13F Insight
DOSSIER · 13F Holders · Q4 2025Inflation hedgeYield
JRVR

James River Group Holdi

122 institutions still hold James River Group Holdi as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 46990A102·122 13F holders·last filed Dec 31, 2025
Market cap
—
▲ 0.6%
vs prior quarter
13F value held
$145M
59.0% inst. owned
of float
Holders
122
+105 QoQ
filers reporting
Activity
+8 / −49
+766 added · −707 reduced
this quarter
Concentration
20.13%
Zimmer Partners, LP #1
top holder share
AI Holders Summary · Q4 2025

122 institutions reported JRVR in Q4 2025. Zimmer Partners, LP leads at 20.1% of the visible book. +105 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Zimmer Partners, LP
CIK 0001565854
$29M4.6M0.77%Q4 202502
BlackRock, Inc.
CIK 0002012383
$20M3.1M0.00%Q1 202603
CONTINENTAL GENERAL INSURANCE CO
CIK 0000024046
$16M2.5M2.29%Q1 202604
DONALD SMITH & CO., INC.
CIK 0000814375
$11M1.8M0.21%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$11M1.7M0.00%Q1 202606
RBF Capital, LLC
CIK 0001134621
$7M1.1M0.35%Q1 202607
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$6M1.0M0.00%Q1 202608
Boston Partners
CIK 0001386060
$5M847K0.01%Q1 202609
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$5M845K0.00%Q1 202610
STATE STREET CORP
CIK 0000093751
$5M826K0.00%Q1 202611
DISCOVERY CAPITAL MANAGEMENT, LLC / CT
CIK 0001389507
$5M819K0.27%Q1 202612
MORGAN STANLEY
CIK 0000895421
$4M575K0.00%Q1 202613
KENNEDY CAPITAL MANAGEMENT LLC
CIK 0000884589
$3M502K0.07%Q1 202614
Hillsdale Investment Management Inc.
CIK 0001368465
$3M449K0.08%Q1 202615
D. E. Shaw & Co., Inc.
CIK 0001009207
$3M427K0.00%Q4 202516
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$2M364K0.00%Q1 202617
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$2M354K0.00%Q1 202618
JACOBS LEVY EQUITY MANAGEMENT, INC
CIK 0000884414
$2M350K0.01%Q1 202619
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$2M344K0.00%Q1 202620
Bronte Capital Management Pty Ltd.
CIK 0001471085
$2M339K0.21%Q1 2026
Page 1 of 7
102 more holders available. Log in →