13F Insight
DOSSIER · 13F Holders · Q1 2026Financial Services · Fire, Marine & Casualty InsuranceDefensive growthQuality
MCY

MERCURY GENL CORP NEW

324 institutions still hold MERCURY GENL CORP NEW as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 589400100·Fire, Marine & Casualty Insurance·324 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 5.1%
vs prior quarter
13F value held
$1.7B
68.0% inst. owned
of float
Holders
324
-6 QoQ
filers reporting
Activity
+36 / −76
+873 added · −765 reduced
this quarter
Concentration
21.86%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

324 institutions reported MCY in Q1 2026. BlackRock, Inc. leads at 21.9% of the visible book. -6 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$381M4.3M0.01%Q1 202602
Rubric Capital Management LP
CIK 0001687509
$193M2.1M2.31%Q4 202503
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$189M2.1M0.04%Q1 202604
Vanguard Portfolio Management
CIK 0002100121
$151M1.7M0.01%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$108M1.2M0.00%Q1 202606
STATE STREET CORP
CIK 0000093751
$97M1.1M0.00%Q1 202607
DG Capital Management, LLC
CIK 0001512716
$84M949K25.63%Q1 202608
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$73M824K0.11%Q1 202609
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$72M813K0.04%Q1 202610
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$66M754K0.00%Q1 202611
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$51M575K0.03%Q1 202612
Invesco Ltd.
CIK 0000914208
$50M573K0.01%Q1 202613
MORGAN STANLEY
CIK 0000895421
$33M378K0.00%Q1 202614
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$31M357K0.00%Q1 202615
JACOBS LEVY EQUITY MANAGEMENT, INC
CIK 0000884414
$31M353K0.13%Q1 202616
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$31M351K0.01%Q1 202617
UBS Group AG
CIK 0001610520
$27M307K0.00%Q1 202618
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$25M289K0.02%Q1 202619
NORTHERN TRUST CORP
CIK 0000073124· Index
$24M270K0.00%Q1 202620
Philosophy Capital Management LLC
CIK 0001869199
$23M257K1.39%Q1 2026
Page 1 of 17
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