Aldeyra Therapeutics, Inc.
US ˙ NasdaqCM ˙ US01438T1060

SecurityALDX / Aldeyra Therapeutics, Inc.
InstitutionBarclays Plc
Latest Disclosed Ownership84,471 shares
Latest Disclosed Value $ 437,560
Barclays Plc reports 10.21% increase in ownership of ALDX / Aldeyra Therapeutics, Inc.

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 84,471 shares of Aldeyra Therapeutics, Inc. (US:ALDX) valued at $437,560 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 76,644 shares of Aldeyra Therapeutics, Inc.. This represents a change in shares of 10.21% during the quarter. The current value of the position is $137,688 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F ALDEYRA THERAPEUTICS COM 01438T106 84,471 7,827 10.21 438 9.25 0.0001
2026-03-31 2025-09-30 13F/A-3 ALDEYRA THERAPEUTICS COM 01438T106 76,644 -19,004 -19.87 400 9.29 0.0001
2026-03-19 2025-09-30 13F/A-2 ALDEYRA THERAPEUTICS COM 01438T106 65,561 -30,087 353 0.0001
2025-11-12 2025-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 76,644 -19,004 400 0.0001
2026-02-27 2025-06-30 13F/A-2 ALDEYRA THERAPEUTICS COM 01438T106 95,648 44,691 87.70 366 24.91 0.0001
2025-08-14 2025-06-30 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 95,648 44,691 0 0.0001
2025-08-13 2025-06-30 13F ALDEYRA THERAPEUTICS COM 01438T106 95,648 44,691 0 0.0000
2026-03-17 2025-03-31 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 50,957 -24,373 -32.35 293 -21.87 0.0001
2025-05-15 2025-03-31 13F ALDEYRA THERAPEUTICS COM 01438T106 50,957 -24,373 0 0.0001
2026-03-19 2024-12-31 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 75,330 9,769 14.90 376 6.23 0.0001
2025-02-13 2024-12-31 13F ALDEYRA THERAPEUTICS COM 01438T106 75,330 9,769 0 0.0001
2026-03-31 2024-09-30 13F/A-2 ALDEYRA THERAPEUTICS COM 01438T106 65,561 48,313 280.11 353 519.30 0.0001
2024-11-19 2024-09-30 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 65,561 48,313 0 0.0001
2024-11-15 2024-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 65,561 48,313 0 0.0000
2026-03-23 2024-06-30 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 17,248 -15,239 -46.91 57 -46.23 0.0000
2024-08-14 2024-06-30 13F ALDEYRA THERAPEUTICS COM 01438T106 17,248 -15,239 0 0.0000
2026-03-24 2024-03-31 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 32,487 -31,368 -49.12 106 -52.68 0.0000
2024-05-15 2024-03-31 13F ALDEYRA THERAPEUTICS COM 01438T106 32,487 -31,368 0 0.0000
2026-03-25 2023-12-31 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 63,855 -74,456 -53.83 224 -75.73 0.0001
2024-02-15 2023-12-31 13F ALDEYRA THERAPEUTICS COM 01438T106 63,855 -74,456 0 0.0001
2026-03-26 2023-09-30 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 138,311 11,447 9.02 924 -13.25 0.0006
2023-11-07 2023-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 138,311 11,447 1 0.0006
2026-03-30 2023-06-30 13F/A-2 ALDEYRA THERAPEUTICS COM 01438T106 126,864 110,039 654.02 1,064 537.13 0.0007
2023-09-20 2023-06-30 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 126,864 110,039 1 0.0007
2023-08-03 2023-06-30 13F ALDEYRA THERAPEUTICS COM 01438T106 126,864 110,039 1 0.0007
2026-03-30 2023-03-31 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 16,825 -12,954 -43.50 167 -19.32 0.0001
2023-05-04 2023-03-31 13F ALDEYRA THERAPEUTICS COM 01438T106 16,825 -12,954 0 0.0001
2026-03-30 2022-12-31 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 29,779 20,844 233.28 207 331.25 0.0001
2023-02-13 2022-12-31 13F ALDEYRA THERAPEUTICS COM 01438T106 29,779 20,844 0 0.0001
2022-11-03 2022-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 8,935 8,935 48 0.0001
2022-08-12 2022-06-30 13F ALDEYRA THERAPEUTICS COM 01438T106 0 -150,981 -100.00 0 -100.00
2022-05-16 2022-03-31 13F ALDEYRA THERAPEUTICS COM 01438T106 150,981 92,072 156.30 671 184.32 0.0005
2022-02-23 2021-12-31 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 58,909 15,028 34.25 236 -38.86 0.0001
2022-02-14 2021-12-31 13F ALDEYRA THERAPEUTICS COM 01438T106 58,909 15,028 236 0.0000
2021-11-09 2021-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 43,881 15,186 52.92 386 18.77 0.0002
2021-08-13 2021-06-30 13F ALDEYRA THERAPEUTICS COM 01438T106 28,695 -22,050 -43.45 325 -46.10 0.0002
2021-05-13 2021-03-31 13F ALDEYRA THERAPEUTICS COM 01438T106 50,745 50,745 76.84 603 85.54 0.0003
2020-11-12 2020-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 0 -6,451 -100.00 0 -100.00
2020-08-12 2020-06-30 13F ALDEYRA THERAPEUTICS COM 01438T106 6,451 -1,170 -15.35 27 42.11 0.0000
2020-05-13 2020-03-31 13F ALDEYRA THERAPEUTICS COM 01438T106 7,621 -15,305 -66.76 19 -85.71 0.0000
2020-02-10 2019-12-31 13F ALDEYRA THERAPEUTICS COM 01438T106 22,926 11,737 104.90 133 125.42 0.0001
2019-11-15 2019-09-30 13F/A-1 ALDEYRA THERAPEUTICS COM 01438T106 11,189 -3,352 -23.05 59 -32.18 0.0000
2019-11-14 2019-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 11,189 -3,352 59 13.6409
2019-08-14 2019-06-30 13F ALDEYRA THERAPEUTICS COM 01438T106 14,541 6,342 77.35 87 17.57 0.0001
2019-05-15 2019-03-31 13F ALDEYRA THERAPEUTICS COM 01438T106 8,199 1,759 27.31 74 39.62 0.0001
2019-02-14 2018-12-31 13F ALDEYRA THERAPEUTICS COM 01438T106 6,440 73 1.15 53 -39.77 0.0000
2018-11-14 2018-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 6,367 5,199 445.12 88 877.78 0.0001
2018-08-14 2018-06-30 13F ALDEYRA THERAPEUTICS COM 01438T106 1,168 1,167 116,700.00 9 -89.77 0.0000
2018-05-15 2018-03-31 13F ALDEYRA THERAPEUTICS COM 01438T106 1 1 -99.91 0 -100.00 0.0000
2018-02-14 2017-12-31 13F ALDEYRA THERAPEUTICS COM 01438T106 0 -3,400 -100.00 0 -100.00
2017-11-14 2017-09-30 13F ALDEYRA THERAPEUTICS COM 01438T106 3,400 3,400 24 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.