Notable Holders of Acme Packet, Inc. (APKT)
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* Does Not Fully Represent All Holders
| Fund | Title | Shares | % Owned | Source |
|---|---|---|---|---|
| AMERIPRISE FINANCIAL INC | COM | 6,068,820 | 9.04% | 13F |
| Wellington | COM | 5,447,144 | 8.11% | 13F |
| Fidelity Investments | COM | 5,191,169 | 7.73% | 13F |
| VANGUARD GROUP INC | COM | 2,522,210 | 3.76% | 13F |
| TURNER INVESTMENT PARTNERS INC | COM | 1,685,877 | 2.51% | 13F |
| ALYDAR PARTNERS LLC | COM | 1,495,000 | 2.23% | 13F |
| ZEVENBERGEN CAPITAL INVESTMENTS LLC | COM | 1,477,725 | 2.20% | 13F |
| WELLS FARGO & CO/MN | EQUITY | 1,275,753 | 1.90% | 13F |
| BlackRock Institutional Trust Company, N.A. | COM | 1,073,408 | 1.60% | 13F |
| RCM CAPITAL MANAGEMENT LLC | COM | 917,230 | 1.37% | 13F |
| RUSSELL FRANK CO/ | COMMON STOCKS | 724,616 | 1.08% | 13F |
| WADDELL & REED FINANCIAL INC | COM | 705,850 | 1.05% | 13F |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | COM | 622,880 | 0.93% | 13F |
| Invesco Ltd. | COMMON | 621,041 | 0.93% | 13F |
| FRIESS ASSOCIATES LLC | COM | 558,893 | 0.83% | 13F |
| ALGER FRED MANAGEMENT INC | COMMON | 557,115 | 0.83% | 13F |
| Goldman Sachs Asset Management, L.P. | CMN | 528,125 | 0.79% | 13F |
| BlackRock Fund Advisors | COM | 480,467 | 0.72% | 13F |
| RAINIER INVESTMENT MANAGEMENT INC/ | COM | 457,520 | 0.68% | 13F |
| ATTRACTOR INVESTMENT MANAGEMENT INC | COM | 453,960 | 0.68% | 13F |
| NORTHERN TRUST CORP | COM | 423,961 | 0.63% | 13F |
| SAC Capital | COMMON | 416,081 | 0.62% | 13F |
| OPPENHEIMER FUNDS INC | COM | 412,220 | 0.61% | 13F |
| GRANAHAN INVESTMENT MANAGEMENT INC/MA | COM | 410,686 | 0.61% | 13F |
| Century Capital Management, LLC | COM | 387,569 | 0.58% | 13F |
| Citadel | CMN | 341,865 | 0.51% | 13F |
| TIAA CREF INVESTMENT MANAGEMENT LLC | COM | 315,347 | 0.47% | 13F |
| CORNERSTONE CAPITAL MANAGEMENT INC //MN | COM | 305,470 | 0.46% | 13F |
| PEAK6 Investments, L.P. | COM | 263,020 | 0.39% | 13F |
| NEW YORK STATE COMMON RETIREMENT FUND | COMMON STOCK | 242,730 | 0.36% | 13F |
| DEUTSCHE BANK AG\ | COM | 230,566 | 0.34% | 13F |
| BARCLAYS PLC (CALL) | OPT | 230,000 | 0.34% | 13F |
| TCW GROUP INC | COM | 207,025 | 0.31% | 13F |
| LEGG MASON CAPITAL MANAGEMENT INC | COM | 203,151 | 0.30% | 13F |
| PALISADE CAPITAL MANAGEMENT LLC/NJ | COM | 202,484 | 0.30% | 13F |
| DIMENSIONAL FUND ADVISORS LP | COM | 193,184 | 0.29% | 13F |
| Neuberger Berman Group LLC | COMMON STOCK | 191,924 | 0.29% | 13F |
| MADISON INVESTMENT HOLDINGS INC | COM | 185,180 | 0.28% | 13F |
| Walleye Trading LLC (CALL) | COM | 183,500 | 0.27% | 13F |
| GEODE CAPITAL MANAGEMENT LLC | COM | 179,632 | 0.27% | 13F |
| TWO SIGMA INVESTMENTS LLC | COM | 152,151 | 0.23% | 13F |
| UBS AG | COM | 145,876 | 0.22% | 13F |
| EMERALD ADVISERS INC/PA | COM | 138,943 | 0.21% | 13F |
| JEFFERIES GROUP INC /DE/ (CALL) | COM | 129,700 | 0.19% | 13F |
| CREDIT SUISSE AG/ (CALL) | COM | 128,700 | 0.19% | 13F |
| TEACHERS ADVISORS INC | COM | 123,276 | 0.18% | 13F |
| LORD ABBETT & CO LLC | COM | 119,235 | 0.18% | 13F |
| CHARTWELL INVESTMENT PARTNERS/PA | COM | 118,025 | 0.18% | 13F |
| IRONBRIDGE CAPITAL MANAGEMENT LP | COM | 106,965 | 0.16% | 13F |
| UBS GLOBAL ASSET MANAGEMENT AMERICAS INC | EQTY US OTC | 102,144 | 0.15% | 13F |
| Redwood Investments, LLC | COM | 95,104 | 0.14% | 13F |
| PARAMETRIC PORTFOLIO ASSOCIATES | Common Stock | 94,642 | 0.14% | 13F |
| CADENCE CAPITAL MANAGEMENT LLC | COM | 87,890 | 0.13% | 13F |
| CITIGROUP INC (CALL) | COM | 86,600 | 0.13% | 13F |
| BlackRock Investment Management, LLC | COM | 84,783 | 0.13% | 13F |
| Spot Trading L.L.C (CALL) | COM | 80,500 | 0.12% | 13F |
| GLG Partners LP | COM | 72,785 | 0.11% | 13F |
| STATE OF WISCONSIN INVESTMENT BOARD | COM | 70,160 | 0.10% | 13F |
| GRUBER & MCBAINE CAPITAL MANAGEMENT LLC | COM | 70,000 | 0.10% | 13F |
| EULAV ASSET MANAGEMENT, LLC | COM | 69,000 | 0.10% | 13F |
| GENEVA CAPITAL MANAGEMENT LTD/WI | COM | 67,860 | 0.10% | 13F |
| ING Investment Management (Europe) B.V. | COM | 67,800 | 0.10% | 13F |
| RAYMOND JAMES & ASSOCIATES | COM | 62,709 | 0.09% | 13F |
| MORGAN STANLEY | COM | 61,242 | 0.09% | 13F |
| PRICE T ROWE ASSOCIATES INC /MD/ | COMM STK | 60,700 | 0.09% | 13F |
| FIRST TRUST ADVISORS LP | COM | 58,763 | 0.09% | 13F |
| DRIEHAUS CAPITAL MANAGEMENT LLC | COM | 58,270 | 0.09% | 13F |
| SCHWAB CHARLES INVESTMENT MANAGEMENT INC | COM | 56,530 | 0.08% | 13F |
| ALLIANZ GLOBAL INVESTORS OF AMERICA L P | COM | 55,125 | 0.08% | 13F |
| JPMORGAN CHASE & CO | COMMON | 53,405 | 0.08% | 13F |
| CURIAN CAPITAL LLC | COM | 52,357 | 0.08% | 13F |
| SIGMA CAPITAL MANAGEMENT LLC | COMMON | 50,100 | 0.07% | 13F |
| SG Americas Securities, LLC | 49,478 | 0.07% | 13F | |
| AH Lisanti Capital Growth, LLC | COM | 46,775 | 0.07% | 13F |
| EMERALD MUTUAL FUND ADVISERS TRUST | COM | 46,499 | 0.07% | 13F |
| Jetstream Capital LLC | COM | 45,700 | 0.07% | 13F |
| BALYASNY ASSET MANAGEMENT LLC | COMMON STOCK | 45,000 | 0.07% | 13F |
| OBERWEIS ASSET MANAGEMENT INC/ | COM | 43,305 | 0.06% | 13F |
| Jane Street Holding, LLC (CALL) | COM | 40,600 | 0.06% | 13F |
| Harvest Capital Strategies LLC | COM | 40,428 | 0.06% | 13F |
| NEXT CENTURY GROWTH INVESTORS LLC | 36,313 | 0.05% | 13F | |
| 300 NORTH CAPITAL, LLC | COM | 33,819 | 0.05% | 13F |
| HBK INVESTMENTS L P | COM | 33,600 | 0.05% | 13F |
| Bay Hill Capital Management, LLC (PUT) | COM | 31,200 | 0.05% | 13F |
| ING INVESTMENT MANAGEMENT CO | COM | 29,500 | 0.04% | 13F |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | COM | 27,948 | 0.04% | 13F |
| STATE STREET CORP | COMMON STOCK | 25,894 | 0.04% | 13F |
| WOLVERINE ASSET MANAGEMENT LLC | COM | 24,450 | 0.04% | 13F |
| PRINCIPAL FINANCIAL GROUP INC | COM | 23,538 | 0.04% | 13F |
| TWO SIGMA ADVISERS, LLC | COM | 23,520 | 0.04% | 13F |
| UNIONBANCAL CORP | COM | 21,965 | 0.03% | 13F |
| Santa Fe Partners LLC | COM | 21,583 | 0.03% | 13F |
| ROYAL BANK OF CANADA \ | COM | 21,438 | 0.03% | 13F |
| Placemark Investments, Inc. | COM | 20,875 | 0.03% | 13F |
| BlackRock Group LTD | COM | 20,526 | 0.03% | 13F |
| COMERICA BANK | COM | 20,118 | 0.03% | 13F |
| Mizuho Asset Management Co.,Ltd. | COM | 19,600 | 0.03% | 13F |
| TOCQUEVILLE ASSET MANAGEMENT LP | COM | 19,585 | 0.03% | 13F |
| PARADIGM ASSET MANAGEMENT CO LLC | COM | 18,850 | 0.03% | 13F |
| GENEVA INVESTMENT MANAGEMENT OF CHICAGO LLC | COM | 18,180 | 0.03% | 13F |
| FIFTH THIRD ASSET MANAGEMENT INC | COM | 18,068 | 0.03% | 13F |
| PLURAL INVESTMENTS, LLC | COM | 17,000 | 0.03% | 13F |
| NOMURA HOLDINGS INC | CMN | 16,855 | 0.03% | 13F |
| MACKENZIE FINANCIAL CORP | ACME PACKET INC | 15,500 | 0.02% | 13F |
| OAK ASSOCIATES LTD /OH/ | COM | 15,400 | 0.02% | 13F |
| D. E. Shaw & Co., INC. (CALL) | COM | 14,664 | 0.02% | 13F |
| Advisors Asset Management, Inc. | COM | 13,704 | 0.02% | 13F |
| Evercore Wealth Management, LLC | COM | 12,425 | 0.02% | 13F |
| Fort Hill Capital Management, LLC (CALL) | COM | 12,200 | 0.02% | 13F |
| WEISEL THOMAS PARTNERS ASSET MANAGEMENT LLC | COM | 11,084 | 0.02% | 13F |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 10,920 | 0.02% | 13F | |
| Calamos Wealth Management LLC | COMMON STOCK | 10,511 | 0.02% | 13F |
| KNIGHT CAPITAL GROUP, INC. | COM | 10,386 | 0.02% | 13F |
| F&C Asset Management plc | COM | 10,000 | 0.01% | 13F |
| BLACKROCK ADVISORS LLC | COM | 9,854 | 0.01% | 13F |
| JANUS CAPITAL MANAGEMENT LLC | COM | 8,900 | 0.01% | 13F |
| Visium Asset Management, LP | COMMON STOCK | 8,500 | 0.01% | 13F |
| DENVER INVESTMENT ADVISORS LLC | COMMON | 8,468 | 0.01% | 13F |
| ALLSTATE CORP | COMMON | 7,520 | 0.01% | 13F |
| Hutchin Hill Capital, LP | COM | 7,500 | 0.01% | 13F |
| REGIONS FINANCIAL CORP | COM | 7,475 | 0.01% | 13F |
| CREDIT AGRICOLE S A | COM | 7,380 | 0.01% | 13F |
| AMERICAN INTERNATIONAL GROUP INC | COM | 7,352 | 0.01% | 13F |
| MARIETTA INVESTMENT PARTNERS LLC | COM | 7,290 | 0.01% | 13F |
| World Asset Management Inc | COM | 7,235 | 0.01% | 13F |
| GUGGENHEIM CAPITAL LLC | COM | 7,154 | 0.01% | 13F |
| ELLINGTON MANAGEMENT GROUP LLC | COM | 7,100 | 0.01% | 13F |
| Commonwealth Equity Services, Inc | COM | 7,072 | 0.01% | 13F |
| Magnetar Financial LLC | COM | 7,060 | 0.01% | 13F |
