Risk and Edge
Percents Are Tricky
Possible pitfalls of thinking in percents with ratios
Risk and Edge
Possible pitfalls of thinking in percents with ratios
Options and Volatility
The arithmetic behind how increased volatility reduces average compounded returns
How Markets Work
What high prices beg for
Risk and Edge
Compute the amount of dollars required to rebalance a levered exposure
How Markets Work
The brutal arithmetic behind shorting
How Markets Work
Leases are options with an embedded cost of carry