(Bloomberg) -- Timothy Pettee is beating all of his stock picking rivals without spending a lot of time picking stocks.

Pettee, who runs the $11.5 billion SunAmerica Focused Dividend Strategy Portfolio, selects 30 stocks only once a year using a quantitative model that does the heavy lifting. The mutual fund has returned 9.7% a year on average over the past decade, the best performance among more than 260 U.S. large-cap value funds, according to data compiled by Bloomberg.

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