Tom Russo’s Gardner Russo & Garner 13F filing with the Securities and Exchange Commission (SEC) for the first quarter of 2013, showed that its assets under management increased from approximately $7.26 billion in the previous quarter to more than $8.5 billion. The biggest news could be the date of the filling. Tom Russo has filed his 13F nearly a month before the SEC requires one.

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During the quarter, Gardner Russo & Gardner sold out its stakes in five companies, added its position across 57 stocks, and bought stakes in 33 stocks.

The investment management firm’s largest position is Nestle SA (VTX:NESN) (ETR:NESR), which accounts 10.78 percent of its portfolio. Gardner Russo & Gardner purchased an additional 808,306 shares in Nestle bringing its total stock holding in the company to more than 12.6 million shares worth $919.7 million.

Gardner Russo & Gardner also boosted its stakes in Philip Morris International Inc. (NYSE:PM) by 824, 998 shares to more than 8.82 million shares. The stock represents 9.58 percent or $818 million in the firm’s portfolio. The investment management firm also boosted its stakes in its three other largest stock holdings including Berkshire Hathaway Inc. (NYSE:BRK.A) (NYSE:BRK.B), which account 8.85 percent, Heineken Holding NV (AMS:HEIO) 7.16 percent, and Compagnie Financiere Richemont SA (VTX:CFR) 6.74 percent.

Some of the new stock holdings of the investment management firm include AbbVie Inc (NYSE:ABBV), Kohl’s Corporation (NYSE:KSS), Amazon.com, Inc. (NASDAQ:AMZN), Boston Scientific Corporation (NYSE:BSX), Avis Budget Group Inc. (NASDAQ:CAR), Facebook Inc (NASDAQ:FB), J.C. Penney Company, Inc. (NYSE:JCP), Kohl’s Corporation (NYSE:KSS), LinkedIn Corp (NYSE:LNKD), and Netflix, Inc. (NASDAQ:NFLX) among others.

Gardner Russo & Gardner acquired a small number of shares (less than 450 shares) across its 33 new stock holdings except AbbVie Inc (NYSE:ABBV) and Kohl’s Corporation (NYSE:KSS), wherein the company purchased 88,250 shares and 4,000 shares respectively.

Several of the stocks in the investment management firm that increased its position include: Anheuser-Busch InBev NV (NYSE:BUD) (EBR:ABI) by 330,100 shares, Altria Group Inc (NYSE:MO) by 374,026 shares, and SABMILLER PLC ORD (PINK:SBMRF) by 540, 789 shares. Gardner  Russo & Gardner also boosted its stakes in Comcast Corporation (NASDAQ:CMCSA), Unilever N.V. (NYSE:UN) by 672,553 shares, and Wells Fargo & Co (NYSE:WFC) by more than 1 million shares.

Gardner Russo & Gardner sold out its stakes in Staples, Inc. (NASDAQ:SPLS), Intuitive Surgical, Inc. (NASDAQ:ISRG), Thomson Reuters Corporation (NYSE:TRI) (TSE:TRI), Express Scripts Holding Company (NASDAQ:ESRX), and JARDINE STRATEGIC HL (PINK:JDSHF).