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
2025 Q3	–	Sell	-4,100	Closed	-$276K	–	11377
2025 Q2	$276K	Sell	4,100 -27,800	-87%	-$1.65M	﹤0.01%	8002
2025 Q1	$1.78M	Buy	+31,900	New	+$1.72M	﹤0.01%	4553
2022 Q1	–	Sell	-4,400	Closed	-$233K	–	10729
2021 Q4	$233K	Buy	+4,400	New	+$236K	﹤0.01%	8591
2021 Q3	–	Sell	-3,200	Closed	-$208K	–	10404
2021 Q2	$208K	Sell	3,200 -8,300	-72%	-$526K	﹤0.01%	8762
2021 Q1	$699K	Buy	+11,500	New	+$658K	﹤0.01%	6174

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.