$ARWR
Arrowhead Research Corporation
XNAS•Health Care•Pharmaceutical Preparations
Why is ARWR down today? It is at $87.47 (-2.17%), and our scanner flagged it 68 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment ARWR spikes, and full due diligence on ARWR — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $87.47
- Change today
- -2.17%
- Previous close
- $89.41
- 52-week range
- $19.82 – $95.49
- Market cap
- $12.42B
- Institutional own.
- 96.32%
- Total held
- 98.1%
- Tradeable float
- 2.7M 2% of shares · after 2% insiders + 96% institutions
- Short interest
- 9.7M ▲ +0% vs prior · as of 2026-07-31
- Days to cover
- 3.9d
- Avg daily volume
- 2.4M
- Sector
- Health Care
- Industry
- Pharmaceutical Preparations
- Exchange
- XNAS
- 5m
- 0.8x
- 15m
- 0.5x
- 1h
- 0.5x
- 1D
- 0.1x
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Why is $ARWR down today?
ARWR is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on ARWR today, peaking at 2.5x its normal volume.
Analyst data via Nasdaq. Not investment advice.
Insiders
Insiders buying1 buys, 0 sells last 3 months (12/24 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Cohen Matthew Gregory Director | Acquired (grant/award) | +12K | n/a | 12K | n/a | Jun 15, 26 |
Lu Hongbo Director | Sold (automatic/other) | -3K | sold 5.4% | 52K | $228K at $76.88 | May 12, 26 |
Hamilton James C Officer | Sold (automatic/other) | -10K | sold 4.2% | 227K | $750K at $75.00 | Apr 23, 26 |
Apel Daniel Joseph Officer | Sold (automatic/other) | -13K | sold 7.4% | 163K | $918K at $70.11 | Apr 22, 26 |
Hamilton James C Officer | Sold (automatic/other) | -10K | sold 4.0% | 237K | $642K at $64.19 | Mar 5, 26 |
Apel Daniel Joseph Officer | Acquired (grant/award) | +75K 0.05% of company | added 74% | 176K | n/a | Jan 6, 26 |
O'Brien Patrick Officer | Sold (automatic/other) | -3K | sold 0.5% | 472K | n/a | Jan 6, 26 |
O'Brien Patrick Officer | Acquired (grant/award) | +75K 0.05% of company | added 16% | 547K | n/a | Jan 6, 26 |
Hamilton James C Officer | Acquired (grant/award) | +75K 0.05% of company | added 44% | 247K | n/a | Jan 6, 26 |
Hamilton James C Officer | Sold (automatic/other) | -40K 0.03% of company | sold 19% | 172K | $2.5M at $61.24 | Jan 5, 26 |
O'Brien Patrick Officer | Sold (automatic/other) | -49K 0.04% of company | sold 9.4% | 475K | $3.0M at $61.12 | Jan 5, 26 |
Anzalone Christopher Richard Officer | Sold (automatic/other) | -13K | sold 0.3% | 3.79M | $869K at $65.88 | Jan 2, 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
Recent offeringRecent priced share offering — a one-time sale that has already completed (not ongoing). If $ARWR runs, these filings show who may be positioned to sell new or newly-registered shares into the move.
- 3,100,776 new shares · About $188.3M in size · Priced at $64.5/share
Sourced from SEC EDGAR filings (last 9 months); terms read straight from the filing text where available. Ongoing = an at-the-market (ATM) program still selling over time or a live shelf, so it can keep diluting; Completed = a one-time priced sale that already finished. A shelf (S-3) stays effective ~3 years. Form type signals dilution capacity, not an exact share count, and we can't confirm how much of a shelf or ATM remains unused. Not investment advice.
$ARWR Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$ARWR Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.

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ARWR stock FAQ
Why is $ARWR down today?
ARWR is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on ARWR today, peaking at 2.5x its normal volume.
What is the ARWR stock price today?
ARWR last traded at $87.47, down 2.17% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live ARWR alerts?
The ARWR 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 ARWR 68 times in the last 30 days.
What exchange is ARWR on?
ARWR (Arrowhead Research Corporation) trades on XNAS, with a market cap of about $12.42B in the PHARMACEUTICAL PREPARATIONS sector.
Is ARWR 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 ARWR for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.