Who owns ACACIA RESEARCH CORP?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ACTG from SEC Form 13F filings across 124 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 124 institutions disclosed 86.0M shares of ACACIA RESEARCH CORP worth $401.5M — about 88.8% of shares outstanding; the largest disclosed holder is Starboard Value LP. Source: SEC Form 13F filings, parsed by EvidInvest.
124
13F holders
$401.5M
value, 2026 filers
88.8%
of shares outstanding (86.0M sh)
18
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ACTG's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Starboard Value LP | 61.1M | $284.8M | 6.3% | 63.1% | 0.0% |
| 2 | STATE STREET CORP | 3.2M | $14.8M | 0.0% | 3.3% | +2.0% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 2.9M | $13.7M | 0.0% | 3% | +3.1% |
| 4 | BlackRock, Inc. | 2.6M | $12.1M | 0.0% | 2.7% | +7.9% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $6.9M | 0.0% | 1.5% | -7.0% |
| 6 | RENAISSANCE TECHNOLOGIES LLC | 1.4M | $6.6M | 0.0% | 1.5% | +0.5% |
| 7 | GOLDMAN SACHS GROUP INC | 1.2M | $5.5M | 0.0% | 1.2% | +101.2% |
| 8 | Krilogy Financial LLC | 1.1M | $5.3M | 0.2% | 1.2% | 0.0% |
| 9 | Peapod Lane Capital LLC | 994,770 | $4.6M | 3.1% | 1% | -8.8% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 900,809 | $4.2M | 0.0% | 0.9% | +5.0% |
| 11 | Pacific Ridge Capital Partners, LLC | 810,962 | $3.8M | 0.7% | 0.8% | -0.8% |
| 12 | Formidable Asset Management, LLC | 793,136 | $3.7M | 0.6% | 0.8% | -5.5% |
| 13 | AMERICAN CENTURY COMPANIES INC | 693,309 | $3.2M | 0.0% | 0.7% | +35.6% |
| 14 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 629,326 | $2.9M | 0.1% | 0.6% | +4.3% |
| 15 | AEGIS FINANCIAL CORP | 491,086 | $2.3M | 0.4% | 0.5% | 0.0% |
| 16 | Tidal Investments LLC | 424,173 | $2.0M | 0.0% | 0.4% | -3.0% |
| 17 | Empowered Funds, LLC | 366,026 | $1.7M | 0.0% | 0.4% | +7.6% |
| 18 | NORTHERN TRUST CORP | 289,835 | $1.4M | 0.0% | 0.3% | +7.5% |
| 19 | VANGUARD PORTFOLIO MANAGEMENT LLC | 289,396 | $1.3M | 0.0% | 0.3% | +10.5% |
| 20 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 288,462 | $1.3M | 0.0% | 0.3% | +47.0% |
| 21 | ACADIAN ASSET MANAGEMENT LLC | 263,877 | $1.2M | 0.0% | 0.3% | +69.7% |
| 22 | CITADEL ADVISORS LLC | 249,524 | $1.2M | 0.0% | 0.3% | +26.3% |
| 23 | AQR CAPITAL MANAGEMENT LLC | 236,392 | $1.1M | 0.0% | 0.2% | +189.3% |
| 24 | VANGUARD FIDUCIARY TRUST CO | 235,357 | $1.1M | 0.0% | 0.2% | +6.3% |
| 25 | MORGAN STANLEY | 213,137 | $993,221 | 0.0% | 0.2% | -23.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.