How eight billionaires played Apple last quarter by Philip Elmer-DeWitt @FortuneMagazine November 23, 2014, 11:51 AM EST E-mail Tweet Facebook Google Plus Linkedin Share icons Doing what the billionaires do might not be the best way to manage your investments. But it’s the strategy that iBillionaire has chosen. What started as an iPhone app that tracked the securities holdings of the richest investors grew into a stock fund — Direxion iBillionaire Index ETF IBLN — that turned one-year-old last month. The fund mirrors the performance of 30 U.S. stocks in which a pool of up to 10 billionaires has invested the most assets. As part of a Q3 rebalancing, IBLN last week dumped some stocks (AIG, Microsoft, Netflix) and added others (Delta, General Motors, Facebook). Apple was one of the fund’s best performers and remains a top holding for eight of the investors that iBillionaire tracks: Carl Icahn, David Einhorn, Leon Cooperman, David Tepper, George Soros, Julian Robertson, Ray Dalio and Richard Chilton. See charts below. As I say, doing what the billionaires do may not be the best way to manage your investments. According to Yahoo Finance, IBLN grew 3.9% last year. In the same period, the S&P 500 grew 7.2%. Below: Charts provided exclusively to Fortune by iBillionaire. Follow Philip Elmer-DeWitt on Twitter at @philiped. Read his Apple AAPL coverage at fortune.com/ped or subscribe via his RSS feed.