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Mercury Systems Inc (MRCY)

CUSIP: 589378108 | NYSE | Industrials · Aerospace & Defense | Mid Cap | 1117 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13G/AVanguard Portfolio Management LLC3,038,9575.0%−47,185Sep 30, 202692d ahead of 13F (3,031,459 sh) · +7,498
13G/AVanguard Portfolio Management LLC3,038,957
5.0% of class · Sep 30, 2026−47,185
92d ahead of 13F (3,031,459 sh) · +7,498

Institutional Holders — Q3 2026

Conestoga Capital Advisors, LLC1,190,557
3.0% of portfolio›$98.8M
Dimensional Fund Advisors LP1,174,552
0.0% of portfolio›$97.5M
Allspring Global Investments Holdings, LLC496,387
0.1% of portfolio›$41.7M
Bank of New York Mellon Corp315,327
0.0% of portfolio›$26.2M
Principal Financial Group Inc270,566
0.0% of portfolio›$22.5M
Mutual of America Capital Management LLC193,870
0.2% of portfolio›$16.1M
Swedbank AB173,546
0.0% of portfolio›$14.4M
Agman Capital LLC100,803
5.9% of portfolio›$8.4M
Creative Planning69,264
0.0% of portfolio›$5.7M
Imc-Chicago, LLC56,034
0.0% of portfolio›$4.7M
Moody National Bank Trust Division53,383
0.4% of portfolio›$4.4M
New York State Teachers Retirement System52,511
0.0% of portfolio›$4.4K
Citigroup Inc48,172
0.0% of portfolio›$4.0M
B. Metzler seel. Sohn & Co. AG43,563
0.0% of portfolio›$3.6M
Hennion & Walsh Asset Management, Inc.42,919
0.1% of portfolio›$3.6M
Illinois Municipal Retirement Fund29,433
0.0% of portfolio›$2.4M
Louisiana State Employees Retirement System23,800
0.0% of portfolio›$2.0M
SEB Asset Management AB23,483
0.0% of portfolio›$1.9M
State of Alaska, Department of Revenue20,275
0.0% of portfolio›$1.7K
State of New Jersey Common Pension Fund D18,011
0.0% of portfolio›$1.5M
Calamos Advisors LLC17,866
0.0% of portfolio›$1.5M
Yousif Capital Management, LLC16,808
0.0% of portfolio›$1.4M
Arizona State Retirement System15,218
0.0% of portfolio›$1.3M
Amalgamated Bank14,490
0.0% of portfolio›$1.2K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS13,157
0.0% of portfolio›$1.1M
Oregon Public Employees Retirement Fund12,558
0.0% of portfolio›$1.0M
Wealth Enhancement Advisory Services, LLC10,388
0.0% of portfolio›$551.8K
Corecam Pte. Ltd.10,088
0.3% of portfolio›$837.3K
Mitsubishi UFJ Asset Management Co., Ltd.10,082
0.0% of portfolio›$836.8K
Oppenheimer & Co Inc9,740
0.0% of portfolio›$808.4K
Harel Insurance Investments & Financial Services Ltd.9,680
0.0% of portfolio›$803
Pictet Asset Management Holding SA8,872
0.0% of portfolio›$736.4K
Quadrant Capital Group LLC8,017
0.0% of portfolio›$615.0K
ProShare Advisors LLC7,727
0.0% of portfolio›$641.3K
Guidance Capital, Inc7,098
0.1% of portfolio›$549.2K
Strs Ohio5,700
0.0% of portfolio›$473.1K
Integrity Alliance, Llc.5,600
0.0% of portfolio›$464.8K
Vontobel Holding Ltd.5,439
0.0% of portfolio›$451.4K
Xponance LLC5,332
0.0% of portfolio›$442.6K
Simplex Trading, LLC5,203
0.0% of portfolio›$431.8K
Crossmark Global Holdings, Inc.5,200
0.0% of portfolio›$431.6K
Evergreen Capital Management LLC5,135
0.0% of portfolio›$426.2K
CenterBook Partners LP4,752
0.0% of portfolio›$394.4K
Keenan, LLC4,423
0.3% of portfolio›$367.1K
Greenwood Capital Associates LLC4,387
0.0% of portfolio›$364.1K
Ethic Inc.4,204
0.0% of portfolio›$348.9K
Commonwealth Equity Services, LLC3,789
0.0% of portfolio›$314.5K
HB Wealth Management, LLC3,643
0.0% of portfolio›$302.4K
Swiss Life Asset Management Ltd3,584
0.0% of portfolio›$297.5K
StoneRidge PMG Advisors, LLC3,514
0.0% of portfolio›$292
NorthCrest Asset Manangement, LLC3,361
0.0% of portfolio›$263.9K
Verdence Capital Advisors LLC3,169
0.0% of portfolio›$263.0K
Abel Hall, LLC3,007
0.0% of portfolio›$249.6K
Concurrent Investment Advisors, LLC2,867
0.0% of portfolio›$238.0K
StoneX Group Inc.2,810
0.0% of portfolio›$243.7K
Crestwood Advisors Group, LLC2,787
0.0% of portfolio›$231.3K
Kestra Private Wealth Services, LLC2,656
0.0% of portfolio›$220.4K
Profund Advisors LLC2,588
0.0% of portfolio›$214.8K
Fulcrum Asset Management LLP2,569
0.0% of portfolio›$212.3K
Themes Management Co LLC2,548
0.1% of portfolio›$211.5K
Hilltop National Bank2,510
0.0% of portfolio›$208.3K
J. Safra Sarasin Holding AG2,457
0.0% of portfolio›$203.9K
Premier Fund Managers Ltd2,283
0.0% of portfolio›$189
Gamma Investing LLC2,282
0.0% of portfolio›$189.4K
Nisa Investment Advisors, LLC2,194
0.0% of portfolio›$182.1K
KBC Group NV1,886
0.0% of portfolio›$157
Sterling Capital Management LLC1,861
0.0% of portfolio›$154.5K
Mirae Asset Global Investments Co., Ltd.1,786
0.0% of portfolio›$148.2K
Farther Finance Advisors, LLC1,743
0.0% of portfolio›$144.7K
DekaBank Deutsche Girozentrale1,739
0.0% of portfolio›$144
Signaturefd, LLC1,306
0.0% of portfolio›$108.4K
Pinnacle Wealth Planning Services, Inc.1,268
0.0% of portfolio›$105.2K
Ascentis Wealth Management, LLC935
0.0% of portfolio›$77.6K
EverSource Wealth Advisors, LLC650
0.0% of portfolio›$54.0K
Quaker Wealth Management, LLC644
0.0% of portfolio›$53.5K
Salomon & Ludwin, LLC464
0.0% of portfolio›$38.5K
IFP Advisors, Inc463
0.0% of portfolio›$38.4K
Versant Capital Management, Inc433
0.0% of portfolio›$35.9K
GHP Investment Advisors, Inc.400
0.0% of portfolio›$33.2K
Leonteq Securities AG393
0.0% of portfolio›$32.6K
MassMutual Private Wealth & Trust, FSB260
0.0% of portfolio›$21.6K
Bare Financial Services, Inc247
0.0% of portfolio›$20.5K
SBI Securities Co., Ltd.236
0.0% of portfolio›$19.6K
Parallel Advisors, LLC229
0.0% of portfolio›$19.0K
Lodestone Wealth Management LLC226
0.0% of portfolio›$18.8K
Parkside Financial Bank & Trust212
0.0% of portfolio›$17.6K
Root Financial Partners, LLC171
0.0% of portfolio›$14.2K
Cedar Mountain Advisors, LLC152
0.0% of portfolio›$12.6K
WPG Advisers, LLC133
0.0% of portfolio›$11.0K
Fortitude Family Office, LLC127
0.0% of portfolio›$10.5K
Larson Financial Group LLC111
0.0% of portfolio›$9.2K
Caitong International Asset Management Co., Ltd99
0.0% of portfolio›$8.2K
Hilton Head Capital Partners, LLC94
0.0% of portfolio›$7.8K
Covestor Ltd69
0.0% of portfolio›$6
JFS Wealth Advisors, LLC61
0.0% of portfolio›$5.1K
Private Wealth Management Group, LLC56
0.0% of portfolio›$4.6K
Farmers & Merchants Investments Inc53
0.0% of portfolio›$4.4K
Hurley Capital, LLC45
0.0% of portfolio›$3.7K
Physician Wealth Advisors, Inc.43
0.0% of portfolio›$3.6K
Toth Financial Advisory Corp40
0.0% of portfolio›$3.3K
Armstrong Advisory Group, Inc39
0.0% of portfolio›$3.2K
Mather Group, Llc.38
0.0% of portfolio›$3.2K
Blue Trust, Inc.37
0.0% of portfolio›$3.1K
Rakuten Securities, Inc.31
0.0% of portfolio›$2.6K
Golden State Wealth Management, LLC30
0.0% of portfolio›$2.5K
SJS Investment Consulting Inc.22
0.0% of portfolio›$1.8K
Bell Investment Advisors, Inc22
0.0% of portfolio›$1.8K
Essential Partners LLC18
0.0% of portfolio›$1.5K
Manchester Capital Management LLC16
0.0% of portfolio›$1.3K
Provenance Wealth Advisors, LLC15
0.0% of portfolio›$1.2K
MV Capital Management, Inc.14
0.0% of portfolio›$1.2K
Financial Consulate, Inc14
0.0% of portfolio›$1.2K
Assetmark, Inc12
0.0% of portfolio›$996
DiNuzzo Private Wealth, Inc.11
0.0% of portfolio›$913
Breakwater Investment Management10
0.0% of portfolio›$830
Proathlete Wealth Management LLC8
0.0% of portfolio›$664
Bay Harbor Wealth Management, LLC8
0.0% of portfolio›$664
Signature Equity Partners, LLC6
0.0% of portfolio›$498
Silver Grove Financial Group, Inc.6
0.0% of portfolio›$498
Rossby Financial, LCC6
0.0% of portfolio›$498
Gilpin Wealth Management, LLC5
0.0% of portfolio›$415
Elyxium Wealth, LLC5
0.0% of portfolio›$415
Abound Wealth Management2
0.0% of portfolio›$166
Bear Mountain Capital, Inc.2
0.0% of portfolio›$149
Hughes Financial Services, LLC1
0.0% of portfolio›$82
StyleTurnoverLocationFiled
Conestoga Capital Advisors, LLC
1,190,557$98.8M3.0%CoreLowWayne, PA2026-11-02
Dimensional Fund Advisors LP
1,174,552$97.5M0.0%IndexLowAustin, TX2026-11-04
Allspring Global Investments Holdings, LLC
496,387$41.7M0.1%CoreMediumCharlotte, NC2026-11-04
Bank of New York Mellon Corp
315,327$26.2M0.0%CoreLowNew York, NY2026-11-05
Principal Financial Group Inc
270,566$22.5M0.0%CoreLowDes Moines, IA2026-11-02
Mutual of America Capital Management LLC
193,870$16.1M0.2%IndexLowNew York, NY2026-10-23
Swedbank AB
173,546$14.4M0.0%GrowthLowStockholm, Sweden2026-10-27
Agman Capital LLC
100,803$8.4M5.9%ValueMediumOmaha, NE2026-10-29
Creative Planning
69,264$5.7M0.0%IndexVery LowOverland Park, KS2026-11-02
Imc-Chicago, LLC
56,034$4.7M0.0%GARPVery HighChicago, IL2026-11-05
Moody National Bank Trust Division
53,383$4.4M0.4%CoreMediumGalveston, TX2026-10-06
New York State Teachers Retirement System
52,511$4.4K0.0%CoreVery LowAlbany, NY2026-10-22
Citigroup Inc
48,172$4.0M0.0%CoreMediumNew York, NY2026-11-04
B. Metzler seel. Sohn & Co. AG
43,563$3.6M0.0%GrowthMediumFrankfurt, Hong Kong2026-10-30
Hennion & Walsh Asset Management, Inc.
42,919$3.6M0.1%ValueMediumParsippany, NJ2026-10-13
Illinois Municipal Retirement Fund
29,433$2.4M0.0%CoreMediumOak Brook, IL2026-11-05
Louisiana State Employees Retirement System
23,800$2.0M0.0%IndexLowBaton Rouge, LA2026-10-20
SEB Asset Management AB
23,483$1.9M0.0%CoreN/AStockholm, Sweden2026-11-04
State of Alaska, Department of Revenue
20,275$1.7K0.0%CoreVery LowJuneau, AK2026-10-15
State of New Jersey Common Pension Fund D
18,011$1.5M0.0%CoreLowTrenton, NJ2026-11-05
Calamos Advisors LLC
17,866$1.5M0.0%GrowthMediumNaperville, IL2026-11-02
Yousif Capital Management, LLC
16,808$1.4M0.0%IndexVery LowBloomfield Hills, MI2026-10-22
Arizona State Retirement System
15,218$1.3M0.0%IndexVery LowPhoenix, AZ2026-11-03
Amalgamated Bank
14,490$1.2K0.0%CoreVery LowNew York, NY2026-10-23
Commonwealth of Pennsylvania Public School Empls Retrmt SYS
13,157$1.1M0.0%CoreLowHarrisburg, PA2026-11-03
Oregon Public Employees Retirement Fund
12,558$1.0M0.0%IndexVery LowTigard, OR2026-10-30
Wealth Enhancement Advisory Services, LLC
10,388$551.8K0.0%CoreLowPlymouth, MN2026-10-13
Corecam Pte. Ltd.
10,088$837.3K0.3%ETFMediumSingapore, Turkey2026-10-23
Mitsubishi UFJ Asset Management Co., Ltd.
10,082$836.8K0.0%IndexVery LowTokyo, Mexico2026-11-05
Oppenheimer & Co Inc
9,740$808.4K0.0%CoreLowNew York, NY2026-10-26
Harel Insurance Investments & Financial Services Ltd.
9,680$8030.0%GrowthHighRamat Gan, Luxembourg2026-11-02
Pictet Asset Management Holding SA
8,872$736.4K0.0%GrowthMediumCarouge, Switzerland2026-11-03
Quadrant Capital Group LLC
8,017$615.0K0.0%CoreLowCincinnati, OH2026-10-20
ProShare Advisors LLC
7,727$641.3K0.0%GrowthLowBethesda, MD2026-10-29
Guidance Capital, Inc
7,098$549.2K0.1%ETFMediumLousville, KY2026-11-03
Strs Ohio
5,700$473.1K0.0%CoreMediumColumbus, OH2026-10-30
Integrity Alliance, Llc.
5,600$464.8K0.0%ETFMediumUrbandale, IA2026-10-29
Vontobel Holding Ltd.
5,439$451.4K0.0%CoreMediumZurich, Switzerland2026-10-16
Xponance LLC
5,332$442.6K0.0%IndexVery LowPhiladelphia, PA2026-11-03
Simplex Trading, LLC
5,203$431.8K0.0%CoreVery HighChicago, IL2026-11-04
Crossmark Global Holdings, Inc.
5,200$431.6K0.0%GARPMediumHouston, TX2026-10-21
Evergreen Capital Management LLC
5,135$426.2K0.0%GARPMediumBellevue, WA2026-10-23
CenterBook Partners LP
4,752$394.4K0.0%ValueVery HighGreenwich, CT2026-11-02
Keenan, LLC
4,423$367.1K0.3%ETFLowBoston, MA2026-10-23
Greenwood Capital Associates LLC
4,387$364.1K0.0%CoreMediumGreenwood, SC2026-10-27
Ethic Inc.
4,204$348.9K0.0%CoreLowNew York, NY2026-11-03
Commonwealth Equity Services, LLC
3,789$314.5K0.0%ETFLowWaltham, MA2026-11-02
HB Wealth Management, LLC
3,643$302.4K0.0%IndexVery LowAtlanta, GA2026-10-23
Swiss Life Asset Management Ltd
3,584$297.5K0.0%CoreLowZurich, Switzerland2026-11-03
StoneRidge PMG Advisors, LLC
3,514$2920.0%N/AN/ARadnor, PA2026-11-04
NorthCrest Asset Manangement, LLC
3,361$263.9K0.0%GrowthLowPlymouth, MN2026-10-13
Verdence Capital Advisors LLC
3,169$263.0K0.0%CoreMediumHunt Valley, MD2026-10-26
Abel Hall, LLC
3,007$249.6K0.0%CoreMediumBaton Rouge, LA2026-10-19
Concurrent Investment Advisors, LLC
2,867$238.0K0.0%GrowthMediumTampa, FL2026-10-16
StoneX Group Inc.
2,810$243.7K0.0%ETFMediumNew York, NY2026-11-03
Crestwood Advisors Group, LLC
2,787$231.3K0.0%GrowthLowBoston, MA2026-10-27
Kestra Private Wealth Services, LLC
2,656$220.4K0.0%GrowthLowAustin, TX2026-10-30
Profund Advisors LLC
2,588$214.8K0.0%GrowthLowBethesda, MD2026-10-29
Fulcrum Asset Management LLP
2,569$212.3K0.0%CoreMediumLondon, United Kingdom2026-11-04
Themes Management Co LLC
2,548$211.5K0.1%GARPMediumGreenwich, CT2026-10-29
Hilltop National Bank
2,510$208.3K0.0%CoreLowCasper, WY2026-10-14
J. Safra Sarasin Holding AG
2,457$203.9K0.0%CoreMediumBasel, Switzerland2026-10-26
Premier Fund Managers Ltd
2,283$1890.0%MomentumMediumLondon, United Kingdom2026-11-02
Gamma Investing LLC
2,282$189.4K0.0%IndexVery LowFoster City, CA2026-10-08
Nisa Investment Advisors, LLC
2,194$182.1K0.0%IndexVery LowSt. Louis, MO2026-10-20
KBC Group NV
1,886$1570.0%CoreMediumBrussels, Czech Republic2026-10-22
Sterling Capital Management LLC
1,861$154.5K0.0%GARPMediumCharlotte, NC2026-10-22
Mirae Asset Global Investments Co., Ltd.
1,786$148.2K0.0%GrowthLowSeoul, Malaysia2026-11-03
Farther Finance Advisors, LLC
1,743$144.7K0.0%IndexLowSan Francisco, CA2026-10-08
DekaBank Deutsche Girozentrale
1,739$1440.0%CoreLowFrankfurt, Hong Kong2026-10-27
Signaturefd, LLC
1,306$108.4K0.0%IndexLowAtlanta, GA2026-10-23
Pinnacle Wealth Planning Services, Inc.
1,268$105.2K0.0%GARPLowMansfield, OH2026-10-27
Ascentis Wealth Management, LLC
935$77.6K0.0%Agg GrowthLowDallas, TX2026-11-03
EverSource Wealth Advisors, LLC
650$54.0K0.0%CoreMediumBirmingham, AL2026-11-04
Quaker Wealth Management, LLC
644$53.5K0.0%ETFMediumMoorestown, NJ2026-10-22
Salomon & Ludwin, LLC
464$38.5K0.0%ETFVery LowRichmond, VA2026-10-29
IFP Advisors, Inc
463$38.4K0.0%GrowthLowTampa, FL2026-10-16
Versant Capital Management, Inc
433$35.9K0.0%GARPLowPhoenix, AZ2026-10-02
GHP Investment Advisors, Inc.
400$33.2K0.0%CoreVery LowDenver, CO2026-10-15
Leonteq Securities AG
393$32.6K0.0%CoreHighZurich, Switzerland2026-10-29
MassMutual Private Wealth & Trust, FSB
260$21.6K0.0%CoreLowSpringfield, MA2026-10-05
Bare Financial Services, Inc
247$20.5K0.0%ETFVery LowGap, PA2026-11-04
SBI Securities Co., Ltd.
236$19.6K0.0%Agg GrowthLowTokyo, Mexico2026-10-22
Parallel Advisors, LLC
229$19.0K0.0%IndexLowSan Francisco, CA2026-11-03
Lodestone Wealth Management LLC
226$18.8K0.0%CoreLowSpokane, WA2026-10-14
Parkside Financial Bank & Trust
212$17.6K0.0%CoreVery LowSaint Louis, MO2026-10-27
Root Financial Partners, LLC
171$14.2K0.0%ETFMediumEncinitas, CA2026-10-21
Cedar Mountain Advisors, LLC
152$12.6K0.0%ETFVery LowLake Oswego, OR2026-10-15
WPG Advisers, LLC
133$11.0K0.0%CoreLowBaltimore, MD2026-10-27
Fortitude Family Office, LLC
127$10.5K0.0%ETFMediumScottsdale, AZ2026-10-14
Larson Financial Group LLC
111$9.2K0.0%GrowthLowSt Louis, MO2026-11-05
Caitong International Asset Management Co., Ltd
99$8.2K0.0%GrowthVery HighHong Kong, South Korea2026-10-29
Hilton Head Capital Partners, LLC
94$7.8K0.0%CoreMediumHilton Head Island, SC2026-10-23
Covestor Ltd
69$60.0%ValueHighLondon, United Kingdom2026-10-30
JFS Wealth Advisors, LLC
61$5.1K0.0%ETFVery LowHermitage, PA2026-11-03
Private Wealth Management Group, LLC
56$4.6K0.0%ETFLowPrinceton, NJ2026-10-19
Farmers & Merchants Investments Inc
53$4.4K0.0%CoreVery LowLincoln, NE2026-10-22
Hurley Capital, LLC
45$3.7K0.0%GARPMediumNew York, NY2026-11-05
Physician Wealth Advisors, Inc.
43$3.6K0.0%ETFMediumMidvale, UT2026-10-20
Toth Financial Advisory Corp
40$3.3K0.0%CoreLowLeesburg, VA2026-10-08
Armstrong Advisory Group, Inc
39$3.2K0.0%ETFHighNeedham, MA2026-10-09
Mather Group, Llc.
38$3.2K0.0%ETFMediumChicago, IL2026-10-14
Blue Trust, Inc.
37$3.1K0.0%ETFLowBrentwood, TN2026-10-15
Rakuten Securities, Inc.
31$2.6K0.0%Agg GrowthHighTokyo, Mexico2026-11-02
Golden State Wealth Management, LLC
30$2.5K0.0%ETFMediumSanta Ana, CA2026-11-02
SJS Investment Consulting Inc.
22$1.8K0.0%ETFVery LowSylvania, OH2026-10-26
Bell Investment Advisors, Inc
22$1.8K0.0%ETFVery LowOrinda, CA2026-10-29
Essential Partners LLC
18$1.5K0.0%ValueMediumRancho Santa Fe, CA2026-10-14
Manchester Capital Management LLC
16$1.3K0.0%CoreLowManchester, VT2026-10-22
Provenance Wealth Advisors, LLC
15$1.2K0.0%ETFLowFort Lauderdale, FL2026-10-30
MV Capital Management, Inc.
14$1.2K0.0%ETFLowBethesda, MD2026-10-29
Financial Consulate, Inc
14$1.2K0.0%ETFLowHunt Valley, MD2026-10-23
Assetmark, Inc
12$9960.0%ETFLowConcord, CA2026-10-21
DiNuzzo Private Wealth, Inc.
11$9130.0%ETFLowBeaver, PA2026-10-16
Breakwater Investment Management
10$8300.0%ETFLowSeattle, WA2026-10-20
Proathlete Wealth Management LLC
8$6640.0%ETFVery LowBoca Raton, FL2026-10-15
Bay Harbor Wealth Management, LLC
8$6640.0%ETFMediumHunt Valley, MD2026-11-03
Signature Equity Partners, LLC
6$4980.0%GrowthMediumColumbus, OH2026-10-29
Silver Grove Financial Group, Inc.
6$4980.0%CoreMediumOrchard Park, NY2026-11-05
Rossby Financial, LCC
6$4980.0%ETFMediumMelbourne, FL2026-11-05
Gilpin Wealth Management, LLC
5$4150.0%GrowthLowDenver, CO2026-10-09
Elyxium Wealth, LLC
5$4150.0%GrowthVery LowBeverly Hills, CA2026-10-27
Abound Wealth Management
2$1660.0%ETFVery LowFranklin, TN2026-10-26
Bear Mountain Capital, Inc.
2$1490.0%ETFLowSeattle, WA2026-11-04
Hughes Financial Services, LLC
1$820.0%ETFLowHerndon, VA2026-10-30