Mercury Systems Inc
MRCY- Exchange
- Nasdaq
- Industry
- Electronic Components & Accessories
- SEC CIK
- 0001049521
In the last 90 days, Mercury Systems Inc insiders filed 0 open-market purchases and 16 sales; 392 institutions reported holding it in 13F filings for Q2 2026, worth $8.01B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Mercury Systems Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 347
- +24 vs. Q3 2025
- Shares held
- 64.6M
- −244.2K (−0.4%) vs. Q3 2025
- Total value
- $4.72B
- −$300.3M (−6.0%) vs. Q3 2025
- New holders
- 55
- 127 more added
- Sold out
- 31
- 113 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MRCY on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 392 | $8.01B |
| Q1 2026 | 357 | $4.75B |
| Q4 2025 | 347 | $4.72B |
| Q3 2025 | 326 | $5.02B |
| Q2 2025 | 285 | $3.50B |
| Q1 2025 | 253 | $2.72B |
| Q4 2024 | 243 | $2.66B |
| Q3 2024 | 245 | $2.33B |
| Q2 2024 | 232 | $1.75B |
| Q1 2024 | 222 | $1.84B |
| Q4 2023 | 219 | $2.23B |
| Q3 2023 | 217 | $2.22B |
| Q2 2023 | 236 | $1.95B |
| Q1 2023 | 245 | $2.94B |
| Q4 2022 | 236 | $2.61B |
| Q3 2022 | 235 | $2.33B |
| Q2 2022 | 254 | $3.65B |
| Q1 2022 | 253 | $3.77B |
| Q4 2021 | 252 | $3.14B |
| Q3 2021 | 251 | $2.51B |
| Q2 2021 | 255 | $3.48B |
| Q1 2021 | 282 | $3.75B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Mercury Systems Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8,611,638 | $628.7M | 0.01% | +134,480+1.6% | Added |
| Vanguard Group Inc | 5,632,049 | $411.2M | 0.01% | −98,984−1.7% | Reduced |
| JANA Partners Management, LP | 4,959,481 | $362.1M | 18.84% | −1,000,000−16.8% | Reduced |
| State Street Corp | 3,423,600 | $250.0M | 0.01% | +368,242+12.1% | Added |
| Conestoga Capital Advisors, LLC | 2,174,807 | $158.8M | 2.67% | −105,102−4.6% | Reduced |
| Invesco Ltd. | 1,910,742 | $139.5M | 0.01% | +383,299+25.1% | Added |
| T. Rowe Price Investment Management, Inc. | 1,542,851 | $112.6M | 0.07% | +21,182+1.4% | Added |
| Dimensional Fund Advisors LP | 1,475,821 | $107.8M | 0.02% | −267,993−15.4% | Reduced |
| Geode Capital Management, LLC | 1,368,659 | $99.9M | 0.01% | +47,174+3.6% | Added |
| Ameriprise Financial Inc | 1,289,685 | $94.2M | 0.02% | +1,009,297+360.0% | Added |
| First Trust Advisors LP | 1,279,384 | $93.4M | 0.07% | −253,438−16.5% | Reduced |
| Goldman Sachs Group Inc | 1,156,397 | $84.4M | 0.01% | −83,038−6.7% | Reduced |
| FMR LLC | 1,152,192 | $84.1M | 0.00% | −331,281−22.3% | Reduced |
| Neuberger Berman Group LLC | 1,030,103 | $75.2M | 0.06% | −16,366−1.6% | Reduced |
| William Blair Investment Management, LLC | 984,273 | $71.9M | 0.20% | −1,503,684−60.4% | Reduced |
| Price T Rowe Associates Inc | 867,670 | $63.3M | 0.01% | +1,593+0.2% | Added |
| Fisher Asset Management, LLC | 860,383 | $62.8M | 0.02% | −14,896−1.7% | Reduced |
| Loomis Sayles & Co L P | 851,817 | $62.2M | 0.07% | −32,798−3.7% | Reduced |
| Bamco Inc | 835,823 | $61.0M | 0.17% | −459,461−35.5% | Reduced |
| Allspring Global Investments Holdings, LLC | 753,695 | $57.3M | 0.09% | +59,828+8.6% | Added |
| Snyder Capital Management L P | 748,536 | $54.7M | 1.02% | −32,868−4.2% | Reduced |
| Morgan Stanley | 730,676 | $53.3M | 0.00% | −145,721−16.6% | Reduced |
| Van Eck Associates Corp | 725,387 | $53.0M | 0.04% | +4,531+0.6% | Added |
| Raymond James Financial Inc | 708,054 | $52.1M | 0.02% | +515,165+267.1% | Added |
| Kennedy Capital Management, Inc. | 670,489 | $49.0M | 1.04% | +13,476+2.1% | Added |
| Royal Bank of Canada | 644,132 | $47.0M | 0.01% | −36,409−5.4% | Reduced |
| Charles Schwab Investment Management Inc | 636,624 | $46.5M | 0.01% | +260.0% | Added |
| Segall Bryant & Hamill, LLC | 636,526 | $46.5M | 0.63% | −47,597−7.0% | Reduced |
| Lord, Abbett & Co. LLC | 615,808 | $45.0M | 0.14% | −154,438−20.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 598,624 | $43.7M | 0.07% | +3,031+0.5% | Added |
| Emerald Advisers, LLC | 531,115 | $38.8M | 1.19% | −1,977−0.4% | Reduced |
| Northern Trust Corp | 517,783 | $37.8M | 0.00% | −31,968−5.8% | Reduced |
| Voya Investment Management LLC | 511,324 | $37.3M | 0.04% | +479,210+1,492.2% | Added |
| Jennison Associates LLC | 449,967 | $32.9M | 0.02% | −86,440−16.1% | Reduced |
| Oberweis Asset Management Inc | 414,040 | $30.2M | 1.11% | +15,540+3.9% | Added |
| Bessemer Group Inc | 399,496 | $29.2M | 0.04% | +125,194+45.6% | Added |
| SEI Investments Co | 378,357 | $27.6M | 0.03% | +66,796+21.4% | Added |
| Nuveen, LLC | 351,130 | $25.6M | 0.01% | −8,879−2.5% | Reduced |
| Emerald Mutual Fund Advisers Trust | 336,058 | $24.5M | 1.20% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 322,300 | $23.5M | 0.00% | +11,179+3.6% | Added |
| Driehaus Capital Management LLC | 304,726 | $22.2M | 0.15% | +83,714+37.9% | Added |
| Silvercrest Asset Management Group LLC | 302,257 | $22.1M | 0.15% | −84,501−21.8% | Reduced |
| Comerica Bank | 292,098 | $21.3M | 0.09% | +70,233+31.7% | Added |
| Aristotle Capital Boston, LLC | 279,317 | $20.4M | 1.12% | −27,721−9.0% | Reduced |
| MetLife Investment Management | 268,362 | $19.6M | 0.09% | −38,544−12.6% | Reduced |
| WCM Investment Management, LLC | 264,889 | $19.6M | 0.04% | −85,518−24.4% | Reduced |
| Principal Financial Group Inc | 262,294 | $19.2M | 0.01% | −20,986−7.4% | Reduced |
| UBS Group AG | 251,229 | $18.3M | 0.00% | +10,880+4.5% | Added |
| Bank of America Corp | 246,737 | $18.0M | 0.00% | −5,750−2.3% | Reduced |
| American Century Companies Inc | 238,932 | $17.4M | 0.01% | +233,013+3,936.7% | Added |
| Victory Capital Management Inc | 227,533 | $16.6M | 0.01% | −522,788−69.7% | Reduced |
| Mutual of America Capital Management LLC | 219,363 | $16.0M | 0.17% | −6,011−2.7% | Reduced |
| Franklin Resources Inc | 208,449 | $15.2M | 0.00% | +184,458+768.9% | Added |
| King Luther Capital Management Corp | 202,643 | $14.8M | 0.06% | +98,398+94.4% | Added |
| Royce & Associates LP | 197,079 | $14.4M | 0.15% | −11,380−5.5% | Reduced |
| Penn Capital Management Co Inc | 191,883 | $14.0M | 1.12% | +7,729+4.2% | Added |
| Man Group plc | 192,033 | $14.0M | 0.03% | +192,033 | New |
| Axiom Investors LLC | 183,144 | $13.4M | 0.12% | −64,684−26.1% | Reduced |
| Public Sector Pension Investment Board | 183,033 | $13.4M | 0.05% | −22,611−11.0% | Reduced |
| Freshford Capital Management, LLC | 182,425 | $13.3M | 5.34% | +182,425 | New |
| Nomura Asset Management International Inc. | 178,681 | $13.0M | 0.02% | +178,681 | New |
| Prudential Financial Inc | 166,138 | $12.1M | 0.01% | +38,918+30.6% | Added |
| BNP Paribas Arbitrage, SA | 164,463 | $12.0M | 0.01% | +145,717+777.3% | Added |
| Staley Capital Advisers Inc | 161,100 | $11.8M | 0.48% | −250,210−60.8% | Reduced |
| Legal & General Group Plc | 160,874 | $11.7M | 0.00% | −4,602−2.8% | Reduced |
| Two Sigma Investments, LP | 150,177 | $11.0M | 0.02% | +77,142+105.6% | Added |
| Barclays PLC | 149,172 | $10.9M | 0.00% | +2,301+1.6% | Added |
| Wells Fargo & Company | 148,989 | $10.9M | 0.00% | +86,482+138.4% | Added |
| Cinctive Capital Management LP | 147,444 | $10.8M | 0.62% | +147,444 | New |
| Heights Point Management, LP | 143,068 | $10.4M | 8.91% | +143,068 | New |
| Rhumbline Advisers | 142,339 | $10.4M | 0.01% | −14,266−9.1% | Reduced |
| Peregrine Capital Management LLC | 142,178 | $10.4M | 0.32% | +140,044+6,562.5% | Added |
| New York State Common Retirement Fund | 139,282 | $10.2M | 0.01% | +8,691+6.7% | Added |
| Deutsche Bank AG | 128,705 | $9.40M | 0.00% | +83,607+185.4% | Added |
| Agman Capital LLC | 122,836 | $8.97M | 7.63% | +122,836 | New |
| Vident Advisory, LLC | 121,888 | $8.90M | 0.08% | +3,382+2.9% | Added |
| Castleark Management LLC | 118,458 | $8.65M | 0.25% | +16,990+16.7% | Added |
| UBS Asset Management Americas Inc | 115,635 | $8.44M | 0.00% | +907+0.8% | Added |
| JPMorgan Chase & Co | 109,132 | $7.97M | 0.00% | −72,641−40.0% | Reduced |
| Swiss National Bank | 106,500 | $7.78M | 0.00% | +8,100+8.2% | Added |
| Citadel Advisors LLC | 104,376 | $7.62M | 0.01% | −46,198−30.7% | Reduced |
| 13D Management LLC | 103,762 | $7.58M | 9.01% | −33,250−24.3% | Reduced |
| Lisanti Capital Growth, LLC | 94,265 | $6.88M | 1.63% | −3,360−3.4% | Reduced |
| Russell Investments Group, Ltd. | 89,794 | $6.56M | 0.01% | −10,687−10.6% | Reduced |
| Blair William & Co | 83,772 | $6.12M | 0.02% | +3,252+4.0% | Added |
| Penserra Capital Management LLC | 80,565 | $5.88M | 0.07% | +78,693+4,203.7% | Added |
| Select Equity Group, L.P. | 77,821 | $5.68M | 0.03% | −26,027−25.1% | Reduced |
| Archon Capital Management LLC | 74,600 | $5.45M | 3.10% | +50,000+203.3% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 70,268 | $5.13M | 0.01% | −92,518−56.8% | Reduced |
| Tudor Investment Corp Et Al | 69,178 | $5.05M | 0.03% | +29,255+73.3% | Added |
| Nordea Investment Management AB | 67,386 | $4.95M | 0.00% | +67,386 | New |
| Intech Investment Management LLC | 67,627 | $4.94M | 0.04% | +34,036+101.3% | Added |
| Loup Funds, LLC | 67,461 | $4.93M | 1.43% | +67,461 | New |
| Quantinno Capital Management LP | 66,606 | $4.86M | 0.01% | +13,875+26.3% | Added |
| LPL Financial LLC | 64,423 | $4.70M | 0.00% | +12,908+25.1% | Added |
| Candelo Capital Management LP | 64,226 | $4.69M | 4.28% | +48,926+319.8% | Added |
| Alliancebernstein L.P. | 60,816 | $4.44M | 0.00% | +3,391+5.9% | Added |
| New York State Teachers Retirement System | 59,911 | $4.37M | 0.01% | 00.0% | Unchanged |
| Cerity Partners LLC | 59,556 | $4.35M | 0.01% | +3,754+6.7% | Added |
| D. E. Shaw & Co., Inc. | 58,555 | $4.28M | 0.00% | +4,446+8.2% | Added |