SEI Investments’s Aldeyra Therapeutics ALDX Stock Holding History

SEI Investments’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 Q1	–	Sell	-33,287	Closed	-$172K	–	3235
2025 Q4	$172K	Sell	33,287 -6,072	-15%	-$31.2K	﹤0.01%	2934
2025 Q3	$205K	Buy	+39,359	New	+$205K	﹤0.01%	2605
2021 Q3	–	Sell	-69,498	Closed	-$787K	–	2546
2021 Q2	$787K	Buy	+69,498	New	+$836K	﹤0.01%	1907
2019 Q1	–	Sell	-64,540	Closed	-$536K	–	2891
2018 Q4	$536K	Buy	+64,540	New	+$661K	﹤0.01%	1729
2017 Q3	–	Sell	-1,800	Closed	-$8K	–	3187
2017 Q2	$8K	Buy	+1,800	New	+$8.28K	﹤0.01%	2626

Other funds holding ALDX

KCM

Knoll Capital Management Miami, Florida $180M AUM 66.11% 1-Year Est. Return

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

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

KCM

Kingdon Capital Management New York $911M AUM 51.11% 1-Year Est. Return

6CM

683 Capital Management New York $1.92B AUM 85.52% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

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

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

SEI Investments's ALDX Position: Q1 2026 in Review

SEI Investments sold out of Aldeyra Therapeutics (ALDX) in Q1 2026, closing a stake of 33,287 shares — an estimated $172K sold.

SEI Investments first reported a position in ALDX in Q2 2017 and held it in 5 quarters. The position peaked at $787K in Q2 2021. 126 funds tracked by Wall St. Rank hold ALDX as of Q1 2026.

SEI Investments reported no remaining Aldeyra Therapeutics position as of Q1 2026 after selling out during the quarter.
SEI Investments sold 33,287 Aldeyra Therapeutics shares in Q1 2026, an estimated $172K.
SEI Investments first reported a position in Aldeyra Therapeutics in Q2 2017 and held it in 5 quarters.
SEI Investments's Aldeyra Therapeutics position peaked at $787K in Q2 2021.
126 funds tracked by Wall St. Rank held Aldeyra Therapeutics as of Q1 2026.

Based on SEI Investments's 13F filing for Q1 2026, filed 13 May 2026.