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 PetSmart, Inc. (NASDAQ:PETM).

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

WELLINGTON MANAGEMENT CO LLP: On 06/30/2011, held 0 shares. On 09/30/2011, held 690,607 shares, worth $29,364,610.

HUSSMAN ECONOMETRICS ADVISORS, INC.: On 06/30/2011, held 0 shares. On 09/30/2011, held 625,000 shares, worth $26,575,000.

MORGAN STANLEY: On 06/30/2011, held 0 shares. On 09/30/2011, held 429,495 shares, worth $18,262,127.

COHEN & STEERS INC: On 06/30/2011, held 0 shares. On 09/30/2011, held 418,500 shares, worth $17,794,620.

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO: On 06/30/2011, held 0 shares. On 09/30/2011, held 277,900 shares, worth $11,816,308.

About the company: PetSmart, Inc. is a specialty retailer of products and services for pets. The Company operates pet superstores in the United States and Canada, as well as a pet supply catalog business, and an equity interest in PetSmart.com. PetSmart provides pet food and supplies, and offers full-service veterinary, grooming and pet training services.

Competitors to Watch: PetMed Express (NASDAQ:PETS), Rite Aid (NYSE:RAD), Walgreen (NYSE:WAG), CVS (NYSE:CVS), Target (NYSE:TGT), Wal-Mart (NYSE:WMT), Ulta Salon, Cosmetics & Fragrance, Inc. (NASDAQ:ULTA).

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

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