Jane Street’s IGM Biosciences IGMS Stock Holding History

Jane Street’s Portfolio IGMS Stock Details IGMS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2021 Q4	–	Sell	-5,100	Closed	-$335K	–	10412
2021 Q3	$335K	Buy	+5,100	New	+$390K	﹤0.01%	7972
2021 Q2	–	Sell	-3,700	Closed	-$284K	–	10064
2021 Q1	$284K	Buy	3,700 +100	+3%	+$9.1K	﹤0.01%	7775
2020 Q4	$318K	Buy	+3,600	New	+$253K	﹤0.01%	6319

Other funds holding IGMS

Osaic Holdings Scottsdale, Arizona $68.3B AUM 20.5% 1-Year Est. Return

Jane Street's IGMS Position: Q3 2025 in Review

Jane Street sold out of IGM Biosciences (IGMS) in Q3 2025, closing a stake of 180,985 shares — an estimated $203K sold.

Jane Street first reported a position in IGMS in Q2 2020 and held it in 11 quarters. The position peaked at $1.43M in Q3 2021. 1 fund tracked by Wall St. Rank holds IGMS as of Q3 2025.

Jane Street reported no remaining IGM Biosciences position as of Q3 2025 after selling out during the quarter.
Jane Street sold 180,985 IGM Biosciences shares in Q3 2025, an estimated $203K.
Jane Street first reported a position in IGM Biosciences in Q2 2020 and held it in 11 quarters.
Jane Street's IGM Biosciences position peaked at $1.43M in Q3 2021.
1 fund tracked by Wall St. Rank held IGM Biosciences as of Q3 2025.

Based on Jane Street's 13F filing for Q3 2025, filed 14 Nov 2025.