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Class Y Prospectus | SIMT MULTI-ASSET ACCUMULATION FUND

MULTI-ASSET ACCUMULATION FUND

Investment Goal

Total return, including capital appreciation and income.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy, hold, and sell Fund shares. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in this table and examples below.

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	Class Y Prospectus SIMT MULTI-ASSET ACCUMULATION FUND Class Y
Management Fees of the Fund	0.75%
Management Fees of the Subsidiary	none
Total Management Fees	0.75%
Distribution (12b-1) Fees	none
Other Expenses of the Fund	0.32%
Other Expenses of the Subsidiary	none
Total Other Expenses	0.32%
Total Annual Fund Operating Expenses	1.07%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem or hold all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
Class Y Prospectus | SIMT MULTI-ASSET ACCUMULATION FUND | Class Y | USD ($)	109	340	590	1,306

PORTFOLIO TURNOVER

The Fund will pay 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 and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 72% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund will seek to generate total return over time by selecting investments from among a broad range of asset classes based upon SEI Investments Management Corporation's (SIMC) or the sub-adviser's (each, a Sub-Adviser and collectively, the Sub-Advisers) expectations of risk and return. The asset classes used and the Fund's allocations among asset classes will be determined based on SIMC's or the Sub-Adviser's views of fundamental, technical or valuation measures. The Fund's allocations among asset classes may be adjusted over short periods of time. At any point in time, the Fund may be diversified across many asset classes or concentrated in a limited number of asset classes. The Fund may obtain its exposures to the asset classes by investing directly in securities and other investments or indirectly through the use of other pooled investment vehicles and derivative instruments.

The Fund uses a multi-manager approach under the general supervision of SIMC, allocating its assets among one or more Sub-Advisers using different investment strategies. SIMC may also directly manage a portion of the Fund's portfolio.

The Fund may allocate all or a portion of its assets using a "risk parity" approach that seeks to balance risk across all capital market exposures, which may result in asset classes with lower perceived risk having a greater notional allocation within the Fund's portfolio than asset classes with higher perceived risk. Notional allocation refers to the Fund's use of one or more derivative contracts to attempt to obtain exposure to a potential gain or loss on the market value of the instruments underlying the Fund's derivative contracts (e.g., a security, currency or commodity (or a basket or index)). The market value of such underlying instruments generally exceeds the amount of cash or assets required to establish or maintain the derivative contracts. In addition, the Fund may further adjust asset allocations and capital market exposures based on realized and expected measures of volatility with the goal of managing the Fund's volatility. This may result in the Fund increasing capital market exposures during periods of perceived falling risk and decreasing capital market exposures during periods of perceived rising risk.

The Fund may invest in equity securities, including common stocks, preferred stocks, convertible securities, warrants and depositary receipts of U.S. and non-U.S. issuers (including emerging markets) of various market capitalizations and industries.

The Fund may invest in fixed income securities that are investment or non-investment grade (also known as junk bonds), U.S.- or foreign-issued (including emerging markets) and corporate- or government-issued.

The Fund's fixed income investments may include asset-backed securities, mortgage-backed securities, corporate bonds and debentures, commercial paper, exchange traded notes (ETNs), money market instruments, mortgage dollar rolls, repurchase and reverse repurchase agreements, when issued/delayed delivery securities, zero coupon bonds, obligations of foreign governments and obligations of either supranational entities issued or guaranteed by certain banks and entities organized to restructure the outstanding debt of such issuers. The Fund's fixed income investments may also include obligations of U.S. and foreign banks, such as certificates of deposit and time deposits, U.S. Treasury obligations, obligations issued by agencies or instrumentalities of the U.S. Government (including obligations not guaranteed by the U.S. Treasury), such as obligations issued by U.S. Government sponsored entities, and Treasury Inflation Protected Securities (TIPS) and other inflation-linked debt securities of both U.S. and non-U.S. governments and corporations, and municipal bonds and debentures. The Fund may invest in fixed, variable and floating rate fixed income instruments. The Fund's portfolio and the Fund's investments in particular fixed income securities are not subject to any maturity or duration restrictions.

The Fund may also invest a portion of its assets in bank loans, which are, generally, non-investment grade floating rate instruments, in the form of participations in the loans or assignments of all or a portion of the loans from third parties.

In addition to direct investment in securities and other instruments, the Fund may invest in affiliated and unaffiliated funds, subject to the limitations of the Investment Company Act of 1940, as amended (1940 Act). Such investment may include open-end funds, money market funds, closed-end funds and exchange-traded funds (ETFs) (including leveraged and inverse ETFs). The Fund may also invest in real estate investment trusts (REITs) and securities issued by U.S. and non-U.S. real estate companies.

A portion of the Fund's assets may also be invested in commodity investments to provide exposure to the investment returns of the commodities markets. Commodity investments include notes with interest payments that are tied to an underlying commodity or commodity index, ETFs or other exchange-traded products that are tied to the performance of a commodity or commodity index or other types of investment vehicles or instruments that provide returns that are tied to commodities or commodity indexes. The Fund may also invest in equity securities of issuers in commodity-related industries.

The Fund may also seek to gain exposure to the commodity markets, in whole or in part, through investments in a wholly owned subsidiary of the Fund organized under the laws of the Cayman Islands (Subsidiary). The Subsidiary, unlike the Fund, may invest to a significant extent in commodities, commodity contracts and commodity investments (including through derivatives). The Subsidiary may also invest in other instruments in which the Fund is permitted to invest, either as investments or to serve as margin or collateral for its derivative positions. The Fund may invest up to 25% of its total assets in the Subsidiary. The Subsidiary is advised by SIMC.

The Fund, either directly or through its investment in the Subsidiary, may also purchase or sell futures contracts, options, forward contracts and swaps to obtain the Fund's desired exposure to an asset class or for return enhancement or hedging purposes. Futures contracts, forward contracts, options and swaps may be used to synthetically obtain exposure to securities or baskets of securities and to manage the Fund's interest rate duration and yield curve exposure. Due to the Fund's structure and level of turnover, derivative instruments may be an efficient method of obtaining exposure to various types of markets. Interest rate swaps are further used to manage the Fund's yield spread sensitivity. Securities index swaps may be used to obtain exposure to different U.S. and foreign equity markets. Futures and swaps on futures may be used to gain exposure to U.S. and foreign sovereign bond markets, equity markets and commodities markets. The Fund may sell credit default swaps to more efficiently gain credit exposure to a security or basket of securities.

The Fund may invest in U.S. dollar and non-U.S. dollar denominated securities. The Sub-Advisers may also seek to enhance the Fund's return by actively managing the Fund's foreign currency exposure. In managing the Fund's currency exposure, the Sub-Advisers may buy and sell currencies (i.e., take long or short positions) using futures and foreign currency forward contracts. The Fund may take long and short positions in foreign currencies in excess of the value of the Fund's assets denominated in a particular currency or when the Fund does not own assets denominated in that currency. The Fund may also engage in currency transactions in an attempt to take advantage of certain inefficiencies in the currency exchange market, to increase its exposure to a foreign currency or to shift exposure to foreign currency fluctuations from one currency to another. In managing the Fund's currency exposure from foreign securities, the Sub-Advisers may buy and sell currencies for hedging or for speculative purposes.

Principal Risks

Performance Information

The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception compare with those of a broad measure of market performance. The Fund's past performance

(before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Best Quarter: 10.23% (03/31/2019)
Worst Quarter: -12.47% (06/30/2022)
The Fund's Class Y Shares commenced operations on December 31, 2014. For the calendar year ended December 31, 2014, the performance of the Fund's Class F Shares is shown. The Fund's Class F Shares are offered in a separate prospectus. Because Class Y Shares are invested in the same portfolio of securities, returns for Class Y Shares would have been substantially similar to those of Class F Shares, shown here, and would have differed only to the extent that Class Y Shares have lower total annual fund operating expenses than Class F Shares

Average Annual Total Returns (for the periods ended December 31, 2023)

This table compares the Fund's average annual total returns to those of a broad-based index and the Fund's 60/40 Blended Benchmark, which consists of the MSCI World Index (net) (Hedged) (USD) (60%) and the Bloomberg Global Aggregate Index, Hedged (USD) (40%). The Fund's Blended Benchmark is designed to provide a useful comparison to the Fund's overall performance and more accurately reflects the Fund's investment strategy than the broad-based index.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Average Annual Returns - Class Y Prospectus - SIMT MULTI-ASSET ACCUMULATION FUND	Label	Average Annual Returns, 1 Year	[1]	Average Annual Returns, 5 Years	[1]	Average Annual Returns, 10 Years	[1]	Average Annual Returns, Since Inception	[1]	Average Annual Returns, Inception Date	[1]
Class Y	Return Before Taxes	6.77%		3.81%		3.53%		3.70%		Apr. 09, 2012
After Taxes on Distributions | Class Y	Return After Taxes on Distributions	5.84%		0.71%		0.99%		1.35%
After Taxes on Distributions and Sale of Fund Shares | Class Y	Return After Taxes on Distributions and Sale of Fund Shares	4.03%		1.97%		1.88%		2.09%
MSCI World Index (net) (Hedged) (USD) Index (reflects no deduction for fees or expenses)	MSCI World Index (net) (Hedged) (USD) Index (reflects no deduction for fees or expenses)	24.30%		13.93%		10.09%		11.48%		Apr. 09, 2012
The Fund's Blended Benchmark Return (reflects no deduction for fees, expenses or taxes)	The Fund's Blended Benchmark Return (reflects no deduction for fees, expenses or taxes)	17.26%		9.05%		7.18%		7.97%		Apr. 09, 2012

[1] The Fund's Class Y Shares commenced operations on December 31, 2014. For periods prior to December 31, 2014, the performance of the Fund's Class F Shares has been used. Returns for Class Y Shares would have been substantially similar to those of Class F Shares and would have differed only to the extent that Class Y Shares have lower total annual fund operating expenses than Class F Shares.