Notable Holders of Sonus Networks, Inc. (SONS)
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Expand Research on SONS
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* Does Not Fully Represent All Holders
| Fund | Title | Shares | % Owned | Source |
|---|---|---|---|---|
| ARTIS CAPITAL MANAGEMENT, L.P. | COM | 39,511,284 | 14.15% | 13F |
| Empire Capital Management, L.L.C. | COM | 19,803,357 | 7.09% | 13F |
| VANGUARD GROUP INC | COM | 11,627,940 | 4.16% | 13F |
| PRICE T ROWE ASSOCIATES INC /MD/ | COMM STK | 8,991,200 | 3.22% | 13F |
| BlackRock Institutional Trust Company, N.A. | COM | 5,967,611 | 2.14% | 13F |
| BlackRock Fund Advisors | COM | 4,954,463 | 1.77% | 13F |
| DIMENSIONAL FUND ADVISORS LP | COM | 4,645,856 | 1.66% | 13F |
| Contour Asset Management LLC | COM | 4,080,000 | 1.46% | 13F |
| SAC Capital | COMMON | 3,507,000 | 1.26% | 13F |
| NORTHERN TRUST CORP | COM | 2,779,608 | 1.00% | 13F |
| Lonestar Capital Management LLC | COM | 2,250,000 | 0.81% | 13F |
| Spot Trading L.L.C (CALL) | COM | 2,119,900 | 0.76% | 13F |
| Goldman Sachs Asset Management, L.P. | CMN | 1,857,586 | 0.67% | 13F |
| RS INVESTMENT MANAGEMENT CO LLC | COM | 1,374,770 | 0.49% | 13F |
| Shannon River Fund Management CO LLC | COM | 1,308,663 | 0.47% | 13F |
| ROYCE & ASSOCIATES LLC | COM | 1,124,000 | 0.40% | 13F |
| TIAA CREF INVESTMENT MANAGEMENT LLC | COM | 1,054,634 | 0.38% | 13F |
| Robertson Opportunity Capital, LLC | COM | 811,400 | 0.29% | 13F |
| SANDLER CAPITAL MANAGEMENT | COM | 791,690 | 0.28% | 13F |
| BRIGHTFIELD CAPITAL MANAGEMENT LLC | COMMON STOCK | 766,099 | 0.27% | 13F |
| GEODE CAPITAL MANAGEMENT LLC | COM | 737,871 | 0.26% | 13F |
| BlackRock Investment Management, LLC | COM | 737,684 | 0.26% | 13F |
| ASCEND CAPITAL LLC | COM | 737,565 | 0.26% | 13F |
| AMERIPRISE FINANCIAL INC | COM | 679,041 | 0.24% | 13F |
| Invesco Ltd. | COMMON | 668,623 | 0.24% | 13F |
| SCHWAB CHARLES INVESTMENT MANAGEMENT INC | COM | 661,428 | 0.24% | 13F |
| PEAK6 Investments, L.P. | COM | 607,600 | 0.22% | 13F |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | COM | 607,180 | 0.22% | 13F |
| BARCLAYS PLC (CALL) | OPT | 580,800 | 0.21% | 13F |
| KINGDON CAPITAL MANAGEMENT LLC | COM | 500,000 | 0.18% | 13F |
| Weiss Multi-Strategy Advisers LLC | COM | 500,000 | 0.18% | 13F |
| MASON STREET ADVISORS LLC | COM | 474,500 | 0.17% | 13F |
| WEISEL THOMAS PARTNERS ASSET MANAGEMENT LLC | COM | 459,332 | 0.16% | 13F |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM | * SONUS NETWORKS INC | 413,881 | 0.15% | 13F |
| OXFORD ASSET MANAGEMENT | COM | 346,582 | 0.12% | 13F |
| WELLS FARGO & CO/MN | EQUITY | 292,610 | 0.10% | 13F |
| DEUTSCHE BANK AG\ | COM | 267,393 | 0.10% | 13F |
| TEACHERS ADVISORS INC | COM | 192,393 | 0.07% | 13F |
| Manulife Asset Management (North America) Ltd | COM | 171,298 | 0.06% | 13F |
| RUSSELL FRANK CO/ | COMMON STOCKS | 163,670 | 0.06% | 13F |
| CURIAN CAPITAL LLC | COM | 154,777 | 0.06% | 13F |
| AMERICAN INTERNATIONAL GROUP INC | COM | 154,115 | 0.06% | 13F |
| Fidelity Investments | COM | 148,199 | 0.05% | 13F |
| BLACKROCK ADVISORS LLC | COM | 142,989 | 0.05% | 13F |
| CREDIT SUISSE AG/ | COM | 141,079 | 0.05% | 13F |
| Bascom Hill Partners, LLC | COM | 120,000 | 0.04% | 13F |
| ING INVESTMENT MANAGEMENT CO | COM | 118,820 | 0.04% | 13F |
| Neuberger Berman Group LLC | COMMON STOCK | 118,405 | 0.04% | 13F |
| PARAMETRIC PORTFOLIO ASSOCIATES | Common Stock | 114,940 | 0.04% | 13F |
| CITIGROUP INC | COM | 114,931 | 0.04% | 13F |
| Porter Orlin LLC | COM | 105,000 | 0.04% | 13F |
| WEINTRAUB CAPITAL MANAGEMENT, L.P. | COM | 100,000 | 0.04% | 13F |
| MORGAN STANLEY | COM | 89,764 | 0.03% | 13F |
| FIRST TRUST ADVISORS LP | COM | 89,229 | 0.03% | 13F |
| BlackRock Group LTD | COM | 76,555 | 0.03% | 13F |
| PRINCIPAL FINANCIAL GROUP INC | COM | 75,823 | 0.03% | 13F |
| Citadel | CMN | 70,677 | 0.03% | 13F |
| Liberty Mutual Group Asset Management Inc. | COM | 69,115 | 0.02% | 13F |
| Timber Hill LLC (CALL) | CALL | 50,300 | 0.02% | 13F |
| WOLVERINE ASSET MANAGEMENT LLC | COM | 47,778 | 0.02% | 13F |
| JPMORGAN CHASE & CO | COMMON | 43,447 | 0.02% | 13F |
| MAIRS & POWER INC | COM | 33,552 | 0.01% | 13F |
| ALLSTATE CORP | COMMON | 32,640 | 0.01% | 13F |
| Commonwealth Equity Services, Inc | COM | 32,150 | 0.01% | 13F |
