$ARM
Arm Holdings plc American Depositary Shares
XNAS•Technology•Unknown
Why is ARM up today? It is at $250.72 (+0.55%), and our scanner flagged it 290 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment ARM spikes, and full due diligence on ARM — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $250.72
- Change today
- +0.55%
- Previous close
- $249.34
- 52-week range
- $100.02 – $452.70
- Market cap
- $270.57B
- Institutional own.
- 9.26%
- Total held
- 9.3%
- Tradeable float
- 968.4M 91% of shares · after <1% insiders + 9% institutions
- Short interest
- 16.9M ▼ -3% vs prior · as of 2026-07-31
- Short % of float
- 1.7%
- Days to cover
- 2.6d
- Avg daily volume
- 6.9M
- Sector
- Technology
- Industry
- Unknown
- Exchange
- XNAS
- 5m
- 0.1x
- 15m
- 0.5x
- 1h
- 0.4x
- 1D
- 0.1x
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Why is $ARM up today?
ARM is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 6 unusual-volume and momentum alerts on ARM today, peaking at 8.3x its normal volume. A recent catalyst in the news: “This Billionaire Tech Investor Is Betting Big on SpaceX and Chip Stocks.”
Likely catalystForeign issuer report (6-K), from an SEC filing. Read it →Latest filing4Insider trade (Form 4)Aug 18, 2026 · yesterdayAnalyst data via Nasdaq. Not investment advice.
From the trading subreddits (WallStreetBets, r/stocks and more). Retail chatter, not a signal. Do your own research.
Insiders
Insiders selling0 buys, 6 sells last 3 months (6/32 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Bartels Laura Kathleen Officer | Sold (automatic/other) | -856 | sold 6.2% | 13K | $232K at $271.43 | Aug 17, 26 |
Bartels Laura Kathleen Officer | Other | 2K | added 14% | 14K | n/a | Aug 17, 26 |
Sine Jeffrey Director | Sold (automatic/other) | -10K | n/a | n/a | n/a | Aug 7, 26 |
Bartels Laura Kathleen Officer | Sold (automatic/other) | -11K | sold 48% | 12K | $4.4M at $392.70 | Jun 2, 26 |
Abbey William Officer | Sold (automatic/other) | -7K | sold 24% | 21K | $2.5M at $383.73 | Jun 1, 26 |
Abbey William Officer | Sold (automatic/other) | -4K | sold 13% | 27K | $1.4M at $343.81 | May 28, 26 |
Abbey William Officer | Sold (automatic/other) | -2K | sold 6.8% | 31K | $703K at $305.82 | May 22, 26 |
Eaton Charlotte Claire Officer | Sold (automatic/other) | -4K | sold 34% | 8K | $1.1M at $282.77 | May 21, 26 |
Eaton Charlotte Claire Officer | Sold (automatic/other) | -8K | n/a | n/a | $2.2M at $288.10 | May 21, 26 |
Abbey William Officer | Sold (automatic/other) | -5K | sold 12% | 34K | $1.3M at $287.03 | May 21, 26 |
Eaton Charlotte Claire Officer | Sold (automatic/other) | -3K | sold 21% | 12K | $782K at $252.25 | May 20, 26 |
Child Jason Officer | Sold (automatic/other) | -32K | sold 15% | 174K | $7.2M at $226.54 | May 20, 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.
$ARM Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$ARM Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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ARM stock FAQ
Why is $ARM up today?
ARM is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 6 unusual-volume and momentum alerts on ARM today, peaking at 8.3x its normal volume. A recent catalyst in the news: “This Billionaire Tech Investor Is Betting Big on SpaceX and Chip Stocks.”
What is the ARM stock price today?
ARM last traded at $250.72, up 0.55% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live ARM alerts?
The ARM 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 ARM 290 times in the last 30 days.
What exchange is ARM on?
ARM (Arm Holdings plc American Depositary Shares) trades on XNAS, with a market cap of about $270.57B in the UNKNOWN sector.
Is ARM 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 ARM for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.