Aldeyra Therapeutics, Inc. (ALDX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

5,923,382Shares held by institutions

$9,980,899Value of institutional holdings

56.29%Institutional ownership %

-26.61%Shares Changed QoQ

120No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Aldeyra Therapeutics, Inc. (NASDAQ:ALDX) has 130 institutional investors that have filed 13F reports for the period ending December 2025.

Their combined ownership stood at 64.6% of outstanding shares in December 2025, down from 66.0% in September 2025.
They increased total shares held in ALDX by 0.22% quarter over quarter, and investors in Aldeyra Therapeutics increased 9.24% from a year ago.
Of these 130 holders, 56 added to their stakes in Aldeyra Therapeutics, 53 trimmed positions, and 21 made no changes.
In total, institutional investors held 38.82Mn shares in Aldeyra Therapeutics as of December 2025, up by 83.94K shares quarter on quarter, and down 1.28Mn shares year over year.
Knoll Capital Management, LLC is the top holder of Aldeyra Therapeutics as of December 31, 2025, with 5.48Mn shares representing 9.11% of outstanding stock.
The largest buyers of Aldeyra Therapeutics for the quarter ending December 2025 were 683 Capital Management, LLC (710.0K), KINGDON CAPITAL MANAGEMENT, L.L.C. (518.21K), BNP PARIBAS FINANCIAL MARKETS (252.8K), 1492 Capital Management LLC (223.32K), D. E. Shaw & Co., Inc. (221.48K).
The largest sellers of Aldeyra Therapeutics for the quarter ending December 2025 were PERCEPTIVE ADVISORS LLC (1.04Mn), ARDSLEY ADVISORY PARTNERS LP (450.0K), Morgan Stanley (426.29K), Bank Of America Corp /De/ (370.13K), AQR CAPITAL MANAGEMENT LLC (278.44K).
Per Business Quant, the top 10 investors in ALDX for the quarter ending December 2025 include Knoll Capital Management, LLC (5.48Mn), PERCEPTIVE ADVISORS LLC (4.19Mn), BlackRock, Inc. (3.85Mn), VANGUARD GROUP INC (3.7Mn), KINGDON CAPITAL MANAGEMENT, L.L.C. (1.85Mn), D. E. Shaw & Co., Inc. (1.6Mn), 683 Capital Management, LLC (1.53Mn), ARDSLEY ADVISORY PARTNERS LP (1.45Mn), KENNEDY CAPITAL MANAGEMENT LLC (1.26Mn), AQR CAPITAL MANAGEMENT LLC (1.23Mn).

130 Institutional Holders

5,923,382 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	45,183	1.19%	$0.00
Knoll Capital Management, LLC	31 Dec, 2025	0	0.00%	$0.00
IEQ CAPITAL, LLC	31 Dec, 2025	-14,954	-9.40%	$0.00
Barclays Plc	31 Dec, 2025	-57,734	-40.60%	$0.00
PERCEPTIVE ADVISORS LLC	31 Dec, 2025	-1,036,679	-19.85%	$0.00
Russell Investments Group, Ltd.	31 Dec, 2025	3,024	2.72%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	106,813	2.97%	$0.00
Nuveen, LLC	31 Dec, 2025	-36,465	-25.20%	$0.00
KINGDON CAPITAL MANAGEMENT, L.L.C.	31 Dec, 2025	518,209	38.91%	$0.00
UBS Group AG	31 Dec, 2025	-105,062	-52.34%	$0.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	221,481	16.05%	$0.00
Point72 Asset Management, L.P.	31 Dec, 2025	94,094	0.00%	$0.00
683 Capital Management, LLC	31 Dec, 2025	710,000	86.59%	$0.00
ExodusPoint Capital Management, LP	31 Dec, 2025	77,439	517.95%	$0.00
ARDSLEY ADVISORY PARTNERS LP	31 Dec, 2025	-450,000	-23.68%	$0.00
Qube Research & Technologies Ltd	31 Dec, 2025	84,928	0.00%	$0.00
KENNEDY CAPITAL MANAGEMENT LLC	31 Dec, 2025	143,625	12.91%	$0.00
INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	-1,165	-2.40%	$0.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	-278,438	-18.50%	$0.00
Quantinno Capital Management LP	31 Dec, 2025	-5,336	-10.40%	$0.00

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