SSMAX
SIIT SMALL/MID CAP FUND
SEI INSTITUTIONAL INVESTMENTS TRUST
Expense ratio1
0.72%
Net assets2
$888.30M
Holdings2
448
Category
US Equity
2025 return3
2.51%

Investment objective & strategy

As of Sept. 26, 2025 · prospectus

Objective. Long-term capital appreciation.

Strategy. Under normal circumstances, the Small/Mid Cap Equity Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities (including common and preferred stocks) of small and medium-sized companies, exchange-traded funds (ETFs) based on small and medium-sized capitalization indexes and securities of real estate investment trusts (REITs). The Fund will invest primarily in common stocks of U.S. companies with market capitalizations in the range of companies in the Russell 2500 Index (between $21.4 million and $28.1 billion as of July 31, 2025) at the time of purchase. The market capitalization range and the composition of the Russell 2500 Index are subject to change. The Fund's investments in equity securities may … Under normal circumstances, the Small/Mid Cap Equity Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities (including common and preferred stocks) of small and medium-sized companies, exchange-traded funds (ETFs) based on small and medium-sized capitalization indexes and securities of real estate investment trusts (REITs). The Fund will invest primarily in common stocks of U.S. companies with market capitalizations in the range of companies in the Russell 2500 Index (between $21.4 million and $28.1 billion as of July 31, 2025) at the time of purchase. The market capitalization range and the composition of the Russell 2500 Index are subject to change. The Fund's investments in equity securities may include, to a lesser extent, securities of large capitalization companies. The Fund uses a multi-manager approach, relying upon one or more sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC or the Adviser). Each Sub-Adviser, in managing its portion of the Fund's assets, generally applies a growth-oriented, a value-oriented or a blended approach to selecting investments. Growth-oriented managers generally select stocks they believe have attractive growth and appreciation potential in light of such characteristics as revenue and earnings growth, expectations from sell-side analysts and relative valuation, while value-oriented managers generally select stocks they believe are attractively valued in light of fundamental characteristics such as earnings, capital structure and/or return on invested capital.

Top holdings

As of Feb. 28, 2026 · N-PORT
SecurityTickerValue% of fund
SEI DAILY INCOME TRUST GOVERNMENT FUND (#36) $22.64M 2.55%
RBC BEARINGS INC $11.20M 1.26%
ENSIGN GROUP INC $9.62M 1.08%
CASEY'S GENERAL $8.38M 0.94%
LITTELFUSE INC $6.83M 0.77%
KEYSIGHT TECHNOLOGIES INC $6.68M 0.75%
AAON INC COMMON STOCK $6.55M 0.74%
ADVANCED DRAINAGE SYSTEMS INC $5.68M 0.64%
BALCHEM CORP COMMON STOCK $5.32M 0.60%
FABRINET $5.26M 0.59%
View all holdings →

Allocation by sector

As of February 28, 2026 · N-PORT
View portfolio breakdown →

Portfolio moves

Nov 30, 2025 → Feb 28, 2026
Opened
50
Exited
61
Increased
33
Decreased
212
Unchanged
153

How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.

View portfolio moves →

Similar funds

Funds whose portfolios most overlap this one, by weight
FundOverlapNet exp.
SIIT SMALL CAP FUND · SLPAX 49% 0.72%
SIMT Small Cap Growth Fund · SPWIX, SSCGX, SMAYX 35% 0.99%
SIMT Small Cap Fund · SLLAX, SMYFX 34% 0.98%
View all similar funds →

Advisers

As of May 31, 2025 · N-CEN
FirmRole
Copeland Capital Management, LLC Sub-adviser
Axiom Investors LLC Sub-adviser
SEI INVESTMENTS MANAGEMENT Corporation Adviser
Geneva Capital Management LLC Sub-adviser
LSV Asset Management Sub-adviser
Jackson Creek Investment Advisors LLC Sub-adviser

Footnotes

  1. Expense ratio as of September 26, 2025, from the fund's prospectus.
  2. Net assets and holdings count as of February 28, 2026, from the fund's N-PORT filing.
  3. Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).

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