Goldman: A strategy beating market for 4 years

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Investors can crush the market by piggybacking hedge funds, according to Goldman Sachs.

Goldman sent a report to clients on Wednesday with the latest changes to its "Twenty Most Concentrated" hedge-fund holdings basket.

The firm states a strategy of owning this basket that tracks the stocks with the highest percentage of their market cap owned by hedge funds has outperformed the market 70 percent of the time since 2001 by an average of 2.6 percent a quarter.

The basket is on track to handily beat the market for the fourth consecutive year with a 9 percent lead so far.

That performance is stellar considering that the stock picks can only be updated after big investors are forced to disclose their holdings a month and a half after the quarter ends.

"The most concentrated stocks continue to outperform in 2015 after posting exceptionally strong returns in each of the last three years," wrote Goldman's Ben Snider.

Here are the current top 10 stocks in Goldman's "Twenty Most Concentrated" hedge fund holdings basket…