Mercury SystemsMRCY
13F holders, Q4 2024 (December 31)243holders −2
22new positions
25sold out
6famous investors
$42.00avg. 13F price*
At the end of Q4 2024, 243 institutions reported holding Mercury Systems Inc. (MRCY) in their 13F filings, down 2 from Q3 2024. 22 opened new positions and 25 sold out. The largest holders were BlackRock, Inc. ($370.5M), JANA Partners Management, LP ($291.5M) and William Blair Investment Management, LLC ($270.2M). 6 famous investors held it, including Ron Baron (0.1% of Baron Capital (BAMCO)'s portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Fisher (0.0% of Fisher Asset Management's portfolio).
- Company
- Mercury Systems Inc.
- CUSIP
- 589378108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2024 → Q4 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 22 | $21.7M |
| Exits | 25 | $80.1M |
All 13F filers, Q3 2024 → Q4 2024: 5,751,075 shares bought and 4,832,145 shares sold, net +918,930 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 243 holders
| BlackRock, Inc. | 0.01% | Add +1.7% | 8,820,916 | $370.5M |
| JANA Partners Management, LP | 15.23% | No change | 6,941,565 | $291.5M |
| William Blair Investment Management, LLC | 0.66% | Reduce -11.9% | 6,432,601 | $270.2M |
| Vanguard Group Inc. | 0.00% | Add +0.8% | 5,550,610 | $233.1M |
| State Street Corp. | 0.00% | Reduce -8.2% | 2,936,241 | $123.3M |
| Dimensional Fund Advisors LP | 0.02% | Add +2.5% | 2,202,124 | $92.5M |
| Conestoga Capital Advisors, LLC | 1.15% | Add +55.9% | 2,072,817 | $87.1M |
| Victory Capital Management Inc. | 0.09% | Add +16.7% | 2,060,131 | $86.5M |
| Scopia Capital Management LP | 5.90% | Add +95.5% | 1,328,021 | $55.8M |
| Segall Bryant & Hamill, LLC | 0.73% | Add +0.1% | 1,270,821 | $53.4M |
| Geode Capital Management, LLC | 0.00% | Reduce -3.2% | 1,230,214 | $51.7M |
| Fuller & Thaler Asset Management, Inc. | 0.19% | Reduce -0.2% | 1,202,667 | $50.5M |
| Baron Capital (BAMCO) | 0.13% | Reduce -0.4% | 1,201,324 | $50.5M |
| Snyder Capital Management L P | 1.02% | Reduce -6.3% | 1,165,119 | $48.9M |
| Neuberger Berman Group LLC | 0.04% | Reduce -0.7% | 1,069,618 | $44.9M |
| Millennium Management | 0.04% | Add +196.1% | 1,023,508 | $43.0M |
| First Trust Advisors LP | 0.04% | Add +50.8% | 988,936 | $41.5M |
| Royal Bank of Canada | 0.01% | Reduce -0.7% | 757,236 | $31.8M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +2.2% | 673,224 | $28.3M |
| Invesco Ltd. | 0.00% | Add +6.4% | 631,961 | $26.5M |
| Northern Trust Corp. | 0.00% | Add +2.9% | 593,455 | $24.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +1.9% | 564,452 | $23.7M |
| FMR LLC | 0.00% | Add +18028.3% | 555,994 | $23.4M |
| UBS Group AG | 0.01% | Add +1428.1% | 533,250 | $22.4M |
| Morgan Stanley | 0.00% | Reduce -6.6% | 515,261 | $21.6M |
| Mesirow Institutional Investment Management, Inc. | 1.62% | Add +14.7% | 500,831 | $21.0M |
| Staley Capital Advisers Inc. | 0.91% | Reduce -1.4% | 488,080 | $20.5M |
| Kennedy Capital Management LLC | 0.43% | Add +146.9% | 466,177 | $19.6M |
| WCM Investment Management, LLC | 0.04% | Reduce -1.9% | 441,792 | $18.6M |
| Aristotle Capital Boston, LLC | 0.67% | Reduce -14.8% | 430,121 | $18.1M |
| Two Sigma Investments, LP | 0.04% | Reduce -15.9% | 399,246 | $16.8M |
| Fisher Asset Management | 0.01% | New | 395,265 | $16.6M |
| Ameriprise Financial Inc. | 0.00% | Add +13.5% | 392,358 | $16.5M |
| Bank of New York Mellon Corp | 0.00% | Reduce -7.5% | 327,523 | $13.8M |
| Van Eck Associates Corp. | 0.02% | Add +35.1% | 297,109 | $12.5M |
| Marshall Wace, LLP | 0.02% | Reduce -28.7% | 296,908 | $12.5M |
| Bank of America Corp. | 0.00% | Reduce -46.2% | 279,385 | $11.7M |
| Royce & Associates LP | 0.10% | Add +18.7% | 262,659 | $11.0M |
| Loomis Sayles & Co. L P | 0.01% | No change | 251,908 | $10.6M |
| Principal Financial Group Inc. | 0.01% | Add +3.1% | 245,880 | $10.3M |
| Two Sigma Advisers, LP | 0.02% | Reduce -4.4% | 226,800 | $9.5M |
| Nuveen Asset Management, LLC | 0.00% | Reduce -1.6% | 221,891 | $9.3M |
| 13D Management LLC | 6.88% | Add +68.1% | 221,015 | $9.3M |
| Barclays PLC | 0.00% | Add +9.7% | 192,597 | $8.1M |
| Comerica Bank | 0.03% | Add +46.5% | 182,232 | $7.7M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.02% | Add +24.3% | 174,971 | $7.3M |
| Legal & General Group Plc | 0.00% | Reduce -1.7% | 163,905 | $6.9M |
| Rhumbline Advisers | 0.01% | Add +0.1% | 161,495 | $6.8M |
| Deutsche Bank AG | 0.00% | Add +190.8% | 151,476 | $6.4M |
| JPMorgan Chase & Co. | 0.00% | Add +217.2% | 146,624 | $6.2M |
| Sei Investments Co. | 0.01% | Add +10.0% | 144,186 | $6.1M |
| Prelude Capital Management, LLC | 0.51% | Reduce -11.3% | 143,928 | $6.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +11.2% | 140,701 | $5.9M |
| Blair William & Co. | 0.02% | Reduce -13.5% | 136,039 | $5.7M |
| Public Sector Pension Investment Board | 0.02% | Add +18.1% | 126,492 | $5.3M |
| D. E. Shaw & Co. | 0.01% | Add +56.4% | 117,973 | $5.0M |
| Citigroup Inc. | 0.00% | Reduce -2.8% | 107,253 | $4.5M |
| King Luther Capital Management Corp. | 0.02% | Reduce -4.6% | 104,074 | $4.4M |
| Raymond James Financial Inc. | 0.00% | — | 101,384 | $4.3M |
| Swiss National Bank | 0.00% | Add +1.0% | 99,500 | $4.2M |
| Boothbay Fund Management, LLC | 0.12% | Reduce -3.3% | 86,847 | $3.6M |
| B. Metzler seel. Sohn & Co. AG | 0.03% | No change | 76,501 | $3.2M |
| CenterBook Partners LP | 0.18% | Reduce -13.8% | 72,048 | $3.0M |
| M&T Bank Corp | 0.01% | Reduce -1.9% | 69,857 | $2.9M |
| Mutual of America Capital Management LLC | 0.03% | Add +0.1% | 66,797 | $2.8M |
| Alliancebernstein L.P. | 0.00% | Reduce -0.9% | 65,544 | $2.8M |
| Trexquant Investment LP | 0.03% | Reduce -63.8% | 60,400 | $2.5M |
| New York State Teachers Retirement System | 0.01% | Reduce -0.2% | 60,111 | $2.5M |
| Cerity Partners LLC | 0.01% | Reduce -1.2% | 57,464 | $2.4M |
| Redwood Investment Management, LLC | 0.23% | Reduce -21.0% | 57,149 | $2.4M |
| Susquehanna International Group, LLP | 0.00% | Add +180.9% | 56,206 | $2.4M |
| LPL Financial LLC | 0.00% | Add +11.4% | 52,746 | $2.3M |
| Prudential Financial Inc. | 0.00% | Reduce -1.8% | 51,915 | $2.2M |
| Zions Bancorporation, N.A. | 0.13% | Add +14.4% | 50,159 | $2.1M |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -0.5% | 49,769 | $2.1M |
| California State Teachers Retirement System | 0.00% | Reduce -1.3% | 47,410 | $2.0M |
| Moody National Bank Trust Division | 0.20% | Add +0.4% | 46,019 | $1.9M |
| Wells Fargo & Company | 0.00% | Add +12.7% | 44,685 | $1.9M |
| Ironwood Investment Management LLC | 0.86% | Add +0.7% | 40,994 | $1.7M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -1.2% | 39,179 | $1.6M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -4.2% | 37,860 | $1.6M |
| Vident Advisory, LLC | 0.03% | Add +29.2% | 35,749 | $1.5M |
| BNP Paribas Financial Markets | 0.00% | Reduce -27.5% | 34,480 | $1.4M |
| Oppenheimer & Co. Inc. | 0.02% | Reduce -12.8% | 34,450 | $1.4M |
| Crestline Management, L.P. | 0.05% | Reduce -86.9% | 33,935 | $1.4M |
| MetLife Investment Management, LLC | 0.01% | Reduce -1.5% | 31,189 | $1.3M |
| Bouvel Investment Partners, LLC | 0.47% | New | 31,113 | $1.3M |
| Needham Investment Management LLC | 0.10% | Reduce -14.3% | 30,000 | $1.3M |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -6.5% | 29,451 | $1.2M |
| PEAK6 LLC | 0.05% | — | 29,015 | $1.2M |
| State of Alaska, Department of Revenue | 0.01% | Reduce -0.0% | 28,807 | $1.2M |
| Quantinno Capital Management LP | 0.01% | Add +156.5% | 28,462 | $1.2M |
| Illinois Municipal Retirement Fund | 0.02% | Reduce -0.4% | 28,454 | $1.2M |
| Corebridge Financial, Inc. | 0.01% | Reduce -11.7% | 27,644 | $1.2M |
| Holocene Advisors, LP | 0.00% | Reduce -4.8% | 26,058 | $1.1M |
| Intech Investment Management LLC | 0.01% | Add +110.3% | 25,680 | $1.1M |
| Louisiana State Employees Retirement System | 0.02% | Add +0.4% | 24,500 | $1.0M |
| Janus Henderson Group PLC | 0.00% | No change | 24,025 | $1.0M |
| Aquatic Capital Management LLC | 0.03% | Reduce -39.4% | 22,320 | $937K |
| South Dakota Investment Council | 0.02% | No change | 21,678 | $910K |
"% of holder's portfolio" is MRCY's weight in each manager's 13F, not the share of Mercury Systems Inc. the manager owns.