$HALO
Halozyme Therapeutics, Inc.
XNAS•Health Care•Biological Products, (No Diagnostic Substances)
Why is HALO down today? It is at $105.80 (-1.69%), and our scanner flagged it 69 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment HALO spikes, and full due diligence on HALO — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $105.80
- Change today
- -1.69%
- Previous close
- $107.62
- 52-week range
- $61.23 – $107.96
- Market cap
- $12.04B
- Institutional own.
- 99.9%
- Total held
- 100.0%
- Short interest
- 14.0M ▲ +5% vs prior · as of 2026-07-31
- Days to cover
- 8.3d
- Avg daily volume
- 2.0M
- Sector
- Health Care
- Industry
- Biological Products, (No Diagnostic Substances)
- Exchange
- XNAS
- 5m
- 0.2x
- 15m
- 0.2x
- 1h
- 0.3x
- 1D
- 0.2x
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Why is $HALO down today?
Here is the latest on HALO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for HALO today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Analyst data via Nasdaq. Not investment advice.
Insiders
Insiders selling0 buys, 10 sells last 3 months (7/55 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Connaughton Bernadette Director | Sold (automatic/other) | -2K | sold 3.9% | 40K | $167K at $102.80 | Aug 10, 26 |
Torley Helen Officer | Sold (automatic/other) | -2K | sold 0.2% | 768K | $152K at $79.28 | Jul 8, 26 |
Torley Helen Officer | Other | 2K | added 0.3% | 770K | $23K at $12.07 | Jul 8, 26 |
Connaughton Bernadette Director | Sold (automatic/other) | -2K | sold 3.7% | 42K | $124K at $76.39 | Jul 1, 26 |
Ramsay David A Officer | Sold (automatic/other) | -5K | sold 54% | 5K | $423K at $78.27 | Jun 30, 26 |
Ramsay David A Officer | Other | 10K | n/a | 10K | n/a | Jun 30, 26 |
Krishnan Mahesh Director | Sold (automatic/other) | -7K | sold 34% | 14K | $548K at $75.00 | Jun 29, 26 |
Krishnan Mahesh Director | Other | 7K | added 51% | 22K | $281K at $38.46 | Jun 29, 26 |
Snyder Mark Howard Officer | Sold (automatic/other) | -3K | sold 5.2% | 50K | $189K at $69.50 | Jun 12, 26 |
Snyder Mark Howard Officer | Other | 5K | added 11% | 53K | n/a | Jun 12, 26 |
Torley Helen Officer | Sold (automatic/other) | -10K | sold 1.3% | 768K | $664K at $66.37 | Jun 3, 26 |
Torley Helen Officer | Other | 10K | added 1.3% | 778K | $121K at $12.07 | Jun 3, 26 |
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.
Dilution watch
UnavailableWe could not reach SEC EDGAR, so the dilution check did not run for $HALO. This is not a clean result: there may be an offering, a registration or a shelf on file that we were unable to read. Check it yourself on SEC EDGAR before trading it.
$HALO Sentiment
BearishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$HALO Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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HALO stock FAQ
Why is $HALO down today?
Here is the latest on HALO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for HALO 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 HALO stock price today?
HALO last traded at $105.80, down 1.69% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live HALO alerts?
The HALO 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 HALO 69 times in the last 30 days.
What exchange is HALO on?
HALO (Halozyme Therapeutics, Inc.) trades on XNAS, with a market cap of about $12.04B in the BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES) sector.
Is HALO 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 HALO for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.