(Benzinga) Many investors consider tracking hedge fund moves central to their strategy. Let\u2019s take a look at the past week\u2019s most relevant hedge fund moves. GAMCO Investors Mario Gabelli\u2019s GAMCO Investors was quite active this week.On Tuesday, the fund disclosed a new position, with 2,980,338 shares of Common stock, in DealerTrack Technologies Inc (NASDAQ: TRAK). The stake, worth more than $185 million, accounts for 5.43 percent of the company\u2019s shares outstanding, and make of GAMCO the fifth largest known institutional investor.<\/p>\n
On Monday, Gabelli declared another move, this time in micro-cap Eastern Co (NASDAQ: EML). After acquiring 55,906 shares of Common Stock, the fund said it owns 387,341 shares, or 6.2 percent of the company\u2019s outstanding stock.Following this transaction, GAMCO is the second-largest institutional investor at Eastern Co, only trailing NSB Advisors.<\/p>\n
Two other big hedge funds (with equity portfolios worth more than $25 billion, each) disclosed moves this week. Stephen Mandel\u2019s Lone Pine Capital said it has added 3,010,321 shares of Class A Common Stock to its holding at Charter Communications, Inc. (NASDAQ: CHTR), taking them to 6,338,300 shares, which represent 5.7 percent of the company\u2019s outstanding stock. That makes it the second-biggest institutional investor, after SPO Advisory Corp and ahead of Warren Buffett\u2019s Berkshire Hathaway.<\/p>\n