13F Insight
DOSSIER · 13F Holders · Q2 2026Technology · Electronic Components & Accessories
MRCY

MERCURY SYS INC

411 institutions still hold MERCURY SYS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 589378108·Electronic Components & Accessories·411 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$4.8B
visible holders
Holders
411
filers reporting
Concentration
23.95%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

411 institutions reported MRCY in Q2 2026. BlackRock, Inc. leads at 24.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$1.1B9.4M0.02%Q2 202602
STATE STREET CORP
CIK 0000093751
$418M3.4M0.01%Q2 202603
Vanguard Portfolio Management
CIK 0002100121· Index
$371M3.0M0.02%Q2 202604
Invesco Ltd.
CIK 0000914208
$327M2.7M0.03%Q2 202605
JANA Partners Management, LP
CIK 0001998597
$299M4.1M17.96%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$296M2.4M0.01%Q2 202607
FMR LLC
CIK 0000315066
$225M1.8M0.01%Q2 202608
GOLDMAN SACHS GROUP INC
CIK 0000886982
$193M1.6M0.02%Q2 202609
Conestoga Capital Advisors, LLC
CIK 0001163744
$182M1.5M3.96%Q2 202610
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$179M1.5M0.01%Q2 202611
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$159M1.3M0.09%Q2 202612
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$141M1.2M0.03%Q2 202613
SEGALL BRYANT & HAMILL, LLC
CIK 0001006378
$126M1.0M1.49%Q2 202614
Fisher Asset Management, LLC
CIK 0000850529
$115M944K0.03%Q2 202615
T. Rowe Price Investment Management, Inc.
CIK 0001897612
$115M1.6M0.08%Q1 202616
FRANKLIN RESOURCES INC
CIK 0000038777
$104M847K0.02%Q2 202617
Neuberger Berman Group LLC
CIK 0001465109
$102M842K0.07%Q2 202618
MORGAN STANLEY
CIK 0000895421
$99M812K0.01%Q2 202619
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$95M776K0.02%Q2 202620
VAN ECK ASSOCIATES CORP
CIK 0000869178
$93M763K0.06%Q2 2026
Page 1 of 21
391 more holders available. Log in →
Insiders at MERCURY SYS INC
Ballhaus William L →Kupinsky Stuart →Ratner Steven →Farnsworth David E. →Munro Douglas →Nearhos Barry R →Lance Howard L →Jana Partners Management, Lp →