MERCURY SYSTEMS INC (MRCY) — Institutional Holders, Q2 2026
394 institutional investment managers reported a MRCY position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $8.0B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
MRCY in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- SEGALL BRYANT & HAMILLNew · +1,029,491 sh+$125.9M
- FMRAdded · +938,435 sh+$114.8M
- AMERICAN CAPITAL MANAGEMENTNew · +486,064 sh+$59.5M
- BlackRockAdded · +450,577 sh+$55.1M
- FRANKLIN RESOURCESAdded · +393,099 sh+$48.1M
Biggest sellers
- AMERIPRISE FINANCIALTrimmed · -492,601 sh-$60.3M
- STATE STREETTrimmed · -447,429 sh-$54.7M
- Conestoga Capital AdvisorsTrimmed · -431,400 sh-$52.8M
- JENNISON ASSOCIATESTrimmed · -333,220 sh-$40.8M
- CITADEL ADVISORSSold out · -292,866 sh-$35.8M
MRCY 13F holders ranked 1–100 of 394
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BlackRock#1 · 9,370,902 sh | 9,370,902 | $1.1B | 0.02% | +5.1% |
| 2 | JANA Partners Management#2 · 3,958,849 sh | 3,958,849 | $484.3M | 25.46% | -3.6% |
| 3 | STATE STREET#3 · 3,418,290 sh | 3,418,290 | $418.0M | 0.01% | -11.6% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT#4 · 3,031,459 sh | 3,031,459 | $370.8M | 0.02% | +4.1% |
| 5 | Invesco Ltd.#5 · 2,669,450 sh | 2,669,450 | $326.6M | 0.03% | +9.3% |
| 6 | VANGUARD CAPITAL MANAGEMENT#6 · 2,422,629 sh | 2,422,629 | $296.4M | <0.01% | +0.8% |
| 7 | FMR#7 · 1,842,103 sh | 1,842,103 | $225.3M | <0.01% | +103.8% |
| 8 | T. Rowe Price Investment Management#8 · 1,595,711 sh | 1,595,711 | $195.2M | 0.13% | +1.0% |
| 9 | GOLDMAN SACHS GROUP#9 · 1,575,727 sh | 1,575,727 | $192.8M | 0.02% | +31.2% |
| 10 | Conestoga Capital Advisors#10 · 1,487,191 sh | 1,487,191 | $181.9M | 3.96% | -22.5% |
| 11 | GEODE CAPITAL MANAGEMENT#11 · 1,459,574 sh | 1,459,574 | $178.6M | <0.01% | -4.3% |
| 12 | FIRST ADVISORS#12 · 1,298,957 sh | 1,298,957 | $158.9M | 0.09% | +11.9% |
| 13 | PRICE T ROWE ASSOCIATES#13 · 1,285,569 sh | 1,285,569 | $157.3M | 0.02% | +25.0% |
| 14 | DIMENSIONAL FUND ADVISORS#14 · 1,156,682 sh | 1,156,682 | $141.4M | 0.03% | -5.8% |
| 15 | SEGALL BRYANT & HAMILL#15 · 1,029,491 sh | 1,029,491 | $125.9M | 1.49% | New |
| 16 | Fisher Asset Management#16 · 944,069 sh | 944,069 | $115.5M | 0.03% | -3.7% |
| 17 | FRANKLIN RESOURCES#17 · 846,732 sh | 846,732 | $103.6M | 0.02% | +86.7% |
| 18 | Neuberger Berman Group#18 · 841,556 sh | 841,556 | $102.1M | 0.07% | -7.6% |
| 19 | MORGAN STANLEY#19 · 811,565 sh | 811,565 | $99.3M | <0.01% | +20.9% |
| 20 | WELLINGTON MANAGEMENT GROUP LLP#20 · 775,502 sh | 775,502 | $94.9M | 0.02% | +2.6% |
| 21 | VAN ECK ASSOCIATES#21 · 762,994 sh | 762,994 | $93.3M | 0.06% | -10.4% |
| 22 | RAYMOND JAMES FINANCIAL#22 · 748,808 sh | 748,808 | $91.6M | 0.02% | -5.7% |
| 23 | MIRAE ASSET GLOBAL ETFS Ltd.#23 · 715,977 sh | 715,977 | $87.6M | 0.10% | -16.7% |
| 24 | LOOMIS SAYLES & L P#24 · 681,142 sh | 681,142 | $83.3M | 0.10% | +5.5% |
| 25 | AMERICAN CENTURY COMPANIES#25 · 664,960 sh | 664,960 | $81.3M | 0.04% | +14.1% |
| 26 | LORD, ABBETT#26 · 661,714 sh | 661,714 | $80.9M | 0.23% | +3.0% |
| 27 | EMERALD ADVISERS#27 · 638,682 sh | 638,682 | $78.1M | 1.84% | +7.3% |
| 28 | CHARLES SCHWAB INVESTMENT MANAGEMENT#28 · 627,581 sh | 627,581 | $76.8M | 0.01% | -1.3% |
| 29 | BAMCO#29 · 606,919 sh | 606,919 | $74.2M | 0.11% | -5.9% |
| 30 | NORTHERN#30 · 597,751 sh | 597,751 | $73.1M | <0.01% | +9.1% |
| 31 | KENNEDY CAPITAL MANAGEMENT#31 · 591,802 sh | 591,802 | $72.4M | 1.28% | +0.4% |
| 32 | SNYDER CAPITAL MANAGEMENT L P#32 · 566,155 sh | 566,155 | $69.3M | 1.20% | -2.5% |
| 33 | AMERIPRISE FINANCIAL#33 · 499,207 sh | 499,207 | $61.1M | 0.01% | -49.7% |
| 34 | DRIEHAUS CAPITAL MANAGEMENT#34 · 487,921 sh | 487,921 | $59.7M | 0.35% | +65.6% |
| 35 | AMERICAN CAPITAL MANAGEMENT#35 · 486,064 sh | 486,064 | $59.5M | 2.67% | New |
| 36 | Allspring Global Investments#36 · 474,866 sh | 474,866 | $58.4M | 0.09% | -17.2% |
| 37 | BESSEMER GROUP#37 · 456,829 sh | 456,829 | $55.9M | 0.08% | +1.6% |
| 38 | EMERALD MUTUAL FUND ADVISERS#38 · 412,354 sh | 412,354 | $50.4M | 1.77% | +9.8% |
| 39 | VOYA INVESTMENT MANAGEMENT#39 · 410,076 sh | 410,076 | $50.2M | 0.04% | -32.7% |
| 40 | ROYAL BANK OF CANADA#40 · 394,081 sh | 394,081 | $48.2M | <0.01% | -26.0% |
| 41 | OBERWEIS ASSET MANAGEMENT#41 · 392,723 sh | 392,723 | $48.0M | 0.99% | +0.4% |
| 42 | VANGUARD FIDUCIARY#42 · 382,819 sh | 382,819 | $46.8M | 0.01% | +9.6% |
| 43 | WILLIAM BLAIR INVESTMENT MANAGEMENT#43 · 379,732 sh | 379,732 | $46.5M | 0.14% | +16.0% |
| 44 | Artisan Partners Limited Partnership#44 · 372,818 sh | 372,818 | $45.6M | 0.07% | +5.2% |
| 45 | JENNISON ASSOCIATES#45 · 354,894 sh | 354,894 | $43.4M | 0.03% | -48.4% |
| 46 | Bank of New York Mellon#46 · 314,217 sh | 314,217 | $38.4M | <0.01% | -0.1% |
| 47 | SILVERCREST ASSET MANAGEMENT GROUP#47 · 285,581 sh | 285,581 | $34.9M | 0.23% | -7.9% |
| 48 | UBS Group AG#48 · 274,799 sh | 274,799 | $33.6M | <0.01% | +17.9% |
| 49 | SEI INVESTMENTS#49 · 261,712 sh | 261,712 | $32.0M | 0.03% | -29.5% |
| 50 | PRINCIPAL FINANCIAL GROUP#50 · 258,561 sh | 258,561 | $31.6M | 0.02% | +0.6% |
| 51 | Swedbank AB#51 · 244,299 sh | 244,299 | $29.9M | 0.03% | +342.1% |
| 52 | Aristotle Capital Boston#52 · 244,228 sh | 244,228 | $29.9M | 2.00% | -8.3% |
| 53 | ROYCE & ASSOCIATES#53 · 238,327 sh | 238,327 | $29.2M | 0.23% | +8.3% |
| 54 | KING LUTHER CAPITAL MANAGEMENT#54 · 228,825 sh | 228,825 | $28.0M | 0.11% | +8.9% |
| 55 | BANK OF AMERICA#55 · 223,533 sh | 223,533 | $27.3M | <0.01% | -24.2% |
| 56 | FIFTH THIRD BANCORP#56 · 222,392 sh | 222,392 | $27.2M | 0.04% | -16.7% |
| 57 | THRIVENT FINANCIAL FOR LUTHERANS#57 · 207,034 sh | 207,034 | $25.3M | 0.04% | +48.0% |
| 58 | AXIOM INVESTORS#58 · 204,433 sh | 204,433 | $25.0M | 0.22% | -3.1% |
| 59 | MUTUAL OF AMERICA CAPITAL MANAGEMENT#59 · 200,867 sh | 200,867 | $24.6M | — | -5.1% |
| 60 | WCM INVESTMENT MANAGEMENT#60 · 219,320 sh | 219,320 | $24.2M | 0.04% | 0.0% |
| 61 | VICTORY CAPITAL MANAGEMENT#61 · 193,068 sh | 193,068 | $23.6M | 0.01% | -14.4% |
| 62 | Nuveen#62 · 186,625 sh | 186,625 | $22.8M | <0.01% | -19.5% |
| 63 | PUBLIC SECTOR PENSION INVESTMENT BOARD#63 · 181,537 sh | 181,537 | $22.2M | 0.06% | -3.9% |
| 64 | JPMORGAN CHASE#64 · 193,475 sh | 193,475 | $21.6M | <0.01% | -22.0% |
| 65 | MetLife Investment Management#65 · 173,537 sh | 173,537 | $21.2M | 0.10% | -41.3% |
| 66 | Select Equity Group, L.P.#66 · 165,257 sh | 165,257 | $20.2M | 0.10% | +98.0% |
| 67 | BNP PARIBAS FINANCIAL MARKETS#67 · 158,224 sh | 158,224 | $19.4M | <0.01% | +1.8% |
| 68 | DEUTSCHE BANK AG\#68 · 142,678 sh | 142,678 | $17.5M | <0.01% | +11.8% |
| 69 | NOMURA ASSET MANAGEMENT INTERNATIONAL#69 · 142,027 sh | 142,027 | $17.4M | 0.03% | -50.8% |
| 70 | WELLS FARGO & COMPANY#70 · 136,983 sh | 136,983 | $16.8M | <0.01% | +10.7% |
| 71 | PEREGRINE CAPITAL MANAGEMENT#71 · 135,071 sh | 135,071 | $16.5M | 0.54% | -0.8% |
| 72 | NEW YORK STATE COMMON RETIREMENT FUND#72 · 133,229 sh | 133,229 | $16.3M | 0.02% | -31.2% |
| 73 | RHUMBLINE ADVISERS#73 · 127,926 sh | 127,926 | $15.6M | 0.01% | -11.6% |
| 74 | Legal & General Group Plc#74 · 126,258 sh | 126,258 | $15.4M | <0.01% | -16.7% |
| 75 | Vident Advisory#75 · 123,337 sh | 123,337 | $15.1M | 0.11% | -3.7% |
| 76 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#76 · 122,585 sh | 122,585 | $15.0M | <0.01% | +5.5% |
| 77 | JANE STREET GROUP#77 · 115,338 sh | 115,338 | $14.1M | <0.01% | New |
| 78 | DF DENT#78 · 113,611 sh | 113,611 | $13.9M | 0.26% | New |
| 79 | Man Group plc#79 · 110,597 sh | 110,597 | $13.5M | 0.02% | -23.6% |
| 80 | Swiss National Bank#80 · 108,400 sh | 108,400 | $13.3M | <0.01% | +1.4% |
| 81 | AGMAN CAPITAL#81 · 102,403 sh | 102,403 | $12.5M | 7.90% | -5.7% |
| 82 | Heights Point Management#82 · 100,375 sh | 100,375 | $12.3M | 9.77% | -17.7% |
| 83 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT#83 · 98,122 sh | 98,122 | $12.0M | 0.21% | New |
| 84 | Russell Investments Group, Ltd.#84 · 93,881 sh | 93,881 | $11.5M | 0.01% | -14.9% |
| 85 | Freshford Capital Management#85 · 93,761 sh | 93,761 | $11.5M | 3.92% | -39.1% |
| 86 | Penserra Capital Management#86 · 80,559 sh | 80,559 | $9.9M | 0.08% | +17.2% |
| 87 | BLAIR WILLIAM#87 · 77,712 sh | 77,712 | $9.5M | 0.02% | -1.4% |
| 88 | Quantinno Capital Management#88 · 76,112 sh | 76,112 | $9.3M | 0.01% | +15.4% |
| 89 | TWO SIGMA INVESTMENTS#89 · 71,861 sh | 71,861 | $8.8M | <0.01% | -55.7% |
| 90 | STATE OF WISCONSIN INVESTMENT BOARD#90 · 67,350 sh | 67,350 | $8.2M | 0.02% | -12.0% |
| 91 | NORDEA INVESTMENT MANAGEMENT AB#91 · 65,670 sh | 65,670 | $7.6M | <0.01% | +2.0% |
| 92 | D. E. Shaw#92 · 61,830 sh | 61,830 | $7.6M | <0.01% | +12.6% |
| 93 | DEEPWATER ASSET MANAGEMENT#93 · 61,166 sh | 61,166 | $7.5M | 3.40% | +8.0% |
| 94 | 13D Management#94 · 60,462 sh | 60,462 | $7.4M | 10.37% | 0.0% |
| 95 | Cerity Partners#95 · 60,446 sh | 60,446 | $7.4M | <0.01% | -0.5% |
| 96 | PRUDENTIAL FINANCIAL#96 · 55,166 sh | 55,166 | $6.7M | <0.01% | +1.8% |
| 97 | Pier Capital#97 · 55,104 sh | 55,104 | $6.7M | 0.89% | -1.6% |
| 98 | BARCLAYS PLC#98 · 54,495 sh | 54,495 | $6.7M | <0.01% | -5.8% |
| 99 | Candelo Capital Management#99 · 54,060 sh | 54,060 | $6.6M | 4.08% | -10.6% |
| 100 | NEW YORK STATE TEACHERS RETIREMENT SYSTEM#100 · 52,511 sh | 52,511 | $6.4M | — | +3.2% |
Funds that sold out of MRCY in Q2 2026 (43)
Held MRCY at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| CITADEL ADVISORS292,866 sh | 292,866 | $21.4M |
| Penn Capital Management Company127,789 sh | 127,789 | $9.3M |
| Qube Research & Technologies Ltd111,190 sh | 111,190 | $8.1M |
| ExodusPoint Capital Management39,224 sh | 39,224 | $2.9M |
| Bouvel Investment Partners32,751 sh | 32,751 | $2.4M |
| Freemont Management S.A.31,700 sh | 31,700 | $2.3M |
| CASTLEARK MANAGEMENT25,048 sh | 25,048 | $1.8M |
| GREAT LAKES ADVISORS21,595 sh | 21,595 | $1.6M |
| Squarepoint Ops21,571 sh | 21,571 | $1.6M |
| COOKSON PEIRCE17,309 sh | 17,309 | $1.3M |
| TWO SIGMA SECURITIES11,950 sh | 11,950 | $871.3K |
| Virtu Financial9,420 sh | 9,420 | $687.0K |
| Cinctive Capital Management6,615 sh | 6,615 | $482.3K |
| IMC-Chicago5,422 sh | 5,422 | $395.3K |
| Bridgefront Capital4,914 sh | 4,914 | $358.3K |
| CAPSTONE INVESTMENT ADVISORS4,516 sh | 4,516 | $329.3K |
| Alamea Verwaltungs GmbH4,354 sh | 4,354 | $317.4K |
| Intrua Financial4,017 sh | 4,017 | $292.9K |
| Blackstone3,799 sh | 3,799 | $277.0K |
| Y-Intercept (Hong Kong) Ltd3,213 sh | 3,213 | $234.3K |
| Blueshift Asset Management3,104 sh | 3,104 | $226.3K |
| WINTON GROUP Ltd3,057 sh | 3,057 | $222.9K |
| Mariner2,993 sh | 2,993 | $218.2K |
| Engineers Gate Manager2,980 sh | 2,980 | $217.3K |
| Abacus Planning Group2,904 sh | 2,904 | $211.7K |
| NATIXIS2,814 sh | 2,814 | $205.2K |
| Quarry740 sh | 740 | $54.0K |
| Walleye Trading635 sh | 635 | $46.3K |
| Optiver Holding B.V.331 sh | 331 | $24.1K |
| GROUP ONE TRADING, L.P.303 sh | 303 | $22.1K |
| HM PAYSON200 sh | 200 | $14.6K |
| Root Financial Partners192 sh | 192 | $14.0K |
| Matrix135 sh | 135 | $10.0K |
| Ancora Advisors135 sh | 135 | $9.8K |
| Sound Income Strategies110 sh | 110 | $8.2K |
| TWIN PEAKS WEALTH ADVISORS108 sh | 108 | $7.9K |
| MAI Capital Management49 sh | 49 | $3.6K |
| Annis Gardner Whiting Capital Advisors31 sh | 31 | $2.3K |
| Wall Street Financial Group11 sh | 11 | $802.00 |
| Rossby Financial, LCC7 sh | 7 | $523.00 |
| Vermillion Wealth Management3 sh | 3 | $219.00 |
| True Wealth Design2 sh | 2 | $146.00 |
| Advisory Services Network1 sh | 1 | $73.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.