ACACIA RESEARCH CORP (ACTG) Top Institutional Shareholders
ACACIA RESEARCH CORP (ACTG) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $406.03M in ACTG holdings during the latest filing period.
Starboard Value Lp is currently the largest disclosed institutional shareholder of ACTG tracked by InsiderSet, reporting ownership valued at approximately $294.00M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $287.89M, representing an estimated loss of -2.08% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 91% of the total disclosed ACTG value among the investors covered in this analysis. Major shareholders include Starboard Value Lp, State Street Corp, Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in ACACIA RESEARCH CORP (ACTG).
This page ranks the largest institutional ACTG shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
114
Total Reported Value
$406.03M
Largest Holder
Starboard Value Lp
Largest Position
$294.00M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
124
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Starboard Value Lp | 6.44% | 61,123,595 | $294,004,492 | $287,892,132 | -$6,112,360 | -2.08% | |
| State Street Corp | 0.00% | 3,105,041 | $14,935,247 | $14,624,743 | -$310,504 | -2.08% | |
| Dimensional Fund Advisors Lp | 0.00% | 2,853,889 | $13,727,634 | $13,441,817 | -$285,817 | -2.08% | |
| Blackrock, Inc. | 0.00% | 2,406,367 | $11,574,626 | $11,333,989 | -$240,637 | -2.08% | |
| Vanguard Capital Management Llc | 0.00% | 1,596,121 | $7,677,342 | $7,517,730 | -$159,612 | -2.08% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 1,407,584 | $6,770,479 | $6,629,721 | -$140,758 | -2.08% |
| Krilogy Financial Llc | 0.18% | 1,127,487 | $5,626,160 | $5,310,464 | -$315,696 | -5.61% | |
| Peapod Lane Capital Llc | 4.31% | 1,091,336 | $5,259,557 | $5,140,193 | -$119,364 | -2.27% | |
| Geode Capital Management, Llc | 0.00% | 857,719 | $4,126,517 | $4,039,856 | -$86,661 | -2.10% | |
| Pacific Ridge Capital Partners, Llc | 0.85% | 817,242 | $3,930,934 | $3,849,210 | -$81,724 | -2.08% | |
| Formidable Asset Management, Llc | 0.58% | 838,869 | $3,726,649 | $3,951,073 | +$224,424 | +6.02% | |
| Bridgeway Capital Management, Llc | 0.06% | 603,510 | $2,902,883 | $2,842,532 | -$60,351 | -2.08% | |
| Goldman Sachs Group Inc | 0.00% | 584,102 | $2,809,531 | $2,751,120 | -$58,411 | -2.08% | |
| American Century Companies Inc | 0.00% | 511,374 | $2,459,709 | $2,408,572 | -$51,137 | -2.08% | |
| Aegis Financial Corp | 0.41% | 491,086 | $2,362,124 | $2,313,015 | -$49,109 | -2.08% | |
| Tidal Investments Llc | 0.01% | 437,428 | $2,104,029 | $2,060,286 | -$43,743 | -2.08% | |
| Empowered Funds, Llc | 0.01% | 340,210 | $1,636,410 | $1,602,389 | -$34,021 | -2.08% | |
| Morgan Stanley | 0.00% | 276,902 | $1,331,901 | $1,304,208 | -$27,693 | -2.08% | |
| Northern Trust Corp | 0.00% | 269,647 | $1,297,003 | $1,270,037 | -$26,966 | -2.08% | |
| Vanguard Portfolio Management Llc | 0.00% | 261,909 | $1,259,782 | $1,233,591 | -$26,191 | -2.08% | |
| Vanguard Fiduciary Trust Co | 0.00% | 221,379 | $1,064,833 | $1,042,695 | -$22,138 | -2.08% | |
| Citadel Advisors Llc | 0.00% | 197,571 | $950,317 | $930,559 | -$19,758 | -2.08% | |
| Susquehanna International Group, Llp | 0.00% | 196,296 | $944,184 | $924,554 | -$19,630 | -2.08% | |
| Franklin Resources Inc | 0.00% | 185,288 | $891,235 | $872,706 | -$18,529 | -2.08% | |
| Jane Street Group, Llc | 0.00% | 175,411 | $843,727 | $826,186 | -$17,541 | -2.08% | |
| Corsair Capital Management, L.P. | 0.12% | 166,672 | $801,692 | $785,025 | -$16,667 | -2.08% | |
| Marquette Asset Management, Llc | 0.11% | 149,408 | $718,653 | $703,712 | -$14,941 | -2.08% | |
| Marshall Wace, Llp | 0.00% | 116,289 | $559,351 | $547,721 | -$11,630 | -2.08% | |
| Ubs Group Ag | 0.00% | 116,072 | $558,307 | $546,699 | -$11,608 | -2.08% | |
| Bank Of New York Mellon Corp | 0.00% | 112,430 | $540,787 | $529,545 | -$11,242 | -2.08% | |
| Charles Schwab Investment Management Inc | 0.00% | 104,719 | $503,698 | $493,226 | -$10,472 | -2.08% | |
| Capital Wealth Alliance, Llc | 0.23% | 103,970 | $500,096 | $489,699 | -$10,397 | -2.08% | |
| Point72 Asset Management, L.P. | 0.00% | 88,552 | $425,935 | $417,080 | -$8,855 | -2.08% | |
| Aqr Capital Management Llc | 0.00% | 81,708 | $393,015 | $384,845 | -$8,170 | -2.08% | |
| Invesco Ltd. | 0.00% | 76,583 | $368,365 | $360,706 | -$7,659 | -2.08% | |
| Fmr Llc | 0.00% | 75,760 | $364,406 | $356,830 | -$7,576 | -2.08% | |
| Gatepass Capital, Llc | 0.18% | 75,500 | $363,155 | $355,605 | -$7,550 | -2.08% | |
| Eversource Wealth Advisors, Llc | 0.01% | 7,020 | $341,923 | $33,064 | -$308,859 | -90.33% | |
| Ritholtz Wealth Management | 0.01% | 64,978 | $312,544 | $306,046 | -$6,498 | -2.08% | |
| O'Shaughnessy Asset Management, Llc | 0.00% | 58,060 | $279,269 | $273,463 | -$5,806 | -2.08% | |
| Cornerstone Investment Partners, Llc | 0.01% | 55,124 | $265,146 | $259,634 | -$5,512 | -2.08% | |
| Nuveen, Llc | 0.00% | 48,219 | $231,933 | $227,111 | -$4,822 | -2.08% | |
| Quantinno Capital Management Lp | 0.00% | 44,618 | $214,613 | $210,151 | -$4,462 | -2.08% | |
| Rhumbline Advisers | 0.00% | 44,341 | $213,273 | $208,846 | -$4,427 | -2.08% | |
| Millennium Management Llc | 0.00% | 40,043 | $192,607 | $188,603 | -$4,004 | -2.08% | |
| Occudo Quantitative Strategies Lp | 0.01% | 34,930 | $177,444 | $164,520 | -$12,924 | -7.28% | |
| Lpl Financial Llc | 0.00% | 35,000 | $168,350 | $164,850 | -$3,500 | -2.08% | |
| Bank Of America Corp | 0.00% | 33,319 | $160,265 | $156,932 | -$3,333 | -2.08% | |
| Simplex Trading, Llc | 0.00% | 31,955 | $153,703 | $150,508 | -$3,195 | -2.08% | |
| Permanent Capital Management, Lp | 0.02% | 30,000 | $152,400 | $141,300 | -$11,100 | -7.28% |
Frequently asked questions about ACTG
Who owns the most ACTG stock?
The largest holders of ACTG are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ACACIA RESEARCH CORP (ACTG).
Is ACTG widely held by superinvestors?
Many widely followed stocks like ACTG appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ACTG is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.