MRCY
Mercury Systems, Inc. · Industrials · Aerospace & Defense
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -1.2% · net new positions 0.0% · formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 1 | 0 | 10.39K | $551,779 | n/a | n/a |
| Q2 2026 | 109 | 0 | 43.26M | $5.28B | +9 | −9 |
| Q1 2026 | 112 | +6 | 43.16M | $3.14B | +15 | −9 |
| Q4 2025 | 105 | +1 | 43.71M | $3.19B | +2 | −1 |
| Q3 2025 | 16 | -1 | 24.64M | $1.91B | n/a | −1 |
| Q2 2025 | 14 | 0 | 21.38M | $1.15B | n/a | n/a |
| Q1 2025 | 11 | +1 | 6.72M | $289.56M | +1 | n/a |
| Q4 2024 | 10 | +2 | 6.46M | $271.35M | +2 | n/a |
| Q3 2024 | 7 | 0 | 2.69M | $99.43M | +2 | −2 |
| Q2 2024 | 7 | n/a | 4.36M | $117.73M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 8.25M | n/a | $444.29M | 0.0% | n/c | 1 | SEC ↗ ×16 |
| 2 | The Vanguard Group ✦ (passive) | 5.51M | n/a | $296.77M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | State Street Global Advisors ✦ (passive) | 3.25M | +8.7% | $174.86M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.27M | 0.0% | $68.14M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 5 | Fidelity (FMR) ✦ | 1.17M | n/a | $62.97M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 6 | Fisher Asset Management ✦ | 721.33K | +0.1% | $38.85M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | Millennium Management ✦ | 508.42K | -25.7% | $27.38M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | Citadel Advisors ✦ | 296.98K | +56.8% | $16.00M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | Two Sigma Investments ✦ | 154.40K | -3.1% | $8.32M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 10 | D. E. Shaw & Co. ✦ | 72.92K | -20.3% | $3.93M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 11 | Marshall Wace ✦ | 67.92K | -87.3% | $3.66M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 12 | T. Rowe Price ✦ | 43.99K | +7.4% | $2.37M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | Gotham Asset Management ✦ | 42.77K | +52.6% | $2.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 32.91K | +81.4% | $1.76M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 353 holders, 63.99M shares, $4.30B 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)
Officer · 1.00K sh · $86,520
Officer · 4.00K sh · $338,030
Officer, Director · 38.28K sh · $3.40M
Officer, Director · 10.81K sh · $970,492
Officer, Director · 107.63K sh · $9.37M
Officer, Director · 3.45K sh · $303,400
Officer, Director · 105.47K sh · $9.44M
Officer, Director · 2.74K sh · $248,063
Officer, Director · 204 sh · $19,076
Officer · 356 sh · $32,524
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology