ACACIA RESEARCH CORP ACTG
CIK 0000934549 · CUSIP 003881307
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | Starboard Value LP CIK 1517137 · View history | $294.00M 61,123,595 shares | 6.44% | 0(0.0%)Unchanged | SEC filing ↗ May 15, 2026 | ▾ |
| 02 | STATE STREET CORP CIK 93751 · View history | $14.94M 3,105,041 shares | 0.00% | -40.94K(-1.3%)Reduced | SEC filing ↗ May 15, 2026 | ▾ |
| 03 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $13.73M 2,853,889 shares | 0.00% | +95.09K(+3.4%)Added | SEC filing ↗ May 7, 2026 | ▾ |
| 04 | BlackRock, Inc. CIK 2012383 · View history | $11.57M 2,406,367 shares | 0.00% | +42.52K(+1.8%)Added | SEC filing ↗ May 13, 2026 | ▾ |
| 05 | VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history | $7.68M 1,596,121 shares | 0.00% | — | SEC filing ↗ May 15, 2026 | ▾ |
| 06 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $6.77M 1,407,584 shares | 0.01% | +12.28K(+0.9%)Added | SEC filing ↗ May 14, 2026 | ▾ |
| 07 | Krilogy Financial LLC CIK 1659047 · View history | $5.63M 1,127,487 shares | 0.18% | -115.93K(-9.3%)Reduced | SEC filing ↗ Apr 17, 2026 | ▾ |
| 08 | Peapod Lane Capital LLC CIK 2050979 · View history | $5.26M 1,091,336 shares | 4.31% | +245.38K(+29.0%)Added | SEC filing ↗ May 4, 2026 | ▾ |
| 09 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $4.13M 857,719 shares | 0.00% | +11.41K(+1.3%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 10 | Pacific Ridge Capital Partners, LLC CIK 1591546 · View history | $3.93M 817,242 shares | 0.85% | +6.92K(+0.9%)Added | SEC filing ↗ May 11, 2026 | ▾ |
| 11 | Formidable Asset Management, LLC CIK 1592613 · View history | $3.73M 838,869 shares | 0.58% | -31.96K(-3.7%)Reduced | SEC filing ↗ Apr 22, 2026 | ▾ |
| 12 | BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history | $2.90M 603,510 shares | 0.06% | +161.62K(+36.6%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 13 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $2.81M 584,102 shares | 0.00% | +275.11K(+89.0%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 14 | AMERICAN CENTURY COMPANIES INC CIK 748054 · View history | $2.46M 511,374 shares | 0.00% | +18.34K(+3.7%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 15 | AEGIS FINANCIAL CORP CIK 1140753 · View history | $2.36M 491,086 shares | 0.41% | +491.09KNew | SEC filing ↗ May 13, 2026 | ▾ |
| 16 | Tidal Investments LLC CIK 1600064 · View history | $2.10M 437,428 shares | 0.01% | 0(0.0%)Unchanged | SEC filing ↗ May 15, 2026 | ▾ |
| 17 | Empowered Funds, LLC CIK 1592828 · Amended · View history | $1.64M 340,210 shares | 0.01% | +340.21KNew | SEC filing ↗ Jun 16, 2026 | ▾ |
| 18 | MORGAN STANLEY CIK 895421 · View history | $1.33M 276,902 shares | 0.00% | -166.36K(-37.5%)Reduced | SEC filing ↗ May 15, 2026 | ▾ |
| 19 | NORTHERN TRUST CORP CIK 73124 · View history | $1.30M 269,647 shares | 0.00% | +26.71K(+11.0%)Added | SEC filing ↗ May 14, 2026 | ▾ |
| 20 | VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history | $1.26M 261,909 shares | 0.00% | — | SEC filing ↗ May 8, 2026 | ▾ |
Showing 20 / 118 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 118 reporting institutions.
This page includes 20 of 118 reporting institutions. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 118 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"003881307","quarter":"2026Q1","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.