Insiders are generally long-term investors due to restriction in making short-term profits. In contrast, wealth management institutions always have short-term investment. Wall St. Watchdog reveals information regarding the insiders and institutions which recently increased stock shares of Waste Management, Inc. (NYSE:WM).

SEC data indicate that these institutions significantly increased their stock shares of Waste Management, Inc. in Q3 2011:

• GRIMES & COMPANY, INC.: On 06/30/2011, held 0 shares. On 09/30/2011, held 93,686 shares, worth $3,015,752.
• FERGUSON WELLMAN CAPITAL MANAGEMENT, INC: On 06/30/2011, held 0 shares. On 09/30/2011, held 11,052 shares, worth $355,764.
• AMERICA FIRST INVESTMENT ADVISORS, LLC: On 06/30/2011, held 0 shares. On 09/30/2011, held 10,300 shares, worth $331,557.

About the company: Waste Management, Inc. provides waste management services including collection, transfer, recycling, resource recovery and disposal services, and operates waste-to-energy facilities. The Company serves municipal, commercial, industrial, and residential customers throughout North America.

Competitors to Watch: Republic Services, Inc. (NYSE:RSG), Waste Connections, Inc. (NYSE:WCN), Stericycle, Inc. (NASDAQ:SRCL), WCA Waste Corporation (NASDAQ:WCAA), Casella Waste Systems Inc. (NASDAQ:CWST), Perma-Fix Environmental Services, Inc. (NASDAQ:PESI), Clean Harbors, Inc. (NYSE:CLH), Veolia Environnement (NYSE:VE), US Ecology Inc. (NASDAQ:ECOL), and Avalon Holdings Corp. (AMEX:AWX).

(Note: Data regarding Waste Management, Inc.’s stock holdings are sourced from whalewisdom.com. All data are assumed to be accurate.)

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