§ BIOTECHNOLOGY
USD · BiotechnologyALDX
ALDEYRA THERAPEUTICS INC
USDSector · Biotechnology
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
§ 05 · WHO OWNS IT
Top institutional holders
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| Knoll Capital Management, LLC | 5.5M | 5.1% | ±0% |
| AQR Capital Management | 2.8M | 0.0% | +131% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | 0.0% | n/a |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | 0.0% | n/a |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | 2.2M | 0.4% | +16% |
| BlackRock, Inc. | 2.1M | 0.0% | −2% |
◇ AC INTELLIGENCE
Top institutional owners for ALDX as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.
§ 06 · WHO OWNS IT · BY STRATEGY
OTHER31.9% · 0 holders
OTHER44.7% · 83 holders
PASSIVE / INDEX9.0% · 7 holders
DEALER / BANK6.3% · 16 holders
TACTICAL / MACRO2.3% · 2 holders
ACTIVIST2.3% · 1 holder
SYSTEMATIC / QUANT1.9% · 5 holders
QUALITY / COMPOUNDER1.4% · 7 holders
INCOME / DEFENSIVE0.1% · 4 holders
DEEP VALUE0.1% · 1 holder
◇ AC INTELLIGENCE
Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.
§ 07 · INSIDER ACTIVITY · LAST 180 DAYS
NO INSIDER FILINGS
◇ AC INTELLIGENCE
No Form 4 filings on record for ALDX in the last 180 days.
§ 08 · COVERAGE · OUR RECENT NOTES
No notes mention ALDX yet.