09/14/2026 | Press release | Distributed by Public on 09/14/2026 11:02
State Street Institutional Investment Trust
One Congress Street
Boston, MA 02114
September 14, 2026
VIA EDGAR
Securities and Exchange Commission
100 F Street, N.E.
Washington, D.C. 20549
| Attention: |
Office of Filings, Information & Consumer Service |
| Re: |
State Street Institutional Investment Trust (the "Trust") |
File Nos.: 811-09819 and 333-30810
Dear Sir or Madam:
Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, we are transmitting for filing via EDGAR on behalf of the Trust this letter as certification that the Prospectus and Statement of Additional Information for the Trust, dated September 9, 2026, do not differ from those contained in the Post-Effective Amendment No. 332 to the Trust's Registration Statement on Form N-1A that was filed electronically via EDGAR on September 9, 2026 (Accession #0001193125-26-386494).
If you have any questions, please contact me at (617) 664-6507.
Very truly yours,
| /s/ Edmund Gerard Maiorana, Jr. |
| Edmund Gerard Maiorana, Jr. |
| Assistant Secretary |