Who owns Aldeyra The?
Institutional ownership of ALDX from SEC Form 13F filings across 79 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
79
13F holders
$42.4M
value, 2026 filers
34.8%
of shares outstanding (21.0M sh)
17
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of ALDX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | KINGDON CAPITAL MANAGEMENT, L.L.C. | 2.7M | $5.6M | 0.6% | 4.4% | +23.2% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | $5.0M | 0.0% | 3.9% | -50.0% |
| 3 | D. E. Shaw & Co., Inc. | 1.9M | $4.1M | 0.0% | 3.2% | +38.2% |
| 4 | MARSHALL WACE, LLP | 1.5M | $3.2M | 0.0% | 2.5% | +1062.0% |
| 5 | JANE STREET GROUP, LLC | 1.4M | $2.9M | 0.0% | 2.3% | +41.9% |
| 6 | BlackRock, Inc. | 1.3M | $2.7M | 0.0% | 2.1% | -66.6% |
| 7 | Qube Research & Technologies Ltd | 1.1M | $2.4M | 0.0% | 1.9% | +1196.3% |
| 8 | ACADIAN ASSET MANAGEMENT LLC | 1.1M | $2,262 | 0.0% | 1.8% | +23.9% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 794,863 | $1.7M | 0.0% | 1.3% | -1.6% |
| 10 | GOLDMAN SACHS GROUP INC | 725,444 | $1.5M | 0.0% | 1.2% | +33.6% |
| 11 | MORGAN STANLEY | 608,321 | $1.3M | 0.0% | 1% | +17.3% |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 596,029 | $1.3M | 0.0% | 1% | -52.4% |
| 13 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIPNEW | 421,178 | $897,109 | 0.0% | 0.7% | new |
| 14 | CITADEL ADVISORS LLC | 379,144 | $807,576 | 0.0% | 0.6% | +42.4% |
| 15 | MILLENNIUM MANAGEMENT LLC | 360,350 | $767,546 | 0.0% | 0.6% | -63.8% |
| 16 | UBS Group AG | 301,940 | $643,132 | 0.0% | 0.5% | -43.8% |
| 17 | VANGUARD FIDUCIARY TRUST CO | 298,242 | $635,255 | 0.0% | 0.5% | -11.9% |
| 18 | IEQ CAPITAL, LLC | 206,593 | $440,043 | 0.0% | 0.3% | -22.5% |
| 19 | CANTOR FITZGERALD, L. P.NEW | 200,000 | $426,000 | 0.0% | 0.3% | new |
| 20 | Caption Management, LLC | 165,000 | $351,450 | 0.0% | 0.3% | 0.0% |
| 21 | WELLS FARGO & COMPANY/MN | 162,336 | $345,776 | 0.0% | 0.3% | -14.4% |
| 22 | Invesco Ltd. | 159,540 | $339,820 | 0.0% | 0.3% | -6.0% |
| 23 | BNP PARIBAS FINANCIAL MARKETS | 157,248 | $334,938 | 0.0% | 0.3% | +427.4% |
| 24 | Point72 Asset Management, L.P.NEW | 154,408 | $328,889 | 0.0% | 0.3% | new |
| 25 | Connor, Clark & Lunn Investment Management Ltd.NEW | 154,292 | $328,642 | 0.0% | 0.3% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.