Materials · band window Nov 13 – Nov 20
Materials Select Sector SPDR
ETF · US · Sector ETF
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 XLB's 112 settled weeks, 79 (70.5%) finished inside ±1σ on the week's last close. 18 (16.1%) finished at or above +1σ and 15 (13.4%) at or below −1σ. A normal distribution puts 68.3% inside and about 15.9% beyond each side. Given 112 weeks, the gap from theory is within what chance alone produces.
This week's band of ±2.4% is 0.97× the symbol's median width of ±2.5% and ranks #177 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 −3.09σ. The most recent finish outside was 2026-10-16 (+1.23σ), 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: 238/252 sessions · missing bands show price only
Anchor-date IV unverified for 14 sessions · bands and sigma hidden
| Close date | Sigma | +1W | +2W | +4W |
|---|---|---|---|---|
| +0.14σ | — | — | — | |
| −0.55σ | +0.50% | — | — | |
| +0.87σ | −1.50% | −1.00% | — | |
| +0.29σ | +2.79% | +1.25% | — | |
| +1.23σ | +0.77% | +3.57% | +2.53% | |
| +0.42σ | +3.01% | +3.80% | +5.10% | |
| −0.98σ | +1.17% | +4.22% | +7.94% | |
| −0.66σ | −2.84% | −4.67% | −6.83% | |
| −0.27σ | −1.39% | −4.19% | −6.36% | |
| +0.92σ | −0.67% | −2.05% | −6.63% | |
| −0.24σ | +1.90% | +1.22% | −3.03% | |
| +1.79σ | −0.61% | +1.29% | −0.79% |
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.