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

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 Q4 2024 → Q1 2025

InstitutionsTotal Value
New Positions40$54.6M
Exits31$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
Needham Investment Management LLC 0.11% Reduce -8.3% 27,500 $1.2M
SummitTX Capital, L.P. 0.05% — 27,148 $1.2M
Corebridge Financial, Inc. 0.01% Reduce -1.9% 27,116 $1.2M
Illinois Municipal Retirement Fund 0.02% Reduce -5.6% 26,872 $1.2M
Natixis Advisors, LLC 0.00% Add +63.7% 26,642 $1.1M
Voya Investment Management LLC 0.00% Add +60.8% 25,440 $1.1M
SG Americas Securities, LLC 0.00% New 24,504 $1.1M
Louisiana State Employees Retirement System 0.02% Reduce -2.5% 23,900 $1.0M
Janus Henderson Group PLC 0.00% No change 24,025 $1.0M
Brevan Howard Capital Management LP 0.03% New 22,650 $976K
Caxton Associates LLP 0.03% — 22,609 $974K
BNP Paribas Financial Markets 0.00% Reduce -34.5% 22,587 $973K
M&T Bank Corp 0.00% Reduce -67.9% 22,440 $967K
FIL Ltd 0.00% New 21,379 $921K
Pathstone Holdings, LLC 0.00% Add +77.7% 20,894 $900K
Ensign Peak Advisors, Inc 0.00% No change 20,002 $862K
Calamos Advisors LLC 0.01% New 19,684 $848K
Teachers Retirement System of the State of Kentucky 0.01% No change 19,640 $846K
Yousif Capital Management, LLC 0.01% Reduce -2.5% 18,843 $812K
Select Equity Group, L.P. 0.00% New 18,551 $799K
Qube Research & Technologies Ltd 0.00% New 17,973 $774K
State of Tennessee, Department of Treasury 0.00% Add +41.5% 17,923 $772K
Altfest L J & Co. Inc. 0.10% Add +4.6% 17,602 $758K
AQR Capital Management 0.00% New 18,138 $755K
Aquatic Capital Management LLC 0.02% Reduce -24.5% 16,848 $726K
Canada Pension Plan Investment Board 0.00% Add +113.0% 16,400 $707K
New York State Common Retirement Fund 0.00% No change 16,257 $701K
Mackenzie Financial Corp. 0.00% New 15,857 $683K
State of Wyoming 0.09% Add +5.2% 15,721 $677K
OmniStar Financial Group, Inc. 0.52% New 15,403 $664K
Envestnet Asset Management Inc. 0.00% Add +56.9% 15,283 $659K
Maryland State Retirement & Pension System 0.02% Reduce -13.1% 14,820 $639K
Arizona State Retirement System 0.00% Reduce -1.1% 14,508 $625K
Amalgamated Bank 0.01% Reduce -3.6% 14,454 $623K
State Board of Administration of Florida Retirement System 0.00% No change 14,269 $615K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% No change 13,986 $603K
PEAK6 LLC 0.02% Reduce -53.8% 13,418 $578K
Legato Capital Management LLC 0.08% New 13,290 $573K
Gabelli Funds LLC 0.00% No change 12,809 $552K
Bank of Montreal 0.00% Add +13.3% 12,449 $536K
Bayesian Capital Management, LP 0.09% New 12,298 $530K
ProShare Advisors LLC 0.00% Reduce -21.9% 12,224 $527K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS 0.00% Add +12.2% 12,140 $523K
Mitsubishi UFJ Asset Management Co., Ltd. 0.00% Add +4.0% 11,763 $507K
Rafferty Asset Management, LLC 0.00% Reduce -9.7% 11,720 $505K
Oregon Public Employees Retirement Fund 0.01% Reduce -2.5% 11,662 $503K
Cibc World Markets Corp. 0.00% Add +137.2% 11,540 $497K
Police & Firemen's Retirement System of New Jersey 0.01% Add +6.2% 11,475 $494K
Keybank National Association 0.00% Reduce -12.6% 10,939 $471K
Future Fund LLC 0.60% New 10,763 $464K
KLP Kapitalforvaltning As 0.00% Reduce -11.7% 10,600 $457K
Glenmede Trust Co. NA 0.00% Add +3.8% 10,562 $455K
Hennion & Walsh Asset Management, Inc. 0.02% Reduce -2.6% 10,467 $451K
Creative Planning 0.00% Add +11.1% 10,170 $438K
Greenwood Capital Associates LLC 0.06% New 10,077 $434K
Yarbrough Capital, LLC 0.02% No change 9,991 $431K
Hunter Perkins Capital Management, LLC 0.10% Reduce -50.2% 9,461 $408K
Squarepoint Ops LLC 0.00% New 9,064 $391K
Holocene Advisors, LP 0.00% Reduce -68.9% 8,100 $349K
Cim Investment Management Inc. 0.08% Reduce -2.3% 7,884 $340K
Quadrant Capital Group LLC 0.01% Add +449.5% 7,687 $331K
Public Employees Retirement Association of Colorado 0.00% No change 7,486 $323K
Teacher Retirement System of Texas 0.00% New 7,409 $319K
Cwm, LLC 0.00% Add +2.7% 7,268 $313K
Moors & Cabot, Inc. 0.02% Reduce -4.1% 6,950 $299K
Fox Run Management, L.L.C. 0.05% New 6,847 $295K
Pictet Asset Management Holding SA 0.00% No change 6,766 $292K
Stifel Financial Corp. 0.00% No change 6,668 $287K
Ieq Capital, LLC 0.00% Add +16.1% 6,652 $287K
Focus Partners Wealth 0.00% Reduce -0.1% 6,608 $285K
Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% New 6,456 $278K
Lombard Odier Asset Management (USA) Corp 0.12% Reduce -30.8% 6,381 $275K
Corient Private Wealth LP 0.00% Reduce -7.8% 6,325 $273K
Harel Insurance Investments & Financial Services Ltd. 0.00% Add +37.8% 6,204 $267K
iSAM Funds (UK) Ltd 0.13% New 6,096 $263K
PNC Financial Services Group, Inc. 0.00% Add +143.2% 5,966 $257K
XTX Topco Ltd 0.01% Reduce -26.9% 5,892 $254K
Johnson Investment Counsel Inc. 0.00% Reduce -12.6% 5,807 $250K
DekaBank Deutsche Girozentrale 0.00% No change 5,826 $247K
Ameritas Investment Partners, Inc. 0.01% No change 5,371 $231K
CIBC Asset Management Inc 0.00% Reduce -2.7% 5,217 $225K
Centaurus Financial, Inc. 0.01% Reduce -1.6% 4,961 $214K
KBC Group NV 0.00% No change 2,496 $108K
US Bancorp \de 0.00% Add +43.0% 2,489 $107K
Peregrine Capital Management LLC 0.00% No change 2,134 $92K
Group One Trading LLC 0.00% Reduce -86.0% 1,793 $77K
Nisa Investment Advisors, LLC 0.00% Add +1.0% 1,760 $76K
CIBC Private Wealth Group LLC 0.00% Reduce -50.1% 1,762 $76K
Nkcfo LLC 0.03% New 1,680 $72K
Mirae Asset Global Investments Co., Ltd. 0.00% Reduce -15.8% 1,509 $65K
Ridgewood Investments LLC 0.03% No change 1,350 $58K
Fifth Third Bancorp 0.00% Add +53.8% 1,290 $56K
GAMMA Investing LLC 0.00% Add +59.6% 1,058 $46K
Tower Research Capital LLC (TRC) 0.00% Reduce -39.8% 1,053 $45K
Sterling Capital Management LLC 0.00% Reduce -45.3% 897 $39K
Public Employees Retirement System of Ohio 0.00% Reduce -4.2% 736 $32K
Allworth Financial LP 0.00% Add +1.3% 606 $30K
GHP Investment Advisors, Inc. 0.00% No change 700 $30K
EverSource Wealth Advisors, LLC 0.00% Add +5.3% 695 $30K
Signaturefd, LLC 0.00% No change 672 $29K
Jones Financial Companies LLLP 0.00% Add +968.3% 641 $27K
Barrow Hanley Mewhinney & Strauss LLC 0.00% No change 582 $25K
Whittier Trust Co. 0.00% Reduce -1.4% 546 $24K
Versant Capital Management, Inc 0.00% Add +644.8% 432 $19K
Leonteq Securities AG 0.00% Add +79.8% 410 $18K
AlphaQuest LLC 0.00% No change 401 $17K
Blue Trust, Inc. 0.00% Add +21.9% 395 $17K
Coston, McIsaac & Partners 0.01% No change 396 $17K
Osaic Holdings, Inc. 0.00% Add +29.9% 391 $17K
Smartleaf Asset Management LLC 0.00% Reduce -30.5% 388 $17K
Towarzystwo Funduszy Inwestycyjnych Pzu SA 0.01% No change 360 $16K
UMB Bank, n.a. 0.00% Add +42.5% 218 $9K
Coldstream Capital Management Inc. 0.00% New 199 $9K
MassMutual Private Wealth & Trust, FSB 0.00% Add +760.0% 172 $7K
Quarry LP 0.00% New 168 $7K
Parallel Advisors, LLC 0.00% No change 164 $7K
Bessemer Group Inc. 0.00% Reduce -4.0% 170 $7K
Huntington National Bank 0.00% Add +1250.0% 162 $7K
Hillsdale Investment Management Inc. 0.00% New 150 $6K
Parkside Financial Bank & Trust 0.00% Add +2350.0% 147 $6K
LRI Investments, LLC 0.00% Reduce -10.8% 141 $6K
Hemington Wealth Management 0.00% Add +43.9% 118 $5K
Lindbrook Capital, LLC 0.00% Add +4.6% 113 $5K
Toth Financial Advisory Corp. 0.00% No change 100 $4K
Rothschild Investment LLC 0.00% Add +60.0% 80 $3K
WPG Advisers, LLC 0.00% New 70 $3K
Colonial Trust Co / SC 0.00% New 69 $3K
Brooklyn Investment Group 0.00% New 60 $3K
Private Wealth Management Group, LLC 0.00% No change 56 $2K
Whittier Trust Co. of Nevada Inc. 0.00% No change 45 $2K
Prestige Wealth Management Group LLC 0.00% No change 39 $2K
SBI Securities Co., Ltd. 0.00% Add +2.8% 37 $2K
Farmers & Merchants Investments Inc. 0.00% No change 35 $2K
JFS Wealth Advisors, LLC 0.00% Add +20.8% 29 $1K
Raffa Wealth Management, LLC 0.00% No change 26 $1K
IFP Advisors, Inc 0.00% No change 25 $1K
Sachetta, LLC 0.00% No change 20 $862
Farther Finance Advisors, LLC 0.00% No change 19 $826
Bare Financial Services, Inc 0.00% New 15 $646
MV Capital Management, Inc. 0.00% No change 14 $604
SJS Investment Consulting Inc. 0.00% Add +33.3% 12 $518
Stephens Consulting, LLC 0.00% New 10 $431
SouthState Bank Corp 0.00% New 10 $431
Larson Financial Group LLC 0.00% Add +25.0% 10 $431
DiNuzzo Private Wealth, Inc. 0.00% Reduce -25.0% 9 $388
Global Financial Private Client, LLC 0.00% Add +166.7% 8 $345
Abound Wealth Management 0.00% Reduce -20.0% 4 $173
True Wealth Design, LLC 0.00% New 3 $130
Bay Harbor Wealth Management, LLC 0.00% New 3 $129
HFM Investment Advisors, LLC 0.00% — 2 $87
Parkworth Wealth Management, Inc. 0.00% No change 1 $43
Hantz Financial Services, Inc. 0.00% New 1 $0
Covestor Ltd 0.00% Reduce -99.8% 4 $0

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