trading as a sudoku puzzle
sense-making from market prices
sense-making from market prices
market making exercise
mental math on gamma
gamma and calendar spreads
Contradictions
an opinionated way to marry options to investing
The odds surface across marketplaces
modeling vol surfaces
skew delta
taxes and options
average price options
computing rebalance quantities
A few common misunderstandings
shadow theta when an event is approaching
earnings extraction example
Options, volatility, and risk — written by traders, delivered when we publish.