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 |
|---|---|---|---|---|---|---|
| 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 | — | −1 |
| Q2 2025 | 14 | 0 | 21.38M | $1.15B | — | — |
| Q1 2025 | 11 | +1 | 6.72M | $289.56M | +1 | — |
| Q4 2024 | 10 | +2 | 6.46M | $271.35M | +2 | — |
| Q3 2024 | 7 | 0 | 2.69M | $99.43M | +2 | −2 |
| Q2 2024 | 7 | — | 4.36M | $117.73M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 8.25M | — | $444.29M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 5.51M | — | $296.77M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 5.51M | — | $296.77M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 5.51M | — | $296.77M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | The Vanguard Group ✦ (passive) | 5.51M | — | $296.77M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | The Vanguard Group ✦ (passive) | 5.51M | — | $296.77M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | State Street Global Advisors ✦ (passive) | 3.25M | +8.7% | $174.86M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 23 | Geode Capital Management ✦ (passive) | 1.27M | 0.0% | $68.14M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | Geode Capital Management ✦ (passive) | 1.27M | 0.0% | $68.14M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 25 | Fidelity (FMR) ✦ | 1.17M | — | $62.97M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Fidelity (FMR) ✦ | 1.17M | — | $62.97M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 1.17M | — | $62.97M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Fisher Asset Management ✦ | 721.33K | +0.1% | $38.85M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 29 | Millennium Management ✦ | 508.42K | -25.7% | $27.38M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 30 | Citadel Advisors ✦ | 296.98K | +56.8% | $16.00M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 31 | Two Sigma Investments ✦ | 154.40K | -3.1% | $8.32M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 32 | D. E. Shaw & Co. ✦ | 72.92K | -20.3% | $3.93M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 33 | D. E. Shaw & Co. ✦ | 72.92K | -20.3% | $3.93M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 34 | Marshall Wace ✦ | 67.92K | -87.3% | $3.66M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 35 | T. Rowe Price ✦ | 43.99K | +7.4% | $2.37M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 36 | Gotham Asset Management ✦ | 42.77K | +52.6% | $2.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 37 | AQR Capital Management ✦ | 32.91K | +81.4% | $1.76M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | AQR Capital Management ✦ | 32.91K | +81.4% | $1.76M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | AQR Capital Management ✦ | 32.91K | +81.4% | $1.76M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 40 | AQR Capital Management ✦ | 32.91K | +81.4% | $1.76M | 0.0% | ▲ Add | 2 | SEC ↗ |
“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 · 6.61K sh · $645,817
Officer · 1.03K sh · $100,213
Officer, Director · 22.01K sh · $2.15M
Officer · 109 sh · $10,646
Officer · 548 sh · $54,968
Officer · 1.31K sh · $131,200
Officer · 8.15K sh · $817,995
Officer, Director · 26.80K sh · $2.69M
Officer · 2.19K sh · $219,369
Officer, Director · 24.14K sh · $2.69M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology