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About N/A of shares are held by financial institutions. ALLIANZ ASSET MANAGEMENT GMBH is the top corporate investor, holding 384.27K shares valued at $11.23M. A 1.2% stake in Constant Contact, Inc. is owned by the company. GABELLI FUNDS LLC owns 129.5K shares valued at $3.79M, which translates its holding of 0.4% of the stake in the company.
| Date | Holder | % Stake | Shares Held | Total Value ($) | Shares | % Change in Portfolio |
|---|---|---|---|---|---|---|
| Dec 31, 2015 | ALLIANZ ASSET MANAGEMENT GMBH | 1.2% | 384.27K | 11.23M | 368.15K | +2,283.94% |
| Dec 31, 2015 | GABELLI FUNDS LLC | 0.4% | 129.5K | 3.79M | 129.5K | +100.00% |
| Dec 31, 2015 | COASTLAND CAPITAL LLC | 1.91% | 612.75K | 17.92M | 612.75K | +100.00% |
| Dec 31, 2015 | INVESCO LTD. | 0.49% | 158.48K | 4.63M | -7.05K | -4.26% |
| Dec 31, 2015 | TWO SIGMA INVESTMENTS, LP | 0.49% | 156.18K | 4.57M | 156.18K | +100.00% |
| Dec 31, 2015 | GRANAHAN INVESTMENT MANAGEMENT, LLC | 2.32% | 745.04K | 21.79M | -435.39K | -36.88% |
| Dec 31, 2015 | DIMENSIONAL FUND ADVISORS LP | 2.26% | 724.92K | 21.2M | 1.24K | +0.17% |
| Dec 31, 2015 | SAND GROVE CAPITAL MANAGEMENT LLP | 2.07% | 663.14K | 19.34M | 663.14K | +100.00% |
| Dec 31, 2015 | NORGES BANK | 0.93% | 297.01K | 8.69M | 0 | 0 |
| Dec 31, 2015 | ALPINE ASSOCIATES MANAGEMENT INC. | 6.6% | 2.12M | 61.91M | 2.12M | +100.00% |
| Dec 31, 2015 | BLACKROCK FUND ADVISORS | 6.27% | 2.01M | 58.85M | 93.15K | +4.85% |
| Dec 31, 2015 | GOLDMAN SACHS GROUP INC | 6.2% | 1.99M | 58.18M | 1.63M | +447.82% |
| Dec 31, 2015 | MAGNETAR FINANCIAL LLC | 4.53% | 1.45M | 42.47M | 1.45M | +100.00% |
| Dec 31, 2015 | DEUTSCHE BANK AG\ | 1.93% | 619.47K | 18.11M | 453.44K | +273.10% |
| Dec 31, 2015 | STATE STREET CORP | 1.9% | 610.35K | 17.85M | -35.14K | -5.44% |
| Dec 31, 2015 | OXFORD ASSET MANAGEMENT LLP | 1.09% | 350K | 10.21M | 252.32K | +258.29% |
| Dec 31, 2015 | ROYSTONE CAPITAL MANAGEMENT LP | 1.05% | 335.8K | 9.82M | 335.8K | +100.00% |
| Dec 31, 2015 | D. E. SHAW & CO., INC. | 1.8% | 576.34K | 16.85M | 566.06K | +5,509.10% |
| Dec 31, 2015 | INVESTOR AB | 0.56% | 179.74K | 5.26M | 0 | 0 |
| Dec 31, 2015 | VANGUARD GROUP INC | 7.83% | 2.51M | 73.47M | 34.9K | +1.41% |
| Dec 31, 2015 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 1.22% | 390.63K | 11.42M | 390.63K | +100.00% |
| Dec 31, 2015 | NORTHERN TRUST CORP | 1.21% | 387.19K | 11.32M | 7.79K | +2.05% |
| Dec 31, 2015 | CITIGROUP INC | 1.11% | 357.28K | 10.45M | 339.92K | +1,957.72% |
| Dec 31, 2015 | WELLINGTON MANAGEMENT GROUP LLP | 0.97% | 310.08K | 9.07M | -221.13K | -41.63% |
| Dec 31, 2015 | LONGFELLOW INVESTMENT MANAGEMENT CO LLC | 0.93% | 299.14K | 8.75M | 299.14K | +100.00% |
| Dec 31, 2015 | BARDIN HILL MANAGEMENT PARTNERS LP | 0.64% | 204.94K | 5.99M | 204.94K | +100.00% |
| Dec 31, 2015 | GEODE CAPITAL MANAGEMENT, LLC | 0.64% | 204.7K | 5.99M | -190.46K | -48.20% |
| Dec 31, 2015 | WELCH & FORBES LLC | 0.6% | 191.54K | 5.6M | -57.33K | -23.04% |
| Dec 31, 2015 | RENAISSANCE TECHNOLOGIES LLC | 2.57% | 824K | 24.09M | 304.5K | +58.61% |
| Dec 31, 2015 | TIAA CREF INVESTMENT MANAGEMENT LLC | 0.48% | 153.05K | 4.48M | -28.75K | -15.81% |
| Dec 31, 2015 | QS INVESTORS, LLC | 0.42% | 133.21K | 3.9M | 9 | +0.01% |
| Dec 31, 2015 | AQR ARBITRAGE LLC | 6.06% | 1.94M | 56.83M | 1.94M | +100.00% |
| Dec 31, 2015 | JPMORGAN CHASE & CO | 1.55% | 498.06K | 14.56M | 498.06K | +100.00% |
| Dec 31, 2015 | BANK OF NEW YORK MELLON CORP | 1.37% | 438.83K | 12.83M | -541.08K | -55.22% |
| Dec 31, 2015 | GAGNON SECURITIES LLC | 0.6% | 191.47K | 5.6M | -61.63K | -24.35% |
| Dec 31, 2015 | BROWN ADVISORY INC | 0.37% | 119.04K | 3.48M | 0 | 0 |
| Dec 31, 2015 | BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A. | 2.49% | 797.31K | 23.31M | -236.29K | -22.86% |
| Dec 31, 2015 | MORGAN STANLEY | 2.32% | 744.68K | 21.78M | 717.96K | +2,687.19% |
| Dec 31, 2015 | OMERS ADMINISTRATION CORP | 1.56% | 501.96K | 14.68M | 501.96K | +100.00% |
| Dec 31, 2015 | RICE HALL JAMES & ASSOCIATES, LLC | 0.86% | 276.78K | 8.09M | -91.55K | -24.86% |
| Dec 31, 2015 | GLAZER CAPITAL, LLC | 0.8% | 255.29K | 7.47M | 255.29K | +100.00% |
| Dec 31, 2015 | PANAGORA ASSET MANAGEMENT INC | 0.72% | 229.85K | 6.72M | 25.19K | +12.31% |
| Dec 31, 2015 | PRINCIPAL FINANCIAL GROUP INC | 0.66% | 211.45K | 6.18M | 9.1K | +4.50% |
| Dec 31, 2015 | AMERIPRISE FINANCIAL INC | 0.64% | 206.48K | 6.04M | -222.39K | -51.85% |
| Dec 31, 2015 | GAGNON ADVISORS, LLC | 0.57% | 184.31K | 5.39M | 0 | 0 |
| Dec 31, 2015 | DISCIPLINED GROWTH INVESTORS INC /MN | 0.48% | 155.13K | 4.54M | -79.7K | -33.94% |
| Dec 31, 2015 | K2 PRINCIPAL FUND, L.P. | 0.4% | 127.1K | 3.72M | 127.1K | +100.00% |
| Dec 31, 2015 | BLACKROCK INVESTMENT MANAGEMENT, LLC | 0.38% | 121.32K | 3.55M | -9.52K | -7.28% |
| Dec 31, 2015 | MARSHALL WACE, LLP | 1.34% | 428.5K | 12.53M | 308.89K | +258.24% |
| Dec 31, 2015 | SIMCOE CAPITAL MANAGEMENT, LLC | 1.12% | 358.34K | 10.48M | 44.74K | +14.27% |