Mercury Systems (MRCY)
Builds secure processing electronics and integrated subsystems for aerospace and defense missions.
$83.88
After hours0.00 (0.00%)
At close$83.88(−2.07%)
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13F · 13D/G · Form 4
| Institutions | 110.16% | 66.24M shares | |
|---|---|---|---|
| 408 holders · as of Jun 30, 2026 | |||
| Insiders | 1.47% | 885.0K shares | |
| 14 holders · as of Sep 15, 2026 | |||
| Strategic holders | 7.83% | 4.71M shares | |
| 1 holder · as of Aug 22, 2023 | |||
| Adds to | 119.46% | ||
60.14M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
These groups come from separate filings that can overlap, so they add to 119.46%; nothing is left for Other.
13F, as of Jun 30, 2026
408 holders · 66.24M shares · 87 new positions · 219 increased · 131 reduced · 48 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 9.37M | 15.58% | +450.6K | Aug 7, 2026 |
| Jana Partners Management, LP | 3.96M | 6.58% | −148.6K | Aug 14, 2026 |
| State Street Corp | 3.42M | 5.68% | −447.4K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 3.03M | 5.04% | +120.6K | Aug 13, 2026 |
| Invesco Ltd. | 2.67M | 4.44% | +227.9K | Aug 14, 2026 |
| Vanguard Capital Management LLC | 2.42M | 4.03% | +18.8K | Aug 13, 2026 |
| FMR LLC | 1.84M | 3.06% | +938.4K | Aug 13, 2026 |
| T. Rowe Price Investment Management, Inc. | 1.60M | 2.65% | +15.9K | Aug 14, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 13.30% | 7.97M | 13G | Jul 17, 2025 |
| JANA Partners Management, LP | 6.90% | 4.11M | 13D | Mar 4, 2026 |
| State Street Corporation | 6.40% | 3.87M | 13G | May 12, 2026 |
| Vanguard Portfolio Management | 5.13% | 3.09M | 13G | Jul 31, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Sep 3, 2026 | Steven Ratnerofficer: EVP, CHRO | Sale | 4,000 | $84.51 | 19,275 |
| Aug 26, 2026 | William L. Ballhausdirector, officer: Chairman, President & CEO | Sale · 2 lots | 49,090 | $89.10 | 361,822 |
| Aug 25, 2026 | William L. Ballhausdirector, officer: Chairman, President & CEO | Sale · 2 lots | 111,076 | $87.12 | 342,436 |
| Aug 21, 2026 | Steven Ratnerofficer: EVP, CHRO | Sale | 356 | $91.36 | 0 |
| Aug 24, 2026 | William L. Ballhausdirector, officer: Chairman, President & CEO | Sale · 2 lots | 108,209 | $89.50 | 299,836 |
| Aug 21, 2026 | William L. Ballhausdirector, officer: Chairman, President & CEO | Sale · 2 lots | 65,000 | $92.41 | 256,047 |
| Aug 21, 2026 | Stuart Kupinskyofficer: EVP, CLO & Corp Sec | Sale | 1,000 | $95.23 | 56,352 |
| Aug 20, 2026 | Douglas Munroofficer: SVP, CAO | Sale | 109 | $97.67 | 12,982 |
| Aug 19, 2026 | Douglas Munroofficer: SVP, CAO | Sale | 548 | $100.31 | 13,091 |
| Aug 20, 2026 | William L. Ballhausdirector, officer: Chairman, President & CEO | Sale | 22,010 | $97.67 | 228,197 |
House and Senate disclosures
Not reported.