The Midpoint From 1 to 9 is…3?
numeracy practice
numeracy practice
Volatility is a quadratic drag on returns
Financial Hacking is one of the best books applying intuition to common problems in trading and investing
The basics of log returns
Using SP500 returns to distinguish geometric (compounded) returns from average arithmetic returns
Understand the meaning of "average" when returns compounds
Translating rates of return over different time periods
Thoughts on how we perceive risk and liquidity
Being a strong bettor requires well-tuned meta-knowledge
How probability relates to correlation
The lone genius trader is a myth
Even people that should no better bet sums that are wildly suboptimal
Harmonic means for ratios
Practicing confidence intervals
Applying the concept of option gamma to understand how levered ETF deltas trigger daily delta rebalances
Options, volatility, and risk — written by traders, delivered when we publish.