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; 393 institutions reported holding it in 13F filings for Q2 2026, worth $8.02B 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 | 393 | $8.02B |
| 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 |
|---|---|---|---|---|---|
| Principal Financial Group Inc | 262,294 | $19.2M | 0.01% | −20,986−7.4% | Reduced |
| WCM Investment Management, LLC | 264,889 | $19.6M | 0.04% | −85,518−24.4% | Reduced |
| MetLife Investment Management | 268,362 | $19.6M | 0.09% | −38,544−12.6% | Reduced |
| Aristotle Capital Boston, LLC | 279,317 | $20.4M | 1.12% | −27,721−9.0% | Reduced |
| Comerica Bank | 292,098 | $21.3M | 0.09% | +70,233+31.7% | Added |
| Silvercrest Asset Management Group LLC | 302,257 | $22.1M | 0.15% | −84,501−21.8% | Reduced |
| Driehaus Capital Management LLC | 304,726 | $22.2M | 0.15% | +83,714+37.9% | Added |
| Bank of New York Mellon Corp | 322,300 | $23.5M | 0.00% | +11,179+3.6% | Added |
| Emerald Mutual Fund Advisers Trust | 336,058 | $24.5M | 1.20% | 00.0% | Unchanged |
| Nuveen, LLC | 351,130 | $25.6M | 0.01% | −8,879−2.5% | Reduced |
| SEI Investments Co | 378,357 | $27.6M | 0.03% | +66,796+21.4% | Added |
| Bessemer Group Inc | 399,496 | $29.2M | 0.04% | +125,194+45.6% | Added |
| Oberweis Asset Management Inc | 414,040 | $30.2M | 1.11% | +15,540+3.9% | Added |
| Jennison Associates LLC | 449,967 | $32.9M | 0.02% | −86,440−16.1% | Reduced |
| Voya Investment Management LLC | 511,324 | $37.3M | 0.04% | +479,210+1,492.2% | Added |
| Northern Trust Corp | 517,783 | $37.8M | 0.00% | −31,968−5.8% | Reduced |
| Emerald Advisers, LLC | 531,115 | $38.8M | 1.19% | −1,977−0.4% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 598,624 | $43.7M | 0.07% | +3,031+0.5% | Added |
| Lord, Abbett & Co. LLC | 615,808 | $45.0M | 0.14% | −154,438−20.1% | Reduced |
| Segall Bryant & Hamill, LLC | 636,526 | $46.5M | 0.63% | −47,597−7.0% | Reduced |
| Charles Schwab Investment Management Inc | 636,624 | $46.5M | 0.01% | +260.0% | Added |
| Royal Bank of Canada | 644,132 | $47.0M | 0.01% | −36,409−5.4% | Reduced |
| Kennedy Capital Management, Inc. | 670,489 | $49.0M | 1.04% | +13,476+2.1% | Added |
| Raymond James Financial Inc | 708,054 | $52.1M | 0.02% | +515,165+267.1% | Added |
| Van Eck Associates Corp | 725,387 | $53.0M | 0.04% | +4,531+0.6% | Added |
| Morgan Stanley | 730,676 | $53.3M | 0.00% | −145,721−16.6% | Reduced |
| Snyder Capital Management L P | 748,536 | $54.7M | 1.02% | −32,868−4.2% | Reduced |
| Allspring Global Investments Holdings, LLC | 753,695 | $57.3M | 0.09% | +59,828+8.6% | Added |
| Bamco Inc | 835,823 | $61.0M | 0.17% | −459,461−35.5% | Reduced |
| Loomis Sayles & Co L P | 851,817 | $62.2M | 0.07% | −32,798−3.7% | Reduced |
| Fisher Asset Management, LLC | 860,383 | $62.8M | 0.02% | −14,896−1.7% | Reduced |
| Price T Rowe Associates Inc | 867,670 | $63.3M | 0.01% | +1,593+0.2% | Added |
| William Blair Investment Management, LLC | 984,273 | $71.9M | 0.20% | −1,503,684−60.4% | Reduced |
| Neuberger Berman Group LLC | 1,030,103 | $75.2M | 0.06% | −16,366−1.6% | Reduced |
| FMR LLC | 1,152,192 | $84.1M | 0.00% | −331,281−22.3% | Reduced |
| Goldman Sachs Group Inc | 1,156,397 | $84.4M | 0.01% | −83,038−6.7% | Reduced |
| First Trust Advisors LP | 1,279,384 | $93.4M | 0.07% | −253,438−16.5% | Reduced |
| Ameriprise Financial Inc | 1,289,685 | $94.2M | 0.02% | +1,009,297+360.0% | Added |
| Geode Capital Management, LLC | 1,368,659 | $99.9M | 0.01% | +47,174+3.6% | Added |
| Dimensional Fund Advisors LP | 1,475,821 | $107.8M | 0.02% | −267,993−15.4% | Reduced |
| T. Rowe Price Investment Management, Inc. | 1,542,851 | $112.6M | 0.07% | +21,182+1.4% | Added |
| Invesco Ltd. | 1,910,742 | $139.5M | 0.01% | +383,299+25.1% | Added |
| Conestoga Capital Advisors, LLC | 2,174,807 | $158.8M | 2.67% | −105,102−4.6% | Reduced |
| State Street Corp | 3,423,600 | $250.0M | 0.01% | +368,242+12.1% | Added |
| JANA Partners Management, LP | 4,959,481 | $362.1M | 18.84% | −1,000,000−16.8% | Reduced |
| Vanguard Group Inc | 5,632,049 | $411.2M | 0.01% | −98,984−1.7% | Reduced |
| BlackRock, Inc. | 8,611,638 | $628.7M | 0.01% | +134,480+1.6% | Added |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −148,351−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −58,309−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −25,641−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −25,139−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −22,350−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −15,912−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −13,654−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −13,082−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −12,866−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −8,668−100.0% | Sold out |
| New Age Alpha Advisors, LLC | 0 | $0 | 0.00% | −6,929−100.0% | Sold out |
| Caxton Associates LLP | 0 | $0 | 0.00% | −6,813−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −5,802−100.0% | Sold out |
| CIBC Asset Management Inc | 0 | $0 | 0.00% | −5,217−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −4,866−100.0% | Sold out |
| Verdence Capital Advisors LLC | 0 | $0 | 0.00% | −4,469−100.0% | Sold out |
| Lombard Odier Asset Management (USA) Corp | 0 | $0 | 0.00% | −4,206−100.0% | Sold out |
| Vicus Capital | 0 | $0 | 0.00% | −4,089−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −3,801−100.0% | Sold out |
| Storebrand Asset Management AS | 0 | $0 | 0.00% | −3,500−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −3,486−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −3,401−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −3,063−100.0% | Sold out |
| Peapack Gladstone Financial Corp | 0 | $0 | 0.00% | −2,827−100.0% | Sold out |
| Marco Investment Management LLC | 0 | $0 | 0.00% | −2,655−100.0% | Sold out |
| Wexford Capital LP | 0 | $0 | 0.00% | −853−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −427−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −60−100.0% | Sold out |
| Atlantic Trust, LLC | 0 | $0 | 0.00% | −18−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Cloud Capital Management, LLC | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Glenmede Investment Management, LP | – | – | – | – | Not filed |
| CIBC Bancorp USA Inc. | – | – | – | – | Not filed |
| Hemington Wealth Management | – | – | – | – | Not filed |