Book Value
Book value is accounting equity — assets minus liabilities on the books, not what a willing buyer would pay tonight.
Definition
Book Value refers to assets minus liabilities on the books, not what a willing buyer would pay tonight. 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 assets minus liabilities on the books, not what a willing buyer would pay tonight 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 book value is saying. If assets minus liabilities on the books, not what a willing buyer would pay tonight 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 Book Value: what would falsify the current reading in the next window?