ALDEYRA THERAPEUTICS INC (ALDX) Institutional Shareholders
ALDEYRA THERAPEUTICS INC (ALDX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $61.12M in ALDX holdings during the latest filing period.
Knoll Capital Management, Llc is currently the largest disclosed institutional shareholder of ALDX tracked by InsiderSet, reporting ownership valued at approximately $9.25M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $8.43M, representing an estimated loss of -8.88% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 64% of the total disclosed ALDX value among the investors covered in this analysis. Major shareholders include Knoll Capital Management, Llc, Blackrock, Inc., Aqr Capital Management Llc, and several other long-term asset managers with concentrated positions in ALDEYRA THERAPEUTICS INC (ALDX).
This page ranks the largest institutional ALDX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
113
Total Reported Value
$61.12M
Largest Holder
Knoll Capital Management, Llc
Largest Position
$9.25M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
154
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Knoll Capital Management, Llc | 5.14% | 5,475,516 | $9,253,622 | $8,432,295 | -$821,327 | -8.88% | |
| Blackrock, Inc. | 0.00% | 3,763,887 | $6,360,969 | $5,796,386 | -$564,583 | -8.88% | |
| Aqr Capital Management Llc | 0.00% | 2,829,875 | $4,782,489 | $4,358,008 | -$424,482 | -8.88% | |
| Vanguard Capital Management Llc | 0.00% | 2,363,742 | $3,994,724 | $3,640,163 | -$354,561 | -8.88% | |
| Kingdon Capital Management, L.L.C. | 0.61% | 2,152,315 | $3,637,412 | $3,314,565 | -$322,847 | -8.88% | |
| 683 Capital Management, Llc | 0.24% | 1,500,000 | $2,534,999 | $2,310,000 | -$224,999 | -8.88% | |
| D. E. Shaw & Co., Inc. | 0.00% | 1,403,990 | $2,372,743 | $2,162,145 | -$210,598 | -8.88% | |
| Geode Capital Management, Llc | 0.00% | 1,251,652 | $2,115,714 | $1,927,544 | -$188,170 | -8.89% | |
| Ardsley Advisory Partners Lp | 0.23% | 975,000 | $2,076,750 | $1,501,500 | -$575,250 | -27.70% | |
| State Street Corp | 0.00% | 1,124,710 | $1,900,760 | $1,732,053 | -$168,707 | -8.88% | |
| Millennium Management Llc | 0.00% | 995,243 | $1,681,961 | $1,532,674 | -$149,287 | -8.88% | |
| Jane Street Group, Llc | 0.00% | 968,891 | $1,637,425 | $1,492,092 | -$145,333 | -8.88% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 863,187 | $1,458,786 | $1,329,308 | -$129,478 | -8.88% |
| Vanguard Portfolio Management Llc | 0.00% | 807,778 | $1,365,145 | $1,243,978 | -$121,167 | -8.88% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 796,816 | $1,346,619 | $1,227,097 | -$119,522 | -8.88% | |
| Propel Bio Management, Llc | 0.78% | 730,606 | $1,234,724 | $1,125,133 | -$109,591 | -8.88% | |
| Dimensional Fund Advisors Lp | 0.00% | 624,170 | $1,054,812 | $961,222 | -$93,590 | -8.87% | |
| Goldman Sachs Group Inc | 0.00% | 543,146 | $917,917 | $836,445 | -$81,472 | -8.88% | |
| Ubs Group Ag | 0.00% | 537,569 | $908,492 | $827,856 | -$80,636 | -8.88% | |
| Morgan Stanley | 0.00% | 518,642 | $876,505 | $798,709 | -$77,796 | -8.88% | |
| Northern Trust Corp | 0.00% | 374,812 | $633,433 | $577,210 | -$56,223 | -8.88% | |
| Vanguard Fiduciary Trust Co | 0.00% | 338,621 | $572,269 | $521,476 | -$50,793 | -8.88% | |
| Woodstock Corp | 0.04% | 242,756 | $517,070 | $373,844 | -$143,226 | -27.70% | |
| Susquehanna International Group, Llp | 0.00% | 278,442 | $470,567 | $428,801 | -$41,766 | -8.88% | |
| Ieq Capital, Llc | 0.00% | 266,518 | $450,415 | $410,438 | -$39,977 | -8.88% | |
| Citadel Advisors Llc | 0.00% | 266,340 | $450,115 | $410,164 | -$39,951 | -8.88% | |
| Two Sigma Investments, Lp | 0.00% | 223,537 | $377,778 | $344,247 | -$33,531 | -8.88% | |
| Bank Of America Corp | 0.00% | 215,332 | $363,911 | $331,611 | -$32,300 | -8.88% | |
| Alliancebernstein L.P. | 0.00% | 68,140 | $352,965 | $104,936 | -$248,029 | -70.27% | |
| Wells Fargo & Company/Mn | 0.00% | 189,729 | $320,643 | $292,183 | -$28,460 | -8.88% | |
| Invesco Ltd. | 0.00% | 169,698 | $286,790 | $261,335 | -$25,455 | -8.88% | |
| Exoduspoint Capital Management, Lp | 0.00% | 167,604 | $283,251 | $258,110 | -$25,141 | -8.88% | |
| Caption Management, Llc | 0.01% | 165,000 | $278,850 | $254,100 | -$24,750 | -8.88% | |
| Palo Alto Investors Lp | 0.04% | 155,709 | $263,148 | $239,792 | -$23,356 | -8.88% | |
| Wellington Management Group Llp | 0.00% | 148,962 | $251,746 | $229,401 | -$22,345 | -8.88% | |
| Charles Schwab Investment Management Inc | 0.00% | 139,029 | $234,959 | $214,105 | -$20,854 | -8.88% | |
| Bank Of New York Mellon Corp | 0.00% | 136,746 | $231,101 | $210,589 | -$20,512 | -8.88% | |
| Marshall Wace, Llp | 0.00% | 129,693 | $219,181 | $199,727 | -$19,454 | -8.88% | |
| Kennedy Capital Management Llc | 0.00% | 95,862 | $162,007 | $147,627 | -$14,380 | -8.88% | |
| Mariner, Llc | 0.00% | 91,870 | $155,260 | $141,480 | -$13,780 | -8.88% | |
| Cwm, Llc | 0.00% | 91,623 | $154,843 | $141,099 | -$13,744 | -8.88% | |
| Fox Run Management, L.L.C. | 0.03% | 90,964 | $152,820 | $140,085 | -$12,735 | -8.33% | |
| Qube Research & Technologies Ltd | 0.00% | 87,078 | $147,162 | $134,100 | -$13,062 | -8.88% | |
| Russell Investments Group, Ltd. | 0.00% | 84,300 | $142,466 | $129,822 | -$12,644 | -8.88% | |
| Cerity Partners Llc | 0.00% | 81,223 | $137,268 | $125,083 | -$12,185 | -8.88% | |
| Chicago Partners Investment Group Llc | 0.00% | 83,984 | $130,175 | $129,335 | -$840 | -0.65% | |
| Xtx Topco Ltd | 0.00% | 75,166 | $127,031 | $115,756 | -$11,275 | -8.88% | |
| Rhumbline Advisers | 0.00% | 69,205 | $116,945 | $106,576 | -$10,369 | -8.87% | |
| Wealth Enhancement Advisory Services, Llc | 0.00% | 47,518 | $98,362 | $73,178 | -$25,184 | -25.60% | |
| Captrust Financial Advisors | 0.00% | 52,947 | $89,479 | $81,538 | -$7,941 | -8.87% |
Frequently asked questions about ALDX
Who owns the most ALDX stock?
The largest holders of ALDX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ALDEYRA THERAPEUTICS INC (ALDX).
Is ALDX widely held by superinvestors?
Many widely followed stocks like ALDX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ALDX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.