Arm
Arm traded $508.4M on 23 Oct 2026, 0.4× its 20-session average. Sector: AI & Compute Silicon.
504 trading days of history, to 2026-10-23 · all values converted to USD
Infinity volume insights
since 14 April 2025Every session our rules flagged for this company since 14 April 2025: 27. Those marked “In the feed” were published in the daily feed at the time; the rest are computed with the rules in use now. The feed shows a few a day across every market, so most never appear there. We began tracking this company on 28 September 2026; findings before then are marked “Before we tracked it”: it traded that way, and we were not yet watching.
- 2026-09-21Before we tracked it
Arm traded above 1.5× its average dollar volume for a third straight session
The three sessions: 1.7×, 2.0×, 4.1×. $4.2B against a 20-day average of $1.0B, on a rising price (+17.2%). The +17.2% move is 3.8 standard deviations from its usual daily change. Dollar volume 4.1× normal; turnover 1.2% of market cap (3.2× its usual turnover).
The latest is shown; the other 26 open with the full page.
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Volume by window
| Dollar volume | vs prior 20 sessions | |
|---|---|---|
| Last session | $508M | 0.4× |
| Week | For members · Sign in | |
| Month | ||
Sessions to 23 Oct.
Infinity sector: AI & Compute Silicon · A US listing of a UK companyBased on 249 companies, 79.2% of the S&P 500's trading.
Price and dollar volume
Bars coloured by directionThe last three months, one point a week (the week's last close and its total dollar volume).
How these are measured
- Turnover
- — dollar volume over market cap; how hard this name is traded relative to its size.
- Vs prior 20 sessions
- — above 1 means heavier trading than in the 20 sessions before it.
- Share of market volume
- — of the 250 names tracked in United States, not the whole market.
- Volatility
- — from daily returns over the held history. Indicative, not a risk model.
- Market cap
- — the latest session's close × shares outstanding, in USD. Each day in the history has its own, from that day's close; the share count is refreshed monthly.
This section is part of the full page.
This section is part of the full page.
Prices and volume via the daily pipeline, converted to USD.