Aldeyra Therapeutics Ownership | Who Owns Aldeyra Therapeutics?

Aldeyra Therapeutics Ownership Summary

Aldeyra Therapeutics is owned by 53.11% institutional investors, 3.66% insiders, and 43.23% retail investors. Perceptive advisors is the largest institutional shareholder, holding 15.58% of ALDX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.98% of its assets in Aldeyra Therapeutics shares.

ALDX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Aldeyra Therapeutics	53.11%	3.66%	43.23%
Sector	Healthcare Stocks	57.39%	9.93%	32.68%
Industry	Biotech Stocks	68.48%	9.65%	21.87%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Perceptive advisors	9.28M	15.58%	$46.29M
Knoll capital management	5.48M	9.22%	$18.12M
Blackrock funding, inc. /de	3.79M	6.37%	$18.91M
Vanguard group	3.76M	6.31%	$18.75M
Blackrock	3.62M	6.10%	$11.99M
Kennedy capital management	1.47M	2.47%	$7.33M
Ardsley advisory partners lp	1.15M	1.93%	$5.74M
Geode capital management	1.12M	1.88%	$5.59M
State street	1.03M	1.74%	$5.16M
Eagle asset management	841.57K	1.42%	$2.74M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Knoll capital management	5.48M	12.21%	$18.12M
Perceptive advisors	9.28M	1.28%	$46.29M
Ardsley advisory partners lp	1.15M	0.91%	$5.74M
Adar1 capital management	647.96K	0.65%	$3.23M
Alphacentric advisors	46.91K	0.23%	$234.10K
Palo alto investors lp	225.47K	0.17%	$1.13M
Kennedy capital management	1.47M	0.16%	$7.33M
Pfg investments	347.75K	0.11%	$1.74M
Providence wealth advisors	25.00K	0.10%	$133.13K
Woodstock	194.92K	0.09%	$972.65K

Top Buyers

Holder	Shares	% Assets	Change
Raymond james financial	727.12K	0.00%	727.12K
Ardsley advisory partners lp	1.15M	0.91%	650.00K
Caption management	396.49K	0.02%	396.49K
Adar1 capital management	647.96K	0.65%	345.75K
Blackrock	3.62M	0.00%	311.16K

Top Sellers

Holder	Shares	% Assets	Change
Invesco	29.91K	-	-626.60K
Kennedy capital management	1.47M	0.16%	-412.56K
Johnson & johnson	-	-	-299.67K
Los angeles capital management	-	-	-271.26K
Acadian asset management	1.28K	-	-253.03K

New Positions

Holder	Shares	% Assets	Change	Value
Raymond james financial	727.12K	0.00%	727.12K	$3.63M
Caption management	396.49K	0.02%	396.49K	$1.98M
683 capital management	290.00K	0.09%	290.00K	$1.45M
Hrt financial lp	61.89K	0.00%	61.89K	$308.00K
Alphacentric advisors	46.91K	0.23%	46.91K	$234.10K

Sold Out

Holder	Change
Nelson, van denburg & campbell wealth management group	-9.00
Capital performance advisors llp	-17.00
Gamma investing	-25.00
Innealta capital	-46.00
Metropolitan life insurance co/ny	-197.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2024	123	5.13%	31,618,255	-13.84%	53	1.40%	62	3.33%	25	4.17%
Sep 30, 2024	117	9.35%	36,698,492	3.87%	61	1.74%	60	13.21%	24	-22.58%
Jun 30, 2024	105	-0.94%	35,151,111	-0.76%	59	1.64%	51	10.87%	31	-6.06%
Mar 31, 2024	106	-2.75%	35,421,654	0.85%	60	1.70%	46	-	33	-28.26%
Dec 31, 2023	109	-13.49%	35,123,488	-7.02%	59	1.44%	46	-13.21%	46	15.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.78M	2.98%	-
Vanguard US Total Market Shares ETF	1.76M	2.95%	-
iShares Russell 2000 ETF	1.32M	2.21%	-11.44K
Vanguard Institutional Extnd Mkt Idx Tr	701.77K	1.18%	4.20K
Vanguard Explorer Inv	680.00K	1.14%	-
Invesco Dorsey Wright SmallCap Momt ETF	657.21K	1.10%	1.19K
Fidelity Small Cap Index	500.46K	0.84%	-9.37K
Kennedy Micro Cap	464.86K	0.78%	-57.92K
iShares Russell 2000 Value ETF	420.28K	0.70%	-
Federated Hermes MDT Small Cap Growth IS	320.14K	0.54%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Apr 03, 2025	PERCEPTIVE ADVISORS LLC	-	Sell	$4.83M
Apr 12, 2023	Miller-Rich Nancy	-	Buy	$5.16K
May 03, 2021	Miller-Rich Nancy	-	Buy	$5.29K
Aug 12, 2024	Machatha Stephen	Chief Development Officer	Sell	$75.97K
Aug 12, 2024	Greenberg Bruce	See Remarks	Sell	$51.31K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	1
2025 Q1	-	-
2024 Q3	-	2
2024 Q2	5	-
2024 Q1	-	7

ALDX Ownership FAQ

Who Owns Aldeyra Therapeutics?

Aldeyra Therapeutics shareholders are primarily institutional investors at 53.11%, followed by 3.66% insiders and 43.23% retail investors. The average institutional ownership in Aldeyra Therapeutics's industry, Biotech Stocks , is 68.48%, which Aldeyra Therapeutics falls below.

Who owns the most shares of Aldeyra Therapeutics?

Aldeyra Therapeutics’s largest shareholders are Perceptive advisors (9.28M shares, 15.58%), Knoll capital management (5.48M shares, 9.22%), and Blackrock funding, inc. /de (3.79M shares, 6.37%). Together, they hold 31.16% of Aldeyra Therapeutics’s total shares outstanding.

Does Blackrock own Aldeyra Therapeutics?

Yes, BlackRock owns 6.10% of Aldeyra Therapeutics, totaling 3.62M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 11.99M$. In the last quarter, BlackRock increased its holdings by 311.16K shares, a 9.40% change.

Who is Aldeyra Therapeutics’s biggest shareholder by percentage of total assets invested?

Knoll capital management is Aldeyra Therapeutics’s biggest shareholder by percentage of total assets invested, with 12.21% of its assets in 5.48M Aldeyra Therapeutics shares, valued at 18.12M$.

Who is the top mutual fund holder of Aldeyra Therapeutics shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Aldeyra Therapeutics shares, with 2.98% of its total shares outstanding invested in 1.78M Aldeyra Therapeutics shares.

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