Aldeyra TherapeuticsALDX
13F holders, Q1 2026 (March 31)128holders −8
19new positions
28sold out
5famous investors
$1.70avg. 13F price*
At the end of Q1 2026, 128 institutions reported holding Aldeyra Therapeutics Inc. (ALDX) in their 13F filings, down 8 from Q4 2025. 19 opened new positions and 28 sold out. The largest holders were Knoll Capital Management, LLC ($9.3M), BlackRock, Inc. ($6.4M) and AQR Capital Management ($4.8M). 5 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Aldeyra Therapeutics Inc.
- CUSIP
- 01438T106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 19 | $2.7M |
| Exits | 28 | $26.7M |
All 13F filers, Q4 2025 → Q1 2026: 7,562,556 shares bought and 8,891,471 shares sold, net −1,328,915 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 128 holders
| Knoll Capital Management, LLC | 4.90% | No change | 5,475,516 | $9.3M |
| BlackRock, Inc. | 0.00% | Reduce -2.2% | 3,763,887 | $6.4M |
| AQR Capital Management | 0.00% | Add +130.7% | 2,829,875 | $4.8M |
| Vanguard Capital Management LLC | 0.00% | — | 2,363,742 | $4.0M |
| Kingdon Capital Management, L.L.C. | 0.61% | Add +16.3% | 2,152,315 | $3.6M |
| 683 Capital Management, LLC | 0.25% | Reduce -2.0% | 1,500,000 | $2.5M |
| D. E. Shaw & Co. | 0.00% | Reduce -12.3% | 1,403,990 | $2.4M |
| Geode Capital Management, LLC | 0.00% | Add +6.9% | 1,251,652 | $2.1M |
| State Street Corp. | 0.00% | Add +2.4% | 1,124,710 | $1.9M |
| Millennium Management | 0.00% | Add +2158.9% | 995,243 | $1.7M |
| Jane Street Group, LLC | 0.00% | Add +218.9% | 968,891 | $1.6M |
| Ardsley Advisory Partners LP | 0.24% | Reduce -34.5% | 950,000 | $1.6M |
| Renaissance Technologies | 0.00% | Add +146.6% | 863,187 | $1.5M |
| Acadian Asset Management LLC | 0.00% | Reduce -12.4% | 858,288 | $1.4M |
| Vanguard Portfolio Management LLC | 0.00% | — | 807,778 | $1.4M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Reduce -17.8% | 796,816 | $1.3M |
| Propel Bio Management, LLC | 0.78% | New | 730,606 | $1.2M |
| Dimensional Fund Advisors LP | 0.00% | Add +1.9% | 624,170 | $1.1M |
| Goldman Sachs Group Inc. | 0.00% | Add +77.7% | 543,146 | $918K |
| UBS Group AG | 0.00% | Add +461.9% | 537,569 | $908K |
| Morgan Stanley | 0.00% | Reduce -21.1% | 518,642 | $877K |
| Northern Trust Corp. | 0.00% | Reduce -1.2% | 374,812 | $633K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 338,621 | $572K |
| HRT Financial LP | 0.00% | New | 286,444 | $484K |
| Susquehanna International Group, LLP | 0.00% | Add +342.6% | 278,442 | $471K |
| Woodstock Corp. | 0.04% | No change | 266,756 | $451K |
| Ieq Capital, LLC | 0.00% | Add +84.8% | 266,518 | $450K |
| Citadel Advisors | 0.00% | New | 266,340 | $450K |
| Gsa Capital Partners LLP | 0.03% | Add +155.1% | 247,194 | $418K |
| Two Sigma Investments, LP | 0.00% | Reduce -22.2% | 223,537 | $378K |
| Bank of America Corp. | 0.00% | Reduce -47.5% | 215,332 | $364K |
| Alliancebernstein L.P. | 0.00% | Reduce -9.8% | 68,140 | $353K |
| Wells Fargo & Company | 0.00% | Reduce -48.2% | 189,729 | $321K |
| Invesco Ltd. | 0.00% | Add +4.0% | 169,698 | $287K |
| ExodusPoint Capital Management, LP | 0.00% | Add +81.4% | 167,604 | $283K |
| Caption Management, LLC | 0.01% | Add +371.4% | 165,000 | $279K |
| Palo Alto Investors LP | 0.04% | Reduce -30.9% | 155,709 | $263K |
| Wellington Management Group LLP | 0.00% | Reduce -16.7% | 148,962 | $252K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -9.0% | 139,029 | $235K |
| Bank of New York Mellon Corp | 0.00% | Add +18.1% | 136,746 | $231K |
| Marshall Wace, LLP | 0.00% | New | 129,693 | $219K |
| Kennedy Capital Management LLC | 0.00% | Reduce -92.4% | 95,862 | $162K |
| Mariner, LLC | 0.00% | Add +301.6% | 91,870 | $155K |
| Cwm, LLC | 0.00% | Add +111.6% | 91,623 | $155K |
| Fox Run Management, L.L.C. | 0.03% | Add +333.5% | 90,964 | $153K |
| Qube Research & Technologies Ltd | 0.00% | Add +2.5% | 87,078 | $147K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -26.1% | 84,300 | $142K |
| Cerity Partners LLC | 0.00% | Add +59.1% | 81,223 | $137K |
| XTX Topco Ltd | 0.00% | Add +78.0% | 75,166 | $127K |
| T. Rowe Price Associates Inc. | 0.00% | Add +14.8% | 73,772 | $125K |
| Rhumbline Advisers | 0.00% | Reduce -1.7% | 69,205 | $117K |
| STRS Ohio | 0.00% | No change | 68,200 | $115K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +86.9% | 61,087 | $101K |
| Flow Traders U.S. LLC | 0.00% | New | 55,521 | $94K |
| Captrust Financial Advisors | 0.00% | Add +1.8% | 52,947 | $89K |
| Graham Capital Management, L.P. | 0.00% | Reduce -32.4% | 51,592 | $87K |
| Deutsche Bank AG | 0.00% | Reduce -84.2% | 50,271 | $85K |
| Canada Pension Plan Investment Board | 0.00% | Add +33.5% | 47,400 | $80K |
| Mercer Global Advisors Inc. | 0.00% | Add +257.0% | 37,742 | $64K |
| International Assets Investment Management, LLC | 0.00% | Reduce -21.3% | 37,360 | $63K |
| AlphaCentric Advisors LLC | 0.06% | Add +6.3% | 37,120 | $63K |
| Essential Partners LLC | 0.02% | Add +2.0% | 35,893 | $61K |
| First Manhattan Co. Llc. | 0.00% | No change | 34,745 | $59K |
| BNP Paribas Financial Markets | 0.00% | Reduce -88.7% | 29,815 | $50K |
| Creative Planning | 0.00% | Reduce -16.4% | 28,871 | $49K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +2.4% | 25,815 | $44K |
| Providence Wealth Advisors, LLC | 0.03% | No change | 25,000 | $43K |
| LPL Financial LLC | 0.00% | Reduce -32.9% | 23,416 | $40K |
| JPMorgan Chase & Co. | 0.00% | Add +5.3% | 23,158 | $39K |
| Brighton Jones LLC | 0.00% | New | 22,199 | $38K |
| Focus Partners Wealth | 0.00% | New | 22,098 | $37K |
| Nuveen, LLC | 0.00% | Reduce -80.3% | 21,266 | $36K |
| Hikari Power Ltd | 0.00% | No change | 20,020 | $34K |
| Merit Financial Group, LLC | 0.00% | New | 19,679 | $33K |
| Chicago Partners Investment Group LLC | 0.00% | New | 19,523 | $33K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +69.6% | 18,181 | $31K |
| Federation des caisses Desjardins du Quebec | 0.00% | Add +48.6% | 18,106 | $31K |
| Vanguard Global Advisers, LLC | 0.00% | — | 17,687 | $30K |
| Letko, Brosseau & Associates Inc. | 0.00% | No change | 17,300 | $29K |
| Focus Partners Advisor Solutions, LLC | 0.00% | Add +61.6% | 17,026 | $29K |
| FMR LLC | 0.00% | Add +136.9% | 16,503 | $28K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -5.1% | 16,155 | $27K |
| U.S. Capital Wealth Advisors, LLC | 0.00% | Add +6.8% | 15,805 | $27K |
| Krilogy Financial LLC | 0.00% | New | 14,459 | $26K |
| Abel Hall, LLC | 0.01% | New | 15,142 | $26K |
| Capital Advisors Wealth Management, LLC | 0.00% | Reduce -5.1% | 15,000 | $25K |
| Integrated Wealth Concepts LLC | 0.00% | New | 14,958 | $25K |
| Intech Investment Management LLC | 0.00% | Reduce -55.7% | 14,754 | $25K |
| CIBC Bancorp USA Inc. | 0.00% | — | 13,237 | $22K |
| King Wealth Management Group | 0.00% | Add +10.2% | 11,900 | $20K |
| Caerus Investment Advisors, LLC | 0.01% | New | 11,455 | $19K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +126.3% | 11,325 | $19K |
| Inspirion Wealth Advisors, LLC | 0.00% | No change | 10,000 | $17K |
| Barclays PLC | 0.00% | Reduce -88.3% | 9,906 | $17K |
| New York State Common Retirement Fund | 0.00% | No change | 9,598 | $16K |
| Legal & General Group Plc | 0.00% | Reduce -12.5% | 4,940 | $8K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +440.9% | 4,825 | $8K |
| Nisa Investment Advisors, LLC | 0.00% | Add +4642.3% | 4,600 | $8K |
| Optiver Holding B.V. | 0.00% | Add +365.9% | 4,566 | $8K |
| Farther Finance Advisors, LLC | 0.00% | Add +12.5% | 4,450 | $7K |
"% of holder's portfolio" is ALDX's weight in each manager's 13F, not the share of Aldeyra Therapeutics Inc. the manager owns.