Software · band window Nov 13 – Nov 20
IBM
Equity · US · Software
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 IBM's 114 settled weeks, 72 (63.2%) finished inside ±1σ on the week's last close. 21 (18.4%) finished at or above +1σ and 21 (18.4%) at or below −1σ. A normal distribution puts 68.3% inside and about 15.9% beyond each side. Given 114 weeks, the gap from theory is within what chance alone produces.
This week's band of ±4.3% is 1.09× the symbol's median width of ±3.9% and ranks #122 widest of 184 tracked symbols. That is close to its usual width.
The week that finished furthest from its anchor closed 2026-07-17 at −4.98σ. The most recent finish outside was 2026-11-06 (−1.05σ), 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: 248/252 sessions · missing bands show price only
Anchor-date IV unverified for 4 sessions · bands and sigma hidden
| Close date | Sigma | +1W | +2W | +4W |
|---|---|---|---|---|
| +0.17σ | — | — | — | |
| −1.05σ | +0.86% | — | — | |
| +0.34σ | −4.97% | −4.15% | — | |
| +0.97σ | +1.68% | −3.38% | — | |
| +0.54σ | +9.23% | +11.06% | +6.45% | |
| +0.49σ | +2.21% | +11.64% | +7.87% | |
| −0.29σ | +2.02% | +4.27% | +15.80% | |
| −0.42σ | −1.27% | +0.72% | +12.44% | |
| −1.20σ | −1.76% | −3.01% | +1.13% | |
| −0.07σ | +3.58% | −2.27% | −5.22% | |
| −0.01σ | −0.30% | +3.27% | −4.28% | |
| +0.14σ | −0.04% | −0.34% | −2.60% |
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 leans against the move, so the strikes below tend to hold.
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.