NEW YORK ( Stockpickr) -- Appaloosa Management's David Tepper shot to hedge fund stardom in September 2010 when he predicted that stocks had nowhere to go but up. The S&P 500 complied, ending 2010 up about 13%. Last month, he returned to CNBC to say that though he's more cautious than he was several months ago, he's still bullish. "The economy is so much better now," he said, but "it's not a free ride in this market." He said equities still made for strong investments, singling out semiconductor stocks such as Micron ( MU). And Tepper was willing to put his money where his mouth was. In the fourth quarter he made a big enough purchase of Micron, a new position, to count it as one of Appaloosa's top holdings. With this in mind, Stockpickr, which tracks the top 30 holdings of various mutual funds, hedge funds and super investors, is taking a look at the holdings of Appaloosa Management -- in particular its tech holdings. Tepper continued to increase his exposure to tech in the fourth quarter. According to GuruFocus.com, his portfolio is now 21.9% weighted to tech, second only to his financials exposure. Here's a closer look at some of Tepper's largest financial holdings as of his latest 13F filing with the SEC, which reflects holdings as of Dec. 31, 2010. 10. Yahoo! As of the most-recent reporting period, Yahoo! ( YHOO) comprises 0.9% of Appaloosa's portfolio. The 2.7 million-share position represents a 3% decrease from the previous quarter. Yahoo! shows up in one of Stockpickr's most popular portfolios, that of George Soros' Soros Fund Management. Soros decreased his position by 35.2% in the most-recent quarter, to 2.2 million shares. Stock Overview: Yahoo! is a global Internet brand. It has a market of $21.6 billion and a 3.1 short interest ratio, and it trades at a P/E of 18.4. Analyst Ratings: Of 34 analysts covering the stock, 16 rate it a buy, 17 rate it a hold, and one rates it a sell. TheStreet Ratings has a C+ hold rating on the stock. More on Yahoo!: Yahoo! was one of Barclays' 30 best stock picks for 2011, and Scott Rothbort recently highlighted it as one of several stocks that could benefit from M&A in 2011.