Chain Skew Threshold
What it does
The minimum put/call mark ratio (or its inverse for calls) for the chain-skew inference to label the underlying as directionally biased. At the 30-delta strikes, if one side is priced materially richer the market is pricing in a move. Below this ratio the inferred bias stays neutral. Must be less than the strong chain skew threshold.
When to change it
Lower it to have the picker label a directional lean more readily. Raise it to require a more pronounced skew before any directional lean is logged. This setting only labels direction: see require-strong-bias-for-directional for what is required to actually unlock a directional structure.
Safe range
1.2 (labels mild skew) to 1.8 (requires a more pronounced skew). Must stay below the strong threshold.
Example
Set to 1.5 → if the 30-delta put mark is 1.5x the call mark, bias is labeled bearish. At 1.3x the ratio does not clear the bar and bias stays neutral.