Mercury SystemsMRCY

13F holders, Q2 2025 (June 30)
285holders +32
51new positions
22sold out
8famous investors
$53.85avg. 13F price*

At the end of Q2 2025, 285 institutions reported holding Mercury Systems Inc. (MRCY) in their 13F filings, up 32 from Q1 2025. 51 opened new positions and 22 sold out. The largest holders were BlackRock, Inc. ($444.3M), JANA Partners Management, LP ($363.7M) and Vanguard Group Inc. ($296.8M). 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

0100200300400 Q1 2024: 222Q1 2024Q2 2024: 232Q2 2024Q3 2024: 245Q3 2024Q4 2024: 243Q4 2024Q1 2025: 253Q1 2025Q2 2025: 285Q2 2025Q3 2025: 326Q3 2025Q4 2025: 347Q4 2025Q1 2026: 357Q1 2026Q2 2026: 392Q2 2026

Total Exit/New Position Q1 2025 → Q2 2025

InstitutionsTotal Value
New Positions51$194.7M
Exits22$16.0M

All 13F filers, Q1 2025 → Q2 2025: 7,675,455 shares bought and 5,769,230 shares sold, net +1,906,225 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 285 holders

BlackRock, Inc. 0.01% Reduce -6.0% 8,248,969 $444.3M
JANA Partners Management, LP 18.27% Reduce -2.7% 6,753,413 $363.7M
Vanguard Group Inc. 0.00% Add +0.2% 5,509,940 $296.8M
William Blair Investment Management, LLC 0.67% Reduce -12.6% 4,695,683 $252.9M
State Street Corp. 0.01% Add +8.7% 3,246,573 $174.9M
Conestoga Capital Advisors, LLC 2.04% Add +13.3% 2,558,935 $137.8M
Dimensional Fund Advisors LP 0.02% Reduce -10.4% 1,831,375 $98.6M
Victory Capital Management Inc. 0.06% Add +1.5% 1,761,301 $94.9M
Geode Capital Management, LLC 0.00% Add +0.0% 1,265,010 $68.1M
Baron Capital (BAMCO) 0.18% Add +3.2% 1,234,801 $66.5M
FMR LLC 0.00% Add +39.5% 1,169,092 $63.0M
Goldman Sachs Group Inc. 0.01% Add +23.6% 1,056,914 $56.9M
Neuberger Berman Group LLC 0.04% Reduce -0.7% 1,056,420 $56.9M
Segall Bryant & Hamill, LLC 0.76% Reduce -2.6% 999,185 $53.8M
Loomis Sayles & Co. L P 0.07% Add +321.7% 992,610 $53.5M
T. Rowe Price Investment Management, Inc. 0.03% New 968,815 $52.2M
Snyder Capital Management L P 1.10% Reduce -15.1% 957,902 $51.6M
Morgan Stanley 0.00% Add +71.0% 928,171 $50.0M
First Trust Advisors LP 0.03% Reduce -17.3% 781,009 $42.1M
Royal Bank of Canada 0.01% Add +0.5% 766,098 $41.3M
Fisher Asset Management 0.02% Add +0.1% 721,333 $38.9M
Van Eck Associates Corp. 0.04% Add +21.3% 708,560 $38.2M
Charles Schwab Investment Management Inc. 0.01% Reduce -4.7% 640,950 $34.5M
Invesco Ltd. 0.01% Reduce -4.4% 583,707 $31.4M
Lord, Abbett & Co. LLC 0.10% New 552,646 $29.8M
Northern Trust Corp. 0.00% Reduce -7.5% 546,922 $29.5M
Kennedy Capital Management LLC 0.68% Add +51.0% 530,933 $28.6M
Millennium Management 0.03% Reduce -25.7% 508,418 $27.4M
Staley Capital Advisers Inc. 1.08% Reduce -0.6% 470,130 $25.3M
Emerald Advisers, LLC 0.90% New 456,713 $24.6M
Scopia Capital Management LP 2.94% Reduce -48.8% 446,623 $24.1M
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.04% Add +58.7% 423,483 $22.8M
Ameriprise Financial Inc. 0.01% Add +10.3% 415,809 $22.4M
Oberweis Asset Management Inc./ 0.93% Reduce -3.4% 398,500 $21.5M
MetLife Investment Management, LLC 0.12% Reduce -20.2% 393,013 $21.2M
Silvercrest Asset Management Group LLC 0.14% New 387,119 $20.9M
WCM Investment Management, LLC 0.04% Reduce -19.8% 354,684 $18.9M
Aristotle Capital Boston, LLC 0.87% Reduce -4.6% 315,550 $17.0M
Bank of New York Mellon Corp 0.00% Add +0.3% 312,822 $16.8M
Bank of America Corp. 0.00% Add +17.8% 300,540 $16.2M
Citadel Advisors 0.01% Add +56.8% 296,977 $16.0M
Principal Financial Group Inc. 0.01% Add +2.8% 282,599 $15.2M
Emerald Mutual Fund Advisers Trust 0.86% New 263,218 $14.2M
Comerica Bank 0.05% Add +11.4% 243,270 $13.1M
Royce & Associates LP 0.13% Reduce -8.6% 235,459 $12.7M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% Add +37.2% 219,007 $11.8M
Driehaus Capital Management LLC 0.09% New 218,346 $11.8M
Barclays PLC 0.00% Add +26.6% 193,468 $10.4M
Prudential Financial Inc. 0.01% Add +286.2% 193,175 $10.4M
Sei Investments Co. 0.01% Add +11.6% 190,599 $10.3M
Nuveen, LLC 0.00% Reduce -9.5% 183,749 $9.9M
Public Sector Pension Investment Board 0.04% Add +7.7% 173,201 $9.3M
Verition Fund Management LLC 0.06% Add +14.3% 172,250 $9.3M
Allspring Global Investments Holdings, LLC 0.02% New 179,111 $9.1M
UBS Group AG 0.00% Reduce -70.0% 168,332 $9.1M
Raymond James Financial Inc. 0.00% Add +10.1% 166,478 $9.0M
Legal & General Group Plc 0.00% Add +1.4% 164,243 $8.8M
Mutual of America Capital Management LLC 0.09% Add +136.6% 157,856 $8.5M
Macquarie Group Ltd. 0.01% Add +6.2% 157,470 $8.5M
Rhumbline Advisers 0.01% Add +0.7% 155,746 $8.4M
Two Sigma Investments, LP 0.02% Reduce -3.1% 154,399 $8.3M
Axiom Investors LLC 0.06% Add +110.1% 142,108 $7.7M
13D Management LLC 6.73% Reduce -32.4% 137,012 $7.4M
LPL Financial LLC 0.00% Reduce -0.8% 128,256 $6.9M
Blair William & Co. 0.02% Reduce -5.4% 125,047 $6.7M
JPMorgan Chase & Co. 0.00% Add +30.3% 124,973 $6.7M
Trexquant Investment LP 0.07% Add +0.9% 122,321 $6.6M
King Luther Capital Management Corp. 0.03% Add +41.2% 107,443 $5.8M
Vident Advisory, LLC 0.06% Add +34.3% 102,751 $5.5M
Swiss National Bank 0.00% Reduce -1.3% 96,900 $5.2M
Lisanti Capital Growth, LLC 1.41% Add +58.5% 94,205 $5.1M
Castleark Management LLC 0.15% New 92,800 $5.0M
Tudor Investment Corporation 0.04% Reduce -25.4% 91,434 $4.9M
Citigroup Inc. 0.00% Reduce -20.2% 90,051 $4.9M
Russell Investments Group, Ltd. 0.01% Add +106.9% 84,519 $4.6M
Select Equity Group, L.P. 0.02% Add +351.6% 83,770 $4.5M
Rice Hall James & Associates, LLC 0.22% Add +60.5% 74,199 $4.0M
D. E. Shaw & Co. 0.00% Reduce -20.3% 72,924 $3.9M
Great Lakes Advisors, LLC 0.03% New 69,485 $3.7M
Susquehanna International Group, LLP 0.01% Add +8.4% 69,315 $3.7M
Marshall Wace, LLP 0.00% Reduce -87.3% 67,916 $3.7M
State of Wisconsin Investment Board 0.01% Reduce -1.4% 61,115 $3.3M
New York State Teachers Retirement System 0.01% No change 59,911 $3.2M
Alliancebernstein L.P. 0.00% Reduce -8.8% 59,745 $3.2M
Zions Bancorporation, National Association 0.17% Add +6.5% 58,286 $3.1M
Kettle Hill Capital Management, LLC 0.72% New 57,905 $3.1M
B. Metzler seel. Sohn & Co. AG 0.03% Reduce -24.3% 57,891 $3.1M
Cerity Partners LLC 0.01% Add +0.4% 57,552 $3.1M
Natixis Advisors, LLC 0.00% Add +115.3% 57,347 $3.1M
Calamos Advisors LLC 0.02% Add +179.2% 54,954 $3.0M
Wells Fargo & Company 0.00% Add +12.5% 50,761 $2.7M
Neo Ivy Capital Management 0.87% New 50,632 $2.7M
Archon Capital Management LLC 2.19% New 49,600 $2.7M
California State Teachers Retirement System 0.00% Add +0.9% 46,848 $2.5M
Squarepoint Ops LLC 0.01% Add +406.1% 45,871 $2.5M
T. Rowe Price Associates Inc. 0.00% Add +7.4% 43,988 $2.4M
Gotham Asset Management 0.01% Add +52.6% 42,769 $2.3M
CANADA LIFE ASSURANCE Co 0.00% Reduce -3.1% 42,446 $2.3M
Moody National Bank Trust Division 0.20% No change 41,014 $2.2M
Deutsche Bank AG 0.00% Reduce -28.3% 40,304 $2.2M
Ironwood Investment Management LLC 1.04% Reduce -2.9% 39,670 $2.1M
Quantinno Capital Management LP 0.01% Add +0.8% 38,493 $2.1M
Thrivent Financial for Lutherans 0.00% Add +0.2% 37,348 $2.0M
Algert Global LLC 0.04% Reduce -22.0% 35,770 $1.9M
Intech Investment Management LLC 0.02% Reduce -53.7% 35,587 $1.9M
BNP Paribas Financial Markets 0.00% Add +53.5% 34,674 $1.9M
Cookson Peirce & Co. Inc. 0.08% New 34,217 $1.8M
Voya Investment Management LLC 0.00% Add +30.8% 33,266 $1.8M
Oppenheimer & Co. Inc. 0.02% Reduce -1.2% 32,785 $1.8M
AQR Capital Management 0.00% Add +81.4% 32,907 $1.8M
Boothbay Fund Management, LLC 0.05% Reduce -52.9% 31,252 $1.7M
Bouvel Investment Partners, LLC 0.56% New 30,808 $1.7M
State of Alaska, Department of Revenue 0.02% Add +7.5% 30,232 $1.6M
Connor, Clark & Lunn Investment Management Ltd. 0.01% New 30,001 $1.6M
Manufacturers Life Insurance Company, The 0.00% Reduce -5.6% 28,782 $1.6M
SummitTX Capital, L.P. 0.06% No change 27,148 $1.5M
Illinois Municipal Retirement Fund 0.02% Reduce -4.1% 25,782 $1.4M
Future Fund LLC 0.62% Add +139.1% 25,734 $1.4M
Pathstone Holdings, LLC 0.01% Add +19.0% 24,869 $1.3M
Legato Capital Management LLC 0.15% Add +81.2% 24,085 $1.3M
Sterling Capital Management LLC 0.02% Add +2575.6% 24,000 $1.3M
Louisiana State Employees Retirement System 0.02% Reduce -0.8% 23,700 $1.3M
FIL Ltd 0.00% Add +8.7% 23,244 $1.3M
Two Sigma Advisers, LP 0.00% Reduce -59.7% 23,000 $1.2M
Brevan Howard Capital Management LP 0.01% Add +0.9% 22,861 $1.2M
M&T Bank Corp 0.00% Reduce -7.0% 20,868 $1.1M
State of Tennessee, Department of Treasury 0.00% Add +16.3% 20,849 $1.1M
Janus Henderson Group PLC 0.00% Reduce -15.0% 20,425 $1.1M
Ensign Peak Advisors, Inc 0.00% No change 20,002 $1.1M
One Capital Management, LLC 0.04% New 19,929 $1.1M
Stifel Financial Corp. 0.00% Add +187.7% 19,184 $1.0M
Yousif Capital Management, LLC 0.01% Add +0.6% 18,963 $1.0M
Teachers Retirement System of the State of Kentucky 0.01% Reduce -8.0% 18,067 $973K
Mackenzie Financial Corp. 0.00% Add +12.6% 17,849 $961K
Franklin Resources Inc. 0.00% New 17,710 $954K
New York State Common Retirement Fund 0.00% No change 16,257 $876K
Envestnet Asset Management Inc. 0.00% Add +5.4% 16,105 $867K
Creative Planning 0.00% Add +55.7% 15,839 $853K
Hennion & Walsh Asset Management, Inc. 0.03% Add +51.0% 15,807 $851K
SG Americas Securities, LLC 0.00% Reduce -39.1% 14,919 $804K
Bayforest Capital Ltd 0.35% New 14,836 $799K
Maryland State Retirement & Pension System 0.02% No change 14,820 $798K
Arizona State Retirement System 0.00% Add +1.9% 14,782 $796K
Corient Private Wealth LP 0.00% Add +132.3% 14,690 $791K
Amalgamated Bank 0.01% Add +0.3% 14,490 $780K
Engineers Gate Manager LP 0.01% New 14,279 $769K
State Board of Administration of Florida Retirement System 0.00% No change 14,269 $769K
Cim Investment Management Inc. 0.14% Add +100.8% 15,827 $757K
Gsa Capital Partners LLP 0.05% New 13,872 $747K
Captrust Financial Advisors 0.00% New 13,846 $746K
Rafferty Asset Management, LLC 0.00% Add +12.3% 13,163 $709K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS 0.00% Add +7.4% 13,040 $702K
American Century Companies Inc. 0.00% Reduce -79.4% 12,947 $697K
Gabelli Funds LLC 0.01% No change 12,809 $690K
Altfest L J & Co. Inc. 0.08% Reduce -27.4% 12,775 $688K
Bank of Montreal 0.00% Reduce -0.4% 12,394 $668K
Police & Firemen's Retirement System of New Jersey 0.01% Add +4.5% 11,987 $646K
OmniStar Financial Group, Inc. 0.48% Reduce -23.0% 11,861 $639K
TD Asset Management Inc 0.00% New 11,718 $631K
Oregon Public Employees Retirement Fund 0.01% No change 11,662 $628K
ProShare Advisors LLC 0.00% Reduce -5.1% 11,600 $625K
Glenmede Investment Management, LP 0.00% — 11,584 $624K
KLP Kapitalforvaltning As 0.00% Add +4.7% 11,100 $598K
Summit Trail Advisors, LLC 0.01% New 10,805 $582K
WINTON GROUP Ltd 0.03% New 10,493 $565K
Mitsubishi UFJ Asset Management Co., Ltd. 0.00% Reduce -11.4% 10,419 $561K
Group One Trading LLC 0.02% Add +471.5% 10,247 $552K
Needham Investment Management LLC 0.04% Reduce -63.6% 10,000 $539K
Yarbrough Capital, LLC 0.02% No change 9,991 $538K
Greenwood Capital Associates LLC 0.07% Reduce -1.1% 9,966 $537K
Keybank National Association 0.00% Reduce -15.3% 9,268 $499K
Hunter Perkins Capital Management, LLC 0.11% Reduce -6.3% 8,861 $477K
iSAM Funds (UK) Ltd 0.10% Add +43.9% 8,772 $472K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% Reduce -39.4% 8,483 $457K
Holocene Advisors, LP 0.00% Reduce -1.7% 7,963 $429K
Harel Insurance Investments & Financial Services Ltd. 0.00% Add +24.9% 7,751 $417K
Teacher Retirement System of Texas 0.00% Add +4.0% 7,703 $415K
Quadrant Capital Group LLC 0.01% Add +0.1% 7,692 $414K
Lombard Odier Asset Management (USA) Corp 0.13% Add +19.2% 7,605 $410K
Pictet Asset Management Holding SA 0.00% Add +10.7% 7,491 $403K
Maxi Investments CY Ltd 0.07% New 7,460 $402K
Cwm, LLC 0.00% Add +1.2% 7,355 $396K
New Age Alpha Advisors, LLC 0.02% New 7,095 $382K
PNC Financial Services Group, Inc. 0.00% Add +17.9% 7,033 $379K
HSBC Holdings PLC 0.00% New 6,857 $369K
Focus Partners Wealth 0.00% Add +1.9% 6,730 $362K
Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% Add +2.2% 6,597 $355K
Tower Research Capital LLC (TRC) 0.01% Add +516.7% 6,494 $350K
Public Employees Retirement Association of Colorado 0.00% Reduce -14.0% 6,440 $347K
Cibc World Markets Corp. 0.00% Reduce -44.4% 6,416 $346K
Pacer Advisors, Inc. 0.00% New 5,985 $322K
Johnson Investment Counsel Inc. 0.00% No change 5,807 $313K
DekaBank Deutsche Girozentrale 0.00% No change 5,826 $310K
Fuller & Thaler Asset Management, Inc. 0.00% Reduce -99.5% 5,464 $294K
Ameritas Investment Partners, Inc. 0.01% No change 5,371 $289K
Moors & Cabot, Inc. 0.01% Reduce -24.5% 5,250 $283K
CIBC Asset Management Inc 0.00% No change 5,217 $281K
Centaurus Financial, Inc. 0.02% Add +0.1% 4,966 $267K
Verdence Capital Advisors LLC 0.02% New 4,390 $236K
Xponance LLC 0.00% New 4,024 $217K
Wealth Enhancement Advisory Services, LLC 0.00% New 4,135 $213K
Evergreen Capital Management LLC 0.01% New 3,938 $212K
Cambridge Investment Research Advisors, Inc. 0.00% New 3,748 $202K
Walleye Trading LLC 0.00% New 3,627 $195K
US Bancorp \de 0.00% Reduce -10.1% 2,238 $121K
Peregrine Capital Management LLC 0.00% No change 2,134 $115K
Hilltop National Bank 0.03% — 2,050 $110K
KBC Group NV 0.00% Reduce -24.4% 1,886 $102K
CIBC Private Wealth Group LLC 0.00% Add +1.7% 1,792 $97K
Nisa Investment Advisors, LLC 0.00% No change 1,760 $95K
Ridgewood Investments LLC 0.03% No change 1,350 $73K
GAMMA Investing LLC 0.00% Add +24.9% 1,322 $71K
Mirae Asset Global Investments Co., Ltd. 0.00% Reduce -15.8% 1,271 $68K
Fifth Third Bancorp 0.00% Reduce -3.5% 1,245 $67K
Mark Sheptoff Financial Planning, LLC 0.03% New 1,100 $59K
EverSource Wealth Advisors, LLC 0.00% Add +33.7% 929 $50K
Federated Hermes, Inc. 0.00% New 801 $43K
Aster Capital Management (DIFC) Ltd 0.01% New 784 $42K
GHP Investment Advisors, Inc. 0.00% No change 700 $38K
Signaturefd, LLC 0.00% Add +3.0% 692 $37K
Allworth Financial LP 0.00% Add +13.0% 685 $37K
Jones Financial Companies LLLP 0.00% Add +6.5% 683 $36K
BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% New 642 $35K
Quaker Wealth Management, LLC 0.01% — 644 $35K
Public Employees Retirement System of Ohio 0.00% Reduce -13.6% 636 $34K
Osaic Holdings, Inc. 0.00% Add +53.2% 599 $32K
Barrow Hanley Mewhinney & Strauss LLC 0.00% No change 582 $31K
Arax Advisory Partners 0.00% New 460 $25K
Versant Capital Management, Inc 0.00% No change 432 $23K
Leonteq Securities AG 0.00% No change 410 $22K
AlphaQuest LLC 0.00% No change 401 $22K
Coston, McIsaac & Partners 0.01% No change 396 $21K
Towarzystwo Funduszy Inwestycyjnych Pzu SA 0.01% No change 360 $19K
Danske Bank A/S 0.00% New 300 $16K
Smartleaf Asset Management LLC 0.00% Reduce -36.3% 247 $13K
Bessemer Group Inc. 0.00% Add +36.5% 232 $13K
UMB Bank, n.a. 0.00% Add +4.6% 228 $12K
Twin Peaks Wealth Advisors, LLC 0.00% New 165 $11K
Simplex Trading, LLC 0.00% New 212 $11K
Optiver Holding B.V. 0.00% New 173 $9K
Parkside Financial Bank & Trust 0.00% Add +13.6% 167 $9K
Parallel Advisors, LLC 0.00% No change 164 $9K
Huntington National Bank 0.00% No change 162 $9K
Hillsdale Investment Management Inc. 0.00% No change 150 $8K
MassMutual Private Wealth & Trust, FSB 0.00% Reduce -13.4% 149 $8K
Covestor Ltd 0.00% Add +3775.0% 155 $8K
WPG Advisers, LLC 0.01% Add +111.4% 148 $8K
Brooklyn Investment Group 0.00% Add +143.3% 146 $8K
Hemington Wealth Management 0.00% Add +21.2% 143 $7K
Rothschild Investment LLC 0.00% Add +31.3% 105 $6K
Toth Financial Advisory Corp. 0.00% No change 100 $5K
MAI Capital Management 0.00% New 83 $4K
Fortitude Family Office, LLC 0.00% New 80 $4K
Colonial Trust Co / SC 0.00% Add +10.1% 76 $4K
SBI Securities Co., Ltd. 0.00% Add +89.2% 70 $4K
Private Wealth Management Group, LLC 0.00% No change 56 $3K
Farther Finance Advisors, LLC 0.00% Add +189.5% 55 $3K
Geneos Wealth Management Inc. 0.00% New 49 $3K
Larson Financial Group LLC 0.00% Add +360.0% 46 $2K
Whittier Trust Co. of Nevada Inc. 0.00% No change 45 $2K
JFS Wealth Advisors, LLC 0.00% Add +44.8% 42 $2K
Prestige Wealth Management Group LLC 0.00% No change 39 $2K
Hantz Financial Services, Inc. 0.00% Add +3200.0% 33 $2K
Farmers & Merchants Investments Inc. 0.00% No change 35 $2K
Bare Financial Services, Inc 0.00% Add +106.7% 31 $2K
IFP Advisors, Inc 0.00% Add +24.0% 31 $2K
Physician Wealth Advisors, Inc. 0.00% New 30 $2K
Global Retirement Partners, LLC 0.00% — 30 $2K
Raffa Wealth Management, LLC 0.00% No change 26 $1K
Sachetta, LLC 0.00% No change 20 $1K
Clearstead Trust, LLC 0.00% New 18 $970
Annis Gardner Whiting Capital Advisors, LLC 0.00% New 16 $862
MV Capital Management, Inc. 0.00% No change 14 $755
DiNuzzo Private Wealth, Inc. 0.00% Add +33.3% 12 $647
SouthState Bank Corp 0.00% No change 10 $539
Parkworth Wealth Management, Inc. 0.00% Add +700.0% 8 $431
SJS Investment Consulting Inc. 0.00% Reduce -41.7% 7 $378
HFM Investment Advisors, LLC 0.00% Add +150.0% 5 $269
Abound Wealth Management 0.00% No change 4 $216
Rialto Wealth Management, LLC 0.00% New 4 $216
True Wealth Design, LLC 0.00% No change 3 $162
Essential Partners LLC 0.00% — 3 $162
Bay Harbor Wealth Management, LLC 0.00% No change 3 $161
Caitong International Asset Management Co., Ltd 0.00% New 2 $108
Stephens Consulting, LLC 0.00% Reduce -90.0% 1 $54

"% of holder's portfolio" is MRCY's weight in each manager's 13F, not the share of Mercury Systems Inc. the manager owns.