Aldeyra TherapeuticsALDX
13F holders, Q2 2026 (June 30)107holders −21
18new positions
38sold out
6famous investors
$2.13avg. 13F price*
At the end of Q2 2026, 107 institutions reported holding Aldeyra Therapeutics Inc. (ALDX) in their 13F filings, down 21 from Q1 2026. 18 opened new positions and 38 sold out. The largest holders were Knoll Capital Management, LLC ($11.7M), AQR Capital Management ($8.0M) and Kingdon Capital Management, L.L.C. ($5.6M). 6 famous investors held it, including Cliff Asness (0.0% of AQR Capital Management's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Aldeyra Therapeutics Inc.
- CUSIP
- 01438T106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 18 | $3.3M |
| Exits | 38 | $4.0M |
All 13F filers, Q1 2026 → Q2 2026: 7,851,450 shares bought and 8,567,363 shares sold, net −715,913 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 107 holders
| Knoll Capital Management, LLC | 5.44% | No change | 5,475,516 | $11.7M |
| AQR Capital Management | 0.00% | Add +32.6% | 3,751,558 | $8.0M |
| Kingdon Capital Management, L.L.C. | 0.76% | Add +23.2% | 2,652,315 | $5.6M |
| Vanguard Capital Management LLC | 0.00% | Reduce -0.1% | 2,361,796 | $5.0M |
| D. E. Shaw & Co. | 0.00% | Add +38.2% | 1,940,338 | $4.1M |
| Marshall Wace, LLP | 0.00% | Add +1062.0% | 1,506,974 | $3.2M |
| 683 Capital Management, LLC | 0.30% | Reduce -3.3% | 1,450,000 | $3.1M |
| Jane Street Group, LLC | 0.00% | Add +41.9% | 1,375,115 | $2.9M |
| BlackRock, Inc. | 0.00% | Reduce -66.6% | 1,257,243 | $2.7M |
| Qube Research & Technologies Ltd | 0.00% | Add +1196.3% | 1,128,803 | $2.4M |
| Acadian Asset Management LLC | 0.00% | Add +23.9% | 1,063,793 | $2.3M |
| Ardsley Advisory Partners LP | 0.23% | Add +2.6% | 975,000 | $2.1M |
| Renaissance Technologies | 0.00% | Add +2.2% | 882,000 | $1.9M |
| Vanguard Portfolio Management LLC | 0.00% | Reduce -1.6% | 794,863 | $1.7M |
| Goldman Sachs Group Inc. | 0.00% | Add +33.6% | 725,444 | $1.5M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Reduce -18.8% | 646,840 | $1.4M |
| Morgan Stanley | 0.00% | Add +17.3% | 608,321 | $1.3M |
| Geode Capital Management, LLC | 0.00% | Reduce -52.4% | 596,029 | $1.3M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -15.2% | 529,083 | $1.1M |
| Gsa Capital Partners LLP | 0.06% | Add +91.2% | 472,564 | $1.0M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 421,178 | $897K |
| Citadel Advisors | 0.00% | Add +42.4% | 379,144 | $808K |
| Millennium Management | 0.00% | Reduce -63.8% | 360,350 | $768K |
| UBS Group AG | 0.00% | Reduce -43.8% | 301,940 | $643K |
| Vanguard Fiduciary Trust Co. | 0.00% | Reduce -11.9% | 298,242 | $635K |
| XTX Topco Ltd | 0.01% | Add +238.9% | 254,777 | $543K |
| Woodstock Corp. | 0.04% | Reduce -9.0% | 242,756 | $517K |
| State Street Corp. | 0.00% | Reduce -79.2% | 233,774 | $498K |
| Ieq Capital, LLC | 0.00% | Reduce -22.5% | 206,593 | $440K |
| Cantor Fitzgerald, L. P. | 0.01% | New | 200,000 | $426K |
| Caption Management, LLC | 0.01% | No change | 165,000 | $351K |
| Wells Fargo & Company | 0.00% | Reduce -14.4% | 162,336 | $346K |
| Invesco Ltd. | 0.00% | Reduce -6.0% | 159,540 | $340K |
| BNP Paribas Financial Markets | 0.00% | Add +427.4% | 157,248 | $335K |
| Palo Alto Investors LP | 0.05% | No change | 155,709 | $332K |
| Point72 Asset Management | 0.00% | New | 154,408 | $329K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | New | 154,292 | $329K |
| Man Group plc | 0.00% | New | 152,713 | $325K |
| Jain Global LLC | 0.00% | New | 131,502 | $280K |
| Two Sigma Investments, LP | 0.00% | Reduce -42.8% | 127,849 | $272K |
| Northern Trust Corp. | 0.00% | Reduce -71.0% | 108,888 | $232K |
| JPMorgan Chase & Co. | 0.00% | Add +373.2% | 109,578 | $225K |
| Kennedy Capital Management LLC | 0.00% | Add +1.9% | 97,726 | $208K |
| Canada Pension Plan Investment Board | 0.00% | Add +99.0% | 94,300 | $201K |
| Squarepoint Ops LLC | 0.00% | New | 94,048 | $200K |
| Russell Investments Group, Ltd. | 0.00% | Add +7.2% | 90,353 | $192K |
| Mariner, LLC | 0.00% | Reduce -1.7% | 90,339 | $192K |
| Royal Bank of Canada | 0.00% | Add +5732.1% | 79,783 | $170K |
| Cerity Partners LLC | 0.00% | Reduce -10.5% | 72,712 | $155K |
| Chicago Partners Investment Group LLC | 0.00% | Add +330.2% | 83,984 | $130K |
| Susquehanna International Group, LLP | 0.00% | Reduce -79.0% | 58,398 | $124K |
| Captrust Financial Advisors | 0.00% | Reduce -2.2% | 51,778 | $110K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Reduce -22.2% | 47,518 | $98K |
| Quadrature Capital Ltd | 0.00% | New | 46,044 | $98K |
| Graham Capital Management, L.P. | 0.00% | Reduce -15.6% | 43,556 | $93K |
| International Assets Investment Management, LLC | 0.01% | Reduce -1.6% | 36,750 | $89K |
| Creative Planning | 0.00% | Add +32.3% | 38,200 | $81K |
| AlphaCentric Advisors LLC | 0.07% | Add +1.4% | 37,656 | $80K |
| Mercer Global Advisors Inc. | 0.00% | Reduce -2.2% | 36,901 | $79K |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -52.4% | 35,091 | $75K |
| Bank of America Corp. | 0.00% | Reduce -84.3% | 33,925 | $72K |
| Two Sigma Securities, LLC | 0.01% | New | 32,818 | $70K |
| Simplex Trading, LLC | 0.00% | New | 28,957 | $62K |
| Arax Advisory Partners | 0.00% | Add +5915.6% | 28,634 | $61K |
| State of Wisconsin Investment Board | 0.00% | New | 28,400 | $60K |
| Providence Wealth Advisors, LLC | 0.03% | No change | 25,000 | $59K |
| Rhumbline Advisers | 0.00% | Reduce -61.5% | 26,652 | $57K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 20,920 | $45K |
| Sei Investments Co. | 0.00% | New | 20,739 | $44K |
| Hikari Power Ltd | 0.01% | No change | 20,020 | $43K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 18,106 | $39K |
| FMR LLC | 0.00% | Add +8.4% | 17,889 | $38K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 17,687 | $38K |
| Letko, Brosseau & Associates Inc. | 0.00% | No change | 17,300 | $37K |
| Y-Intercept (Hong Kong) Ltd | 0.00% | New | 17,084 | $36K |
| Merit Financial Group, LLC | 0.00% | Reduce -15.3% | 16,664 | $35K |
| Brighton Jones LLC | 0.00% | Reduce -27.3% | 16,144 | $34K |
| Virtu Financial LLC | 0.00% | New | 15,826 | $34K |
| StoneX Group Inc. | 0.00% | New | 19,296 | $33K |
| Activest Wealth Management | 0.01% | Add +275.0% | 15,000 | $32K |
| Cetera Investment Advisers | 0.00% | New | 14,699 | $31K |
| Focus Partners Wealth | 0.00% | Reduce -37.3% | 13,863 | $30K |
| LPL Financial LLC | 0.00% | Reduce -43.1% | 13,316 | $28K |
| King Wealth Management Group | 0.00% | Add +6.7% | 12,700 | $27K |
| Inspirion Wealth Advisors, LLC | 0.00% | No change | 10,000 | $24K |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 10,863 | $23K |
| Global Retirement Partners, LLC | 0.00% | — | 10,000 | $21K |
| Barclays PLC | 0.00% | Reduce -41.8% | 5,769 | $12K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | No change | 4,825 | $10K |
| Farther Finance Advisors, LLC | 0.00% | Add +1.1% | 4,497 | $10K |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -4.5% | 4,027 | $9K |
| Optiver Holding B.V. | 0.00% | Reduce -11.9% | 4,022 | $9K |
| Essential Partners LLC | 0.00% | Reduce -94.2% | 2,070 | $4K |
| Raffa Wealth Management, LLC | 0.00% | No change | 1,897 | $4K |
| Allworth Financial LP | 0.00% | Reduce -12.4% | 1,827 | $4K |
| PNC Financial Services Group, Inc. | 0.00% | Add +326.8% | 1,575 | $3K |
| SBI Securities Co., Ltd. | 0.00% | Add +441.1% | 1,423 | $3K |
| IFP Advisors, Inc | 0.00% | Reduce -2.4% | 1,407 | $3K |
| Rothschild Investment LLC | 0.00% | Reduce -1.4% | 355 | $756 |
| Citigroup Inc. | 0.00% | Reduce -89.5% | 327 | $697 |
| GAMMA Investing LLC | 0.00% | Reduce -71.3% | 320 | $682 |
| True Wealth Design, LLC | 0.00% | Add +97.5% | 312 | $665 |
| Truvestments Capital LLC | 0.00% | No change | 265 | $564 |
| SJS Investment Consulting Inc. | 0.00% | Reduce -33.1% | 190 | $405 |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -96.0% | 184 | $392 |
| HighMark Wealth Management LLC | 0.00% | No change | 155 | $330 |
| TD Waterhouse Canada Inc. | 0.00% | No change | 15 | $36 |
"% of holder's portfolio" is ALDX's weight in each manager's 13F, not the share of Aldeyra Therapeutics Inc. the manager owns.