Here are the stocks top hedge funds are buying

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Many investors follow what famous hedge fund managers such as David Tepper and Dan Loeb are doing, but there are unknown rising stars that are performing even better and soundly beating the market.

Who are these top stock pickers and what are they buying?

CNBC PRO asked Symmetric.io, a top hedge fund tracking firm, for a ranking of the best hedge fund managers and which companies' shares they are acquiring.

Four times a year, hedge funds file their long positions with the SEC and the information is released to the public 45 days after each quarter ends.

With the recently released June quarter filing data, Symmetric.io graded the stock-picking ability of more than 1,000 hedge funds in its database with a proprietary indicator called StockAlpha. It is derived by comparing the performance of equities in the fund to that of a sector ETF.

Here are StockAlpha's top 10 stock-picking hedge funds, many of them run by managers you've likely never heard of.