Company · Ownership research

Aldeyra Therapeutics, Inc. ALDX

CIK 0001341235 · CUSIP 01438T106

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 01438T106 (ALDX), not CUSIP 01438T906 (ALDX), CUSIP 01438T956 (ALDX), and does not merge CUSIPs.

This page lists the top 20 of 113 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC CIK 1818604 · View history	$53.30M 287,287 shares	0.08%	+229.49K(+397.00%)Added	SEC filing ↗ Oct 22, 2024	▾
02	PERCEPTIVE ADVISORS LLC CIK 1224962 · View history	$50.00M 9,275,851 shares	1.07%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
03	Knoll Capital Management, LLC CIK 1325083 · View history	$29.51M 5,475,516 shares	13.68%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
04	VANGUARD GROUP INC CIK 102909 · View history	$20.27M 3,760,619 shares	0.00%	+18.23K(+0.50%)Added	SEC filing ↗ Nov 13, 2024	▾
05	BlackRock, Inc. CIK 2012383 · View history	$20.13M 3,734,408 shares	0.00%	—	SEC filing ↗ Nov 13, 2024	▾
06	KENNEDY CAPITAL MANAGEMENT LLC CIK 884589 · View history	$10.14M 1,881,078 shares	0.22%	+281.40K(+17.60%)Added	SEC filing ↗ Nov 14, 2024	▾
07	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$6.01M 1,114,628 shares	0.00%	-23.41K(-2.10%)Reduced	SEC filing ↗ Nov 12, 2024	▾
08	STATE STREET CORP CIK 93751 · View history	$5.25M 973,908 shares	0.00%	+16.19K(+1.70%)Added	SEC filing ↗ Nov 14, 2024	▾
09	EAGLE ASSET MANAGEMENT INC CIK 790502 · View history	$3.92M 709,518 shares	0.02%	-132.05K(-15.70%)Reduced	SEC filing ↗ Nov 12, 2024	▾
10	Invesco Ltd. CIK 914208 · View history	$3.54M 656,510 shares	0.00%	+626.65K(+2,098.30%)Added	SEC filing ↗ Nov 12, 2024	▾
11	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$3.26M 604,041 shares	0.00%	-68.02K(-10.10%)Reduced	SEC filing ↗ Nov 7, 2024	▾
12	FEDERATED HERMES, INC. CIK 1056288 · View history	$2.96M 549,564 shares	0.01%	+18.34K(+3.50%)Added	SEC filing ↗ Nov 13, 2024	▾
13	MORGAN STANLEY CIK 895421 · Amended · View history	$2.81M 520,646 shares	0.00%	+209.24K(+67.20%)Added	SEC filing ↗ May 14, 2025	▾
14	ARDSLEY ADVISORY PARTNERS LP CIK 900529 · View history	$2.69M 500,000 shares	0.51%	+500.00KNew	SEC filing ↗ Nov 14, 2024	▾
15	JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history	$2.57M 476,949 shares	0.01%	+295.86K(+163.40%)Added	SEC filing ↗ Nov 14, 2024	▾
16	NORTHERN TRUST CORP CIK 73124 · View history	$2.09M 388,623 shares	0.00%	+3.12K(+0.80%)Added	SEC filing ↗ Nov 13, 2024	▾
17	PFG Investments, LLC CIK 1973224 · View history	$2.08M 386,447 shares	0.13%	-9.80K(-2.50%)Reduced	SEC filing ↗ Oct 24, 2024	▾
18	WELLS FARGO & COMPANY/MN CIK 72971 · View history	$2.08M 386,306 shares	0.00%	-8.99K(-2.30%)Reduced	SEC filing ↗ Nov 13, 2024	▾
19	BANK OF AMERICA CORP /DE/ CIK 70858 · Amended · View history	$2.02M 375,393 shares	0.00%	-3.10K(-0.80%)Reduced	SEC filing ↗ Nov 14, 2024	▾
20	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$1.80M 334,781 shares	0.00%	+12.84K(+4.00%)Added	SEC filing ↗ Nov 14, 2024	▾

Showing 20 / 113 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

113

Cancelled or null records excluded

Disclosed shares

36,698,492

Not deduplicated across managers

Disclosed value

$249.66M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Aldeyra Therapeutics, Inc. · Q3 2024

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.