Author: Trevor Jennewine, The Motley Fool

The Bill and Melinda Gates Foundation Trust has outperformed the S&P 500 over the last three years, with help from these brilliant long-term investments

The Bill and Melinda Gates Foundation Trust outperformed the S&P 500 by a wide margin over the past three years, in part because of these stocks.

It may be the next stock-split stock too.

Two catalysts could send it soaring in the coming months and years, making the present a good time to buy a small position.

This stock trades at a discount to its historical valuation, and shares look cheap given its future growth prospects.