Mercury SystemsMRCY
13F holders, Q1 2025 (March 31)253holders +10
40new positions
31sold out
8famous investors
$43.08avg. 13F price*
At the end of Q1 2025, 253 institutions reported holding Mercury Systems Inc. (MRCY) in their 13F filings, up 10 from Q4 2024. 40 opened new positions and 31 sold out. The largest holders were BlackRock, Inc. ($377.9M), JANA Partners Management, LP ($299.1M) and Vanguard Group Inc. ($237.0M). 8 famous investors held it, including Ron Baron (0.2% of Baron Capital (BAMCO)'s portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Mercury Systems Inc.
- CUSIP
- 589378108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 40 | $54.6M |
| Exits | 31 | $20.9M |
All 13F filers, Q4 2024 → Q1 2025: 4,641,659 shares bought and 4,498,945 shares sold, net +142,714 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 253 holders
| BlackRock, Inc. | 0.01% | Reduce -0.6% | 8,770,778 | $377.9M |
| JANA Partners Management, LP | 15.45% | No change | 6,941,565 | $299.1M |
| Vanguard Group Inc. | 0.00% | Reduce -0.9% | 5,500,788 | $237.0M |
| William Blair Investment Management, LLC | 0.65% | Reduce -16.5% | 5,372,198 | $231.5M |
| State Street Corp. | 0.01% | Add +1.7% | 2,987,185 | $128.7M |
| Conestoga Capital Advisors, LLC | 1.47% | Add +8.9% | 2,258,186 | $97.3M |
| Dimensional Fund Advisors LP | 0.02% | Reduce -7.2% | 2,044,217 | $88.1M |
| Victory Capital Management Inc. | 0.08% | Reduce -15.8% | 1,734,791 | $74.8M |
| Geode Capital Management, LLC | 0.00% | Add +2.8% | 1,264,475 | $54.5M |
| Baron Capital (BAMCO) | 0.15% | Reduce -0.4% | 1,196,046 | $51.5M |
| Fuller & Thaler Asset Management, Inc. | 0.20% | Reduce -1.9% | 1,180,391 | $50.9M |
| Snyder Capital Management L P | 1.06% | Reduce -3.2% | 1,128,147 | $48.6M |
| Neuberger Berman Group LLC | 0.04% | Reduce -0.6% | 1,063,338 | $46.0M |
| Segall Bryant & Hamill, LLC | 0.68% | Reduce -19.3% | 1,025,622 | $44.2M |
| First Trust Advisors LP | 0.04% | Reduce -4.5% | 944,025 | $40.7M |
| Scopia Capital Management LP | 5.39% | Reduce -34.4% | 871,772 | $37.3M |
| Goldman Sachs Group Inc. | 0.01% | Add +51.5% | 855,441 | $36.9M |
| FMR LLC | 0.00% | Add +50.8% | 838,140 | $36.1M |
| Royal Bank of Canada | 0.01% | Add +0.7% | 762,406 | $32.9M |
| Fisher Asset Management | 0.01% | Add +82.4% | 720,938 | $31.1M |
| Millennium Management | 0.03% | Reduce -33.2% | 684,004 | $29.5M |
| Charles Schwab Investment Management Inc. | 0.01% | Reduce -0.1% | 672,368 | $29.0M |
| Invesco Ltd. | 0.01% | Reduce -3.4% | 610,687 | $26.3M |
| Northern Trust Corp. | 0.00% | Reduce -0.4% | 591,051 | $25.5M |
| Van Eck Associates Corp. | 0.03% | Add +96.6% | 583,998 | $25.2M |
| UBS Group AG | 0.01% | Add +5.2% | 560,719 | $24.2M |
| Morgan Stanley | 0.00% | Add +5.3% | 542,840 | $23.4M |
| Marshall Wace, LLP | 0.03% | Add +80.6% | 536,163 | $23.1M |
| MetLife Investment Management, LLC | 0.11% | Add +1479.5% | 492,638 | $21.2M |
| Staley Capital Advisers Inc. | 0.92% | Reduce -3.1% | 473,130 | $20.4M |
| WCM Investment Management, LLC | 0.05% | Add +0.1% | 442,153 | $18.9M |
| Oberweis Asset Management Inc./ | 0.89% | New | 412,300 | $17.8M |
| Ameriprise Financial Inc. | 0.00% | Reduce -4.0% | 376,814 | $16.2M |
| Kennedy Capital Management LLC | 0.36% | Reduce -24.6% | 351,678 | $15.2M |
| Aristotle Capital Boston, LLC | 0.71% | Reduce -23.1% | 330,687 | $14.2M |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.7% | 312,013 | $13.4M |
| Principal Financial Group Inc. | 0.01% | Add +11.8% | 274,954 | $11.8M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.02% | Add +52.5% | 266,901 | $11.5M |
| Royce & Associates LP | 0.12% | Reduce -1.9% | 257,559 | $11.1M |
| Bank of America Corp. | 0.00% | Reduce -8.7% | 255,080 | $11.0M |
| Loomis Sayles & Co. L P | 0.01% | Reduce -6.6% | 235,394 | $10.1M |
| Comerica Bank | 0.04% | Add +19.8% | 218,362 | $9.4M |
| Nuveen, LLC | 0.00% | — | 203,095 | $8.8M |
| 13D Management LLC | 7.70% | Reduce -8.3% | 202,701 | $8.7M |
| Citadel Advisors | 0.01% | Add +1390.1% | 189,435 | $8.2M |
| Sei Investments Co. | 0.01% | Add +18.4% | 170,756 | $7.4M |
| Legal & General Group Plc | 0.00% | Reduce -1.2% | 161,893 | $7.0M |
| Public Sector Pension Investment Board | 0.03% | Add +27.1% | 160,827 | $6.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +13.4% | 159,617 | $6.9M |
| Two Sigma Investments, LP | 0.02% | Reduce -60.1% | 159,355 | $6.9M |
| Rhumbline Advisers | 0.01% | Reduce -4.2% | 154,740 | $6.7M |
| Barclays PLC | 0.00% | Reduce -20.7% | 152,787 | $6.6M |
| Raymond James Financial Inc. | 0.00% | Add +49.1% | 151,151 | $6.5M |
| Verition Fund Management LLC | 0.04% | Add +628.4% | 150,630 | $6.5M |
| Macquarie Group Ltd. | 0.01% | New | 148,271 | $6.4M |
| Blair William & Co. | 0.02% | Reduce -2.9% | 132,168 | $5.7M |
| LPL Financial LLC | 0.00% | Add +145.1% | 129,295 | $5.5M |
| Tudor Investment Corporation | 0.05% | New | 122,631 | $5.3M |
| Trexquant Investment LP | 0.06% | Add +100.7% | 121,220 | $5.2M |
| Citigroup Inc. | 0.00% | Add +5.2% | 112,796 | $4.9M |
| Swiss National Bank | 0.00% | Reduce -1.3% | 98,200 | $4.2M |
| JPMorgan Chase & Co. | 0.00% | Reduce -34.6% | 95,916 | $4.1M |
| D. E. Shaw & Co. | 0.01% | Reduce -22.4% | 91,496 | $3.9M |
| Intech Investment Management LLC | 0.03% | Add +199.3% | 76,848 | $3.3M |
| Vident Advisory, LLC | 0.05% | Add +114.1% | 76,533 | $3.3M |
| B. Metzler seel. Sohn & Co. AG | 0.03% | No change | 76,501 | $3.3M |
| King Luther Capital Management Corp. | 0.02% | Reduce -26.9% | 76,074 | $3.3M |
| Informed Momentum Co LLC | 0.54% | New | 71,883 | $3.1M |
| Axiom Investors LLC | 0.03% | New | 67,625 | $2.9M |
| Mutual of America Capital Management LLC | 0.03% | Reduce -0.1% | 66,720 | $2.9M |
| Boothbay Fund Management, LLC | 0.10% | Reduce -23.6% | 66,384 | $2.9M |
| Alliancebernstein L.P. | 0.00% | No change | 65,544 | $2.8M |
| Susquehanna International Group, LLP | 0.00% | Add +13.7% | 63,924 | $2.8M |
| American Century Companies Inc. | 0.00% | Add +524.7% | 62,882 | $2.7M |
| State of Wisconsin Investment Board | 0.01% | Add +481.7% | 61,979 | $2.7M |
| New York State Teachers Retirement System | 0.01% | Reduce -0.3% | 59,911 | $2.6M |
| Lisanti Capital Growth, LLC | 0.76% | New | 59,455 | $2.6M |
| Cerity Partners LLC | 0.01% | Reduce -0.2% | 57,334 | $2.5M |
| Two Sigma Advisers, LP | 0.01% | Reduce -74.8% | 57,100 | $2.5M |
| Deutsche Bank AG | 0.00% | Reduce -62.9% | 56,234 | $2.4M |
| Zions Bancorporation, National Association | 0.15% | — | 54,729 | $2.4M |
| Jane Street Group, LLC | 0.00% | Add +249.4% | 50,769 | $2.2M |
| Prudential Financial Inc. | 0.00% | Reduce -3.7% | 50,015 | $2.2M |
| Natixis | 0.01% | Add +817.5% | 49,361 | $2.1M |
| California State Teachers Retirement System | 0.00% | Reduce -2.1% | 46,432 | $2.0M |
| Rice Hall James & Associates, LLC | 0.12% | New | 46,238 | $2.0M |
| Algert Global LLC | 0.05% | New | 45,850 | $2.0M |
| Wells Fargo & Company | 0.00% | Add +1.0% | 45,137 | $1.9M |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -11.9% | 43,825 | $1.9M |
| Moody National Bank Trust Division | 0.18% | Reduce -10.9% | 41,014 | $1.8M |
| T. Rowe Price Associates Inc. | 0.00% | Add +8.2% | 40,946 | $1.8M |
| Ironwood Investment Management LLC | 0.96% | Reduce -0.3% | 40,864 | $1.8M |
| Russell Investments Group, Ltd. | 0.00% | Add +160.8% | 40,842 | $1.8M |
| Quantinno Capital Management LP | 0.01% | Add +34.2% | 38,208 | $1.6M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -4.9% | 37,261 | $1.6M |
| Jackson Creek Investment Advisors LLC | 0.48% | New | 35,236 | $1.5M |
| Oppenheimer & Co. Inc. | 0.02% | Reduce -3.7% | 33,190 | $1.4M |
| Manufacturers Life Insurance Company, The | 0.00% | Add +3.5% | 30,484 | $1.3M |
| State of Alaska, Department of Revenue | 0.01% | Reduce -2.4% | 28,109 | $1.2M |
| Gotham Asset Management | 0.01% | Add +168.7% | 28,022 | $1.2M |
"% of holder's portfolio" is MRCY's weight in each manager's 13F, not the share of Mercury Systems Inc. the manager owns.