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Equibles

ALDX

Aldeyra Therapeutics, Inc.

Company with tickers: ALDX

CIK
1341235
CUSIP
01438T106
Shares Outstanding
60,321,068
13F Activity (30d)
97 filings 92 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 125
Total Value: $64,693,370
Total Shares: 38,280,149
Showing 1–100 of 132 holdings by value · page 1 of 2

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 125 13F filers · Δ vs Dec 31, 2025
Top Holder
14.3%
Jun 2023 → Mar 2026 · range 13.8% – 29.8%
+0.5 pts
Top 5
43.3%
Jun 2023 → Mar 2026 · range 43.3% – 66.7%
−4.6 pts
Top 10
60.4%
Jun 2023 → Mar 2026 · range 60.4% – 79.3%
−5.4 pts
HHI
542
Jun 2023 → Mar 2026 · range 542 – 1,216
Broadly held −70

Quarterly Activity

vs Dec 31, 2025
New
21
Increased
51
Decreased
37
Sold Out
33
Unchanged
16
Holder count: -12
Institutional value: -68.6%
Shares held: -3.8%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega AQR CAPITAL MANAGEMENT LLC +1,602,953 2,829,875
Mega MILLENNIUM MANAGEMENT LLC +951,184 995,243
Mega JANE STREET GROUP, LLC +757,639 1,140,991
Large RENAISSANCE TECHNOLOGIES LLC +513,187 863,187
Mega UBS Group AG +441,892 537,569

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mid KENNEDY CAPITAL MANAGEMENT LLC −1,159,976 95,862
Mega DEUTSCHE BANK AG\ −267,064 50,271
Small ARDSLEY ADVISORY PARTNERS LP −250,000 1,250,000
Mega BNP PARIBAS ARBITRAGE, SA −233,592 29,815
Mega D. E. Shaw & Co., Inc. −197,334 1,403,990

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 2,363,742 $3,994,723
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 807,778 $1,365,144
Small Propel Bio Management, LLC 730,606 $1,234,724
Mega VANGUARD FIDUCIARY TRUST CO 338,621 $572,269
Large HRT FINANCIAL LP 286,444 $484,090

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mid PERCEPTIVE ADVISORS LLC 4,185,632 $21,681,573
Mega VANGUARD GROUP INC 3,698,682 $19,159,171
Small 1492 Capital Management LLC 223,317 $1,156,782
Large TWO SIGMA ADVISERS, LP 121,900 $631,442
Large Point72 Asset Management, L.P. 94,094 $487,406
Filter: New 21 Increased 51 Reduced 37 Sold out 33 Unchanged 16
Showing 100 of 132
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Small Knoll Capital Management, LLC $9,253,622 14.30% 5,475,516
Mega BlackRock, Inc. $6,360,967 9.83% 3,763,887
Mega AQR CAPITAL MANAGEMENT LLC $4,782,486 7.39% 2,829,875
Mega VANGUARD CAPITAL MANAGEMENT LLC $3,994,723 6.17% 2,363,742
Small KINGDON CAPITAL MANAGEMENT, L.L.C. $3,637,412 5.62% 2,152,315
Mid 683 Capital Management, LLC $2,535,000 3.92% 1,500,000
Mega D. E. Shaw & Co., Inc. $2,372,743 3.67% 1,403,990
Mega GEODE CAPITAL MANAGEMENT, LLC $2,115,291 3.27% 1,251,652
Mega STATE STREET CORP $1,900,759 2.94% 1,124,710
Mega MILLENNIUM MANAGEMENT LLC $1,681,960 2.60% 995,243
Mega JANE STREET GROUP, LLC $1,637,425 2.53% 968,891
Small ARDSLEY ADVISORY PARTNERS LP $1,605,500 2.48% 950,000
Large RENAISSANCE TECHNOLOGIES LLC $1,458,786 2.25% 863,187
Large ACADIAN ASSET MANAGEMENT LLC $1,450,506 2.24% 858,288
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $1,365,144 2.11% 807,778
Large JACOBS LEVY EQUITY MANAGEMENT, INC $1,346,619 2.08% 796,816
Small Propel Bio Management, LLC $1,234,724 1.91% 730,606
Mega DIMENSIONAL FUND ADVISORS LP $1,054,846 1.63% 624,170
Mega GOLDMAN SACHS GROUP INC $917,916 1.42% 543,146
Mega UBS Group AG $908,490 1.40% 537,569
Mega MORGAN STANLEY $876,502 1.35% 518,642
Mega NORTHERN TRUST CORP Bank $633,431 0.98% 374,812
Mega VANGUARD FIDUCIARY TRUST CO Bank $572,269 0.88% 338,621
Small ARDSLEY ADVISORY PARTNERS LP $507,000 0.78% 300,000
Large HRT FINANCIAL LP $484,090 0.75% 286,444
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $470,566 0.73% 278,442
Mid WOODSTOCK CORP $450,817 0.70% 266,756
Large IEQ CAPITAL, LLC $450,415 0.70% 266,518
Mega CITADEL ADVISORS LLC $450,114 0.70% 266,340
Mid GSA CAPITAL PARTNERS LLP $417,757 0.65% 247,194
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $395,460 0.61% 234,000
Mega TWO SIGMA INVESTMENTS, LP $377,777 0.58% 223,537
Mega BANK OF AMERICA CORP /DE/ Bank $363,911 0.56% 215,332
Mega WELLS FARGO & COMPANY/MN $320,641 0.50% 189,729
Mega Invesco Ltd. $286,788 0.44% 169,698
Large ExodusPoint Capital Management, LP $283,250 0.44% 167,604
Large Caption Management, LLC $278,850 0.43% 165,000
Small Palo Alto Investors LP $263,148 0.41% 155,709
Mega WELLINGTON MANAGEMENT GROUP LLP $251,744 0.39% 148,962
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $234,959 0.36% 139,029
Mega Bank of New York Mellon Corp Bank $231,099 0.36% 136,746
Large MARSHALL WACE, LLP $219,180 0.34% 129,693
Mega CITADEL ADVISORS LLC $209,391 0.32% 123,900
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $185,731 0.29% 109,900
Mega JANE STREET GROUP, LLC $179,647 0.28% 106,300
Mid KENNEDY CAPITAL MANAGEMENT LLC $162,006 0.25% 95,862
Large Mariner, LLC $155,260 0.24% 91,870
Large CWM, LLC $154,842 0.24% 91,623
Small FOX RUN MANAGEMENT, L.L.C. $153,729 0.24% 90,964
Large Qube Research & Technologies Ltd $147,161 0.23% 87,078
Large Russell Investments Group, Ltd. $142,465 0.22% 84,300
Large Cerity Partners LLC $137,265 0.21% 81,223
Mid XTX Topco Ltd $127,030 0.20% 75,166
Mega PRICE T ROWE ASSOCIATES INC /MD/ $124,674 0.19% 73,772
Mega RHUMBLINE ADVISERS $116,956 0.18% 69,205
Large STRS OHIO $115,258 0.18% 68,200
Mega ALLIANCEBERNSTEIN L.P. $115,156 0.18% 68,140
Mega JANE STREET GROUP, LLC $111,202 0.17% 65,800
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $103,237 0.16% 61,087
Small FLOW TRADERS U.S. LLC $93,830 0.15% 55,521
Large CAPTRUST FINANCIAL ADVISORS $89,480 0.14% 52,947
Mid Graham Capital Management, L.P. $87,190 0.13% 51,592
Mega DEUTSCHE BANK AG\ Bank $84,957 0.13% 50,271
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $80,106 0.12% 47,400
Large MERCER GLOBAL ADVISORS INC /ADV $63,783 0.10% 37,742
Mid INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC $63,138 0.10% 37,360
Micro AlphaCentric Advisors LLC $62,732 0.10% 37,120
Small Essential Partners LLC $60,659 0.09% 35,893
Large FIRST MANHATTAN CO. LLC. $58,719 0.09% 34,745
Mega BNP PARIBAS ARBITRAGE, SA $50,387 0.08% 29,815
Large Creative Planning $48,791 0.08% 28,871
Mega CITADEL ADVISORS LLC $44,954 0.07% 26,600
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $43,627 0.07% 25,815
Small Providence Wealth Advisors, LLC $42,250 0.07% 25,000
Mega LPL Financial LLC $39,573 0.06% 23,416
Mega JPMORGAN CHASE & CO $39,135 0.06% 23,158
Large Focus Partners Wealth $37,345 0.06% 22,098
Mega Nuveen, LLC $35,939 0.06% 21,266
Small Hikari Power Ltd $33,833 0.05% 20,020
Mid Merit Financial Group, LLC $33,256 0.05% 19,679
Mid Chicago Partners Investment Group LLC $32,993 0.05% 19,523
Large Police & Firemen's Retirement System of New Jersey Pension $30,725 0.05% 18,181
Large Federation des caisses Desjardins du Quebec $30,599 0.05% 18,106
Mega Vanguard Global Advisers, LLC $29,891 0.05% 17,687
Mid LETKO, BROSSEAU & ASSOCIATES INC $29,237 0.05% 17,300
Mid Focus Partners Advisor Solutions, LLC $28,773 0.04% 17,026
Mega FMR LLC $27,889 0.04% 16,503
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $27,301 0.04% 16,155
Mid U.S. Capital Wealth Advisors, LLC $26,710 0.04% 15,805
Small Abel Hall, LLC $25,589 0.04% 15,142
Small Capital Advisors Wealth Management, LLC $25,350 0.04% 15,000
Mid Integrated Wealth Concepts LLC $25,279 0.04% 14,958
Mid INTECH INVESTMENT MANAGEMENT LLC $24,934 0.04% 14,754
Mid Krilogy Financial LLC $24,435 0.04% 14,459
Large CIBC Bancorp USA Inc. Bank $22,370 0.03% 13,237
Small King Wealth Management Group $20,111 0.03% 11,900
Small Caerus Investment Advisors, LLC $19,358 0.03% 11,455
Mid Tower Research Capital LLC (TRC) $19,139 0.03% 11,325
Small INSPIRION WEALTH ADVISORS, LLC $16,900 0.03% 10,000
Mega BARCLAYS PLC $16,741 0.03% 9,906

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