Jane Street’s Ironwood Pharmaceuticals IRWD Stock Holding History

Jane Street’s Portfolio IRWD Stock Details IRWD Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$66.9K	Sell	15,900 -8,900	-36%	-$34.3K	﹤0.01%	10805
2026 Q1	$87K	Buy	+24,800	New	+$102K	﹤0.01%	10714
2022 Q3	–	Sell	-13,300	Closed	-$153K	–	10051
2022 Q2	$153K	Sell	13,300 -900	-6%	-$10.6K	﹤0.01%	8398
2022 Q1	$179K	Sell	14,200 -9,900	-41%	-$113K	﹤0.01%	9103
2021 Q4	$281K	Sell	24,100 -17,000	-41%	-$209K	﹤0.01%	8297
2021 Q3	$537K	Sell	41,100 -3,400	-8%	-$43.9K	﹤0.01%	7149
2021 Q2	$573K	Sell	44,500 -21,200	-32%	-$243K	﹤0.01%	6985
2021 Q1	$735K	Buy	+65,700	New	+$694K	﹤0.01%	6065
2020 Q4	–	Sell	-27,000	Closed	-$243K	–	7781
2020 Q3	$243K	Buy	+27,000	New	+$268K	﹤0.01%	6173

Other funds holding IRWD

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

Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return

SCM

Sarissa Capital Management Greenwich, Connecticut $178M AUM 118.43% 1-Year Est. Return

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

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Jane Street's IRWD Position: Q2 2026 in Review

Jane Street reduced its Ironwood Pharmaceuticals (IRWD) stake by 79% in Q2 2026, selling an estimated $1.9M and leaving 129,700 shares worth $546K. The position accounts for ﹤0.01% of the portfolio, ranked #7805.

Jane Street first reported a position in IRWD in Q2 2014 and has held it in 36 quarters since. The position peaked at $20.3M in Q1 2023. 212 funds tracked by Wall St. Rank hold IRWD as of Q2 2026.

Jane Street held 129,700 shares of Ironwood Pharmaceuticals worth $546K as of Q2 2026.
Jane Street sold 492,547 Ironwood Pharmaceuticals shares in Q2 2026, an estimated $1.9M.
Ironwood Pharmaceuticals made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #7805 holding.
Jane Street first reported a position in Ironwood Pharmaceuticals in Q2 2014 and has held it in 36 quarters since.
Jane Street's Ironwood Pharmaceuticals position peaked at $20.3M in Q1 2023.
212 funds tracked by Wall St. Rank held Ironwood Pharmaceuticals as of Q2 2026.

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