ALDX Institutional Ownership & Shareholders
ALDEYRA THERAPEUTICS INC (ALDX) is currently held by 102 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $77.09M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Knoll Capital Management, Llc is currently the largest disclosed institutional shareholder of ALDX tracked by InsiderSet, reporting ownership valued at approximately $11.66M in its June 30, 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 $3.19M, representing an estimated loss of -72.62% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 63% of the total disclosed ALDX value among the investors covered in this analysis. Major shareholders include Knoll Capital Management, Llc, Aqr Capital Management Llc, Kingdon Capital Management, L.L.C., 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
102
Total Reported Value
$77.09M
Largest Holder
Knoll Capital Management, Llc
Largest Position
$11.66M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
129
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 | 5.44% | 5,475,516 | $11,662,849 | $3,193,321 | -$8,469,528 | -72.62% | |
| Aqr Capital Management Llc | 0.00% | 3,751,558 | $7,990,819 | $2,187,909 | -$5,802,910 | -72.62% | |
| Kingdon Capital Management, L.L.C. | 0.76% | 2,652,315 | $5,649,431 | $1,546,830 | -$4,102,601 | -72.62% | |
| Vanguard Capital Management Llc | 0.00% | 2,361,796 | $5,030,625 | $1,377,399 | -$3,653,226 | -72.62% | |
| D. E. Shaw & Co., Inc. | 0.00% | 1,940,338 | $4,132,920 | $1,131,605 | -$3,001,315 | -72.62% | |
| Marshall Wace, Llp | 0.00% | 1,506,974 | $3,209,855 | $878,867 | -$2,330,988 | -72.62% | |
| 683 Capital Management, Llc | 0.28% | 1,450,000 | $3,088,500 | $845,640 | -$2,242,860 | -72.62% | |
| Jane Street Group, Llc | 0.00% | 1,375,115 | $2,928,995 | $801,967 | -$2,127,028 | -72.62% | |
| Blackrock, Inc. | 0.00% | 1,257,243 | $2,677,927 | $733,224 | -$1,944,703 | -72.62% | |
| Qube Research & Technologies Ltd | 0.00% | 1,128,803 | $2,404,350 | $658,318 | -$1,746,032 | -72.62% | |
| Acadian Asset Management Llc | 0.00% | 1,063,793 | $2,262,000 | $620,404 | -$1,641,596 | -72.57% | |
| Ardsley Advisory Partners Lp | 0.23% | 975,000 | $2,076,750 | $568,620 | -$1,508,130 | -72.62% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 882,000 | $1,878,660 | $514,382 | -$1,364,278 | -72.62% |
| Vanguard Portfolio Management Llc | 0.00% | 794,863 | $1,693,058 | $463,564 | -$1,229,494 | -72.62% | |
| Goldman Sachs Group Inc | 0.00% | 725,444 | $1,545,196 | $423,079 | -$1,122,117 | -72.62% | |
| Jacobs Levy Equity Management, Inc | 0.00% | 646,840 | $1,377,769 | $377,237 | -$1,000,532 | -72.62% | |
| Morgan Stanley | 0.00% | 608,321 | $1,295,723 | $354,773 | -$940,950 | -72.62% | |
| Geode Capital Management, Llc | 0.00% | 596,029 | $1,270,111 | $347,604 | -$922,507 | -72.63% | |
| Dimensional Fund Advisors Lp | 0.00% | 529,083 | $1,126,664 | $308,561 | -$818,103 | -72.61% | |
| Gsa Capital Partners Llp | 0.06% | 472,564 | $1,007,000 | $275,599 | -$731,401 | -72.63% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 421,178 | $897,109 | $245,631 | -$651,478 | -72.62% | |
| Citadel Advisors Llc | 0.00% | 379,144 | $807,576 | $221,117 | -$586,459 | -72.62% | |
| Millennium Management Llc | 0.00% | 360,350 | $767,546 | $210,156 | -$557,390 | -72.62% | |
| Ubs Group Ag | 0.00% | 301,940 | $643,132 | $176,091 | -$467,041 | -72.62% | |
| Vanguard Fiduciary Trust Co | 0.00% | 298,242 | $635,255 | $173,935 | -$461,320 | -72.62% | |
| Xtx Topco Ltd | 0.01% | 254,777 | $542,675 | $148,586 | -$394,089 | -72.62% | |
| State Street Corp | 0.00% | 233,774 | $497,939 | $136,337 | -$361,602 | -72.62% | |
| Ieq Capital, Llc | 0.00% | 206,593 | $440,043 | $120,485 | -$319,558 | -72.62% | |
| Cantor Fitzgerald, L. P. | 0.01% | 200,000 | $426,000 | $116,640 | -$309,360 | -72.62% | |
| Caption Management, Llc | 0.01% | 165,000 | $351,450 | $96,228 | -$255,222 | -72.62% | |
| Wells Fargo & Company/Mn | 0.00% | 162,336 | $345,776 | $94,674 | -$251,102 | -72.62% | |
| Invesco Ltd. | 0.00% | 159,540 | $339,820 | $93,044 | -$246,776 | -72.62% | |
| Bnp Paribas Financial Markets | 0.00% | 157,248 | $334,938 | $91,707 | -$243,231 | -72.62% | |
| Palo Alto Investors Lp | 0.05% | 155,709 | $331,660 | $90,809 | -$240,851 | -72.62% | |
| Point72 Asset Management, L.P. | 0.00% | 154,408 | $328,889 | $90,051 | -$238,838 | -72.62% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 154,292 | $328,642 | $89,983 | -$238,659 | -72.62% | |
| Man Group Plc | 0.00% | 152,713 | $325,279 | $89,062 | -$236,217 | -72.62% | |
| Woodstock Corp | 0.02% | 242,756 | $298,590 | $141,575 | -$157,015 | -52.59% | |
| Jain Global Llc | 0.00% | 131,502 | $280,099 | $76,692 | -$203,407 | -72.62% | |
| Two Sigma Investments, Lp | 0.00% | 127,849 | $272,318 | $74,562 | -$197,756 | -72.62% | |
| Northern Trust Corp | 0.00% | 108,888 | $231,932 | $63,503 | -$168,429 | -72.62% | |
| Jpmorgan Chase & Co | 0.00% | 109,578 | $224,635 | $63,906 | -$160,729 | -71.55% | |
| Kennedy Capital Management Llc | 0.00% | 97,726 | $208,156 | $56,994 | -$151,162 | -72.62% | |
| Canada Pension Plan Investment Board | 0.00% | 94,300 | $200,859 | $54,996 | -$145,863 | -72.62% | |
| Squarepoint Ops Llc | 0.00% | 94,048 | $200,322 | $54,849 | -$145,473 | -72.62% | |
| Russell Investments Group, Ltd. | 0.00% | 90,353 | $192,450 | $52,694 | -$139,756 | -72.62% | |
| Mariner, Llc | 0.00% | 90,339 | $192,367 | $52,686 | -$139,681 | -72.61% | |
| Royal Bank Of Canada | 0.00% | 79,783 | $170,000 | $46,529 | -$123,471 | -72.63% | |
| Cerity Partners Llc | 0.00% | 72,712 | $154,877 | $42,406 | -$112,471 | -72.62% | |
| Cwm, Llc | 0.00% | 91,623 | $154,843 | $53,435 | -$101,408 | -65.49% |
Frequently asked questions about ALDX
Who are the largest institutional holders of ALDX?
The largest institutional holders of ALDX reported in the latest SEC Form 13F filings include Knoll Capital Management, Llc, Aqr Capital Management Llc, Kingdon Capital Management, L.L.C., Vanguard Capital Management Llc, and D. E. Shaw & Co., Inc.. InsiderSet ranks institutional holders by their latest reported ALDX position.
What is ALDX institutional ownership?
This page tracks ALDX positions reported by institutional investment managers through SEC Form 13F. ALDEYRA THERAPEUTICS INC (ALDX) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ALDX?
InsiderSet currently tracks 102 institutional managers reporting ALDX holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of ALDX shareholders.
How much ALDX stock do institutions own?
Institutional investment managers disclosed approximately $77.09M in ALDX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ALDX institutional ownership last updated?
The latest ALDX institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional ALDX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its ALDX position after the reporting date.
Are institutions buying or selling ALDX?
Institutional buying and selling can be analyzed by comparing ALDX positions across consecutive 13F reporting periods. InsiderSet's ALDX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ALDX ownership changes.
How has ALDX institutional ownership changed over time?
InsiderSet tracks ALDX institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.