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Aldeyra Therapeutics
ALDX

125 hedge funds and large institutions have $226M invested in Aldeyra Therapeutics in 2025 Q1 according to their latest regulatory filings, with 23 funds opening new positions, 27 increasing their positions, 47 reducing their positions, and 14 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more funds holding in top 10

Funds holding in top 10: 1 → 2 (+1)

66% more call options, than puts

Call options by funds: $5.79M | Put options by funds: $3.49M

64% more first-time investments, than exits

New positions opened: 23 | Existing positions closed: 14

22% more capital invested

Capital invested by funds: $186M → $226M (+$40M)

6% more funds holding

Funds holding: 118 → 125 (+7)

1% more ownership

Funds ownership: 62.45% → 63.45% (+1%)

43% less repeat investments, than reductions

Existing positions increased: 27 | Existing positions reduced: 47

Holders
125
Holders Change
+7
Holders Change %
+5.93%
% of All Funds
1.68%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
23
Increased
27
Reduced
47
Closed
14
Calls
$5.79M
Puts
$3.49M
Net Calls
+$2.3M
Net Calls Change
+$857K

Top Buyers

1
KCM
Kingdon Capital Management
New York
+$4.6M
2
AAP
Ardsley Advisory Partners
Connecticut
+$3.55M
3
Invesco
Invesco
Georgia
+$2.79M
4
AQR Capital Management
AQR Capital Management
Connecticut
+$1.9M
5
N
Nuveen
North Carolina
+$1.29M

Top Sellers

1
ACM
ADAR1 Capital Management
Texas
-$2.58M
2
PI
PFG Investments
New York
-$1.75M
3
Raymond James Financial
Raymond James Financial
Florida
-$1.63M
4
KCM
Kennedy Capital Management
Missouri
-$1.39M
5
CM
Caption Management
Oklahoma
-$1.27M
Name Holding Trade Value Shares
Change 		Change in
Stake
PA
1
Perceptive Advisors
New York
$53.3M – – –
KCM
2
Knoll Capital Management
Florida
$31.5M – – –
BlackRock
3
BlackRock
New York
$21.5M -$320K -54,152 -1%
Vanguard Group
4
Vanguard Group
Pennsylvania
$21.4M -$229K -38,770 -1%
N
5
Nuveen
North Carolina
$10M +$1.29M +218,797 +169%
AAP
6
Ardsley Advisory Partners
Connecticut
$9.89M +$3.55M +600,000 +52%
KCM
7
Kennedy Capital Management
Missouri
$7.09M -$1.39M -235,105 -16%
Geode Capital Management
8
Geode Capital Management
Massachusetts
$6.54M +$108K +18,273 +2%
State Street
9
State Street
Massachusetts
$5.87M -$70.9K -11,992 -1%
KCM
10
Kingdon Capital Management
New York
$4.48M +$4.6M +779,000 New
Dimensional Fund Advisors
11
Dimensional Fund Advisors
Texas
$3.85M -$390K -65,913 -9%
Morgan Stanley
12
Morgan Stanley
New York
$3.19M -$146K -24,656 -4%
Federated Hermes
13
Federated Hermes
Pennsylvania
$3.17M +$4.22K +714 +0.1%
Invesco
14
Invesco
Georgia
$2.88M +$2.79M +471,231 +1,576%
6CM
15
683 Capital Management
New York
$2.74M +$1.1M +186,000 +64%
Raymond James Financial
16
Raymond James Financial
Florida
$2.6M -$1.63M -275,203 -38%
Bank of America
17
Bank of America
North Carolina
$2.35M +$605K +102,296 +33%
AQR Capital Management
18
AQR Capital Management
Connecticut
$2.26M +$1.9M +321,992 +456%
Wells Fargo
19
Wells Fargo
California
$2.26M -$6.63K -1,122 -0.3%
Northern Trust
20
Northern Trust
Illinois
$2.24M -$94.2K -15,935 -4%
Deutsche Bank
21
Deutsche Bank
Germany
$1.81M -$28.8K -4,864 -2%
PAI
22
Palo Alto Investors
California
$1.3M – – –
WC
23
Woodstock Corp
Massachusetts
$1.28M +$167K +28,175 +14%
ACM
24
ADAR1 Capital Management
Texas
$1.22M -$2.58M -436,381 -67%
CM
25
Caption Management
Oklahoma
$1.04M -$1.27M -215,383 -54%
1
2 3 4 5

ALDX Hedge Fund Activity: Q1 2025 in Review

125 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Aldeyra Therapeutics (ALDX) for Q1 2025, worth a combined $226M — up 22% from $186M a quarter earlier.

Buyers outnumbered sellers: 23 funds opened new ALDX positions and 14 closed out — a net gain of 9 holders — while 27 added to existing stakes and 47 trimmed.

The largest buyer was Kingdon Capital Management, opening a new position worth an estimated $4.6M. The largest seller was ADAR1 Capital Management, cutting an estimated $2.58M.

  • 125 institutional investors held Aldeyra Therapeutics (ALDX) as of Q1 2025, up from 118 in Q4 2024.
  • Funds reported $226M of Aldeyra Therapeutics stock for Q1 2025, up 22% quarter-over-quarter.
  • 23 funds opened new Aldeyra Therapeutics positions in Q1 2025 and 14 closed out, a net change of +9 holders.
  • The largest Aldeyra Therapeutics buyer in Q1 2025 was Kingdon Capital Management, an estimated $4.6M added.
  • The largest Aldeyra Therapeutics seller in Q1 2025 was ADAR1 Capital Management, an estimated $2.58M sold.

Based on aggregated 13F filings for Q1 2025.