$ALDX
Aldeyra Therapeutics, Inc.
XNAS•Health Care•Pharmaceutical Preparations
Why is ALDX up today? It is at $1.52 (+1.33%), and our scanner flagged it 12 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment ALDX spikes, and full due diligence on ALDX — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $1.52
- Change today
- +1.33%
- Previous close
- $1.50
- 52-week range
- $1.07 – $6.17
- Market cap
- $92M
- Institutional own.
- 67.25%
- Total held
- 79.0%
- Tradeable float
- 12.7M 21% of shares · after 12% insiders + 67% institutions
- Short interest
- 3.4M ▼ -5% vs prior · as of 2026-07-31
- Short % of float
- 27.1%
- Days to cover
- 3.1d
- Avg daily volume
- 1.6M
- Sector
- Health Care
- Industry
- Pharmaceutical Preparations
- Exchange
- XNAS
- 5m
- 5.3x
- 15m
- 4.1x
- 1h
- 3.2x
- 1D
- --
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Why is $ALDX up today?
Here is the latest on ALDX from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for ALDX today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Likely catalystAldeyra Therapeutics, Inc.: Q2 FY2026 results, three months to Jun 30, 2026, from an SEC filing. Read it →Latest filingSC 13GPassive 5%+ stake disclosedAug 12, 2026 · 11 days agoAnalyst data via Nasdaq. Not investment advice.
Insiders
Insiders buying4 open-market buys1 buys, 0 sells last 3 months (3/0 over 12 months)Show 6 recent transactionsMinimize 6 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Brady Todd C Officer | Bought (open market) | +250K 0.4% of company | added 17% | 1.72M | $418K at $1.67 | Jun 3, 26 |
Douglas Richard Director | Bought (open market) | +70K 0.1% of company | added 56% | 195K | $98K at $1.40 | Mar 19, 26 |
Alfieri Michael Officer | Bought (open market) | +5K | added 100% | 8K | $7K at $1.42 | Mar 18, 26 |
Alfieri Michael Officer | Bought (open market) | +3K | n/a | 3K | $13K at $5.30 | Aug 13, 25 |
Machatha Stephen Officer | Sold (automatic/other) | -22K 0.04% of company | sold 9.1% | 222K | $114K at $5.15 | Aug 11, 25 |
Perceptive Advisors Llc Beneficial Owner (10%) | Sold (automatic/other) | -3.40M 5.6% of company | sold 37% | 5.88M | $4.8M at $1.42 | Apr 3, 25 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$ALDX Sentiment
BearishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$ALDX Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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ALDX stock FAQ
Why is $ALDX up today?
Here is the latest on ALDX from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for ALDX today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
What is the ALDX stock price today?
ALDX last traded at $1.52, up 1.33% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live ALDX alerts?
The ALDX Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged ALDX 12 times in the last 30 days.
What exchange is ALDX on?
ALDX (Aldeyra Therapeutics, Inc.) trades on XNAS, with a market cap of about $92M in the PHARMACEUTICAL PREPARATIONS sector.
Is ALDX good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge ALDX for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.