Jane Street’s Mirum Pharmaceuticals MIRM Stock Holding History

Jane Street’s Portfolio MIRM Stock Details MIRM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$591K	Buy	6,400 +2,800	+78%	+$263K	﹤0.01%	7657
2025 Q4	$284K	Sell	3,600 -6,500	-64%	-$467K	﹤0.01%	8959
2025 Q3	$740K	Buy	+10,100	New	+$642K	﹤0.01%	6967
2024 Q1	–	Sell	-83,600	Closed	-$2.47M	–	9743
2023 Q4	$2.47M	Buy	83,600 +73,400	+720%	+$2.22M	﹤0.01%	3955
2023 Q3	$322K	Buy	+10,200	New	+$279K	﹤0.01%	6960
2023 Q2	–	Sell	-407,000	Closed	-$9.78M	–	9228
2023 Q1	$9.78M	Buy	+407,000	New	+$9.28M	﹤0.01%	1665

Other funds holding MIRM

FLSM

Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

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

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

EAM

Eventide Asset Management Boston, Massachusetts $6.05B AUM 76.64% 1-Year Est. Return

Jane Street's MIRM Position: Q4 2025 in Review

Jane Street sold out of Mirum Pharmaceuticals (MIRM) in Q4 2025, closing a stake of 254,485 shares — an estimated $18.3M sold.

Jane Street first reported a position in MIRM in Q3 2021 and held it in 14 quarters. The position peaked at $18.7M in Q3 2025. 281 funds tracked by Wall St. Rank hold MIRM as of Q4 2025.

Jane Street reported no remaining Mirum Pharmaceuticals position as of Q4 2025 after selling out during the quarter.
Jane Street sold 254,485 Mirum Pharmaceuticals shares in Q4 2025, an estimated $18.3M.
Jane Street first reported a position in Mirum Pharmaceuticals in Q3 2021 and held it in 14 quarters.
Jane Street's Mirum Pharmaceuticals position peaked at $18.7M in Q3 2025.
281 funds tracked by Wall St. Rank held Mirum Pharmaceuticals as of Q4 2025.

Based on Jane Street's 13F filing for Q4 2025, filed 12 Feb 2026.