Semiconductors · band window Nov 13 – Nov 20
ARM HOLDINGS PLC
Equity · US · Semiconductors
Inside the expected range. No statistical dislocation.
Price basis: 2026-11-13 US regular-session close · candle and GEX OI timestamps are shown separately on the chart.
This link opens the latest data for this symbol.
30-minute candles · US regular session (ET)
2024-09-06 – 2026-11-13 · measured on each week's last regular-session close
Of ARM's 113 settled weeks, 71 (62.8%) finished inside ±1σ on the week's last close. 23 (20.4%) finished at or above +1σ and 19 (16.8%) at or below −1σ. A normal distribution puts 68.3% inside and about 15.9% beyond each side. Given 113 weeks, the gap from theory is within what chance alone produces.
This week's band of ±11.9% is 1.54× the symbol's median width of ±7.7% and ranks #35 widest of 184 tracked symbols. The options market is pricing a larger move than usual; check whether an earnings release or similar event falls inside the week.
The week that finished furthest from its anchor closed 2026-04-24 at +4.99σ. The most recent finish outside was 2026-10-16 (−1.81σ), followed by 4 straight weeks inside.
Past shares do not predict next week. A week that broke the band intraday but closed back inside counts as inside. The universe-wide measurement and its method are in the weekly ±1σ coverage study.
Each date uses its own weekly band · settled bands are retained
Click or tap the chart to see prices.
Price ($)
Shading: historic ±1σ · dots: close at or beyond the band
Prices shown 2025-11-13–2026-11-13 · 252 sessions
Sigma bands: 242/252 sessions · missing bands show price only
Anchor-date IV unverified for 10 sessions · bands and sigma hidden
| Close date | Sigma | +1W | +2W | +4W |
|---|---|---|---|---|
| +0.73σ | — | — | — | |
| −0.99σ | +9.05% | — | — | |
| −0.20σ | −15.22% | −7.55% | — | |
| −0.80σ | −2.07% | −16.98% | — | |
| −1.81σ | −7.67% | −9.58% | −16.41% | |
| −1.55σ | −14.45% | −21.01% | −34.42% | |
| −0.10σ | −13.40% | −25.92% | −33.02% | |
| +0.61σ | +4.09% | +17.19% | +0.56% | |
| +0.69σ | +5.04% | +9.33% | +21.98% | |
| −0.19σ | +5.45% | +10.77% | +29.81% | |
| −1.39σ | −1.75% | +3.60% | +13.27% | |
| −0.10σ | −12.93% | −14.45% | −5.24% |
Close-to-close price changes, excluding dividends and costs. — means future or unavailable. Predictive value is still under validation.
Dealer gamma stacked at each strike. The dashed lines are this week's ±1σ edges, so whether a thick strike and a band edge land on the same price is readable in one view.
Hedging runs with the move, so levels break faster than they hold.
+1σ $213.02 · −1σ $167.82 — outside the published strike window ($172.50–$207.50), so not drawn on the ladder above.
All expirations, strikes within ±10% of spot. Open interest settles once a day, so these levels move on the same cadence as the σ band.
A daily snapshot, not a live quote. Prices are taken as the upstream feed supplies them.