not all averages are created equal
bridging middle school math to investing math
Our thinking on options, trading, investing.
bridging middle school math to investing math
vibe code a silver dashboard
how vega kills
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
Options, volatility, and risk — written by traders, delivered when we publish.