MRCY Institutional Ownership
Top institutional (13F) holders of MRCY and 5%+ (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
43
Institutional value
$5.02B
Top holder
BlackRock, Inc.
Known activist holders
1
Top holders
| Holder | Stake | Filed | Value |
|---|---|---|---|
| BlackRock, Inc.holding company | 15.6% | Aug 7, 2026 | $1.15B |
| JANA PARTNERS MANAGEMENT, LPACTIVISTinvestment advisor | 6.6% | Aug 15, 2026 | $484.29M |
| STATE STREET CORPORATIONholding company | 5.7% | Sep 22, 2026 | $418.05M |
| Vanguard Portfolio Managementinvestment advisor | 5.0% | Aug 13, 2026 | $370.84M |
| Invesco Ltd.holding company | 4.4% | Aug 14, 2026 | $326.55M |
| Vanguard Capital Managementinvestment advisor | 4.0% | Aug 13, 2026 | $296.36M |
| FMR LLCinvestment advisor | 3.1% | Aug 13, 2026 | $225.34M |
| GOLDMAN SACHS GROUP INCinvestment advisor | 2.6% | Aug 14, 2026 | $192.76M |
| T. Rowe Price Associates, Inc.investment advisor | 2.1% | Aug 14, 2026 | $157.26M |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | 2.4% | Nov 6, 2026 | $120.34M |
| FRANKLIN RESOURCES INCinvestment advisor | 1.4% | Aug 13, 2026 | $103.58M |
| Neuberger Berman Group LLCinvestment advisor | 1.4% | Oct 27, 2026 | $102.07M |
| MORGAN STANLEYholding company | 1.3% | Aug 13, 2026 | $99.28M |
| Dimensional Fund Advisors LPinvestment advisor | 2.0% | Nov 4, 2026 | $97.49M |
| WELLINGTON MANAGEMENT GROUP LLPinvestment advisor | 1.3% | Aug 14, 2026 | $94.87M |
| Loomis, Sayles & Co., L.P.investment advisor | 1.1% | Aug 14, 2026 | $83.32M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | 1.0% | Aug 14, 2026 | $76.77M |
| NORTHERN TRUST CORPinvestment advisor | 1.0% | Aug 13, 2026 | $73.12M |
| Fisher Asset Management, LLCinvestment advisor | 1.5% | Nov 6, 2026 | $72.61M |
| Ameriprise Financial, Inc.holding company | 0.8% | Aug 14, 2026 | $61.07M |
| ROYAL BANK OF CANADAholding company | 0.7% | Aug 14, 2026 | $48.21M |
| Artisan Partners Limited Partnershipinvestment advisor | 0.6% | Aug 13, 2026 | $45.61M |
| JENNISON ASSOCIATES LLCinvestment advisor | 0.6% | Aug 3, 2026 | $43.41M |
| UBS Group AGbank | 0.5% | Aug 13, 2026 | $33.62M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCinvestment advisor | 0.6% | Nov 6, 2026 | $31.15M |
5%+ holders
Current stakes of 5% or more from Schedule 13D and 13G filings. A joint filing shows once, under its lead filer.
| Holder | Form | Stake | Filed |
|---|---|---|---|
| BlackRock, Inc.holding company | SC 13G/A | 14.4% | Jul 29, 2026 |
| JANA PARTNERS MANAGEMENT, LPACTIVISTinvestment advisor | SC 13D/A | 6.9% | Mar 5, 2026 |
| STATE STREET CORPORATIONholding company | SC 13G | 6.4% | May 12, 2026 |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.