When using filings from the hedgies we track, Stephen Mandel's Lone Pine Capital had the most valuable position in TransDigm Group Incorporated (NYSE:TDG), worth close to $400.7 million, accounting for 2% of its total 13F portfolio. Sitting at the No. 2 spot is Alan Fournier of Pennant Capital Management, with a $337.5 million position; the fund has 6.3% of its 13F portfolio invested in the stock. Some other hedgies that are bullish include Lee Ainslie's Maverick Capital, Bain Capital's Brookside Capital and Andrew J. M. Spokes's Farallon Capital.