Is MTZ a good stock to own? Find out who bought MasTec, who sold MasTec (MTZ) stock, and who holds a large position in MasTec.

• Frontier Capital Management owns 5.93M shares worth $147.74M
• Vanguard owns 3.26M shares worth $94.88M
• Inves owns 3.22M shares worth $93.86M
• American Century Companies owns 2.53M shares worth $73.62M
• Vaughan Nelson Investment Management owns 2.20M shares worth $64.19M
• Peconic Partners owns 2.14M shares worth $62.45M
• Timpani Capital Management owns 1.82M shares worth $1.82M
• FRIESS ASSOCIATES owns 1.46M shares worth $21.98M
• Columbus Circle Investors owns 1.41M shares worth $41.06M
• Ameriprise Financial owns 1.14M shares worth $17.10M
• GOLDMAN SACHS owns 1.07M shares worth $31.21M
• Heartland Advisors owns 1.06M shares worth $19.22M
• STATE STREET CORPORATION owns 1.02M shares worth $29.83M
• STRATTON MANAGEMENT owns 900000 shares worth $26.23M
• Brandywine Global Investment Management owns 853160 shares worth $12.83M
• Wentworth, Hauser & Violich owns 796100 shares worth $15.68M
• SAM Sustainable Asset Management owns 769000 shares worth $10.84M
• Robeco Institutional Asset Management B V owns 730000 shares worth $13.21M
• Nuveen Asset Management owns 710761 shares worth $0
• TEACHER RETIREMENT SYSTEM OF TEXAS owns 704375 shares worth $13.88M
• Sandler Capital Management owns 688600 shares worth $20.07M
• PUTNAM FL INVESTMENT MANAGEMENT owns 676293 shares worth $11.75M
• NorthPointe Capital owns 672989 shares worth $16.78M
• Pembroke Management owns 670400 shares worth $19.54M
• Royce & Associates owns 664945 shares worth $13.10M
• Rice Hall James & Associates owns 661881 shares worth $16.50M
• Loomis, Sayles and owns 659279 shares worth $13.00M
• Tahithromos owns 651821 shares worth $19.00M
• D. E. Shaw & Co owns 641691 shares worth $9.65M
• Millennium Management owns 641364 shares worth $15.99M
• Perimeter Capital Partners owns 629799 shares worth $11.39M

• ClearBridge Advisors sold on Sept. 30, 2011
• Gruber & McBaine Capital Management sold on Sept. 30, 2011
• Principal Financial sold on June 30, 2011
• Jeffrey L. Gendell sold on March 31, 2011
• FMR sold on Dec. 31, 2010
• IronBridge Capital sold on Dec. 31, 2010
• Roxbury Capital Management sold on Dec. 31, 2009
• Muhlenkamp & Company sold on Dec. 31, 2005

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