ALDX Aldeyra Therapeutics

NASDAQ
$1.36

Aldeyra Therapeutics (ALDX) Institutional Ownership

What the institutions did with ALDX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
144
filed both this quarter and last
Managers holding
106
-20 on the quarter
Buyers
49
18 opened new
Sellers
81
38 sold out entirely
Buyer share
37.7%
of managers who traded it
Breadth
-24.6
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
Knoll Capital Management, LLC 5.5M 14.9%
AQR CAPITAL MANAGEMENT LLC 3.8M 10.2%
KINGDON CAPITAL MANAGEMENT, L.L.C. 2.7M 7.2%
VANGUARD CAPITAL MANAGEMENT LLC 2.4M 6.4%
D. E. Shaw & Co., Inc. 1.9M 5.3%
MARSHALL WACE, LLP 1.5M 4.1%
683 Capital Management, LLC 1.5M 3.9%
JANE STREET GROUP, LLC 1.4M 3.7%
BlackRock, Inc. 1.3M 3.4%
Qube Research & Technologies Ltd 1.1M 3.1%
ACADIAN ASSET MANAGEMENT LLC 1.1M 2.9%
ARDSLEY ADVISORY PARTNERS LP 975.0K 2.7%
RENAISSANCE TECHNOLOGIES LLC 882.0K 2.4%
VANGUARD PORTFOLIO MANAGEMENT LLC 794.9K 2.2%
GOLDMAN SACHS GROUP INC 725.4K 2.0%
JACOBS LEVY EQUITY MANAGEMENT, INC 646.8K 1.8%
MORGAN STANLEY 608.3K 1.7%
GEODE CAPITAL MANAGEMENT, LLC 596.0K 1.6%
DIMENSIONAL FUND ADVISORS LP 529.1K 1.4%
GSA CAPITAL PARTNERS LLP 472.6K 1.3%
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 421.2K 1.1%
CANTOR FITZGERALD, L. P. 400.0K 1.1%
CITADEL ADVISORS LLC 379.1K 1.0%
MILLENNIUM MANAGEMENT LLC 360.4K 1.0%
UBS Group AG 301.9K 0.8%

Largest changes

Manager Action Previous Current Change
BlackRock, Inc. Reduced 3.8M 1.3M -2.5M
MARSHALL WACE, LLP Increased 129.7K 1.5M +1.4M
Qube Research & Technologies Ltd Increased 87.1K 1.1M +1.0M
AQR CAPITAL MANAGEMENT LLC Increased 2.8M 3.8M +921.7K
STATE STREET CORP Reduced 1.1M 233.8K -890.9K
Propel Bio Management, LLC Sold Out 730.6K 0 -730.6K
GEODE CAPITAL MANAGEMENT, LLC Reduced 1.3M 596.0K -655.6K
MILLENNIUM MANAGEMENT LLC Reduced 995.2K 360.4K -634.9K
D. E. Shaw & Co., Inc. Increased 1.4M 1.9M +536.3K
KINGDON CAPITAL MANAGEMENT, L.L.C. Increased 2.2M 2.7M +500.0K
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP New 0 421.2K +421.2K
JANE STREET GROUP, LLC Increased 968.9K 1.4M +406.2K
CANTOR FITZGERALD, L. P. New 0 400.0K +400.0K
HRT FINANCIAL LP Sold Out 286.4K 0 -286.4K
NORTHERN TRUST CORP Reduced 374.8K 108.9K -265.9K
UBS Group AG Reduced 537.6K 301.9K -235.6K
GSA CAPITAL PARTNERS LLP Increased 247.2K 472.6K +225.4K
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced 278.4K 58.4K -220.0K
ACADIAN ASSET MANAGEMENT LLC Increased 858.3K 1.1M +205.5K
GOLDMAN SACHS GROUP INC Increased 543.1K 725.4K +182.3K
BANK OF AMERICA CORP /DE/ Reduced 215.3K 33.9K -181.4K
XTX Topco Ltd Increased 75.2K 254.8K +179.6K
ExodusPoint Capital Management, LP Sold Out 167.6K 0 -167.6K
Point72 Asset Management, L.P. New 0 154.4K +154.4K
Connor, Clark & Lunn Investment Management Ltd. New 0 154.3K +154.3K
Man Group plc New 0 152.7K +152.7K
JACOBS LEVY EQUITY MANAGEMENT, INC Reduced 796.8K 646.8K -150.0K
WELLINGTON MANAGEMENT GROUP LLP Sold Out 149.0K 0 -149.0K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Sold Out 139.0K 0 -139.0K
Bank of New York Mellon Corp Sold Out 136.7K 0 -136.7K
Jain Global LLC New 0 131.5K +131.5K
BNP PARIBAS FINANCIAL MARKETS Increased 29.8K 157.2K +127.4K
CITADEL ADVISORS LLC Increased 266.3K 379.1K +112.8K
TWO SIGMA INVESTMENTS, LP Reduced 223.5K 127.8K -95.7K
DIMENSIONAL FUND ADVISORS LP Reduced 624.2K 529.1K -95.1K
Squarepoint Ops LLC New 0 94.0K +94.0K
FOX RUN MANAGEMENT, L.L.C. Sold Out 91.0K 0 -91.0K
MORGAN STANLEY Increased 518.6K 608.3K +89.7K
JPMORGAN CHASE & CO Increased 23.2K 109.6K +86.4K
ROYAL BANK OF CANADA Increased 1.4K 79.8K +78.4K
STRS OHIO Sold Out 68.2K 0 -68.2K
ALLIANCEBERNSTEIN L.P. Sold Out 68.1K 0 -68.1K
Chicago Partners Investment Group LLC Increased 19.5K 84.0K +64.5K
IEQ CAPITAL, LLC Reduced 266.5K 206.6K -59.9K
FLOW TRADERS U.S. LLC Sold Out 55.5K 0 -55.5K
DEUTSCHE BANK AG\ Sold Out 50.3K 0 -50.3K
683 Capital Management, LLC Reduced 1.5M 1.5M -50.0K
CANADA PENSION PLAN INVESTMENT BOARD Increased 47.4K 94.3K +46.9K
Quadrature Capital Ltd New 0 46.0K +46.0K
RHUMBLINE ADVISERS Reduced 69.2K 26.7K -42.6K
VANGUARD FIDUCIARY TRUST CO Reduced 338.6K 298.2K -40.4K
PRICE T ROWE ASSOCIATES INC /MD/ Reduced 73.8K 35.1K -38.7K
FIRST MANHATTAN CO. LLC. Sold Out 34.7K 0 -34.7K
Essential Partners LLC Reduced 35.9K 2.1K -33.8K
TWO SIGMA SECURITIES, LLC New 0 32.8K +32.8K
SIMPLEX TRADING, LLC New 0 29.0K +29.0K
STATE OF WISCONSIN INVESTMENT BOARD New 0 28.4K +28.4K
Arax Advisory Partners Increased 476 28.6K +28.2K
WELLS FARGO & COMPANY/MN Reduced 189.7K 162.3K -27.4K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Sold Out 25.8K 0 -25.8K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.