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, 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 | 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, 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 |
|---|---|---|---|---|---|
| Royal Bank of Canada | 680,541 | $52.7M | 0.01% | −85,557−11.2% | Reduced |
| Segall Bryant & Hamill, LLC | 684,123 | $53.0M | 0.71% | −315,062−31.5% | Reduced |
| Van Eck Associates Corp | 720,856 | $55.8M | 0.05% | +12,296+1.7% | Added |
| Allspring Global Investments Holdings, LLC | 693,867 | $56.3M | 0.09% | +514,756+287.4% | Added |
| Victory Capital Management Inc | 750,321 | $58.1M | 0.04% | −1,010,980−57.4% | Reduced |
| Lord, Abbett & Co. LLC | 770,246 | $59.6M | 0.18% | +217,600+39.4% | Added |
| Snyder Capital Management L P | 781,404 | $60.5M | 1.14% | −176,498−18.4% | Reduced |
| Price T Rowe Associates Inc | 866,077 | $67.0M | 0.01% | +822,089+1,868.9% | Added |
| Fisher Asset Management, LLC | 875,279 | $67.7M | 0.02% | +153,946+21.3% | Added |
| Morgan Stanley | 876,397 | $67.8M | 0.00% | −51,774−5.6% | Reduced |
| Loomis Sayles & Co L P | 884,615 | $68.5M | 0.08% | −107,995−10.9% | Reduced |
| Neuberger Berman Group LLC | 1,046,469 | $80.9M | 0.06% | −9,951−0.9% | Reduced |
| Goldman Sachs Group Inc | 1,239,435 | $95.9M | 0.01% | +182,521+17.3% | Added |
| Bamco Inc | 1,295,284 | $100.3M | 0.27% | +60,483+4.9% | Added |
| Geode Capital Management, LLC | 1,321,485 | $102.3M | 0.01% | +56,475+4.5% | Added |
| FMR LLC | 1,483,473 | $114.8M | 0.01% | +314,381+26.9% | Added |
| T. Rowe Price Investment Management, Inc. | 1,521,669 | $117.8M | 0.07% | +552,854+57.1% | Added |
| Invesco Ltd. | 1,527,443 | $118.2M | 0.02% | +943,736+161.7% | Added |
| First Trust Advisors LP | 1,532,822 | $118.6M | 0.09% | +751,813+96.3% | Added |
| Dimensional Fund Advisors LP | 1,743,814 | $135.0M | 0.03% | −87,561−4.8% | Reduced |
| Conestoga Capital Advisors, LLC | 2,279,909 | $176.5M | 2.83% | −279,026−10.9% | Reduced |
| William Blair Investment Management, LLC | 2,487,957 | $192.6M | 0.50% | −2,207,726−47.0% | Reduced |
| State Street Corp | 3,055,358 | $236.5M | 0.01% | −191,215−5.9% | Reduced |
| Vanguard Group Inc | 5,731,033 | $443.6M | 0.01% | +221,093+4.0% | Added |
| JANA Partners Management, LP | 5,959,481 | $461.3M | 22.33% | −793,932−11.8% | Reduced |
| BlackRock, Inc. | 8,477,158 | $656.1M | 0.01% | +228,189+2.8% | Added |
| Scopia Capital Management LP | 0 | $0 | 0.00% | −446,623−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −67,916−100.0% | Sold out |
| Kettle Hill Capital Management, LLC | 0 | $0 | 0.00% | −57,905−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −45,871−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −35,770−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −31,252−100.0% | Sold out |
| SummitTX Capital, L.P. | 0 | $0 | 0.00% | −27,148−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −22,861−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −14,279−100.0% | Sold out |
| OmniStar Financial Group, Inc. | 0 | $0 | 0.00% | −11,861−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −10,493−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −10,247−100.0% | Sold out |
| ISAM Funds (UK) Ltd | 0 | $0 | 0.00% | −8,772−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −7,963−100.0% | Sold out |
| Maxi Investments CY Ltd | 0 | $0 | 0.00% | −7,460−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −6,857−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −3,748−100.0% | Sold out |
| Ridgewood Investments LLC | 0 | $0 | 0.00% | −1,350−100.0% | Sold out |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0 | $0 | 0.00% | −642−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −165−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −146−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −83−100.0% | Sold out |
| Geneos Wealth Management Inc. | 0 | $0 | 0.00% | −49−100.0% | Sold out |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Stephens Consulting, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| CIBC World Markets Corp | – | – | – | – | Not filed |
| Parkworth Wealth Management, Inc. | – | – | – | – | Not filed |