ALDEYRA THERAPEUTICS INC (ALDX)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
103
Reporting holders
$77.2M
Reported value
58.8%
Of shares outstanding
2.1%
Held as options
-18
Holder change
Institutions report 35,478,267 shares against 60,326,421 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Knoll Capital Management, LLC | $11.7M | 5,475,516 | 6.50% | 31q | HELD |
| AQR CAPITAL MANAGEMENT LLC | $8.0M | 3,751,558 | 0.00% | 7q | +32.6%+$2.0M |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | $5.6M | 2,652,315 | 0.58% | 6q | +23.2%+$1.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | $5.0M | 2,361,796 | 0.00% | 2q | HELD |
| D. E. Shaw & Co., Inc. | $4.1M | 1,940,338 | 0.00% | 22q | +38.2%+$1.1M |
| MARSHALL WACE, LLP | $3.2M | 1,506,974 | 0.00% | 2q | +1062.0%+$2.9M |
| 683 Capital Management, LLC | $3.1M | 1,450,000 | 0.15% | 7q | -3.3%-$106.5K |
| JANE STREET GROUP, LLC | $3.0M | 1,375,115 | 0.00% | 6q | +41.9%+$878.7K |
| ARDSLEY ADVISORY PARTNERS LP | $2.7M | 975,000 | 0.28% | 8q | +2.6%+$69.6K |
| BlackRock, Inc. | $2.7M | 1,257,243 | 0.00% | 8q | -66.6%-$5.3M |
| Qube Research & Technologies Ltd | $2.4M | 1,128,803 | 0.00% | 3q | +1196.3%+$2.2M |
| RENAISSANCE TECHNOLOGIES LLC | $1.9M | 882,000 | 0.00% | 17q | +2.2%+$40.1K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $1.7M | 794,863 | 0.00% | 2q | -1.6%-$27.5K |
| GOLDMAN SACHS GROUP INC | $1.5M | 725,444 | 0.00% | 31q | +33.6%+$388.3K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | $1.4M | 646,840 | 0.00% | 6q | -18.8%-$319.4K |
| MORGAN STANLEY | $1.3M | 608,321 | 0.00% | 35q | +17.3%+$191.0K |
| GEODE CAPITAL MANAGEMENT, LLC | $1.3M | 596,029 | 0.00% | 31q | -52.4%-$1.4M |
| CITADEL ADVISORS LLC | $1.2M | 379,144 | 0.00% | 31q | +42.4%+$343.9K |
| DIMENSIONAL FUND ADVISORS LP | $1.1M | 529,083 | 0.00% | 29q | -15.2%-$202.5K |
| Palo Alto Investors LP | $995.0K | 467,127 | 0.05% | 29q | +200.0%+$663.3K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $897.1K | 421,178 | 0.00% | new | NEW |
| CANTOR FITZGERALD, L. P. | $852.0K | 400,000 | 0.00% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $767.5K | 360,350 | 0.00% | 7q | -63.8%-$1.4M |
| UBS Group AG | $643.1K | 301,940 | 0.00% | 31q | -43.8%-$501.9K |
| VANGUARD FIDUCIARY TRUST CO | $635.3K | 298,242 | 0.00% | 2q | -11.9%-$86.0K |
| XTX Topco Ltd | $542.7K | 254,777 | 0.01% | 4q | +239.0%+$382.6K |
| WOODSTOCK CORP | $517.1K | 242,756 | 0.04% | 18q | -9.0%-$51.1K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $515.7K | 58,398 | 0.00% | 31q | -79.0%-$1.9M |
| STATE STREET CORP | $497.9K | 233,774 | 0.00% | 31q | -79.2%-$1.9M |
| IEQ CAPITAL, LLC | $440.0K | 206,593 | 0.00% | 6q | -22.5%-$127.6K |
| Caption Management, LLC | $351.4K | 165,000 | 0.00% | 3q | HELD |
| WELLS FARGO & COMPANY/MN | $345.8K | 162,336 | 0.00% | 31q | -57.2%-$462.5K |
| Invesco Ltd. | $339.8K | 159,540 | 0.00% | 16q | -6.0%-$21.6K |
| BNP PARIBAS FINANCIAL MARKETS | $334.9K | 157,248 | 0.00% | 13q | +427.4%+$271.4K |
| Point72 Asset Management, L.P. | $328.9K | 154,408 | 0.00% | new | NEW |
| Connor, Clark & Lunn Investment Management Ltd. | $328.6K | 154,292 | 0.00% | new | NEW |
| Man Group plc | $325.3K | 152,713 | 0.00% | new | NEW |
| Jain Global LLC | $280.1K | 131,502 | 0.00% | new | NEW |
| TWO SIGMA INVESTMENTS, LP | $272.3K | 127,849 | 0.00% | 26q | -42.8%-$203.8K |
| NORTHERN TRUST CORP | $231.9K | 108,888 | 0.00% | 31q | -70.9%-$566.4K |
| JPMORGAN CHASE & CO | $224.6K | 109,578 | 0.00% | 15q | +373.2%+$177.2K |
| KENNEDY CAPITAL MANAGEMENT LLC | $208.2K | 97,726 | 0.00% | 11q | +1.9%+$4.0K |
| CANADA PENSION PLAN INVESTMENT BOARD | $200.9K | 94,300 | 0.00% | 3q | +98.9%+$99.9K |
| Squarepoint Ops LLC | $200.3K | 94,048 | 0.00% | new | NEW |
| GROUP ONE TRADING LLC | $196.0K | options only | 0.00% | 25q | OPTIONS |
| Russell Investments Group, Ltd. | $192.4K | 90,353 | 0.00% | 6q | +7.2%+$12.9K |
| Mariner, LLC | $192.4K | 90,339 | 0.00% | 5q | -1.7%-$3.3K |
| ROYAL BANK OF CANADA | $170.0K | 79,783 | 0.00% | 27q | +5732.1%+$167.1K |
| MERCER GLOBAL ADVISORS INC /ADV | $157.2K | 73,802 | 0.00% | 4q | +95.5%+$76.8K |
| Cerity Partners LLC | $154.9K | 72,712 | 0.00% | 5q | -10.5%-$18.1K |
| Chicago Partners Investment Group LLC | $130.2K | 83,984 | 0.00% | 2q | +330.2%+$99.9K |
| CAPTRUST FINANCIAL ADVISORS | $110.3K | 51,778 | 0.00% | 13q | -2.2%-$2.5K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $98.4K | 47,518 | 0.00% | 6q | -22.2%-$28.1K |
| Quadrature Capital Ltd | $98.1K | 46,044 | 0.00% | new | NEW |
| Graham Capital Management, L.P. | $92.8K | 43,556 | 0.00% | 4q | -15.6%-$17.1K |
| INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC | $89.3K | 36,750 | 0.01% | 23q | -1.6%-$1.5K |
| Creative Planning | $81.4K | 38,200 | 0.00% | 6q | +32.3%+$19.9K |
| AlphaCentric Advisors LLC | $80.2K | 37,656 | 0.07% | 4q | +1.4%+$1.1K |
| SIMPLEX TRADING, LLC | $74.2K | 28,957 | 0.00% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $72.3K | 33,925 | 0.00% | 23q | -84.2%-$386.4K |
| Merit Financial Group, LLC | $71.0K | 33,328 | 0.00% | 2q | +69.4%+$29.1K |
| TWO SIGMA SECURITIES, LLC | $69.9K | 32,818 | 0.01% | new | NEW |
| Arax Advisory Partners | $61.0K | 28,634 | 0.00% | 4q | +5915.5%+$60.0K |
| STATE OF WISCONSIN INVESTMENT BOARD | $60.5K | 28,400 | 0.00% | new | NEW |
| Providence Wealth Advisors, LLC | $58.9K | 25,000 | 0.03% | 11q | HELD |
| RHUMBLINE ADVISERS | $56.8K | 26,652 | 0.00% | 13q | -61.5%-$90.6K |
| Schonfeld Strategic Advisors LLC | $44.6K | 20,920 | 0.00% | new | NEW |
| SEI INVESTMENTS CO | $44.2K | 20,739 | 0.00% | new | NEW |
| Federation des caisses Desjardins du Quebec | $38.6K | 18,106 | 0.00% | 25q | HELD |
| FMR LLC | $38.1K | 17,889 | 0.00% | 18q | +8.4%+$3.0K |
| Vanguard Global Advisers, LLC | $37.7K | 17,687 | 0.00% | 2q | HELD |
| LETKO, BROSSEAU & ASSOCIATES INC | $36.8K | 17,300 | 0.00% | 7q | HELD |
| Y-Intercept (Hong Kong) Ltd | $36.4K | 17,084 | 0.00% | new | NEW |
| BRIGHTON JONES LLC | $34.4K | 16,144 | 0.00% | 2q | -27.3%-$12.9K |
| StoneX Group Inc. | $33.1K | 19,296 | 0.00% | new | NEW |
| Activest Wealth Management | $31.9K | 15,000 | 0.01% | 9q | +275.0%+$23.4K |
| Cetera Investment Advisers | $31.3K | 14,699 | 0.00% | new | NEW |
| Focus Partners Wealth | $29.5K | 13,863 | 0.00% | 2q | -37.3%-$17.5K |
| LPL Financial LLC | $28.4K | 13,316 | 0.00% | 11q | -43.1%-$21.5K |
| INSPIRION WEALTH ADVISORS, LLC | $24.3K | 10,000 | 0.00% | 3q | HELD |
| Caitong International Asset Management Co., Ltd | $23.1K | 10,863 | 0.00% | new | NEW |
| Global Retirement Partners, LLC | $21.3K | 10,000 | 0.00% | 2q | HELD |
| Integrated Wealth Concepts LLC | $18.7K | 8,765 | 0.00% | 2q | -41.4%-$13.2K |
| BARCLAYS PLC | $12.3K | 5,769 | 0.00% | 16q | -41.8%-$8.8K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $10.3K | 4,825 | 0.00% | 3q | HELD |
| Farther Finance Advisors, LLC | $9.6K | 4,497 | 0.00% | 11q | +1.1% |
| EverSource Wealth Advisors, LLC | $8.6K | 4,027 | 0.00% | 7q | -4.5% |
| Optiver Holding B.V. | $8.6K | 4,022 | 0.00% | 4q | -11.9%-$1.2K |
| Essential Partners LLC | $4.4K | 2,070 | 0.00% | 5q | -94.2%-$72.0K |
| RAFFA WEALTH MANAGEMENT, LLC | $4.0K | 1,897 | 0.00% | 7q | HELD |
| Allworth Financial LP | $3.9K | 1,827 | 0.00% | 5q | -12.4% |
| PNC Financial Services Group, Inc. | $3.4K | 1,575 | 0.00% | 9q | +326.8%+$2.6K |
| SBI Securities Co., Ltd. | $3.0K | 1,423 | 0.00% | 7q | +441.1%+$2.5K |
| IFP Advisors, Inc | $3.0K | 1,407 | 0.00% | 5q | -2.4% |
| ACADIAN ASSET MANAGEMENT LLC | $2.3K | 1,063,793 | 0.00% | 11q | +23.9% |
| GSA CAPITAL PARTNERS LLP | $1.0K | 472,564 | 0.06% | 5q | +91.2% |
| ROTHSCHILD INVESTMENT LLC | $756 | 355 | 0.00% | 5q | -1.4% |
| CITIGROUP INC | $697 | 327 | 0.00% | 31q | -89.5%-$5.9K |
| GAMMA Investing LLC | $682 | 320 | 0.00% | 6q | -71.4%-$1.7K |
| True Wealth Design, LLC | $665 | 312 | 0.00% | 7q | +97.5% |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-12 | 13G | AQR Capital Management, LLCwith 1 co-filers | 6.2% |
| 2026-07-27 | 13G/A | BlackRock, Inc. | 1.7% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 103 | $77.2M | 35,478,267 | 17 | 31 | 40 | 2.1% |
| Q1 2026 | 121 | $63.2M | 35,962,880 | 15 | 48 | 34 | 3.4% |
| Q4 2025 | 131 | $202.3M | 37,738,261 | 20 | 36 | 48 | 3.4% |
| Q3 2025 | 123 | $201.4M | 38,002,098 | 24 | 50 | 22 | 1.5% |
| Q2 2025 | 115 | $130.7M | 33,824,381 | 16 | 40 | 32 | 0.9% |
| Q1 2025 | 121 | $233.2M | 37,670,415 | 23 | 22 | 42 | 3.8% |
| Q4 2024 | 111 | $192.9M | 37,079,778 | 18 | 33 | 20 | 4.1% |
| Q3 2024 | 107 | $196.7M | 36,069,346 | 20 | 31 | 23 | 1.1% |
| Q2 2024 | 95 | $116.0M | 34,770,200 | 15 | 31 | 28 | 0.8% |
| Q1 2024 | 92 | $114.1M | 34,672,866 | 13 | 26 | 28 | 0.6% |
| Q4 2023 | 91 | $122.1M | 34,570,674 | 16 | 21 | 39 | 0.6% |
| Q3 2023 | 107 | $250.1M | 37,005,523 | 13 | 34 | 30 | 1.2% |
| Q2 2023 | 107 | $333.5M | 38,219,907 | 38 | 30 | 23 | 4.0% |
| Q1 2023 | 98 | $350.3M | 34,337,743 | 15 | 32 | 23 | 2.7% |
| Q4 2022 | 82 | $212.5M | 30,125,806 | 17 | 18 | 27 | 1.3% |
| Q3 2022 | 90 | $214.4M | 39,369,496 | 16 | 21 | 31 | 1.9% |
| Q2 2022 | 91 | $149.9M | 36,950,591 | 19 | 23 | 29 | 1.6% |
| Q1 2022 | 106 | $180.1M | 38,649,871 | 11 | 32 | 39 | 4.6% |
| Q4 2021 | 118 | $202.4M | 46,604,429 | 20 | 41 | 32 | 7.6% |
| Q3 2021 | 118 | $370.2M | 39,741,910 | 15 | 29 | 40 | 5.7% |
| Q2 2021 | 139 | $638.5M | 55,194,647 | 47 | 44 | 29 | 1.7% |
| Q1 2021 | 109 | $385.8M | 31,721,465 | 34 | 31 | 24 | 2.4% |
| Q4 2020 | 97 | $159.2M | 22,476,981 | 20 | 27 | 24 | 2.5% |
| Q3 2020 | 85 | $177.5M | 23,807,865 | 27 | 28 | 20 | 0.7% |
| Q2 2020 | 82 | $62.2M | 14,786,359 | 32 | 19 | 26 | 0.9% |
| Q1 2020 | 69 | $41.5M | 16,773,338 | 10 | 20 | 24 | 0.2% |
| Q4 2019 | 77 | $105.4M | 18,031,404 | 15 | 30 | 16 | 0.6% |
| Q3 2019 | 70 | $89.3M | 16,895,253 | 5 | 27 | 18 | 0.3% |
| Q2 2019 | 76 | $103.8M | 16,981,759 | 15 | 30 | 15 | 1.8% |
| Q1 2019 | 81 | $155.4M | 16,361,422 | 21 | 30 | 21 | 4.9% |
| Q4 2018 | 76 | $144.0M | 17,403,506 | 2 | 1 | 1 | 0.4% |