Semiconductors · band window Nov 13 – Nov 20
Sandisk Corporation
Equity · US · Semiconductors · Memory
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)
2025-03-14 – 2026-11-13 · measured on each week's last regular-session close
Of SNDK's 88 settled weeks, 54 (61.4%) finished inside ±1σ on the week's last close. 22 (25.0%) finished at or above +1σ and 12 (13.6%) at or below −1σ. A normal distribution puts 68.3% inside and about 15.9% beyond each side. Given 88 weeks, the gap from theory is within what chance alone produces. Breaks skewed upward: more weeks finished above +1σ than below −1σ.
This week's band of ±14.1% is 1.11× the symbol's median width of ±12.6% and ranks #17 widest of 184 tracked symbols. That is close to its usual width.
The week that finished furthest from its anchor closed 2025-04-04 at −5.36σ. The most recent finish outside was 2026-11-06 (−2.34σ), followed by 1 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: 252/252 sessions
| Close date | Sigma | +1W | +2W | +4W |
|---|---|---|---|---|
| +0.37σ | — | — | — | |
| −2.34σ | +5.92% | — | — | |
| −0.52σ | −27.44% | −23.15% | — | |
| −0.48σ | −7.04% | −32.55% | — | |
| −2.43σ | −4.72% | −11.42% | −31.92% | |
| −1.07σ | −17.86% | −21.73% | −47.21% | |
| −0.34σ | −8.03% | −24.46% | −33.09% | |
| −0.09σ | −3.25% | −11.02% | −30.36% | |
| +1.18σ | −0.78% | −4.01% | −27.49% | |
| −0.62σ | +9.70% | +8.84% | −3.15% | |
| +1.90σ | −6.13% | +2.98% | −1.15% | |
| −0.68σ | +17.17% | +9.99% | +19.72% |
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 $1,008.86 · −1σ $760.14 — outside the published strike window ($825.00–$940.00), 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.