Jane Street
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Jane Street’s W.R. Berkley WRB Stock Holding History

Jane Street’s Portfolio WRB Stock Details WRB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$5.3M Buy
80,000
+56,500
+240% +$3.89M ﹤0.01% 3423
2025
Q4 		$1.65M Sell
23,500
-69,600
-75% -$5.13M ﹤0.01% 5185
2025
Q3 		$7.13M Buy
93,100
+85,900
+1,193% +$6.12M ﹤0.01% 2890
2025
Q2 		$529K Hold
7,200
– – ﹤0.01% 6810
2025
Q1 		$512K Buy
7,200
+600
+9% +$36.8K ﹤0.01% 6815
2024
Q4 		$386K Sell
6,600
-45,350
-87% -$2.72M ﹤0.01% 7293
2024
Q3 		$2.95M Sell
51,950
-70,450
-58% -$3.96M ﹤0.01% 3747
2024
Q2 		$6.41M Buy
122,400
+112,200
+1,100% +$6.01M ﹤0.01% 2618
2024
Q1 		$601K Sell
10,200
-172,200
-94% -$9.31M ﹤0.01% 6330
2023
Q4 		$8.6M Buy
182,400
+160,050
+716% +$7.3M ﹤0.01% 2132
2023
Q3 		$946K Buy
22,350
+10,200
+84% +$423K ﹤0.01% 5261
2023
Q2 		$482K Buy
+12,150
New +$478K ﹤0.01% 6371
2023
Q1 		– Sell
-46,200
Closed -$2.24M – 10041
2022
Q4 		$2.24M Buy
46,200
+31,350
+211% +$1.51M ﹤0.01% 3693
2022
Q3 		$639K Buy
14,850
+3,600
+32% +$156K ﹤0.01% 6228
2022
Q2 		$512K Sell
11,250
-12,300
-52% -$559K ﹤0.01% 6697
2022
Q1 		$1.04M Sell
23,550
-3,675
-13% -$147K ﹤0.01% 6040
2021
Q4 		$997K Buy
+27,225
New +$965K ﹤0.01% 5906

Other funds holding WRB

MSI
Mitsui Sumitomo Insurance Tokyo, Japan $3.9B AUM
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Jane Street's WRB Position: Q1 2026 in Review

Jane Street increased its W.R. Berkley (WRB) stake by 5,849% in Q1 2026, buying an estimated $68.7M and bringing the position to 1,014,135 shares worth $67.2M. The position accounts for 0.01% of the portfolio, ranked #872.

Jane Street first reported a position in WRB in Q2 2013 and has held it in 33 quarters since. 921 funds tracked by Wall St. Rank hold WRB as of Q1 2026.

  • Jane Street held 1,014,135 shares of W.R. Berkley worth $67.2M as of Q1 2026.
  • Jane Street bought 997,088 W.R. Berkley shares in Q1 2026, an estimated $68.7M.
  • W.R. Berkley made up 0.01% of Jane Street's portfolio in Q1 2026, its #872 holding.
  • Jane Street first reported a position in W.R. Berkley in Q2 2013 and has held it in 33 quarters since.
  • 921 funds tracked by Wall St. Rank held W.R. Berkley as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.