Jane Street’s Aldeyra Therapeutics ALDX Stock Holding History

Jane Street’s Portfolio ALDX Stock Details ALDX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$23.2K	Sell	10,900 -54,900	-83%	-$94.4K	﹤0.01%	11164
2026 Q1	$111K	Buy	65,800 +43,500	+195%	+$191K	﹤0.01%	10584
2025 Q4	$116K	Buy	+22,300	New	+$115K	﹤0.01%	10109
2023 Q4	–	Sell	-57,700	Closed	-$385K	–	9128
2023 Q3	$385K	Sell	57,700 -38,600	-40%	-$286K	﹤0.01%	6667
2023 Q2	$808K	Buy	+96,300	New	+$949K	﹤0.01%	5561
2022 Q2	–	Sell	-83,700	Closed	-$372K	–	9562
2022 Q1	$372K	Sell	83,700 -48,500	-37%	-$193K	﹤0.01%	8027
2021 Q4	$529K	Buy	132,200 +117,800	+818%	+$898K	﹤0.01%	7152
2021 Q3	$126K	Sell	14,400 -1,100	-7%	-$10.1K	﹤0.01%	9164
2021 Q2	$176K	Buy	+15,500	New	+$186K	﹤0.01%	8924

Other funds holding ALDX

KCM

Knoll Capital Management Miami, Florida $179M AUM 63.61% 1-Year Est. Return

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

KCM

Kingdon Capital Management New York $976M AUM 66.76% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

6CM

683 Capital Management New York $2.04B AUM 94.26% 1-Year Est. Return

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

Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return

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

Jane Street's ALDX Position: Q2 2026 in Review

Jane Street increased its Aldeyra Therapeutics (ALDX) stake by 42% in Q2 2026, buying an estimated $698K and bringing the position to 1,375,115 shares worth $2.93M. The position accounts for ﹤0.01% of the portfolio, ranked #4556.

Jane Street first reported a position in ALDX in Q3 2017 and has held it in 22 quarters since. 108 funds tracked by Wall St. Rank hold ALDX as of Q2 2026.

Jane Street held 1,375,115 shares of Aldeyra Therapeutics worth $2.93M as of Q2 2026.
Jane Street bought 406,224 Aldeyra Therapeutics shares in Q2 2026, an estimated $698K.
Aldeyra Therapeutics made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #4556 holding.
Jane Street first reported a position in Aldeyra Therapeutics in Q3 2017 and has held it in 22 quarters since.
108 funds tracked by Wall St. Rank held Aldeyra Therapeutics as of Q2 2026.

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