Defensive · band window Sep 25 – Oct 2
COSTCO WHOLESALE
Equity · US · Defensive
Inside the expected range. No statistical dislocation.
Price basis: 2026-09-25 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)
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 2025-09-25–2026-09-25 · 252 sessions
Sigma bands: 252/252 sessions
| Close date | Sigma | +1W | +2W | +4W |
|---|---|---|---|---|
| +0.69σ | — | — | — | |
| −0.45σ | +3.07% | — | — | |
| −0.51σ | −1.05% | +1.99% | — | |
| −1.29σ | −1.20% | −2.23% | — | |
| −0.09σ | −3.14% | −4.30% | −2.40% | |
| −0.56σ | −0.24% | −3.38% | −5.53% | |
| +0.53σ | −1.39% | −1.63% | −5.86% | |
| −0.13σ | +1.40% | −0.01% | −3.38% | |
| +0.67σ | −0.43% | +0.97% | −0.67% | |
| −0.20σ | +1.80% | +1.37% | +1.36% | |
| +0.96σ | −0.62% | +1.17% | +2.15% | |
| −1.15σ | +2.69% | +2.05% | +3.45% |
Close-to-close price changes, excluding dividends and costs. — means future or unavailable. Predictive value is unverified.
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.
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.