| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 7% | -19% | $17,286,660 | -$4,281,484 | 4,185,632 | -20% | Perceptive Advisors LLC | 31 Dec 2025 |
As of 31 Dec 2025, 134 institutional investors reported holding 38,929,706 shares of Aldeyra Therapeutics, Inc. - Common Stock, par value $0.001 per share (ALDX). This represents 65% of the company’s total 59,794,743 outstanding shares.
The largest institutional shareholders of Aldeyra Therapeutics, Inc. - Common Stock, par value $0.001 per share (ALDX) together control 58% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Knoll Capital Management, LLC | 9.2% | 5,475,516 | 0% | 13% | $28,363,172 |
| PERCEPTIVE ADVISORS LLC | 7% | 4,185,632 | -20% | 0.4% | $21,681,574 |
| BlackRock, Inc. | 6.4% | 3,850,103 | +1.2% | 0% | $19,943,533 |
| VANGUARD GROUP INC | 6.2% | 3,698,682 | +3% | 0% | $19,159,173 |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | 3.1% | 1,850,000 | +39% | 1.5% | $9,583,000 |
| D. E. Shaw & Co., Inc. | 2.7% | 1,601,324 | +16% | 0.01% | $8,294,858 |
| 683 Capital Management, LLC | 2.6% | 1,530,000 | +87% | 0.66% | $7,925,400 |
| ARDSLEY ADVISORY PARTNERS LP | 2.4% | 1,450,000 | -24% | 0.96% | $7,511,000 |
| KENNEDY CAPITAL MANAGEMENT LLC | 2.1% | 1,255,838 | +13% | 0.14% | $6,505,241 |
| AQR CAPITAL MANAGEMENT LLC | 2.1% | 1,226,922 | -18% | 0% | $6,355,456 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 1,170,537 | -0.5% | 0% | $6,064,616 |
| STATE STREET CORP | 1.8% | 1,098,600 | -0.37% | 0% | $5,690,748 |
| ACADIAN ASSET MANAGEMENT LLC | 1.6% | 979,521 | +17% | 0.01% | $5,071,000 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1.6% | 968,751 | +2.2% | 0.02% | $5,018,130 |
| MORGAN STANLEY | 1.1% | 657,032 | -39% | 0% | $3,403,426 |
| DIMENSIONAL FUND ADVISORS LP | 1% | 612,258 | -5.6% | 0% | $3,171,391 |
| BANK OF AMERICA CORP /DE/ | 0.69% | 410,028 | +5.1% | 0% | $2,123,946 |
| NORTHERN TRUST CORP | 0.63% | 379,405 | -7% | 0% | $1,965,318 |
| WELLS FARGO & COMPANY/MN | 0.61% | 366,169 | +1.3% | 0% | $1,896,755 |
| RENAISSANCE TECHNOLOGIES LLC | 0.59% | 350,000 | +77% | 0% | $1,813,000 |
| DEUTSCHE BANK AG\ | 0.53% | 317,335 | +0.83% | 0% | $1,643,795 |
| GOLDMAN SACHS GROUP INC | 0.51% | 305,706 | +67% | 0% | $1,583,557 |
| JANE STREET GROUP, LLC | 0.51% | 303,852 | +21% | 0% | $1,573,954 |
| TWO SIGMA INVESTMENTS, LP | 0.48% | 287,364 | +5.2% | 0% | $1,488,546 |
| WOODSTOCK CORP | 0.45% | 266,756 | 0% | 0.12% | $1,381,796 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 38,929,706 | $201,592,852 | -$2,790,250 | $5.18 | 134 |
| 2025 Q3 | 39,235,813 | $204,754,194 | +$26,942,510 | $5.22 | 130 |
| 2025 Q2 | 34,234,495 | $131,165,420 | -$14,803,182 | $3.83 | 121 |
| 2025 Q1 | 37,522,553 | $215,581,662 | +$3,357,660 | $5.75 | 124 |
| 2024 Q4 | 37,181,780 | $185,566,183 | +$2,534,433 | $4.99 | 117 |
| 2024 Q3 | 36,411,204 | $196,355,871 | +$6,362,230 | $5.39 | 111 |
| 2024 Q2 | 35,332,656 | $116,899,840 | -$329,270 | $3.31 | 103 |
| 2024 Q1 | 35,411,236 | $115,798,928 | +$808,753 | $3.27 | 101 |
| 2023 Q4 | 35,121,957 | $123,276,317 | -$16,780,776 | $3.51 | 103 |
| 2023 Q3 | 37,775,090 | $252,308,601 | -$9,900,512 | $6.68 | 120 |
| 2023 Q2 | 39,037,773 | $327,514,881 | +$24,184,461 | $8.39 | 119 |
| 2023 Q1 | 35,585,837 | $353,348,951 | +$15,344,761 | $9.93 | 107 |
| 2022 Q4 | 34,171,691 | $237,833,495 | -$18,830,170 | $6.96 | 93 |
| 2022 Q3 | 36,966,565 | $197,399,795 | +$1,459,079 | $5.34 | 85 |
| 2022 Q2 | 36,943,694 | $147,408,805 | -$7,357,330 | $3.99 | 88 |
| 2022 Q1 | 38,636,557 | $171,807,935 | +$10,287,580 | $4.44 | 102 |
| 2021 Q4 | 36,272,402 | $145,130,796 | -$44,887,818 | $4.00 | 110 |
| 2021 Q3 | 39,720,964 | $348,695,759 | -$60,891,971 | $8.78 | 114 |
| 2021 Q2 | 45,258,901 | $512,794,552 | +$153,473,538 | $11.33 | 130 |
| 2021 Q1 | 31,692,851 | $376,513,639 | +$122,609,589 | $11.88 | 107 |
| 2020 Q4 | 22,091,649 | $151,541,784 | -$10,169,396 | $6.86 | 95 |
| 2020 Q3 | 23,807,765 | $176,308,405 | +$68,333,848 | $7.41 | 84 |
| 2020 Q2 | 14,645,367 | $61,066,116 | -$6,590,170 | $4.17 | 79 |
| 2020 Q1 | 16,769,610 | $41,415,535 | -$6,410,268 | $2.47 | 69 |
| 2019 Q4 | 17,701,121 | $102,840,148 | +$1,433,085 | $5.81 | 76 |
| 2019 Q3 | 16,864,477 | $88,888,097 | -$685,228 | $5.27 | 70 |
| 2019 Q2 | 16,888,317 | $101,327,468 | +$1,168,639 | $6.00 | 75 |
| 2019 Q1 | 16,361,337 | $147,746,642 | -$6,160,793 | $9.03 | 77 |
| 2018 Q4 | 17,157,946 | $141,481,000 | -$15,993,709 | $8.30 | 75 |
| 2018 Q3 | 18,046,261 | $248,653,190 | +$81,737,278 | $13.80 | 90 |
| 2018 Q2 | 12,131,183 | $96,444,142 | +$14,632,796 | $7.95 | 65 |
| 2018 Q1 | 10,285,308 | $77,138,000 | +$3,821,299 | $7.50 | 42 |
| 2017 Q4 | 9,777,889 | $66,488,000 | +$3,712,599 | $6.80 | 35 |
| 2017 Q3 | 9,221,517 | $66,394,000 | +$13,267,111 | $7.20 | 35 |
| 2017 Q2 | 7,437,286 | $34,736,000 | -$2,554,099 | $4.65 | 24 |
| 2017 Q1 | 7,897,813 | $37,958,000 | +$8,366,763 | $5.00 | 24 |
| 2016 Q4 | 6,136,618 | $32,831,000 | +$111,606 | $5.35 | 20 |
| 2016 Q3 | 6,112,780 | $47,882,100 | -$1,304,703 | $7.82 | 22 |
| 2016 Q2 | 6,358,443 | $36,177,450 | +$11,374,826 | $5.69 | 25 |
| 2016 Q1 | 4,372,667 | $18,317,243 | -$231,292 | $4.19 | 26 |
| 2015 Q4 | 4,427,755 | $30,018,000 | +$376,484 | $6.78 | 20 |
| 2015 Q3 | 4,330,050 | $25,241,000 | +$608,221 | $5.83 | 22 |
| 2015 Q2 | 4,225,512 | $32,853,000 | +$19,634,402 | $7.76 | 23 |
| 2015 Q1 | 1,691,795 | $17,415,000 | +$8,386,368 | $10.18 | 15 |
| 2014 Q4 | 870,129 | $6,277,000 | +$82,000 | $7.18 | 5 |
| 2014 Q3 | 859,337 | $5,163,000 | +$34,237 | $5.74 | 6 |
| 2014 Q2 | 852,047 | $5,639,000 | +$5,638,000 | $6.56 | 5 |