ACTG
Acacia Research Corporation · Industrials · Specialty Business Services
Momentum inputs (comparable managers):
holder breadth +10.0% ·
share flow +0.9% ·
net new positions +9.1%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 56 | +1 | 78.83M | $367.33M | +6 | −5 |
| Q1 2026 | 57 | +8 | 77.67M | $373.53M | +10 | −2 |
| Q4 2025 | 49 | 0 | 77.35M | $289.30M | — | — |
| Q3 2025 | 14 | 0 | 72.41M | $235.34M | — | — |
| Q2 2025 | 11 | +1 | 71.90M | $257.40M | +1 | — |
| Q1 2025 | 7 | 0 | 66.56M | $212.99M | +1 | −1 |
| Q4 2024 | 7 | 0 | 66.68M | $289.38M | — | — |
| Q3 2024 | 6 | -2 | 63.77M | $297.19M | — | −2 |
| Q2 2024 | 8 | — | 63.80M | $319.66M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Starboard Value ✦ | 61.12M | 0.0% | $218.82M | 3.8% | Held | 5 | SEC ↗ |
| 2 | State Street Global Advisors ✦ (passive) | 2.82M | +0.4% | $10.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 2.37M | — | $8.48M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 2.37M | — | $8.48M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 2.37M | — | $8.48M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 2.37M | — | $8.48M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 2.37M | — | $8.48M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 2.37M | — | $8.48M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | The Vanguard Group ✦ (passive) | 2.30M | — | $8.22M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | The Vanguard Group ✦ (passive) | 2.30M | — | $8.22M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | The Vanguard Group ✦ (passive) | 2.30M | — | $8.22M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Renaissance Technologies ✦ | 1.56M | -1.2% | $5.58M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 13 | Geode Capital Management ✦ (passive) | 858.62K | -2.4% | $3.07M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 14 | Geode Capital Management ✦ (passive) | 858.62K | -2.4% | $3.07M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 15 | Citadel Advisors ✦ | 594.10K | +456.2% | $2.13M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 16 | Citadel Advisors ✦ | 594.10K | +456.2% | $2.13M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | Marshall Wace ✦ | 171.41K | New | $613,656 | 0.0% | New | 1 | SEC ↗ |
| 18 | Marshall Wace ✦ | 171.41K | New | $613,656 | 0.0% | New | 1 | SEC ↗ |
| 19 | Fidelity (FMR) ✦ | 64.93K | — | $232,460 | 0.0% | n/c | 1 | SEC ↗ |
| 20 | AQR Capital Management ✦ | 25.81K | +137.1% | $92,411 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 21 | AQR Capital Management ✦ | 25.81K | +137.1% | $92,411 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 22 | AQR Capital Management ✦ | 25.81K | +137.1% | $92,411 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 23 | AQR Capital Management ✦ | 25.81K | +137.1% | $92,411 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | AQR Capital Management ✦ | 25.81K | +137.1% | $92,411 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | T. Rowe Price ✦ | 18.74K | -65.5% | $68,000 | 0.0% | ▼ Trim | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $613,656 | 0.0% |
| Marshall Wace | $613,656 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 115 holders, 84.56M shares, $405.99M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Director · 10.00K sh · $46,000
Director · 32.19K sh · $150,318
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology