Summary of Plan Provisions
Return on Investment
Other Actuarial Services
Historical Return on Investment
The rates of return shown below represent the change in asset value for the retirement funds managed by the
Washington State Investment Board
(WSIB) as the Commingled Trust Fund (CTF).
We have estimated investment returns prior to 1982 in the
Report on Long-Term Economic Assumptions. Please see the report for more details.
Last Reviewed: 10/27/2015
Last Updated: 10/27/2015
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