MRCY
Mercury Systems, Inc. · Industrials · Aerospace & Defense
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -30.0% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| 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 | Geode Capital Management ✦ (passive) | 1.27M | -0.3% | $47.04M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.27M | -0.3% | $47.04M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | Two Sigma Investments ✦ | 475.02K | +24.4% | $17.58M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | Marshall Wace ✦ | 416.24K | +247.3% | $15.40M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Marshall Wace ✦ | 416.24K | +247.3% | $15.40M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | Marshall Wace ✦ | 416.24K | +247.3% | $15.40M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 7 | Millennium Management ✦ | 345.61K | New | $12.79M | 0.0% | New | 1 | SEC ↗ |
| 8 | D. E. Shaw & Co. ✦ | 75.44K | -63.4% | $2.79M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | Citadel Advisors ✦ | 64.08K | New | $2.37M | 0.0% | New | 1 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 64.08K | New | $2.37M | 0.0% | New | 1 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 39.52K | +0.6% | $1.46M | 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
| Millennium Management | $12.79M | 0.0% |
| Citadel Advisors | $2.37M | 0.0% |
| Citadel Advisors | $2.37M | 0.0% |
Exited
| Starboard Value | $61.92M | was 1.4% |
| Wellington Management | $1.25M | was 0.0% |
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, Director · 2.74K sh · $248,063
Officer, Director · 105.47K sh · $9.44M
Officer · 356 sh · $32,524
Officer · 1.00K sh · $95,230
Officer, Director · 204 sh · $19,076
Officer, Director · 64.80K sh · $5.99M
Officer · 6.61K sh · $645,817
Officer · 1.03K sh · $100,213
Officer, Director · 22.01K sh · $2.15M
Officer · 109 sh · $10,646
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology