funds of the Sub-Adviser. In addition, the Portfolio may invest in U.S. and foreign dollar denominated money market securities and U.S. and foreign (non-U.S.) dollar currencies.

The Sub-Adviser integrates environmental, social, and governance (“ESG”) factors into its investment research process for certain investments. While ESG factors vary widely, the Sub-Adviser generally considers ESG factors such as climate change, resource depletion, labor standards, diversity, human rights issues, and governance structure and practices. For certain types of investments, including, but not limited to, cash, currency positions, and particular types of derivatives, an ESG analysis may not be relevant or possible due to a lack of data. Where ESG considerations are integrated into the investment research process, the Sub-Adviser focuses on the ESG factors it considers most likely to have a material impact on the performance of the holdings in the Portfolio’s portfolio. The Sub-Adviser may conclude that other attributes of an investment outweigh ESG considerations when making investment decisions for the Portfolio.

The Sub-Adviser may sell assets for a variety of reasons, including in response to a change in the Sub-Adviser’s original investment considerations, to limit losses, to adjust the characteristics of the overall portfolio, or redeploy assets into different opportunities.

The Portfolio may lend portfolio securities on a short-term or long-term basis, up to 33 1∕3% of its total assets.

Principal Risks

You could lose money on an investment in the Portfolio. Any of the following risks, among others, could affect Portfolio performance or cause the Portfolio to lose money or to underperform market averages of other funds. The principal risks are presented in alphabetical order to facilitate readability, and their order does not imply that the realization of one risk is more likely to occur or have a greater adverse impact than another risk.

Bank Instruments: Bank instruments include certificates of deposit, fixed time deposits, bankers’ acceptances, and other debt and deposit-type obligations issued by banks. Changes in economic, regulatory, or political conditions, or other events that affect the banking industry may have an adverse effect on bank instruments or banking institutions that serve as counterparties in transactions with the Portfolio. In the event of a bank insolvency or failure, the Portfolio may be considered a general creditor of the bank, and it might lose some or all of the funds deposited with the bank. Even where it is recognized that a bank might be in danger of insolvency or failure, the Portfolio might not be able to withdraw or transfer its money from the bank in time to avoid any adverse effects of the insolvency or failure. Volatility in the banking system may impact the viability of banking and financial services institutions. In the event of failure of any of the financial institutions where the Portfolio maintains its cash and cash equivalents, there can be no assurance that the Portfolio would be able to access uninsured funds in a timely manner or at all and the Portfolio may incur losses. Any such event could adversely affect the business, liquidity, financial position and performance of the Portfolio.

Company: The price of a company’s stock could decline or underperform for many reasons, including, among others, poor management, financial problems, reduced demand for the company’s goods or services, regulatory fines and judgments, or business challenges. If a company is unable to meet its financial obligations, declares bankruptcy, or becomes insolvent, its stock could become worthless.

Currency: To the extent that the Portfolio invests directly or indirectly in foreign (non-U.S.) currencies or in securities denominated in, or that trade in, foreign (non-U.S.) currencies, it is subject to the risk that those foreign (non-U.S.) currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency being hedged by the Portfolio through foreign currency exchange transactions.

Derivative Instruments: Derivative instruments are subject to a number of risks, including the risk of changes in the market price of the underlying asset, reference rate, or index, credit risk with respect to the counterparty, risk of loss due to changes in market interest rates, liquidity risk, valuation risk, and volatility risk. The amounts required to purchase certain derivatives may be small relative to the magnitude of exposure assumed by the Portfolio. Therefore, the purchase of certain derivatives may have an economic leveraging effect on the Portfolio and exaggerate any increase or decrease in the net asset value. Derivatives may not perform as expected, so the Portfolio may not realize the intended benefits. When used for hedging purposes, the change in value of a derivative may not correlate as expected with the asset, reference rate, or index being hedged. When used as an alternative or substitute for direct cash investment, the return provided by the derivative may not provide the same return as direct cash investment.

Dividend: Companies that issue dividend yielding equity securities are not required to continue to pay dividends on such securities. Therefore, there is a possibility that such companies could reduce or eliminate the payment of dividends in the future. As a result, the Portfolio’s ability to execute its investment strategy may be limited.

Summary Prospectus

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Environmental, Social, and Governance (Equity): The Sub-Adviser’s consideration of ESG factors in selecting investments for the Portfolio is based on information that is not standardized, some of which can be qualitative and subjective by nature. The Sub-Adviser’s assessment of ESG factors in respect of a company may rely on third-party data that might be incorrect or based on incomplete or inaccurate information. There is no minimum percentage of the Portfolio’s assets that will be invested in companies that the Sub-Adviser views favorably in light of ESG factors, and the Sub-Adviser may choose not to invest in companies that compare favorably to other companies on the basis of ESG factors. It is possible that the Portfolio will have less exposure to certain companies due to the Sub-Adviser’s assessment of ESG factors than other comparable mutual funds. There can be no assurance that an investment selected by the Sub-Adviser, which includes its consideration of ESG factors, when available, will provide more favorable investment performance than another potential investment, and such an investment may, in fact, underperform other potential investments.

Focused Investing: To the extent that the Portfolio invests a substantial portion of its assets in issuers that share similar economic characteristics or in securities of a particular industry, sector or related group of industries or sectors, market segment, or geographic area, the Portfolio may be more sensitive to financial, economic, business, political, regulatory, and other developments and conditions, including natural or other disasters, affecting issuers in a particular industry, sector or related group of industries or sectors, market segment, or geographic area in which the Portfolio focuses its investments, and if securities of such industry, sector or related group of industries or sectors, market segment, or geographic area fall out of favor, the Portfolio could underperform, or be more volatile than, a fund that has greater diversification.

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Information Technology Sector: Investments in companies involved in the information technology sector are subject to significant competitive pressures, such as aggressive pricing of products or services, new market entrants, competition for market share, short product cycles due to an accelerated rate of technological developments, evolving industry standards, changing customer demands, and the potential for limited earnings and/or falling profit margins. The sector includes companies that offer software and information technology services, manufacturers and distributors of technology hardware and equipment such as communications equipment, cellular phones, computers and peripherals, electronic equipment and related instruments, and semiconductors and related equipment and materials. Certain information technology companies, including semiconductor-related companies, may be particularly sensitive to supply and demand cycles, reduced demand for end-user products, underutilization of manufacturing capacity, inventory adjustments, high capital costs, reliance on a limited number of customers, suppliers, or specialized manufacturing facilities, shortages or price fluctuations in key components or raw materials, supply chain disruptions, research and development costs, trade restrictions, export controls, tariffs, intellectual property disputes, government regulation, and geopolitical developments. The failure of a company to adapt to such changes could have a material adverse effect on the company’s business, results of operations, and financial condition. These companies also face the risks that new services, equipment, or technologies will not be accepted by consumers and businesses or will become rapidly obsolete. These factors can affect the profitability of these companies and, as a result, the values of their securities. The rapid growth of artificial intelligence (“AI”) applications has significantly increased demand for products sold by semiconductor-related companies. If AI-related demand fails to meet market expectations, the value of these companies may substantially decline, resulting in a decline in the Portfolio’s value. Many companies involved in the information technology sector have limited operating histories, and prices of these companies’ securities historically have been more volatile than the overall market, especially over the short term.

Foreign (Non-U.S.) Investments: Investing in foreign (non-U.S.) securities may result in the Portfolio experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due, in part, to: smaller markets; differing reporting, accounting, auditing and financial reporting standards and practices; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; and political changes or diplomatic developments, which may include the imposition of economic sanctions (or the threat of new or modified sanctions) or other measures by the U.S. or other governments and supranational organizations. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region.

Growth Investing: Prices of growth-oriented stocks are more sensitive to investor perceptions of the issuer’s growth potential and may fall quickly and significantly if investors suspect that actual growth may be less than expected. There is a risk that funds that invest in growth-oriented stocks may underperform other funds that invest more broadly. Growth-oriented stocks tend to be more volatile than value-oriented stocks, and may underperform the market as a whole over any given time period.

Investment Model: The Sub-Adviser’s proprietary investment model may not adequately take into account existing or unforeseen market factors or the interaction among such factors, including changes in how such factors interact, and there is no guarantee that the use of a proprietary investment model will result in effective investment decisions for the Portfolio. Portfolios that are actively managed, in whole or in part, according to a quantitative investment model (including models that utilize forms of artificial intelligence, such as machine learning) can perform differently from the market, based on the investment model and the factors used in the analysis, the weight placed on each factor, and changes from the factors’ historical trends. Technical

Summary Prospectus

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issues in the design, development, implementation, application, and maintenance of the models (e.g., stale or inaccurate data, human error, programming or other software issues, coding errors, and technology failures) may create errors or limitations that might go undetected or are discovered only after the errors or limitations have negatively impacted performance.

Liquidity: If a security is illiquid, the Portfolio might be unable to sell the security at a time when the Portfolio’s manager might wish to sell, or at all. Further, the lack of an established secondary market may make it more difficult to value illiquid securities, exposing the Portfolio to the risk that the prices at which it sells illiquid securities will be less than the prices at which they were valued when held by the Portfolio, which could cause the Portfolio to lose money. The prices of illiquid securities may be more volatile than more liquid securities, and the risks associated with illiquid securities may be greater in times of financial stress. Certain securities that are liquid when purchased may later become illiquid, particularly in times of overall economic distress or due to geopolitical events such as sanctions, trading halts, or wars. In addition, markets or securities may become illiquid quickly.

Market: The market values of securities will fluctuate, sometimes sharply and unpredictably, based on overall economic conditions, governmental actions or intervention, market disruptions caused by trade disputes or other factors, political developments, and other factors. Prices of equity securities tend to rise and fall more dramatically than those of debt instruments. Additionally, legislative, regulatory or tax policies or developments may adversely impact the investment techniques available to a manager, add to costs, and impair the ability of the Portfolio to achieve its investment objectives.

Market Disruption and Geopolitical: The Portfolio is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. Due to the increasing interdependence among global economies and markets, conditions in one country, market, or region might adversely impact markets, issuers and/or foreign exchange rates in other countries, including the United States. Wars, terrorism, global health crises and pandemics, trade disputes, tariffs and other restrictions on trade or economic sanctions, rapid technological developments (such as artificial intelligence technologies), and other geopolitical events that have led, and may continue to lead, to increased market volatility and may have adverse short- or long-term effects on U.S. and global economies and markets, generally. For example, the COVID-19 pandemic resulted in significant market volatility, exchange suspensions and closures, declines in global financial markets, higher default rates, supply chain disruptions, and a substantial economic downturn in economies throughout the world. The economic impacts of COVID-19 have created a unique challenge for real estate markets. Many businesses have either partially or fully transitioned to a remote-working environment and this transition may negatively impact the occupancy rates of commercial real estate over time. Natural and environmental disasters and systemic market dislocations are also highly disruptive to economies and markets. Military action by Russia in Ukraine, the prolonged conflict between Hamas and Israel, the Iranian conflict that commenced in February 2026, and political upheaval in Venezuela have resulted, and may continue to result, in sanctions, market disruptions, declines in regional and global stock markets, unusual volatility in global commodity markets, and disruptions to energy production or transportation, including through key shipping routes, any of which could adversely affect the value of the Portfolio's investments, including beyond the Portfolio's direct exposure to issuers in the affected regions. The escalation or expansion of hostilities including the involvement of additional nations, could introduce further uncertainty and volatility in global energy, commodity, and financial markets. The extent and duration of these conflicts, related sanctions, and resulting market disruptions are impossible to predict but could be substantial. A number of U.S. domestic banks and foreign (non-U.S.) banks have experienced financial difficulties and, in some cases, failures. There can be no certainty that the actions taken by regulators to limit the effect of those financial difficulties and failures on other banks or other financial institutions or on the U.S. or foreign (non-U.S.) economies generally will be successful. It is possible that more banks or other financial institutions will experience financial difficulties or fail, which may affect adversely other U.S. or foreign (non-U.S.) financial institutions and economies. These events as well as other changes in foreign (non-U.S.) and domestic economic, social, and political conditions also could adversely affect individual issuers or related groups of issuers, securities markets, interest rates, credit ratings, inflation, investor sentiment, and other factors affecting the value of the Portfolio’s investments. Any of these occurrences could disrupt the operations of the Portfolio and of the Portfolio’s service providers. Recent technological developments in, and the increasingly widespread use of, artificial intelligence, including machine learning technology and generative artificial intelligence (“AI”), may pose risks to the Portfolio. For instance, the economy may be significantly impacted by the advanced development and increased regulation of AI. As AI is used more widely, the profitability and growth of Portfolio holdings may be impacted, which could significantly impact the overall performance of the Portfolio. The legal and regulatory frameworks within which AI operates continue to rapidly evolve, and it is not possible to predict the full extent of current or future risks related thereto.

Mid-Capitalization Company: Investments in mid-capitalization companies may involve greater risk than is customarily associated with larger, more established companies due to the greater business risks of a limited operating history, smaller size, limited markets, and financial resources, narrow product lines, less management depth, and more reliance on key personnel. Consequently, the securities of mid-capitalization companies may have limited market stability and may be subject to more abrupt or erratic market movements than securities of larger, more established growth companies or the market averages in general.

Summary Prospectus

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Other Investment Companies: The main risk of investing in other investment companies, including ETFs, is the risk that the value of an investment company’s underlying investments might decrease. Shares of investment companies that are listed on an exchange may trade at a discount or premium from their net asset value. You will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the Portfolio’s expenses. The investment policies of the other investment companies may not be the same as those of the Portfolio; as a result, an investment in the other investment companies may be subject to additional or different risks than those to which the Portfolio is typically subject. In addition, shares of ETFs may trade at a premium or discount to net asset value and are subject to secondary market trading risks. Secondary markets may be subject to irregular trading activity, wide bid/ask spreads, and extended trade settlement periods in times of market stress because market makers and authorized participants may step away from making a market in an ETF’s shares, which could cause a material decline in the ETF’s net asset value.

Real Estate Companies and Real Estate Investment Trusts: Investing in real estate companies and REITs may subject the Portfolio to risks similar to those associated with the direct ownership of real estate, including losses from casualty or condemnation, changes in local and general economic conditions, supply and demand, market interest rates, zoning laws, regulatory limitations on rents, property taxes, overbuilding, high foreclosure rates, and operating expenses in addition to terrorist attacks, wars, or other acts that destroy real property. In addition, REITs may also be affected by tax and regulatory requirements in that a REIT may not qualify for favorable tax treatment or regulatory exemptions. Investments in REITs are affected by the management skill of the REIT’s sponsor. The Portfolio will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests.

Securities Lending: Securities lending involves two primary risks: “investment risk” and “borrower default risk.” When lending securities, the Portfolio will receive cash or U.S. government securities as collateral. Investment risk is the risk that the Portfolio will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Portfolio will lose money due to the failure of a borrower to return a borrowed security. Securities lending may result in leverage. The use of leverage may exaggerate any increase or decrease in the net asset value, causing the Portfolio to be more volatile. The use of leverage may increase expenses and increase the impact of the Portfolio’s other risks.

Special Situations: A “special situation” arises when, in a manager’s opinion, securities of a particular company will appreciate in value within a reasonable period because of unique circumstances applicable to the company. Special situations investments often involve much greater risk than is inherent in ordinary investments. Investments in special situation companies may not appreciate and the Portfolio’s performance could suffer if an anticipated development does not occur or does not produce the anticipated result.

An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.

Performance Information

The following information is intended to help you understand the risks of investing in the Portfolio. The following bar chart shows the changes in the Portfolio's performance from year to year, and the table compares the Portfolio's performance to the performance of a broad-based securities market index and additional indices with investment characteristics similar to those of the Portfolio for the same period. In 2024, the Investment Adviser changed the Portfolio’s primary benchmark from the S&P MidCap 400® Index to the Russell 3000® Index in accordance with changes to regulatory disclosure requirements. The Portfolio continues to use the S&P MidCap 400® Index as an additional benchmark that the Investment Adviser believes more closely reflects the Portfolio’s principal investment strategies. The Portfolio's performance information reflects applicable fee waivers and/or expense limitations in effect during the period presented. Absent such fee waivers/expense limitations, if any, performance would have been lower. The bar chart shows the performance of the Portfolio's Class ADV shares. Performance for other share classes would differ to the extent they have differences in their fees and expenses. The Class R6 shares performance shown for the period prior to their inception date is the performance of Class I shares without adjustment for any differences in expenses between the two classes. If adjusted for such differences, returns would be different.

Performance shown in the bar chart and in the Average Annual Total Returns table does not include insurance-related charges imposed under a Variable Contract or expenses related to a Qualified Plan. If these charges or expenses were included, performance would be lower. Thus, you should not compare the Portfolio's performance directly with the performance information of other investment products without taking into account all insurance-related charges and expenses payable under your Variable Contract or Qualified Plan. The Portfolio's past performance is no guarantee of future results.

Summary Prospectus

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Average Annual Total Returns %
(for the periods ended December 31, 2025)

		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class ADV	%	9.49	6.72	12.23	N/A	12/10/2001
Russell 3000® Index1	%	17.15	13.15	14.29	N/A
S&P MidCap 400® Index1	%	7.50	9.12	10.72	N/A
Russell Midcap® Growth Index1	%	8.66	6.65	12.49	N/A
Class I	%	9.92	7.24	12.78	N/A	12/10/2001
Russell 3000® Index1	%	17.15	13.15	14.29	N/A
S&P MidCap 400® Index1	%	7.50	9.12	10.72	N/A
Russell Midcap® Growth Index1	%	8.66	6.65	12.49	N/A
Class R6	%	9.99	7.27	12.81	N/A	5/3/2016
Russell 3000® Index1	%	17.15	13.15	14.29	N/A
S&P MidCap 400® Index1	%	7.50	9.12	10.72	N/A
Russell Midcap® Growth Index1	%	8.66	6.65	12.49	N/A
Class S	%	9.67	6.97	12.49	N/A	12/10/2001
Russell 3000® Index1	%	17.15	13.15	14.29	N/A
S&P MidCap 400® Index1	%	7.50	9.12	10.72	N/A
Russell Midcap® Growth Index1	%	8.66	6.65	12.49	N/A
Class S2	%	9.51	6.80	12.33	N/A	2/27/2009
Russell 3000® Index1	%	17.15	13.15	14.29	N/A
S&P MidCap 400® Index1	%	7.50	9.12	10.72	N/A
Russell Midcap® Growth Index1	%	8.66	6.65	12.49	N/A

The index returns do not reflect deductions for fees, expenses, or taxes.

Portfolio Management

Investment Adviser

Voya Investments, LLC

Sub-Adviser

T. Rowe Price Associates, Inc.

Portfolio Managers
Dante Pearson Portfolio Manager (since 3/2026)	Donald J. Peters Portfolio Manager (since 11/2004)
Effective December 31, 2026
Portfolio Manager
Dante Pearson Portfolio Manager (since 3/2026)

Purchase and Sale of Portfolio Shares

Shares of the Portfolio are not offered directly to the public. Purchase and sale of shares may be made only by separate accounts of insurance companies serving as investment options under Variable Contracts or by Qualified Plans, custodian accounts, and certain investment advisers and their affiliates, other investment companies, or permitted investors. Please refer to the prospectus for the appropriate insurance company separate account, investment company, or your plan documents for information on how to direct investments in, or sale from, an investment option corresponding to the Portfolio and any fees that may apply. Participating insurance companies and certain other designated organizations are authorized to receive purchase orders on the Portfolio's behalf.

Tax Information

Distributions made by the Portfolio to a Variable Contract or Qualified Plan, and exchanges and redemptions of Portfolio shares made by a Variable Contract or Qualified Plan, ordinarily do not cause the corresponding contract holder or plan participant to recognize income or gain for U.S. federal income tax purposes. See the Variable Contract prospectus or the governing documents of your Qualified Plan for information regarding the U.S. federal income tax treatment of the distributions to your Variable Contract or Qualified Plan and the holders of the contracts or plan participants.

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VY® T. Rowe Price Diversified Mid Cap Growth Portfolio

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Summary Prospectus

SPRO-807 (0926-092226)

Best quarter:	2nd Quarter 2020	30.28%
Worst quarter:	1st Quarter 2020	-21.64%