$IONS
Ionis Pharmaceuticals, Inc. Common Stock
XNAS•Health Care•Pharmaceutical Preparations
Why is IONS down today? It is at $58.76 (-3.36%), and our scanner flagged it 69 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment IONS spikes, and full due diligence on IONS — key stats, earnings, dilution and insider activity. Free.
Get free $IONS alerts the moment volume spikes
Our scanner flagged $IONS 69 times in the last 30 days. Create a free account to track $IONS, build a watchlist, and get instant unusual-volume alerts, with a full day of premium now and 5 more when you verify your email, no card needed.
No card · 5 premium days · join 800+ traders
Key Stats
- Price
- $58.76
- Change today
- -3.36%
- Previous close
- $60.80
- 52-week range
- $41.70 – $86.74
- Market cap
- $9.91B
- Shares outstanding
- 166.2M SEC · as of 2026-07-23 · 28d
- Institutional own.
- 99.9%
- Total held
- 100.0%
- Short interest
- 21.5M ▲ +7% vs prior · as of 2026-07-31
- Days to cover
- 6.3d
- Avg daily volume
- 2.5M
- Sector
- Health Care
- Industry
- Pharmaceutical Preparations
- Exchange
- XNAS
- 5m
- 1.7x
- 15m
- 1.7x
- 1h
- 1.3x
- 1D
- 0.2x
Get free IONS + market alerts in your inbox
The top plays and unusual-volume catches our scanner flags, emailed to you. No account needed.
No spam. Unsubscribe anytime. Not investment advice.
Why is $IONS down today?
Here is the latest on IONS from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for IONS 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
2 open-market buys3 buys, 15 sells last 3 months (21/125 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Hayden Michael R Director | Bought (open market) | +5K | added 26% | 24K | $258K at $51.60 | Jul 31, 26 |
Hayden Michael R Director | Bought (open market) | +15K | added 100% | 19K | $801K at $53.38 | Jul 30, 26 |
Berthelsen Spencer R Director | Other | 5K | added 3.3% | 161K | n/a | Jul 15, 26 |
Herman Joan E Director | Other | 5K | added 11% | 51K | n/a | Jul 15, 26 |
Kordasiewicz Holly B. Officer | Sold (automatic/other) | -362 | sold 1.6% | 22K | $31K at $84.30 | Jul 7, 26 |
Diaz Allene M. Director | Sold (automatic/other) | -10K | sold 73% | 4K | $864K at $85.42 | Jul 7, 26 |
Diaz Allene M. Director | Other | 10K | added 100% | 14K | $476K at $47.11 | Jul 7, 26 |
Bennett C Frank Officer | Sold (automatic/other) | -6K | sold 6.9% | 75K | $463K at $83.58 | Jul 7, 26 |
Bennett C Frank Officer | Acquired (grant/award) | +15K | n/a | 15K | n/a | Jul 7, 26 |
Bennett C Frank Officer | Sold (automatic/other) | -15K | n/a | n/a | $1.3M at $85.46 | Jul 7, 26 |
Klein Joseph Iii Director | Sold (automatic/other) | -12K | sold 51% | 11K | $910K at $79.04 | Jul 1, 26 |
Klein Joseph Iii Director | Other | 12K | added 100% | 23K | $460K at $39.94 | Jul 1, 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 $IONS. 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.
$IONS Sentiment
BearishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$IONS Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
Stocks similar to IONS
Comparable names in pharmaceutical preparations, closest in size first.
IONS stock FAQ
Why is $IONS down today?
Here is the latest on IONS from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for IONS 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 IONS stock price today?
IONS last traded at $58.76, down 3.36% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live IONS alerts?
The IONS 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 IONS 69 times in the last 30 days.
What exchange is IONS on?
IONS (Ionis Pharmaceuticals, Inc. Common Stock) trades on XNAS, with a market cap of about $9.91B in the PHARMACEUTICAL PREPARATIONS sector.
Is IONS 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 IONS for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.