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 Q2	$557K	Sell	7,900 -7,700	-49%	-$516K	﹤0.01%	7744
2026 Q1	$1.03M	Buy	15,600 +3,600	+30%	+$248K	﹤0.01%	6429
2025 Q4	$841K	Buy	+12,000	New	+$884K	﹤0.01%	6499
2024 Q1	–	Sell	-48,750	Closed	-$2.3M	–	10188
2023 Q4	$2.3M	Buy	+48,750	New	+$2.22M	﹤0.01%	4090
2022 Q3	–	Sell	-4,800	Closed	-$218K	–	10578
2022 Q2	$218K	Buy	+4,800	New	+$218K	﹤0.01%	8076
2021 Q3	–	Sell	-32,400	Closed	-$1.07M	–	10840
2021 Q2	$1.07M	Buy	32,400 +21,375	+194%	+$740K	﹤0.01%	5684
2021 Q1	$369K	Sell	11,025 -9,450	-46%	-$291K	﹤0.01%	7361
2020 Q4	$604K	Buy	+20,475	New	+$590K	﹤0.01%	5452
2020 Q3	–	Sell	-13,275	Closed	-$338K	–	8024
2020 Q2	$338K	Buy	+13,275	New	+$326K	﹤0.01%	5654

Other funds holding WRB

MSI

Mitsui Sumitomo Insurance Tokyo, Japan $4.15B AUM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Kayne Anderson Rudnick Investment Management Los Angeles, California $32.2B AUM 10.98% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Jane Street's WRB Position: Q2 2026 in Review

Jane Street reduced its W.R. Berkley (WRB) stake by 14% in Q2 2026, selling an estimated $9.28M and leaving 875,704 shares worth $61.8M. The position accounts for 0.01% of the portfolio, ranked #1251.

Jane Street first reported a position in WRB in Q2 2013 and has held it in 34 quarters since. The position peaked at $67.2M in Q1 2026. 952 funds tracked by Wall St. Rank hold WRB as of Q2 2026.

Jane Street held 875,704 shares of W.R. Berkley worth $61.8M as of Q2 2026.
Jane Street sold 138,431 W.R. Berkley shares in Q2 2026, an estimated $9.28M.
W.R. Berkley made up 0.01% of Jane Street's portfolio in Q2 2026, its #1251 holding.
Jane Street first reported a position in W.R. Berkley in Q2 2013 and has held it in 34 quarters since.
Jane Street's W.R. Berkley position peaked at $67.2M in Q1 2026.
952 funds tracked by Wall St. Rank held W.R. Berkley as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.