SIMT Tax-Managed Managed Volatility Fund (First Prospectus Summary) | SIMT Tax-Managed Managed Volatility Fund

TAX-MANAGED MANAGED VOLATILITY FUND

Investment Goal

To maximize after-tax returns, but with a lower level of volatility than the
broad U.S. equity markets.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold
Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIMT Tax-Managed Managed Volatility Fund Class A
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	0.50%

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

Annual Fund Operating Expenses		SIMT Tax-Managed Managed Volatility Fund Class A
Management Fees		0.65%
Distribution (12b-1) Fees		none
Other Expenses		0.64%
Total Annual Fund Operating Expenses	[1]	1.29%

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

Expense Example (USD $)	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIMT Tax-Managed Managed Volatility Fund Class A	131	409	708	1,556

PORTFOLIO TURNOVER

The Fund 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 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 63%
of the average value of its portfolio.

Principal Investment Strategies

The Tax-Managed Managed Volatility Fund will typically invest in securities of
U.S. companies of all capitalization ranges. These securities may include common
stocks, preferred stocks, warrants and ETFs. The Fund may also, to a lesser
extent, invest in ADRs and securities of non-U.S. companies. Although the Fund
will be measured against the Russell 3000 Index, the Fund is expected to have
significant sector and market capitalization deviations from the index given its
focus on absolute risk as opposed to index relative risk. This could lead to
significant performance deviations relative to the index over shorter-term
periods.

The Fund uses a multi-manager approach, relying on a number of Sub-Advisers with
differing investment approaches to manage portions of the Fund's portfolio under
the general supervision of SIMC. In managing its portion of the Fund's assets,
each Sub-Adviser intends to achieve returns similar to those of the broad U.S.
equity markets in a tax-efficient fashion but with a lower level of volatility.
The Fund seeks to achieve lower volatility by constructing a portfolio of
securities that effectively weighs securities based on their total expected risk
and return without regard to market capitalization and industry. This will tend
to lead the Fund's Sub-Avisers to construct portfolios with a low beta relative
to the overall U.S. equity market. In addition, the Sub-Advisers will look to
manage the impact of taxes by controlling portfolio turnover levels, selling
stocks with the highest tax cost first and opportunistically harvesting losses
to offset gains where possible.

Principal Risks

Currency Risk - As a result of the Fund's investments in securities denominated
in, and/or receiving revenues in, foreign currencies, the Fund will be subject
to currency risk. Currency risk is the risk that foreign 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 hedged. In either
event, the dollar value of an investment in the Fund would be adversely
affected.

Depositary Receipts Risk - Depositary receipts, such as ADRs, are certificates
evidencing ownership of shares of a foreign issuer that are issued by depositary
banks and generally trade on an established market. Depositary receipts are
subject to many of the risks associated with investing directly in foreign
securities, including, among other things, political, social and economic
developments abroad, currency movements and different legal, regulatory and tax
environments.

Equity Market Risk - The risk that stock prices will fall over short or extended
periods of time.

Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF
generally reflect the risks of owning the underlying securities the ETF is
designed to track, although lack of liquidity in an ETF could result in its
value being more volatile than the underlying portfolio securities.

Foreign Investment Risk - The risk that non-U.S. securities may be subject to
additional risks due to, among other things, political, social and economic
developments abroad, currency movements and different legal, regulatory and tax
environments.

Investment Style Risk - The risk that securities selected as part of a managed
volatility strategy may underperform other segments of the equity markets or the
equity markets as a whole.
  
Liquidity Risk - The risk that certain securities may be difficult or impossible
to sell at the time and the price that the Fund would like. The Fund may have to
lower the price, sell other securities instead or forego an investment
opportunity, any of which could have a negative effect on Fund management or
performance.

Small and Medium Capitalization Companies Risk - The smaller and medium
capitalization companies in which the Fund invests may be more vulnerable to
adverse business or economic events than larger, more established companies. In
particular, small and medium capitalization companies may have limited product
lines, markets and financial resources and may depend upon a relatively small
management group. Therefore, small and medium capitalization stocks may be more
volatile than those of larger companies. Small and medium capitalization stocks
may be traded over-the-counter or listed on an exchange.

Taxation Risk - The Fund is managed to minimize tax consequences to investors,
but will likely earn taxable income and gains from time to time.

Loss of money is a risk of investing in the Fund.

Performance Information

The bar chart and the performance table below provide some indication of the
risks of investing in the Fund by showing changes in the Fund's performance from
year to year for each calendar year since inception and by showing how the
Fund's average annual returns for 1 year, and since the Fund's inception,
compared 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: 11.10% (09/30/09)
Worst Quarter: -17.20% (12/31/08)

Average Annual Total Returns (for the periods ended December 31, 2011)

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 Total Returns SIMT Tax-Managed Managed Volatility Fund	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class A	Class A Return Before Taxes	10.10%	3.02%	Dec. 20, 2007
Class A After Taxes on Distributions	Class A Return After Taxes on Distributions	9.27%	2.65%	Dec. 20, 2007
Class A After Taxes on Distributions and Sales	Class A Return After Taxes on Distributions and Sale of Fund Shares	7.65%	2.54%	Dec. 20, 2007
Russell 3000 Index Return	Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)	1.03%	(1.26%)	Dec. 20, 2007	[1]

[1] Because the Fund incurred AFFE during the most recent fiscal year, the operating expenses in this fee table will not correlate to the expense ratio in the Fund's financial statements (or the "Financial Highlights" section in the prospectus) because the financial statements include only the direct operating expenses incurred by the Fund, not the indirect costs of investing in other investment companies.

[1] Index returns are shown from December 31, 2007.