Jane Street’s Mercury Insurance MCY Stock Holding History

Jane Street’s Portfolio MCY Stock Details MCY Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.07M	Buy	12,100 +3,600	+42%	+$322K	﹤0.01%	6357
2025 Q4	$800K	Sell	8,500 -7,600	-47%	-$659K	﹤0.01%	6614
2025 Q3	$1.36M	Sell	16,100 -700	-4%	-$51.7K	﹤0.01%	5667
2025 Q2	$1.13M	Sell	16,800 -178,100	-91%	-$10.6M	﹤0.01%	5377
2025 Q1	$10.9M	Buy	+194,900	New	+$10.5M	﹤0.01%	1883
2023 Q2	–	Sell	-6,500	Closed	-$206K	–	9216
2023 Q1	$206K	Buy	+6,500	New	+$222K	﹤0.01%	7805
2022 Q2	–	Sell	-12,700	Closed	-$699K	–	10401
2022 Q1	$699K	Sell	12,700 -2,200	-15%	-$119K	﹤0.01%	6852
2021 Q4	$791K	Buy	14,900 +10,900	+273%	+$585K	﹤0.01%	6383
2021 Q3	$223K	Sell	4,000 -1,400	-26%	-$83.6K	﹤0.01%	8695
2021 Q2	$351K	Buy	+5,400	New	+$342K	﹤0.01%	7893

Other funds holding MCY

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

RCMNY

Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

DCM

DG Capital Management New York $326M AUM 39.67% 1-Year Est. Return

Jane Street's MCY Position: Q1 2026 in Review

Jane Street increased its Mercury Insurance (MCY) stake by 26% in Q1 2026, buying an estimated $1.96M and bringing the position to 107,700 shares worth $9.49M. The position accounts for ﹤0.01% of the portfolio, ranked #2606.

Jane Street first reported a position in MCY in Q2 2013 and has held it in 28 quarters since. 305 funds tracked by Wall St. Rank hold MCY as of Q1 2026.

Jane Street held 107,700 shares of Mercury Insurance worth $9.49M as of Q1 2026.
Jane Street bought 21,970 Mercury Insurance shares in Q1 2026, an estimated $1.96M.
Mercury Insurance made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #2606 holding.
Jane Street first reported a position in Mercury Insurance in Q2 2013 and has held it in 28 quarters since.
305 funds tracked by Wall St. Rank held Mercury Insurance as of Q1 2026.

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