The Top Holding for CalPERS, America's Largest Public Pension Fund, Is the Closest Thing You'll Find to a Guaranteed Investment on Wall Street

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Key Points

  • The quarterly filing of Form 13Fs allows investors to see which stocks and exchange-traded funds (ETFs) the brightest money managers and biggest funds have been buying and selling.

  • The California Public Employees' Retirement System (CalPERS) has $143 billion spread across north of 1,100 securities (stocks and ETFs).

  • CalPERS' largest position is a security that's never declined, on a total return basis, over rolling 20-year periods since 1900.

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There's nothing more important to investors than data -- and they're rarely, if ever, lacking for it on Wall Street. Between earnings reports, regular U.S. economic data releases, and Donald Trump's administration changing its tune on tariff and trade policy on a seemingly regular basis, there's always something for investors to dive into and learn.

May 15 marked one of these pivotal data releases for investors.

No later than 45 calendar days following the end to a quarter, institutional investors managing at least $100 million are required to file Form 13F with the Securities and Exchange Commission. A 13F provides a snapshot for investors that allows them to see which stocks, exchange-traded funds (ETFs), and (select) options contracts Wall Street's most-prominent money managers have been buying and selling. It's a nice way to uncover which securities and trends are piquing the attention of big-money investors.

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Image source: Getty Images.

But there's a big world of investment dollars that extends beyond Berkshire Hathaway's Warren Buffett and select billionaire fund managers -- and it pays to know what these funds are holding.

For example, the California Public Employees' Retirement System, commonly known as CalPERS, manages north of $500 billion in assets on behalf of its more than 2 million members, which includes public employees, retirees, and their families. CalPERS spreads its investment capital across a broad swath of asset classes, including fixed income (e.g., Treasury bonds), private debt, private equity, and of course, public equities (stocks and ETFs).

Though CalPERS closed the March-ended quarter with north of 1,100 securities in its portfolio, it's the top holding for America's largest pension fund that really stands out and delivers with long-term consistency.

America's largest pension fund owns pieces of many of America's most-influential businesses

Based on CalPERS' 13F, its fund managers were overseeing approximately $143.1 billion in invested assets as of the end of March. With this being a highly diversified pension fund, only 14 of these positions equated to 1% or more of invested assets.