What does CUSIP 01438T106 represent in this 13F holders report?

CUSIP 01438T106 is the security identifier for ALDX - Aldeyra Therapeutics, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held ALDX - Aldeyra Therapeutics, Inc. - Common Stock in Q1 2021?

107 institutional investors reported ALDX - Aldeyra Therapeutics, Inc. - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

Aldeyra Therapeutics, Inc. - Common Stock (ALDX)

CUSIP: 01438T106

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 59,794,743
Total 13F shares: 31,692,851
Share change: +9,598,032
Total reported value: $376,513,639
Put/Call ratio: 126%
Price per share: $11.88
Number of holders: 107
Value change: +$122,609,589
Number of buys: 61
Number of sells: 43

Quarterly Holders Quick Answers

What is CUSIP 01438T106?
CUSIP 01438T106 identifies ALDX - Aldeyra Therapeutics, Inc. - Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 01438T106:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of ALDX - Aldeyra Therapeutics, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
PERCEPTIVE ADVISORS LLC	13F	Company	11%	6,285,458	$43,118,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	2.7%	1,616,005	$11,086,000	—	31 Dec 2020	13F
Avidity Partners Management LP	13F	Company	2.4%	1,435,000	$9,844,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	2.2%	1,325,687	$9,094,000	—	31 Dec 2020	13F
Prosight Management, LP	13F	Company	1.5%	908,488	$6,232,000	—	31 Dec 2020	13F
Point72 Asset Management, L.P.	13F	Company	1.4%	858,270	$5,888,000	—	31 Dec 2020	13F
BlackRock Finance, Inc.	13F	Company	1.3%	780,304	$5,352,000	—	31 Dec 2020	13F
TWO SIGMA ADVISERS, LP	13F	Company	1.1%	673,300	$4,619,000	—	31 Dec 2020	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	1.1%	666,369	$4,571,000	—	31 Dec 2020	13F
Ghost Tree Capital, LLC	13F	Company	1.1%	650,000	$4,459,000	—	31 Dec 2020	13F
Johnson & Johnson Innovation - JJDC, Inc.	13F	Company	0.99%	594,834	$4,081,000	—	31 Dec 2020	13F
Knoll Capital Management, LLC	13F	Company	0.95%	569,405	$3,906,000	—	31 Dec 2020	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.93%	559,055	$3,835,000	—	31 Dec 2020	13F
BANK OF MONTREAL /CAN/	13F	Company	0.52%	309,238	$3,167,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.51%	303,505	$2,082,000	—	31 Dec 2020	13F
DEUTSCHE BANK AG\	13F	Company	0.5%	299,633	$2,055,000	—	31 Dec 2020	13F
JACOBS LEVY EQUITY MANAGEMENT, INC	13F	Company	0.5%	297,832	$2,043,000	—	31 Dec 2020	13F
Assenagon Asset Management S.A.	13F	Company	0.45%	269,183	$1,847,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.45%	268,032	$1,839,000	—	31 Dec 2020	13F
683 Capital Management, LLC	13F	Company	0.36%	216,818	$1,487,000	—	31 Dec 2020	13F
Verition Fund Management LLC	13F	Company	0.33%	196,754	$1,350,000	—	31 Dec 2020	13F
ACUTA CAPITAL PARTNERS, LLC	13F	Company	0.32%	192,500	$1,321,000	—	31 Dec 2020	13F
Palo Alto Investors LP	13F	Company	0.27%	160,800	$1,103,000	—	31 Dec 2020	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.26%	157,558	$1,081,000	—	31 Dec 2020	13F
Qube Research & Technologies Ltd	13F	Company	0.25%	152,189	$1,044,000	—	31 Dec 2020	13F
WOODSTOCK CORP	13F	Company	0.25%	148,072	$1,016,000	—	31 Dec 2020	13F
ExodusPoint Capital Management, LP	13F	Company	0.23%	139,520	$957,000	—	31 Dec 2020	13F
FMR LLC	13F	Company	0.21%	128,488	$881,000	—	31 Dec 2020	13F
HRT FINANCIAL LP	13F	Company	0.2%	119,207	$817,000	—	31 Dec 2020	13F
Weiss Multi-Strategy Advisers LLC	13F	Company	0.19%	112,452	$771,000	—	31 Dec 2020	13F
UBS Group AG	13F	Company	0.17%	102,380	$702,000	—	31 Dec 2020	13F
Affinity Asset Advisors, LLC	13F	Company	0.17%	100,000	$686,000	—	31 Dec 2020	13F
FIRST TRUST ADVISORS LP	13F	Company	0.16%	93,920	$644,000	—	31 Dec 2020	13F
STIFEL FINANCIAL CORP	13F	Company	0.15%	91,201	$626,000	—	31 Dec 2020	13F
JANE STREET GROUP, LLC	13F	Company	0.13%	80,560	$553,000	—	31 Dec 2020	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	0.13%	75,873	$520,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	0.12%	73,364	$504,000	—	31 Dec 2020	13F
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC	13F	Company	0.12%	71,221	$489,000	—	31 Dec 2020	13F
ALPS ADVISORS INC	13F	Company	0.12%	69,170	$475,000	—	31 Dec 2020	13F
Mesirow Financial Investment Management, Inc.	13F	Company	0.11%	64,698	$443,828	—	31 Dec 2020	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.11%	64,500	$442,000	—	31 Dec 2020	13F
GSA CAPITAL PARTNERS LLP	13F	Company	0.1%	61,220	$420,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	0.09%	56,674	$388,000	—	31 Dec 2020	13F
APOGEM CAPITAL LLC	13F	Company	0.09%	55,821	$383,000	—	31 Dec 2020	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.09%	53,800	$369,000	—	31 Dec 2020	13F
Russell Investments Group, Ltd.	13F	Company	0.08%	46,802	$320,000	—	31 Dec 2020	13F
CITIGROUP INC	13F	Company	0.07%	44,193	$303,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.07%	42,935	$295,000	—	31 Dec 2020	13F
Ensign Peak Advisors, Inc	13F	Company	0.07%	41,318	$283,000	—	31 Dec 2020	13F
CAPSTONE INVESTMENT ADVISORS, LLC	13F	Company	0.07%	39,221	$269,000	—	31 Dec 2020	13F

Institutional Holders of Aldeyra Therapeutics, Inc. - Common Stock (ALDX) as of Q1 2021

As of 31 Mar 2021, Aldeyra Therapeutics, Inc. - Common Stock (ALDX) was held by 107 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 31,692,851 shares. The largest 10 holders included PERCEPTIVE ADVISORS LLC, First Light Asset Management, LLC, Avidity Partners Management LP, STATE STREET CORP, VANGUARD GROUP INC, BlackRock Inc., TWO SIGMA INVESTMENTS, LP, TWO SIGMA ADVISERS, LP, FMR LLC, and Woodline Partners LP. This page lists 107 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

Q1 2021 holders

107

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.