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Notes from the desk.
Call Option Pricing Interview Questions: What to Know and How to Price an ATM Call in Your Head
A refresher on what a call option actually is, plus the mental shortcut trading floor interviewers expect you to know for pricing an at-the-money call on the spot.
VaR vs Expected Shortfall Interview Questions: Why Two Portfolios With the Same VaR Aren't Equally Risky
Two assets can share the same Value at Risk while having very different Expected Shortfall. Here's the interview question behind that statement, and why it's the reason VaR fell out of favor as the sole risk measure.