Summary Prospectus by Investment Company - Form 497K

EQ/Equity 500 Index Portfolio- Class IA, Class IB and Class K Shares

Summary Prospectusdated May 1, 2024

Before you invest, you may want to review the Portfolio's Prospectus, which contains more information about the Portfolio and its risks. The Portfolio's Prospectus and Statement of Additional Information ("SAI"), each dated May 1, 2024, as may be amended or supplemented from time to time, are incorporated by reference into this Summary Prospectus. You can find the Portfolio's Prospectus, SAI, reports to shareholders and other information about the Portfolio online at https://equitable-funds.com/allportfolios.aspx. You can also get this information at no cost by calling 1-877-222-2144 or by sending an e-mail request to [email protected]. This Summary Prospectus is intended for use in connection with a variable contract as defined in Section 817(d) of the Internal Revenue Code and certain other eligible investors and is not intended for use by other investors.

Investment Objective:Seeks to achieve a total return before expenses that approximates the total return performance of the Standard & Poor's 500® Composite Stock Index ("S&P 500 Index"), including reinvestment of dividends, at a risk level consistent with that of the S&P 500 Index.

Fees and Expenses of the Portfolio

The following table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Portfolio. The table below does not reflect any fees and expenses associated with variable life insurance contracts and variable annuity certificates and contracts ("Contracts"), which would increase overall fees and expenses. See the Contract prospectus for a description of those fees and expenses.

Shareholder Fees
(fees paid directly from your investment)

Not applicable.

Annual Portfolio Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

EQ/Equity 500 Index Portfolio	Class IA Shares	Class IB Shares	Class K Shares
Management Fee	0.21%	0.21%	0.21%
Distribution and/or Service Fees (12b-1 fees)	0.25%	0.25%	0.00%
Other Expenses	0.11%	0.11%	0.11%
Total Annual Portfolio Operating Expenses	0.57%	0.57%	0.32%
Fee Waiver and/or Expense Reimbursement1	(0.03)%	(0.03)%	(0.03)%
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.54%	0.54%	0.29%

Example

This Example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other portfolios. The Example assumes that you invest $10,000 in the Portfolio for the periods indicated, that your investment has a 5% return each year, that the Portfolio's operating expenses remain the same, and that the Expense Limitation Arrangement is not renewed. This Example does not reflect any Contract-related fees and expenses including redemption fees (if any) at

the Contract level. If such fees and expenses were reflected, the total expenses would be higher. Although your actual costs may be higher or lower, based on these assumptions, whether you redeem or hold your shares, your costs would be:

	1 Year	3 Years	5 Years	10 Years
Class IA Shares	$55	$180	$315	$711
Class IB Shares	$55	$180	$315	$711
Class K Shares	$30	$100	$177	$403

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 fund operating expenses or in the Example, affect the Portfolio's performance. During the most recent fiscal year, the Portfolio's portfolio turnover rate was 2% of the average value of its portfolio.

Investments, Risks, and Performance

Principal Investment Strategy

Under normal circumstances, the Portfolio invests at least 80% of its net assets, plus borrowings for investment purposes, in equity securities in the S&P 500 Index. For purposes of the Portfolio, equity securities in the S&P 500 Index may include financial instruments that derive their value from such securities.

The Sub-Adviser does not utilize customary economic, financial or market analyses or other traditional investment techniques to manage the Portfolio. The Portfolio has been constructed and is maintained by utilizing a replication construction technique. That is, the Portfolio will seek to hold all 500 securities in the S&P 500 Index in the exact weight each represents in that Index. This strategy is commonly referred to as an indexing strategy. The Portfolio will remain substantially fully invested in securities comprising the index even when prices are generally falling. Similarly, adverse performance of a stock will ordinarily not result in its elimination from the Portfolio.

Principal Risks

An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.The value of your investment may fall, sometimes sharply, and you could lose money by investing in the Portfolio. There can be no assurance that the Portfolio will achieve its investment objective.

The following risks can negatively affect the Portfolio's performance. The most significant risks as of the date of this Prospectus are presented first, followed by additional principal risks in alphabetical order.

Market Risk -The Portfolio is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably, based on overall economic conditions and other factors, which may negatively affect Portfolio performance. Securities markets also may experience long periods of decline in value. The value of a security can be more volatile than the market as a whole and can perform differently from the market as a whole. Any issuer of securities may perform poorly, causing the value of its securities to decline. Poor performance may be caused by a variety of factors, such as poor management decisions; reduced demand for the issuer's goods or services; competitive pressures; negative perception in the marketplace; loss of major customers; strategic initiatives such as mergers or acquisitions and the market response to any such initiatives; and the historical and prospective earnings of the issuer. The value of a security also may decline due to general market conditions, such as real or perceived adverse economic or political conditions, inflation rates and/or investor expectations concerning such rates, changes in interest rates, recessions, or adverse investor sentiment generally. During a general downturn in the securities markets, multiple asset classes may decline in value simultaneously. Even when securities markets perform well, there can be no assurance that the investments held by the Portfolio will increase in value along with the broader market. Changes in the financial condition of (or other event affecting) a single issuer can impact an individual sector or industry, or the securities markets as a whole. The value of a security also may decline due to factors that affect a particular sector or industry.

Geopolitical events, including acts of terrorism, tensions, war or other open conflicts between nations, or political or economic dysfunction within some nations that are global economic powers or major producers of oil, may lead to overall instability in world economies and markets generally and have led, and may in the future lead, to increased market volatility and may have adverse long-term effects. World markets, or those in a particular region, may all react in similar fashion to important economic, political

or other developments. Events such as environmental and natural disasters or other catastrophes, public health crises (such as epidemics and pandemics), social unrest, and cybersecurity incidents, and governments' reactions (or failure to react) to such events, could cause uncertainty in the markets and may adversely affect the performance of the global economy. Impacts from climate change may include significant risks to global financial assets and economic growth. The extent and duration of such events and resulting market disruptions could be substantial and could magnify the impact of other risks to the Portfolio. The value and liquidity of the Portfolio's investments may be negatively affected by developments in other countries and regions, whether or not the Portfolio invests in securities of issuers located in or with significant exposure to the countries or regions directly affected.

Changes in government or central bank policies and political, diplomatic and other events within the United States and abroad could cause uncertainty in the markets, may affect investor and consumer confidence, and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree. High public debt in the United States and other countries creates ongoing systemic and market risks and policymaking uncertainty and may negatively affect economic conditions and the value of markets, sectors and companies in which the Portfolio invests.

In addition, markets and market participants are increasingly reliant on information data systems. Inaccurate data, software or other technology malfunctions, programming inaccuracies, unauthorized use or access, and similar circumstances may impair the performance of these systems and may have an adverse impact upon a single issuer, a group of issuers, or the market at large.

Equity Risk -In general, the values of stocks and other equity securities fluctuate, and sometimes widely fluctuate, in response to changes in a company's financial condition as well as general market, economic and political conditions and other factors. Stock markets tend to run in cycles, with periods when stock prices generally go up and periods when stock prices generally go down. However, stock markets also can move up and down rapidly and unpredictably. In addition, common stock prices may be particularly sensitive to rising interest rates, which increase borrowing costs and the costs of capital. The Portfolio may experience a significant or complete loss on its investment in an equity security.

Large-Cap Company Risk -Larger more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes, which may lead to a decline in their market price. Many larger companies also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion.

Index Strategy Risk -The Portfolio employs an index strategy and generally will not modify its index strategy to respond to changes in market trends or the economy, which means that the Portfolio may be particularly susceptible to a general decline in the market segment relating to the relevant index. In addition, although the index strategy attempts to closely track the relevant index, the Portfolio may not invest in all of the securities in the index. Therefore, there can be no assurance that the performance of the index strategy will match that of the relevant index.

Sector Risk -From time to time, based on market or economic conditions, the Portfolio may have significant positions in one or more sectors of the market. To the extent the Portfolio invests more heavily in particular sectors, its performance will be especially sensitive to developments that significantly affect those sectors. Individual sectors may be more volatile, and may perform differently, than the broader market. The industries that constitute a sector may all react in the same way to economic, political, regulatory or other events.

Derivatives Risk -The Portfolio's investments in derivatives may rise or fall in value more rapidly than other investments and may reduce the Portfolio's returns and increase the volatility of the Portfolio's net asset value. Investing in derivatives involves investment techniques and risk analyses different from, and risks in some respects greater than, those associated with investing in more traditional investments, such as stocks and bonds. Derivatives may be leveraged such that a small investment can have a significant impact on the Portfolio's exposure to stock market values, interest rates, or other investments. As a result, a relatively small price movement in a derivatives contract may cause an immediate and substantial loss, and the Portfolio could lose more than the amount it invested. Some derivatives can have the potential for unlimited losses. In addition, it may be difficult or impossible for the Portfolio to purchase or sell certain derivatives in sufficient amounts to achieve the desired level of exposure, or to terminate or offset existing arrangements, which may result in a loss or may be costly to the Portfolio. Some derivatives are more sensitive to market price fluctuations and to interest rate changes than other investments. Derivatives may not behave as anticipated by the Portfolio, and derivatives strategies that are successful under certain market conditions may be less successful or unsuccessful under other market conditions. The Portfolio also may be exposed to losses if the counterparty in the transaction is unable or unwilling to fulfill its contractual obligation. In certain cases, the Portfolio may be hindered or delayed in exercising remedies against or closing out derivatives with a counterparty, resulting in additional losses. Derivatives also may be subject to the risk of mispricing or improper valuation, and valuation may be more difficult in times of market turmoil. Changes to the regulation of derivatives markets and mutual funds' use of derivatives may impact the

Portfolio's ability to maintain its investments in derivatives, make derivatives more costly, limit their availability, adversely affect their value or performance, or otherwise disrupt markets.

Portfolio Management Risk -The Portfolio is subject to the risk that strategies used by an investment manager and its securities selections fail to produce the intended results. An investment manager's judgments or decisions about the quality, relative yield or value of, or market trends affecting, a particular security or issuer, industry, sector, region or market segment, or about the economy or interest rates, may be incorrect or otherwise may not produce the intended results, which may result in losses to the Portfolio. In addition, many processes used in Portfolio management, including security selection, rely, in whole or in part, on the use of various technologies. The Portfolio may suffer losses if there are imperfections, errors or limitations in the quantitative, analytic or other tools, resources, information and data used, or the analyses employed or relied on, by an investment manager, or if such tools, resources, information or data are used incorrectly, fail to produce the desired results, or otherwise do not work as intended. There can be no assurance that the use of these technologies will result in effective investment decisions for the Portfolio.

Risk/Return Bar Chart and Table

The bar chart and table below provide some indication of the risks of investing in the Portfolio by showing changes in the Portfolio's performance from year to year and by showing how the Portfolio's average annual total returns for the past one, five and ten years through December 31, 2023, compared to the returns of a broad-based securities market index.Past performance is not an indication of future performance.

The performance results do not reflect any Contract-related fees and expenses, which would reduce the performance results.

Calendar Year Annual Total Returns - Class IB

Best quarter (% and time period)	20.36%	2020 2nd Quarter
Worst quarter (% and time period)	-19.67%	2020 1st Quarter

Average Annual Total Returns

	One Year	Five Years	Ten Years
EQ/Equity 500 Index Portfolio - Class IA	25.57%	15.04%	11.37%
EQ/Equity 500 Index Portfolio - Class IB	25.57%	15.03%	11.37%
EQ/Equity 500 Index Portfolio - Class K	25.88%	15.33%	11.65%
S&P 500® Index (reflects no deduction for fees, expenses, or taxes)	26.29%	15.69%	12.03%

Who Manages the Portfolio

Investment Adviser: Equitable Investment Management Group, LLC ("EIM" or the "Adviser")

Portfolio Managers:The members of the team that are jointly and primarily responsible for the selection, monitoring and oversight of the Portfolio's Sub-Adviser are:

Name	Title	Date Began Managing the Portfolio
Kenneth T. Kozlowski, CFP®, CLU, ChFC	Executive Vice President and Chief Investment Officer of EIM	May 2011
Alwi Chan, CFA®	Senior Vice President and Deputy Chief Investment Officer of EIM	May 2009

Sub-Adviser: AllianceBernstein L.P. ("AllianceBernstein" or the "Sub-Adviser")

Portfolio Managers:The members of the team that are jointly and primarily responsible for the securities selection, research and trading for the Portfolio are:

Name	Title	Date Began Managing the Portfolio
Joshua Lisser	Senior Vice President/Chief Investment Officer, Index Strategies of AllianceBernstein	January 2022
Geoff Tomlinson, CFA®	Portfolio Manager, Index Strategies of AllianceBernstein	January 2022

The Adviser is responsible for overseeing Sub-Advisers and recommending their hiring, termination and replacement to the Board of Trustees. The Adviser has been granted relief by the Securities and Exchange Commission to hire, terminate and replace Sub-Advisers for the Portfolio and enter into and amend sub-advisory agreements on behalf of the Portfolio subject to the approval of the Board of Trustees and without obtaining shareholder approval. The Adviser may not enter into a sub-advisory agreement on behalf of the Portfolio with an "affiliated person" of the Adviser unless the sub-advisory agreement is approved by the Portfolio's shareholders. The relief does not extend to any increase in the advisory fee paid by the Portfolio to the Adviser; any such increase would be subject to shareholder approval.

PURCHASE AND REDEMPTION OF PORTFOLIO SHARES

The Portfolio's shares are currently sold only to insurance company separate accounts in connection with Contracts issued by Equitable Financial Life Insurance Company ("Equitable Financial") or other affiliated or unaffiliated insurance companies and The Equitable 401(k) Plan. Shares also may be sold to other portfolios managed by EIM that currently sell their shares to such accounts and to other investors eligible under applicable federal income tax regulations. Class K shares may be sold only to other portfolios of the Trust and certain group annuity plans.

The Portfolio does not have minimum initial or subsequent investment requirements. Shares of the Portfolio are redeemable on any business day (which typically is any day the New York Stock Exchange is open) upon receipt of a request. All redemption requests will be processed and payment with respect thereto will normally be made within seven days after tender. Please refer to your Contract prospectus for more information on purchasing and redeeming Portfolio shares.

TAX INFORMATION

The Portfolio's shareholders are (or may include) insurance company separate accounts and other investors eligible under applicable federal income tax regulations. Distributions made by the Portfolio to such an account, and exchanges and redemptions of Portfolio shares made by such an account, ordinarily do not cause the holders of underlying Contracts to recognize income or gain for federal income tax purposes at the time of the distributions, exchanges or redemptions; the holders generally are taxed only on amounts they withdraw from their Contract. See the prospectus for your Contract for further tax information.

PAYMENTS TO BROKER-DEALERS AND OTHER FINANCIAL INTERMEDIARIES

The Portfolio is not sold directly to the general public but instead is offered as an underlying investment option for Contracts and to other eligible investors. The Portfolio and the Adviser and its affiliates may make payments to sponsoring insurance companies (and their affiliates) or other financial intermediaries for distribution and/or other services. These payments may create a conflict of interest by influencing an insurance company or other financial intermediary and your financial adviser to recommend the Portfolio over another investment or by influencing an insurance company to include the Portfolio as an underlying investment option in the Contract. The prospectus (or other offering document) for your Contract may contain additional information about these payments. Ask your financial adviser or visit your financial intermediary's website for more information.