Among the constituents of the S&P 500, Costco and Progressive have the largest percentage of their outstanding shares held directly by pension plans and retirement funds. In both instances, Costco and Progressive retirement plans hold the highest allocation of their respective company shares. The New York State Common Fund, the California Public Employees' Retirement System and the California State Teachers' Retirement System hold large positions across the top 10 S&P 500 stocks held by pension or retirement funds. This list does not include stocks held by money managers in the retirement plans' names.
