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, Q3 2025
Institutional positions in Mercury Systems Inc as of Sep 30, 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
- 326
- +43 vs. Q2 2025
- Shares held
- 64.9M
- −161.8K (−0.2%) vs. Q2 2025
- Total value
- $5.02B
- +$1.52B (+43.4%) vs. Q2 2025
- New holders
- 69
- 108 more added
- Sold out
- 26
- 109 more reduced
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Mercury Systems Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8,477,158 | $656.1M | 0.01% | +228,189+2.8% | Added |
| JANA Partners Management, LP | 5,959,481 | $461.3M | 22.33% | −793,932−11.8% | Reduced |
| Vanguard Group Inc | 5,731,033 | $443.6M | 0.01% | +221,093+4.0% | Added |
| State Street Corp | 3,055,358 | $236.5M | 0.01% | −191,215−5.9% | Reduced |
| William Blair Investment Management, LLC | 2,487,957 | $192.6M | 0.50% | −2,207,726−47.0% | Reduced |
| Conestoga Capital Advisors, LLC | 2,279,909 | $176.5M | 2.83% | −279,026−10.9% | Reduced |
| Dimensional Fund Advisors LP | 1,743,814 | $135.0M | 0.03% | −87,561−4.8% | Reduced |
| First Trust Advisors LP | 1,532,822 | $118.6M | 0.09% | +751,813+96.3% | Added |
| Invesco Ltd. | 1,527,443 | $118.2M | 0.02% | +943,736+161.7% | Added |
| T. Rowe Price Investment Management, Inc. | 1,521,669 | $117.8M | 0.07% | +552,854+57.1% | Added |
| FMR LLC | 1,483,473 | $114.8M | 0.01% | +314,381+26.9% | Added |
| Geode Capital Management, LLC | 1,321,485 | $102.3M | 0.01% | +56,475+4.5% | Added |
| Bamco Inc | 1,295,284 | $100.3M | 0.27% | +60,483+4.9% | Added |
| Goldman Sachs Group Inc | 1,239,435 | $95.9M | 0.01% | +182,521+17.3% | Added |
| Neuberger Berman Group LLC | 1,046,469 | $80.9M | 0.06% | −9,951−0.9% | Reduced |
| Loomis Sayles & Co L P | 884,615 | $68.5M | 0.08% | −107,995−10.9% | Reduced |
| Morgan Stanley | 876,397 | $67.8M | 0.00% | −51,774−5.6% | Reduced |
| Fisher Asset Management, LLC | 875,279 | $67.7M | 0.02% | +153,946+21.3% | Added |
| Price T Rowe Associates Inc | 866,077 | $67.0M | 0.01% | +822,089+1,868.9% | Added |
| Snyder Capital Management L P | 781,404 | $60.5M | 1.14% | −176,498−18.4% | Reduced |
| Lord, Abbett & Co. LLC | 770,246 | $59.6M | 0.18% | +217,600+39.4% | Added |
| Victory Capital Management Inc | 750,321 | $58.1M | 0.04% | −1,010,980−57.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 693,867 | $56.3M | 0.09% | +514,756+287.4% | Added |
| Van Eck Associates Corp | 720,856 | $55.8M | 0.05% | +12,296+1.7% | Added |
| Segall Bryant & Hamill, LLC | 684,123 | $53.0M | 0.71% | −315,062−31.5% | Reduced |
| Royal Bank of Canada | 680,541 | $52.7M | 0.01% | −85,557−11.2% | Reduced |
| Kennedy Capital Management, Inc. | 657,013 | $50.9M | 1.12% | +126,080+23.7% | Added |
| Charles Schwab Investment Management Inc | 636,598 | $49.3M | 0.01% | −4,352−0.7% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 595,593 | $46.1M | 0.07% | +172,110+40.6% | Added |
| Northern Trust Corp | 549,751 | $42.6M | 0.01% | +2,829+0.5% | Added |
| Jennison Associates LLC | 536,407 | $41.5M | 0.02% | +536,407 | New |
| Emerald Advisers, LLC | 533,092 | $41.3M | 1.32% | +76,379+16.7% | Added |
| Staley Capital Advisers Inc | 411,310 | $31.8M | 1.31% | −58,820−12.5% | Reduced |
| Oberweis Asset Management Inc | 398,500 | $30.8M | 1.18% | 00.0% | Unchanged |
| Silvercrest Asset Management Group LLC | 386,758 | $29.9M | 0.20% | −361−0.1% | Reduced |
| Nuveen, LLC | 360,009 | $27.9M | 0.01% | +176,260+95.9% | Added |
| WCM Investment Management, LLC | 350,407 | $26.4M | 0.05% | −4,277−1.2% | Reduced |
| Emerald Mutual Fund Advisers Trust | 336,058 | $26.0M | 1.34% | +72,840+27.7% | Added |
| SEI Investments Co | 311,561 | $24.1M | 0.03% | +120,962+63.5% | Added |
| Bank of New York Mellon Corp | 311,121 | $24.1M | 0.00% | −1,701−0.5% | Reduced |
| Aristotle Capital Boston, LLC | 307,038 | $23.8M | 1.22% | −8,512−2.7% | Reduced |
| MetLife Investment Management | 306,906 | $23.8M | 0.11% | −86,107−21.9% | Reduced |
| Principal Financial Group Inc | 283,280 | $21.9M | 0.01% | +681+0.2% | Added |
| Ameriprise Financial Inc | 280,388 | $21.7M | 0.00% | −135,421−32.6% | Reduced |
| Bessemer Group Inc | 274,302 | $21.2M | 0.03% | +274,070+118,133.6% | Added |
| Bank of America Corp | 252,487 | $19.5M | 0.00% | −48,053−16.0% | Reduced |
| Axiom Investors LLC | 247,828 | $19.2M | 0.14% | +105,720+74.4% | Added |
| UBS Group AG | 240,349 | $18.6M | 0.00% | +72,017+42.8% | Added |
| Mutual of America Capital Management LLC | 225,374 | $17.4M | 0.18% | +67,518+42.8% | Added |
| Comerica Bank | 221,865 | $17.2M | 0.06% | −21,405−8.8% | Reduced |
| Driehaus Capital Management LLC | 221,012 | $17.1M | 0.12% | +2,666+1.2% | Added |
| Royce & Associates LP | 208,459 | $16.1M | 0.16% | −27,000−11.5% | Reduced |
| Public Sector Pension Investment Board | 205,644 | $15.9M | 0.06% | +32,443+18.7% | Added |
| Raymond James Financial Inc | 192,889 | $14.9M | 0.00% | +26,411+15.9% | Added |
| Penn Capital Management Co Inc | 184,154 | $14.3M | 1.10% | +184,154 | New |
| JPMorgan Chase & Co | 181,773 | $14.1M | 0.00% | +56,800+45.4% | Added |
| Legal & General Group Plc | 165,476 | $12.8M | 0.00% | +1,233+0.8% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 162,786 | $12.6M | 0.04% | +132,785+442.6% | Added |
| Rhumbline Advisers | 156,605 | $12.1M | 0.01% | +859+0.6% | Added |
| Citadel Advisors LLC | 150,574 | $11.7M | 0.01% | −146,403−49.3% | Reduced |
| Macquarie Group Ltd | 148,351 | $11.5M | 0.01% | −9,119−5.8% | Reduced |
| Barclays PLC | 146,871 | $11.4M | 0.00% | −46,597−24.1% | Reduced |
| 13D Management LLC | 137,012 | $10.6M | 10.17% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 130,591 | $10.1M | 0.01% | +114,334+703.3% | Added |
| Prudential Financial Inc | 127,220 | $9.85M | 0.01% | −65,955−34.1% | Reduced |
| Vident Advisory, LLC | 118,506 | $9.17M | 0.09% | +15,755+15.3% | Added |
| UBS Asset Management Americas Inc | 114,728 | $8.88M | 0.00% | −104,279−47.6% | Reduced |
| King Luther Capital Management Corp | 104,245 | $8.07M | 0.03% | −3,198−3.0% | Reduced |
| Select Equity Group, L.P. | 103,848 | $8.04M | 0.03% | +20,078+24.0% | Added |
| Castleark Management LLC | 101,468 | $7.85M | 0.22% | +8,668+9.3% | Added |
| Russell Investments Group, Ltd. | 100,481 | $7.78M | 0.01% | +15,962+18.9% | Added |
| Swiss National Bank | 98,400 | $7.62M | 0.00% | +1,500+1.5% | Added |
| Lisanti Capital Growth, LLC | 97,625 | $7.56M | 1.85% | +3,420+3.6% | Added |
| Blair William & Co | 80,520 | $6.23M | 0.02% | −44,527−35.6% | Reduced |
| Two Sigma Investments, LP | 73,035 | $5.65M | 0.01% | −81,364−52.7% | Reduced |
| State of Wisconsin Investment Board | 64,562 | $5.00M | 0.01% | +3,447+5.6% | Added |
| Wells Fargo & Company | 62,507 | $4.84M | 0.00% | +11,746+23.1% | Added |
| New York State Teachers Retirement System | 59,911 | $4.64M | 0.01% | 00.0% | Unchanged |
| Pier Capital, LLC | 59,567 | $4.61M | 0.72% | +59,567 | New |
| Citigroup Inc | 59,058 | $4.57M | 0.00% | −30,993−34.4% | Reduced |
| Natixis Advisors, L.P. | 58,558 | $4.53M | 0.01% | +1,211+2.1% | Added |
| B. Metzler seel. Sohn & Co. AG | 57,891 | $4.48M | 0.04% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 57,425 | $4.44M | 0.00% | −2,320−3.9% | Reduced |
| EAM Investors, LLC | 58,309 | $4.44M | 0.51% | +58,309 | New |
| Cerity Partners LLC | 55,802 | $4.32M | 0.01% | −1,750−3.0% | Reduced |
| D. E. Shaw & Co., Inc. | 54,109 | $4.19M | 0.00% | −18,815−25.8% | Reduced |
| Calamos Advisors LLC | 54,033 | $4.18M | 0.02% | −921−1.7% | Reduced |
| Rice Hall James & Associates, LLC | 53,340 | $4.13M | 0.23% | −20,859−28.1% | Reduced |
| Quantinno Capital Management LP | 52,731 | $4.08M | 0.01% | +14,238+37.0% | Added |
| LPL Financial LLC | 51,515 | $3.99M | 0.00% | −76,741−59.8% | Reduced |
| Zions Bancorporation, National Association | 50,696 | $3.92M | 0.19% | −7,590−13.0% | Reduced |
| California State Teachers Retirement System | 48,527 | $3.76M | 0.00% | +1,679+3.6% | Added |
| Deutsche Bank AG | 45,098 | $3.49M | 0.00% | +4,794+11.9% | Added |
| Portolan Capital Management, LLC | 44,864 | $3.47M | 0.19% | +44,864 | New |
| Great West Life Assurance Co | 44,041 | $3.31M | 0.00% | +1,595+3.8% | Added |
| Tudor Investment Corp Et Al | 39,923 | $3.09M | 0.02% | −51,511−56.3% | Reduced |
| Ironwood Investment Management LLC | 39,448 | $3.05M | 1.33% | −222−0.6% | Reduced |
| Thrivent Financial for Lutherans | 38,038 | $2.94M | 0.01% | +690+1.8% | Added |
| Sterling Capital Management LLC | 34,661 | $2.68M | 0.04% | +10,661+44.4% | Added |
| Great Lakes Advisors, LLC | 34,617 | $2.68M | 0.02% | −34,868−50.2% | Reduced |