Who owns ACACIA RESEARCH CORP?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from SEC filings.
Institutional ownership of ACTG from SEC Form 13F filings across 89 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, 89 institutions disclosed 73.9M shares of ACACIA RESEARCH CORP worth $342.8M — about 76.3% of shares outstanding; the largest disclosed holder is Starboard Value LP. Source: SEC Form 13F filings, parsed by EvidInvest.
89
13F holders
$342.8M
value, 2026 filers
76.3%
of shares outstanding (73.9M sh)
15
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 | BlackRock, Inc. | 2.6M | $12.1M | 0.0% | 2.7% | +7.9% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $6.9M | 0.0% | 1.5% | -53.5% |
| 4 | GOLDMAN SACHS GROUP INC | 1.2M | $5.5M | 0.0% | 1.2% | +101.2% |
| 5 | Krilogy Financial LLC | 1.1M | $5.3M | 0.2% | 1.2% | 0.0% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 900,809 | $4.2M | 0.0% | 0.9% | +5.0% |
| 7 | AMERICAN CENTURY COMPANIES INC | 693,309 | $3.2M | 0.0% | 0.7% | +35.6% |
| 8 | Tidal Investments LLC | 424,173 | $2.0M | 0.0% | 0.4% | -3.0% |
| 9 | NORTHERN TRUST CORP | 289,835 | $1.4M | 0.0% | 0.3% | +7.5% |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | 289,396 | $1.3M | 0.0% | 0.3% | +10.5% |
| 11 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 288,462 | $1.3M | 0.0% | 0.3% | +47.0% |
| 12 | ACADIAN ASSET MANAGEMENT LLC | 263,877 | $1,224 | 0.0% | 0.3% | +69.7% |
| 13 | CITADEL ADVISORS LLC | 249,524 | $1.2M | 0.0% | 0.3% | +26.3% |
| 14 | VANGUARD FIDUCIARY TRUST CO | 235,357 | $1.1M | 0.0% | 0.2% | +6.3% |
| 15 | RITHOLTZ WEALTH MANAGEMENT | 228,962 | $1.1M | 0.0% | 0.2% | +252.4% |
| 16 | MORGAN STANLEY | 213,137 | $993,221 | 0.0% | 0.2% | -23.0% |
| 17 | FRANKLIN RESOURCES INC | 190,188 | $886,276 | 0.0% | 0.2% | +2.6% |
| 18 | O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 150,172 | $699,802 | 0.0% | 0.2% | +158.6% |
| 19 | Marquette Asset Management, LLC | 134,467 | $626,617 | 0.1% | 0.1% | -10.0% |
| 20 | UBS Group AG | 126,649 | $590,184 | 0.0% | 0.1% | +9.1% |
| 21 | Sixth Street Partners Management Company, L.P.NEW | 112,016 | $521,995 | 0.1% | 0.1% | new |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 112,016 | $521,995 | 0.0% | 0.1% | +7.0% |
| 23 | Bank of New York Mellon Corp | 111,867 | $521,299 | 0.0% | 0.1% | -0.5% |
| 24 | JANE STREET GROUP, LLC | 111,773 | $520,862 | 0.0% | 0.1% | -36.3% |
| 25 | Quantinno Capital Management LP | 106,140 | $494,612 | 0.0% | 0.1% | +137.9% |
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.