Single Stock Option Skew
Single Stock Option Skew — Name-specific put/call skew around events and borrow.
Definition
Single Stock Option Skew refers to name-specific put/call skew around events and borrow. Keep that definition fixed when comparing series, managers, or regimes — renaming the same tape does not create a new signal.
Why it matters
Equity risk premia compress or expand with earnings paths and factor regimes. When name-specific put/call skew around events and borrow shifts, related hedges, limits, and narratives usually need an explicit update rather than a quiet assumption.
Case
Suppose a desk is positioned for the opposite of what single stock option skew is saying. If name-specific put/call skew around events and borrow moves against that book, the first question is not “is the story clever?” but whether size, hedges, and stop logic still match the observation.
How to read it
Separate index beta from residual; know the sector and factor loadings of the claim. Prefer a short written null hypothesis for Single Stock Option Skew: what would falsify the current reading in the next window?