Two Sigma Securities’s Aldeyra Therapeutics ALDX Stock Holding History

Two Sigma Securities’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	$69.9K	Buy	+32,818	New	+$56.4K	0.01%	1348
2025 Q3	–	Sell	-11,002	Closed	-$42.1K	–	1350
2025 Q2	$42.1K	Buy	+11,002	New	+$28.4K	0.01%	1126
2024 Q1	–	Sell	-15,294	Closed	-$53.7K	–	2913
2023 Q4	$53.7K	Buy	+15,294	New	+$47.2K	﹤0.01%	2594
2023 Q1	–	Sell	-22,387	Closed	-$156K	–	2601
2022 Q4	$156K	Buy	+22,387	New	+$128K	﹤0.01%	2003
2019 Q2	–	Sell	-13,507	Closed	-$122K	–	2049
2019 Q1	$122K	Buy	+13,507	New	+$115K	﹤0.01%	1547
2017 Q4	–	Sell	-50,728	Closed	-$365K	–	1713
2017 Q3	$365K	Buy	+50,728	New	+$265K	0.03%	331

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

Jane Street New York $1.21T AUM 78.12% 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

Two Sigma Securities's ALDX Position: Q2 2026 in Review

Two Sigma Securities opened a new position in Aldeyra Therapeutics (ALDX) in Q2 2026: 32,818 shares worth $69.9K. The stake represents 0.01% of the portfolio and ranks #1348 among its holdings. This is a return to the name: Two Sigma Securities previously reported a position in ALDX as recently as Q2 2025.

Two Sigma Securities first reported a position in ALDX in Q3 2017 and has held it in 6 quarters since. The position peaked at $365K in Q3 2017. 108 funds tracked by Wall St. Rank hold ALDX as of Q2 2026.

Two Sigma Securities held 32,818 shares of Aldeyra Therapeutics worth $69.9K as of Q2 2026.
Aldeyra Therapeutics was a new Two Sigma Securities position in Q2 2026.
Aldeyra Therapeutics made up 0.01% of Two Sigma Securities's portfolio in Q2 2026, its #1348 holding.
Two Sigma Securities first reported a position in Aldeyra Therapeutics in Q3 2017 and has held it in 6 quarters since.
Two Sigma Securities's Aldeyra Therapeutics position peaked at $365K in Q3 2017.
108 funds tracked by Wall St. Rank held Aldeyra Therapeutics as of Q2 2026.

Based on Two Sigma Securities's 13F filing for Q2 2026, filed 14 Aug 2026.