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

• Vanguard owns 2.37M shares worth $82.96M
• Wellington Management Company owns 1.19M shares worth $41.75M
• GOLDMAN SACHS owns 1.17M shares worth $41.09M
• Brookfield Investment Management owns 1.03M shares worth $16.83M
• OppenheimerFunds owns 775338 shares worth $27.12M
• JPMORGAN CHASE & CO owns 689346 shares worth $17.80M
• Adelante Capital Management owns 681972 shares worth $17.61M
• CB Richard Ellis Global Real Estate Securities owns 678765 shares worth $10.75M
• Commonwealth Bank of Australia owns 532496 shares worth $14.73M
• Millennium Management owns 475256 shares worth $8.47M
• Columbia Wanger Asset Management owns 458850 shares worth $16.05M
• NUMERIC INVESTORS owns 437872 shares worth $11.31M
• Bank of America Corporation owns 421814 shares worth $11.66M
• Manning & Napier Advisors owns 399060 shares worth $13.96M
• ALLIANCEBERNSTEIN owns 398685 shares worth $7.10M
• STATE STREET CORPORATION owns 397720 shares worth $13.91M
• Heitman Real Estate Securities owns 387160 shares worth $10.71M
• Ameriprise Financial owns 326819 shares worth $8.44M
• ARONSON JOHNSON ORTIZ owns 305600 shares worth $10.69M
• ING Investment Management Co Address: 10 State House Square owns 302300 shares worth $10.58M
• AQR Capital Management owns 296334 shares worth $10.37M
• Palisade Capital Management owns 292242 shares worth $10.22M
• Principal Financial owns 279491 shares worth $7.53M
• AEW Capital Management owns 257800 shares worth $6.95M
• Capital Growth Management owns 250000 shares worth $6.74M
• Renaissance Technologies owns 219200 shares worth $7.67M
• Teachers Advisors owns 216278 shares worth $7.57M
• WESTWOOD MANAGEMENT CORP /TX owns 194309 shares worth $5.37M
• Batterymarch Financial Management owns 190500 shares worth $6.66M
• Frank Russell Company owns 182710 shares worth $4.33M
• DIAM owns 171874 shares worth $4.60M
• DIAM owns 171874 shares worth $4.60M
• Charles Schwab Investment Management owns 167760 shares worth $4.47M
• William Blair $ Company owns 166900 shares worth $4.62M
• Land & Buildings Investment Management owns 166200 shares worth $4.59M

• Brookfield Asset Management sold on Dec. 31, 2011
• DAVIS SELECTED ADVISERS sold on Sept. 30, 2011
• ING CLARION REAL ESTATE SECURITIES sold on June 30, 2011
• FIL sold on March 31, 2011
• FMR sold on Dec. 31, 2010
• D. E. Shaw & Co sold on Dec. 31, 2010

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