Aldeyra Therapeutics, Inc.

ALDX

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001341235

SEC filings (opens in a new tab)

No open-market purchases or sales by Aldeyra Therapeutics, Inc. insiders were filed in the last 90 days; 107 institutions reported holding it in 13F filings for Q2 2026, worth $77.7M in total; no superinvestor holds it.

Q1 2025 vs. Q4 2024

How the institutions holding Aldeyra Therapeutics, Inc. changed between Q4 2024 and Q1 2025.

All holders in Q1 2025 All holders in Q4 2024

13F holders of ALDX: Q4 2024 compared with Q1 2025
Measure	Q4 2024	Of which not filed for Q1 2025	Q1 2025	Change
Holders	119	3	126	+10
Shares	37.2M	204.9K	37.9M	+900.9K (+2.4%)
Value	$185.6M	$1.02M	$215.5M	+$31.0M (+16.8%)

3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (24)

Institutions that held Aldeyra Therapeutics, Inc. at the end of Q1 2025 but not at the end of Q4 2024.

Institutions new to ALDX in Q1 2025
Institution	Shares	Value	% of portfolio
Kingdon Capital Management, L.L.C.	779,000	$4.48M	0.93%
Jane Street Group, LLC	178,110	$1.02M	0.00%
Wellington Management Group LLP	117,475	$675.5K	0.00%
Ieq Capital, LLC	44,145	$253.8K	0.00%
Jacobs Levy Equity Management, Inc	37,984	$218.4K	0.00%
Verition Fund Management LLC	37,505	$215.7K	0.00%
Franklin Resources Inc	32,346	$186.0K	0.00%
Russell Investments Group, Ltd.	27,042	$155.5K	0.00%
XTX Topco Ltd	23,332	$134.2K	0.01%
Fox Run Management, L.L.C.	22,912	$131.7K	0.02%
Commonwealth Equity Services, LLC	22,395	$129.0K	0.00%
Wolverine Trading, LLC	12,028	$80.2K	0.00%
Creative Planning	13,017	$74.8K	0.00%
Brevan Howard Capital Management LP	11,397	$65.5K	0.00%
CIBC World Markets Corp	11,054	$63.6K	0.00%
Wealth Enhancement Advisory Services, LLC	10,910	$62.7K	0.00%
Capital Advisors Wealth Management, LLC	10,800	$62.1K	0.01%
Deerfield Management Company, L.P. (Series C)	10,328	$59.4K	0.00%
Skopos Labs, Inc.	1,442	$8.29K	0.00%
GAMMA Investing LLC	684	$3.93K	0.00%
Caitong International Asset Management Co., Ltd	171	$983	0.00%
Parallel Advisors, LLC	30	$173	0.00%
US Bancorp	24	$138	0.00%
Nuveen, LLC	348,521	–	–

Sold out (14)

Institutions that held Aldeyra Therapeutics, Inc. at the end of Q4 2024 and filed for Q1 2025 without it.

Institutions that sold out of ALDX in Q1 2025
Institution	Shares, Q4 2024	Value, Q4 2024
Citadel Advisors LLC	85,642	$427.4K
Mackenzie Financial Corp	47,792	$238.5K
American Century Companies Inc	39,198	$195.6K
Tobias Financial Advisors, Inc.	23,695	$118.2K
Laidlaw Wealth Management LLC	18,175	$90.7K
U.S. Capital Wealth Advisors, LLC	13,875	$69.2K
Walleye Capital LLC	13,706	$68.4K
King Wealth	13,500	$67.0K
Catalyst Funds Management Pty Ltd	13,100	$65.4K
Diversified Trust Co	12,265	$61.2K
Balyasny Asset Management LLC	11,278	$56.3K
Prime Capital Investment Advisors, LLC	10,000	$49.9K
IFP Advisors, Inc	13	$65
Macquarie Group Ltd	9,791	$49

Not filed for Q1 2025 yet (3)

Institutions that held Aldeyra Therapeutics, Inc. at the end of Q4 2024 and haven't filed a 13F for Q1 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ALDX in Q4 2024 that haven't filed for Q1 2025
Institution	Shares, Q4 2024	Value, Q4 2024
Nuveen Asset Management, LLC	129,724	$647.3K
AlphaCentric Advisors LLC	46,913	$234.1K
Boston Financial Mangement LLC	28,248	$141.0K