Asset class
Each ticker is set as an ETF or a stock when you add it. The type picks the rules used for it — not the list it is in. Single stocks move more than broad funds, so they get wider thresholds and a longer look-back.
What the type changes
| ETF | Stock | |
|---|---|---|
| Peak measured over | 90 trading days (about 4 months) | 252 trading days (about a year) |
| Highs / moderate dip / deep dip | under 2% / 5% / over 15% | under 5% / 15% / over 30% |
| 200-day trend | shown only | a broken trend reads Downtrend |
| Very deep drawdown | no limit | over 50% reads Downtrend |
| P/E | not shown | shown |
| Option strikes read (Nearest / Next / Horizon) | ±5% / ±10% / ±15% of the price | ±10% / ±15% / ±20% of the price |
Why only part of the option chain is read
The dashboard's walls, gamma and gamma flip are computed from option strikes within the range above. Market data is priced per contract, so reading every strike for every row is not affordable. The range widens for later expirations and for stocks, whose options are spread thinner. The X-Ray reads the whole expiration, so its numbers can differ slightly from the row.
Because the ranges differ, gamma sizes are not comparable between an ETF and a stock — only their signs are.