ACACIA RESEARCH CORP - ACTG
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 3 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Starboard Value LP | History | No change | 61,123,595 | 228,602 | 4.33% | 3.74% | 1 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| STATE STREET CORP | History | Added to | 3,145,981 | 11,765 | 0.0% | 0.0% | 2 | +355,916 | 12.76% | Q4 2025 | Feb 13, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | Added to | 2,758,800 | 10,317 | 0.0% | 0.0% | 3 | +10,504 | 0.38% | Q4 2025 | Feb 12, 2026 |
| BlackRock, Inc. | History | Added to | 2,363,847 | 8,840 | 0.0% | 0.0% | 4 | +24,131 | 1.03% | Q4 2025 | Feb 12, 2026 |
| VANGUARD GROUP INC | History | Reduced | 2,087,925 | 7,808 | 0.0% | 0.0% | 5 | -193,702 | -8.49% | Q4 2025 | Jan 29, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 1,395,300 | 5,218 | 0.01% | 0.01% | 6 | -130,700 | -8.56% | Q4 2025 | Feb 12, 2026 |
| Krilogy Financial LLC | History | Added to | 1,243,413 | 4,899 | 0.17% | 0.16% | 7 | +45,015 | 3.76% | Q4 2025 | Jan 27, 2026 |
| LEVIN CAPITAL STRATEGIES, L.P. | History | Added to | 983,261 | 3,677 | 0.32% | 0.26% | 8 | +93,714 | 10.54% | Q4 2025 | Jan 30, 2026 |
| Peapod Lane Capital LLC | History | Added to | 845,954 | 3,216 | 2.74% | 2.11% | 9 | +119,783 | 16.5% | Q4 2025 | Jan 28, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 846,307 | 3,165 | 0.0% | 0.0% | 10 | +3,525 | 0.42% | Q4 2025 | Feb 09, 2026 |
| Formidable Asset Management, LLC | History | Reduced | 870,831 | 3,100 | 0.45% | 0.51% | 11 | -89,524 | -9.32% | Q4 2025 | Jan 16, 2026 |
| Pacific Ridge Capital Partners, LLC | History | Reduced | 810,324 | 3,030 | 0.67% | 0.6% | 12 | -28,877 | -3.44% | Q4 2025 | Feb 04, 2026 |
| AMERICAN CENTURY COMPANIES INC | History | Added to | 493,039 | 1,843 | 0.0% | 0.0% | 13 | +6,568 | 1.35% | Q4 2025 | Feb 13, 2026 |
| MORGAN STANLEY | History | Added to | 443,263 | 1,657 | 0.0% | 0.0% | 14 | +118,138 | 36.34% | Q4 2025 | Feb 13, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | Added to | 441,886 | 1,652 | 0.03% | 0.02% | 15 | +174,752 | 65.42% | Q4 2025 | Feb 17, 2026 |
| Tidal Investments LLC | History | Reduced | 437,428 | 1,635 | 0.0% | 0.0% | 16 | -26,510 | -5.71% | Q4 2025 | Feb 13, 2026 |
| Permanent Capital Management, LP | History | No change | 405,345 | 1,515 | 0.3% | 0.25% | 17 | 0 | 0.0% | Q4 2025 | Jan 07, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 354,227 | 1,324 | 0.0% | 0.0% | 18 | -95,861 | -21.3% | Q4 2025 | Feb 17, 2026 |
| GOLDMAN SACHS GROUP INC | History | Reduced | 308,992 | 1,155 | 0.0% | 0.0% | 19 | -38,646 | -11.12% | Q4 2025 | Mar 25, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 242,939 | 908 | 0.0% | 0.0% | 20 | -24,748 | -9.25% | Q4 2025 | Feb 17, 2026 |
| CORSAIR CAPITAL MANAGEMENT, L.P. | History | Added to | 166,672 | 623 | 0.1% | 0.06% | 21 | +46,327 | 38.5% | Q4 2025 | Feb 17, 2026 |
| JPMORGAN CHASE & CO | History | Added to | 140,037 | 523 | 0.0% | 0.0% | 22 | +37,006 | 35.92% | Q4 2025 | Feb 11, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 139,207 | 520 | 0.0% | 0.0% | 23 | -87,015 | -38.46% | Q4 2025 | Feb 17, 2026 |
| UBS Group AG | History | Reduced | 124,040 | 463 | 0.0% | 0.0% | 24 | -5,268 | -4.07% | Q4 2025 | Jan 29, 2026 |
| Bank of New York Mellon Corp | History | Reduced | 121,328 | 453 | 0.0% | 0.0% | 25 | -124,574 | -50.66% | Q4 2025 | Feb 10, 2026 |
| Capital Wealth Alliance, LLC | History | Reduced | 103,970 | 431 | 0.18% | 0.17% | 26 | -800 | -0.76% | Q4 2025 | Feb 17, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | No change | 114,965 | 429 | 0.0% | 0.0% | 27 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| GatePass Capital, LLC | History | Reduced | 99,800 | 373 | 0.19% | 0.2% | 28 | -5,500 | -5.22% | Q4 2025 | Feb 09, 2026 |
| Marquette Asset Management, LLC | History | New | 93,237 | 348 | 0.05% | — | 29 | +93,237 | New | Q4 2025 | Jan 16, 2026 |
| Jefferies Financial Group Inc. | History | No change | 85,000 | 317 | 0.0% | 0.0% | 30 | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| Invesco Ltd. | History | Added to | 77,143 | 288 | 0.0% | 0.0% | 31 | +3,252 | 4.4% | Q4 2025 | Feb 19, 2026 |
| FMR LLC | History | Added to | 74,914 | 280 | 0.0% | 0.0% | 32 | +12,104 | 19.27% | Q4 2025 | Feb 17, 2026 |
| Nuveen, LLC | History | No change | 57,333 | 214 | 0.0% | 0.0% | 33 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| BARCLAYS PLC | History | Added to | 53,468 | 199 | 0.0% | 0.0% | 34 | +5,203 | 10.78% | Q4 2025 | Feb 13, 2026 |
| AQR CAPITAL MANAGEMENT LLC | History | Added to | 52,862 | 197 | 0.0% | 0.0% | 35 | +19,590 | 58.88% | Q4 2025 | Feb 17, 2026 |
| JANE STREET GROUP, LLC | History | Reduced | 52,624 | 196 | 0.0% | 0.0% | 36 | -30,793 | -36.91% | Q4 2025 | Feb 12, 2026 |
| CITIZENS FINANCIAL GROUP INC/RI | History | New | 50,000 | 187 | 0.0% | — | 37 | +50,000 | New | Q4 2025 | Jan 30, 2026 |
| RHUMBLINE ADVISERS | History | Reduced | 44,890 | 167 | 0.0% | 0.0% | 38 | -7,867 | -14.91% | Q4 2025 | Feb 13, 2026 |
| Ethic Inc. | History | Added to | 39,114 | 146 | 0.0% | 0.0% | 39 | +19,485 | 99.27% | Q4 2025 | Feb 03, 2026 |
| WELLS FARGO & COMPANY/MN | History | Added to | 38,898 | 145 | 0.0% | 0.0% | 40 | +12,675 | 48.34% | Q4 2025 | Feb 13, 2026 |
| ALLIANCEBERNSTEIN L.P. | History | No change | 37,740 | 141 | 0.0% | 0.0% | 41 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| ELKHORN PARTNERS LIMITED PARTNERSHIP | History | Reduced | 34,500 | 129 | 0.08% | 0.08% | 42 | -1,000 | -2.82% | Q4 2025 | Feb 17, 2026 |
| MARSHALL WACE, LLP | History | Reduced | 34,327 | 128 | 0.0% | 0.0% | 43 | -29,466 | -46.19% | Q4 2025 | Feb 13, 2026 |
| NewEdge Advisors, LLC | History | New | 32,778 | 122 | 0.0% | — | 44 | +32,778 | New | Q4 2025 | Feb 18, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 28,573 | 106 | 0.0% | 0.0% | 45 | +12,811 | 81.28% | Q4 2025 | Feb 17, 2026 |
| LPL Financial LLC | History | New | 25,000 | 93 | 0.0% | — | 46 | +25,000 | New | Q4 2025 | Feb 11, 2026 |
| DEUTSCHE BANK AG\ | History | Reduced | 24,507 | 91 | 0.0% | 0.0% | 47 | -56,503 | -69.75% | Q4 2025 | Feb 11, 2026 |
| SNS Financial Group, LLC | History | No change | 22,000 | 82 | 0.01% | 0.01% | 48 | 0 | 0.0% | Q4 2025 | Feb 02, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | History | No change | 18,738 | 71 | 0.0% | 0.0% | 49 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| RAYMOND JAMES FINANCIAL INC | History | No change | 18,600 | 69 | 0.0% | 0.0% | 50 | 0 | 0.0% | Q4 2025 | Feb 18, 2026 |
| SIMPLEX TRADING, LLC | History | Added to | 18,081 | 67 | 0.0% | 0.0% | 51 | +13,659 | 308.89% | Q4 2025 | Feb 11, 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | History | Added to | 15,909 | 59 | 0.0% | 0.0% | 52 | +16 | 0.1% | Q4 2025 | Feb 17, 2026 |
| Sather Financial Group Inc | History | Added to | 15,304 | 57 | 0.0% | 0.0% | 53 | +509 | 3.44% | Q4 2025 | Jan 26, 2026 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | History | New | 14,615 | 54 | 0.0% | — | 56 | +14,615 | New | Q4 2025 | Feb 13, 2026 |
| ROYCE & ASSOCIATES LP | History | New | 14,611 | 54 | 0.0% | — | 55 | +14,611 | New | Q4 2025 | Feb 09, 2026 |
| SALEM INVESTMENT COUNSELORS INC | History | No change | 14,664 | 54 | 0.0% | 0.0% | 54 | 0 | 0.0% | Q4 2025 | Jan 12, 2026 |
| Investors Research Corp | History | Reduced | 14,009 | 52 | 0.01% | 0.01% | 57 | -600 | -4.11% | Q4 2025 | Jan 06, 2026 |
| Abel Hall, LLC | History | New | 13,648 | 51 | 0.01% | — | 59 | +13,648 | New | Q4 2025 | Feb 17, 2026 |
| INTECH INVESTMENT MANAGEMENT LLC | History | Reduced | 13,722 | 51 | 0.0% | 0.0% | 58 | -512 | -3.6% | Q4 2025 | Feb 10, 2026 |
| OCCUDO QUANTITATIVE STRATEGIES LP | History | New | 13,151 | 49 | 0.0% | — | 60 | +13,151 | New | Q4 2025 | Feb 17, 2026 |
| Police & Firemen's Retirement System of New Jersey | History | No change | 12,759 | 47 | 0.0% | 0.0% | 61 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| VICTORY CAPITAL MANAGEMENT INC | History | Added to | 10,964 | 41 | 0.0% | 0.0% | 62 | +53 | 0.49% | Q4 2025 | Feb 13, 2026 |
| ZIONS BANCORPORATION, NATIONAL ASSOCIATION /UT/ | History | New | 10,096 | 37 | 0.0% | — | 63 | +10,096 | New | Q4 2025 | Feb 11, 2026 |
| Pekin Hardy Strauss, Inc. | History | New | 10,000 | 37 | 0.0% | — | 64 | +10,000 | New | Q4 2025 | Jan 30, 2026 |
| Horizon Wealth Management, LLC | History | No change | 10,000 | 37 | 0.01% | 0.0% | 65 | 0 | 0.0% | Q4 2025 | Feb 04, 2026 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | No change | 8,921 | 33 | 0.0% | 0.0% | 66 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 8,464 | 31 | 0.0% | 0.0% | 67 | +1,135 | 15.49% | Q4 2025 | Feb 10, 2026 |
| Capital Advisors, Ltd. LLC | History | No change | 8,000 | 30 | 0.0% | 0.0% | 68 | 0 | 0.0% | Q4 2025 | Jan 21, 2026 |
| MAI Capital Management | History | New | 6,478 | 24 | 0.0% | — | 69 | +6,478 | New | Q4 2025 | Feb 13, 2026 |
| Tower Research Capital LLC (TRC) | History | Reduced | 3,284 | 12 | 0.0% | 0.0% | 70 | -5,140 | -61.02% | Q4 2025 | Feb 17, 2026 |
| CWM, LLC | History | Added to | 3,158 | 12 | 0.0% | 0.0% | 71 | +739 | 30.55% | Q4 2025 | Jan 26, 2026 |
| Russell Investments Group, Ltd. | History | Added to | 3,045 | 11 | 0.0% | 0.0% | 73 | +212 | 7.48% | Q4 2025 | Feb 17, 2026 |
| Ameritas Investment Partners, Inc. | History | No change | 3,139 | 11 | 0.0% | 0.0% | 72 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| Legal & General Group Plc | History | No change | 2,926 | 10 | 0.0% | 0.0% | 74 | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| GROUP ONE TRADING LLC | History | Reduced | 2,074 | 7 | 0.0% | 0.0% | 75 | -2,025 | -49.4% | Q4 2025 | Feb 12, 2026 |
| Sterling Capital Management LLC | History | Reduced | 1,971 | 7 | 0.0% | 0.0% | 77 | -389 | -16.48% | Q4 2025 | Feb 13, 2026 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | History | Reduced | 2,103 | 7 | 0.0% | 0.0% | 76 | -41 | -1.91% | Q4 2025 | Feb 17, 2026 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | No change | 1,513 | 5 | 0.0% | 0.0% | 78 | 0 | 0.0% | Q4 2025 | Feb 06, 2026 |
| ROYAL BANK OF CANADA | History | New | 1,031 | 4 | 0.0% | — | 80 | +1,031 | New | Q4 2025 | Feb 17, 2026 |
| AMALGAMATED BANK | History | Reduced | 1,074 | 4 | 0.0% | 0.0% | 79 | -208 | -16.22% | Q4 2025 | Feb 05, 2026 |
| HARBOR CAPITAL ADVISORS, INC. | History | Reduced | 877 | 3 | 0.0% | 0.0% | 81 | -15 | -1.68% | Q4 2025 | Jan 20, 2026 |
| OSAIC HOLDINGS, INC. | History | Reduced | 600 | 2 | 0.0% | 0.0% | 83 | -30,070 | -98.04% | Q4 2025 | Feb 17, 2026 |
| CITIGROUP INC | History | Reduced | 798 | 2 | 0.0% | 0.0% | 82 | -2,235 | -73.69% | Q4 2025 | Feb 13, 2026 |
| Torren Management, LLC | History | New | 772 | 2 | 0.0% | — | 85 | +772 | New | Q4 2025 | Jan 30, 2026 |
| Optiver Holding B.V. | History | No change | 542 | 2 | 0.0% | 0.0% | 84 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Private Wealth Management Group, LLC | History | No change | 358 | 1 | 0.0% | 0.0% | 86 | 0 | 0.0% | Q4 2025 | Jan 23, 2026 |
| Empowered Funds, LLC | History | Closed out | 0 | 0 | — | 0.01% | — | -219,834 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Clayton Partners LLC | History | Closed out | 0 | 0 | — | 0.44% | — | -179,891 | -100.0% | Q3 2025 | Nov 10, 2025 |
| GSA CAPITAL PARTNERS LLP | History | Closed out | 0 | 0 | — | 0.02% | — | -64,433 | -100.0% | Q3 2025 | Nov 07, 2025 |
| Verition Fund Management LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -19,964 | -100.0% | Q3 2025 | Nov 14, 2025 |
| XTX Topco Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -19,590 | -100.0% | Q3 2025 | Nov 14, 2025 |
| FLAGSHIP HARBOR ADVISORS, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -10,000 | -100.0% | Q3 2025 | Nov 05, 2025 |
| Arax Advisory Partners | History | Closed out | 0 | 0 | — | 0.0% | — | -1,467 | -100.0% | Q3 2025 | Nov 14, 2025 |
| EverSource Wealth Advisors, LLC | History | Added to | 184 | 0 | — | — | — | +22 | 13.58% | Q4 2025 | Feb 06, 2026 |
| IFP Advisors, Inc | History | Reduced | 33 | 0 | — | — | — | -9 | -21.43% | Q4 2025 | Feb 06, 2026 |
| True Wealth Design, LLC | History | New | 2 | 0 | — | — | — | +2 | New | Q4 2025 | Jan 08, 2026 |
| ROTHSCHILD INVESTMENT LLC | History | No change | 110 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| Transamerica Financial Advisors, LLC | History | No change | 20 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| SBI Securities Co., Ltd. | History | No change | 250 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 03, 2026 |