Summary Prospectus    May 1, 2019

Voya Intermediate Bond Portfolio  

Class/Ticker: ADV/IIBPX; I/IPIIX; S/IPISX; S2/IIBTX

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 www.voyainvestments.com/literature; email a request to Voyaim_literature@voya.com; call 1-800-992-0180; or ask your salesperson, financial intermediary, or retirement plan administrator. The Portfolio's Prospectus and Statement of Additional Information, each dated May 1, 2019, and the audited financial statements on pages 19-51 of the Portfolio’s shareholder report dated December 31, 2018 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.

Beginning on January 1, 2021, as permitted by regulations adopted by the U.S. Securities and Exchange Commission, paper copies of a Portfolio’s annual and semi-annual shareholder reports will no longer be sent by mail unless you specifically request paper copies of the reports. Instead, the reports will be made available on a website and you will be notified by mail each time a report is posted and you will be provided with a website link to access the report.

If you already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from your insurance carrier electronically by contacting them directly.

You may elect to receive all future reports in paper free of charge. If you received this document in the mail, please follow the instructions provided to elect to continue receiving paper copies of your shareholder reports. You can inform us that you wish to continue receiving paper copies by calling 1-800-283-3427. Your election to receive reports in paper will apply to all funds held in which you invest.

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Class			1 Yr	3 Yrs	5 Yrs	10 Yrs
ADV		$	107	334	579	1,283
I		$	56	176	307	689
S		$	82	255	444	990
S2		$	97	303	525	1,166

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 193% of the average value of its portfolio.

Principal Investment Strategies

Under normal market conditions, the Portfolio invests at least 80% of its net assets (plus borrowings for investment purposes) in a portfolio of bonds, including but not limited to corporate, government and mortgage bonds, which, at the time of purchase, are rated investment-grade (e.g., rated at least BBB- by S&P Global Ratings or Baa3 by Moody's Investors Service, Inc.) or have an equivalent rating by a nationally recognized statistical rating organization (“NRSRO”), or are of comparable quality if unrated. The Portfolio will provide shareholders with at least 60 days' prior notice of any change in this investment policy.

Although the Portfolio may invest a portion of its assets in high-yield (high risk) debt instruments rated below investment grade (commonly referred to as “junk bonds”), the Portfolio will seek to maintain a minimum weighted average portfolio quality rating of at least investment-grade. Generally, the sub-adviser (“Sub-Adviser”) maintains a dollar-weighted average duration between three and ten years. Duration is the most commonly used measure of risk in debt instruments as it incorporates multiple features of the debt instruments (e.g., yield, coupon, maturity, etc.) into one number. Duration is a measure of sensitivity of the price of a debt instrument to a change in interest rates. Duration is a weighted average of the times that interest payments and the final return of principal are received. The weights are the amounts of the payments discounted by the yield-to-maturity of the debt instrument. Duration is expressed as a number of years. The bigger the duration number, the greater the interest-rate risk or reward for the debt instrument prices. For example, the price of a bond with an average duration of five years would be expected to fall approximately 5% if interest rates rose by 1%. Conversely, the price of a bond with an average duration of five years would be expected to rise approximately 5% if interest rates drop by 1%.

The Portfolio may also invest in: preferred stocks; high quality money market instruments; municipal bonds; debt instruments of foreign issuers (including those located in emerging market countries); securities denominated in foreign currencies; foreign

currencies; mortgage-backed and asset-backed securities; bank loans and floating rate secured loans (“Senior Loans”); and derivatives including futures, options, and swaps (including credit default swaps, interest rate swaps and total return swaps) involving securities, securities indices and interest rates, which may be denominated in the U.S. dollar or foreign currencies. The Portfolio typically uses derivatives to reduce exposure to other risks, such as interest rate or currency risk, to substitute for taking a position in the underlying asset, and/or to enhance returns in the Portfolio.

The Portfolio may seek to obtain exposure to the securities in which it invests by entering into a series of purchase and sale contracts or through other investment techniques such as buy backs and dollar rolls.

The Portfolio may invest in other investment companies, including exchange-traded funds, to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and exemptive orders thereunder (“1940 Act”).

The Sub-Adviser believes that relationships between the drivers of debt instrument returns change over time and that recognizing this is key to managing debt instrument assets. Therefore, the Sub-Adviser employs a dynamic investment process that seeks to balance top-down macro economic considerations and fundamental bottom-up analysis during the steps of its investment process - sector allocation, security selection, duration and yield curve management. This includes leveraging proprietary qualitative analysis along with quantitative tools throughout the portfolio construction process.

The Sub-Adviser may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into opportunities believed to be more promising, among others.

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.

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.

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 company goods or services, regulatory fines and judgments, or business challenges. If a company declares bankruptcy or becomes insolvent, its stock could become worthless.

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Credit: The price of a bond or other debt instrument is likely to fall if the issuer’s actual or perceived financial health deteriorates, whether because of broad economic or issuer-specific reasons. In certain cases, the issuer could be late in paying interest or principal, or could fail to pay its financial obligations altogether.

Credit Default Swaps: The Portfolio may enter into credit default swaps, either as a buyer or a seller of the swap. A buyer of a swap pays a fee to buy protection against the risk that a security will default. If no default occurs, the Portfolio will have paid the fee, but typically will recover nothing under the swap. A seller of a swap receives payment(s) in return for an obligation to pay the counterparty the full notional value of a security in the event of a default of the security issuer. As a seller of a swap, the Portfolio would effectively add leverage to its portfolio because, in addition to its total net assets, the Portfolio would be subject to investment exposure on the full notional value of the swap. Credit default swaps are particularly subject to counterparty, credit, valuation, liquidity and leveraging risks and the risk that the swap may not correlate with its underlying asset as expected. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity; however, there is no assurance that central clearing will achieve that result, and in the meantime, central clearing and related requirements expose the Portfolio to new kinds of costs and risks. In addition, credit default swaps expose the Portfolio to the risk of improper valuation.

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 securities, credit risk with respect to the counterparty, risk of loss due to changes in market interest rates and liquidity 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 currency, security or other risk being hedged. When used as an alternative or substitute for direct cash investments, the return provided by the derivative may not provide the same return as direct cash investment. In addition, given their complexity, derivatives expose the Portfolio to the risk of improper valuation.

Floating Rate Loans: In the event a borrower fails to pay scheduled interest or principal payments on a floating rate loan, the Portfolio will experience a reduction in its income and a decline in the market value of such investment. This will likely reduce the amount of dividends paid and may lead to a decline in the net asset value. If a floating rate loan is held by the Portfolio through another financial institution, or the Portfolio relies upon another financial institution to administer the loan, the receipt of scheduled interest or principal payments may be subject to the credit risk of such financial institution. Investors in floating rate loans may not be afforded the protections of the anti-fraud provisions of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, because loans may not be considered “securities” under such laws. Additionally, the value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer’s obligations under the loan. Furthermore, such collateral may be difficult to liquidate. No active trading market may exist for many floating rate loans and many floating rate loans are subject to restrictions on resale. Transactions in loans typically settle on a delayed basis and may take longer than 7 days to settle. As a result, the Portfolio may not receive the proceeds from a sale of a floating rate loan for a significant period of time. Delay in the receipts of settlement proceeds may impair the ability of the Portfolio to meet its redemption obligations. It may also limit the ability of the Portfolio to repay debt, pay dividends, or to take advantage of new investment opportunities.

Foreign Investments/Developing and Emerging Markets: 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 to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments, which may include the imposition of economic sanctions or other measures by the United States 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. Foreign investment risks may be greater in developing and emerging markets than in developed markets.

High-Yield Securities: Lower quality securities (including securities that have fallen below investment-grade and are classified as “junk bonds” or “high yield securities”) have greater credit risk and liquidity risk than higher quality (investment-grade) securities, and their issuers' long-term ability to make payments is considered speculative. Prices of lower quality bonds or other debt instruments are also more volatile, are more sensitive to negative news about the economy or the issuer, and have greater liquidity and price volatility risk.

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Interest in Loans: The value and the income streams of interests in loans (including participation interests in lease financings and assignments in secured variable or floating rate loans) will decline if borrowers delay payments or fail to pay altogether. A significant rise in market interest rates could increase this risk. Although loans may be fully collateralized when purchased, such collateral may become illiquid or decline in value.

Interest Rate: With bonds and other fixed rate debt instruments, a rise in market interest rates generally causes values to fall; conversely, values generally rise as market interest rates fall. The higher the credit quality of the instrument, and the longer its maturity or duration, the more sensitive it is likely to be to interest rate risk. In the case of inverse securities, the interest rate paid by the securities is a floating rate, which generally will decrease when the market rate of interest to which the inverse security is indexed increases and will increase when the market rate of interest to which the inverse security is indexed decreases. As of the date of this Prospectus, the United States experiences a low interest rate environment, which may increase the Portfolio’s exposure to risks associated with rising market interest rates. Rising market interest rates could have unpredictable effects on the markets and may expose fixed-income and related markets to heightened volatility. To the extent that the Portfolio invests in fixed-income securities, an increase in market interest rates may lead to increased redemptions and increased portfolio turnover, which could reduce liquidity for certain investments, adversely affect values, and increase costs. Increased redemptions may cause the Portfolio to liquidate portfolio positions when it may not be advantageous to do so and may lower returns. If dealer capacity in fixed-income markets is insufficient for market conditions, it may further inhibit liquidity and increase volatility in the fixed-income markets. Further, recent and potential future changes in government policy may affect interest rates.

Investment Model: A manager’s proprietary model may not adequately allow for existing or unforeseen market factors or the interplay between such factors. Portfolios that are actively managed, in whole or in part, according to a quantitative investment model can perform differently from the market as a whole 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. Mistakes in the construction and implementation of the investment models (including, for example, data problems and/or software issues) may create errors or limitations that might go undetected or are discovered only after the errors or limitations have negatively impacted performance. There is no guarantee that the use of these investment models will result in effective investment decisions for the Portfolio.

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 price at which it sells illiquid securities will be less than the price at

which they were valued when held by the Portfolio. The prices of illiquid securities may be more volatile than more liquid investments. The risks associated with illiquid securities may be greater in times of financial stress. The Portfolio could lose money if it cannot sell a security at the time and price that would be most beneficial to the Portfolio.

Market: Stock prices may be volatile or have reduced liquidity in response to real or perceived impacts of factors including, but not limited to, economic conditions, changes in market interest rates, and political events. Stock markets tend to be cyclical, with periods when stock prices generally rise and periods when stock prices generally decline. Any given stock market segment may remain out of favor with investors for a short or long period of time, and stocks as an asset class may underperform bonds or other asset classes during some periods. Additionally, legislative, regulatory or tax policies or developments in these areas 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 Capitalization: Stocks fall into three broad market capitalization categories - large, mid, and small. Investing primarily in one category carries the risk that, due to current market conditions, that category may be out of favor with investors. If valuations of large-capitalization companies appear to be greatly out of proportion to the valuations of mid- or small-capitalization companies, investors may migrate to the stocks of mid- and small-sized companies causing a fund that invests in these companies to increase in value more rapidly than a fund that invests in larger companies. Investing in mid- and small-capitalization companies may be subject to special risks associated with narrower product lines, more limited financial resources, smaller management groups, more limited publicly available information, and a more limited trading market for their stocks as compared with larger companies. As a result, stocks of mid- and small-capitalization companies may be more volatile and may decline significantly in market downturns.

Mortgage- and/or Asset-Backed Securities: Defaults on, or low credit quality or liquidity of the underlying assets of the asset-backed (including mortgage-backed) securities may impair the value of these securities and result in losses. There may be limitations on the enforceability of any security interest or collateral granted with respect to those underlying assets and the value of collateral may not satisfy the obligation upon default. These securities also present a higher degree of prepayment and extension risk and interest rate risk than do other types of debt instruments.

Municipal Obligations: The municipal securities market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities. Among other risks, investments in municipal securities are subject to the risk that the issuer may delay payment, restructure its debt, or refuse to pay interest or repay principal on its debt.

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Other Investment Companies: The main risk of investing in other investment companies, including exchange-traded funds (“ETFs”), is the risk that the value of the securities underlying an investment company 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 expenses of the Portfolio. 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.

Prepayment and Extension: Many types of debt instruments are subject to prepayment and extension risk. Prepayment risk is the risk that the issuer of a debt instrument will pay back the principal earlier than expected. This may occur when interest rates decline. Prepayment may expose the Portfolio to a lower rate of return upon reinvestment of principal. Also, if a debt instrument subject to prepayment has been purchased at a premium, the value of the premium would be lost in the event of prepayment. Extension risk is the risk that the issuer of a debt instrument will pay back the principal later than expected. This may occur when interest rates rise. This may negatively affect performance, as the value of the debt instrument decreases when principal payments are made later than expected. Additionally, the Portfolio may be prevented from investing proceeds it would have received at a given time at the higher prevailing interest rates.

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.

U.S. Government Securities and Obligations: U.S. government securities are obligations of, or guaranteed by, the U.S. government, its agencies or government-sponsored enterprises. U.S. government securities are subject to market and interest rate risk, and may be subject to varying degrees of credit risk.

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/indices for the same period. 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.

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.

Calendar Year Total Returns Class ADV
(as of December 31 of each year)

Best quarter: 3^rd 2009, 7.05% and Worst quarter: 4^th 2016, -2.64%

Average Annual Total Returns %
(for the periods ended December 31, 2018)

		1 Yr	5 Yrs	10 Yrs	Since Inception	Inception Date
Class ADV	%	-1.08	2.67	4.81	N/A	12/20/06
Bloomberg Barclays U.S. Aggregate Bond Index1	%	0.01	2.52	3.48	N/A
Class I	%	-0.54	3.18	5.35	N/A	05/23/73
Bloomberg Barclays U.S. Aggregate Bond Index1	%	0.01	2.52	3.48	N/A
Class S	%	-0.82	2.94	5.10	N/A	05/03/02
Bloomberg Barclays U.S. Aggregate Bond Index1	%	0.01	2.52	3.48	N/A
Class S2	%	-0.98	2.76	N/A	5.34	02/27/09
Bloomberg Barclays U.S. Aggregate Bond Index1	%	0.01	2.52	N/A	3.67

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

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Portfolio Management

Investment Adviser	Sub-Adviser
Voya Investments, LLC	Voya Investment Management Co. LLC

    

Portfolio Managers
David Goodson Portfolio Manager (since 04/17)	Randall Parrish, CFA Portfolio Manager (since 04/17)
Matthew Toms, CFA Portfolio Manager (since 08/10)

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 federal income tax purposes. See the contract prospectus or the governing documents of your Qualified Plan for information regarding the federal income tax treatment of the distributions to your Variable Contract or Qualified Plan and the holders of the contracts or plan participants.

Payments to Broker-Dealers and Other Financial Intermediaries

If you invest in the Portfolio through a Variable Contract issued by an insurance company or through a Qualified Plan that, in turn, was purchased or serviced through an insurance company, broker-dealer or other financial intermediary, the Portfolio and its adviser or distributor or their affiliates may: (1) make payments to the insurance company issuer of the Variable Contract or to the company servicing the Qualified Plan; and (2) make payments to the insurance company, broker-dealer or other financial intermediary. These payments may create a conflict of interest by: (1) influencing the insurance company or the company servicing the Qualified Plan to make the Portfolio available as an investment option for the Variable Contract or the Qualified Plan; or (2) by influencing the broker-dealer or other intermediary and your salesperson to recommend the Variable Contract or the pension servicing agent and/or the Portfolio over other options. Ask your salesperson or Qualified Plan administrator or visit your financial intermediary's website for more information.

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SPRO-10000601 (0519-050119)