STATE STREET SMALL/MID CAP EQUITY INDEX FUND — new fund registration

STATE STREET INSTITUTIONAL INVESTMENT TRUST registered 2 new fund series on Form 485APOS, filed 2015-05-26. Featured series: STATE STREET SMALL/MID CAP EQUITY INDEX FUND.

Registration

Registrant / trust: STATE STREET INSTITUTIONAL INVESTMENT TRUST
CIK: 0001107414
Form: 485APOS
Filed: 2015-05-26
State of incorporation: MA
Accession: 0001193125-15-200068
Reported net assets: $767.4M

Series & classes (4)

Series	Class	Ticker	New
STATE STREET SMALL/MID CAP EQUITY INDEX FUND	Class A	SSMJX	Yes
STATE STREET SMALL/MID CAP EQUITY INDEX FUND	Class I	SSMLX	Yes
STATE STREET SMALL/MID CAP EQUITY INDEX FUND	Class K	SSMKX	Yes
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO	SSMHX	Yes

Fees (from the effective prospectus)

12b-1 fee: 0.25%
Gross expense ratio: 0.58%
Management fee: 0.03%
Net expense ratio: 0.50%
Other expenses: 0.30%

Investment objective

The State Street Small/Mid Cap Equity Index Fund (the Small/Mid Cap Equity Index Fund ? or the Fund) seeks to provide investment results that, before expenses, correspond generally to the total return of an index that tracks the performance of mid-to small- capitalization exchange traded U.S. equity securities.

Advisers

SSGA Funds Management, Inc. (Advisor)