ALDX · Insider trading · 13F holders · Congress trades
Aldeyra Therapeutics Inc (ALDX)
Who is buying and selling ALDX: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 3
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
ALDX at a glance
- No open-market insider purchases or sales of ALDX were filed in the last 90 days.
- 3 13F filers hold ALDX among their 50 largest positions, worth $17.4M combined, including Mark Kingdon. The biggest bets by portfolio weight are Knoll Capital Management, LLC (5.4%), Mark Kingdon (0.8%) and Hikari Power Ltd (0.0%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in ALDX.
ALDX insider trading
No open-market insider purchases or sales of ALDX were filed in the last 90 days.
Who owns ALDX? Hedge funds and superinvestors
3 13F filers hold ALDX among their 50 largest positions, worth $17.4M combined, including Mark Kingdon. The biggest bets by portfolio weight are Knoll Capital Management, LLC (5.4%), Mark Kingdon (0.8%) and Hikari Power Ltd (0.0%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Superinvestors holding ALDX: Mark Kingdon 0.8%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Knoll Capital Management, LLCHedge fund | 5.4% | $11.7M | 5,475,516 | +0.0% shares | Q2 2026 |
| Mark KingdonHedge fund | 0.8% | $5.6M | 2,652,315 | +23.2% shares | Q2 2026 |
| Hikari Power LtdInvestment manager | 0.0% | $43K | 20,020 | — | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 3). Screen ALDX in the grand portfolio →
ALDX stock trades by members of Congress
No member of Congress has disclosed a trade in ALDX.
ALDX questions and answers
Are insiders buying ALDX stock?
No open-market insider purchases or sales of ALDX were filed in the last 90 days.
Which hedge funds own ALDX?
3 13F filers hold ALDX among their 50 largest positions, worth $17.4M combined, including Mark Kingdon. The biggest bets by portfolio weight are Knoll Capital Management, LLC (5.4%), Mark Kingdon (0.8%) and Hikari Power Ltd (0.0%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded ALDX?
No member of Congress has disclosed a trade in ALDX.
Who is the largest holder of ALDX?
Among 13F filers, Knoll Capital Management, LLC reports the largest ALDX position, $11.7M (5,475,516 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Knoll Capital Management, LLC's: 5.4% of its portfolio.
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