Unit 4 · Level 3 · Portfolio hedging
Tail hedging: paying for lightning
Tail hedging holds a permanent stash of far-out-of-the-money puts: cheap lottery tickets against catastrophe. The design is brutal and honest: it LOSES money almost every month. Then a March 2020 arrives, the S&P drops a third in weeks, and those puts multiply. One famous tail-risk fund reported a quarterly return in the thousands of percent. The catch is everything in between.
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What you get asked
A tail hedge is…
It's crash insurance bought permanently and cheaply, far from the money: worthless in almost every month, priceless in the one that matters.
The honest arithmetic of tail hedging:
You are BUYING the lottery tickets that premium sellers live off. Years of small negatives, punctuated by one enormous positive, if you last that long.
Match the moment to the tail hedge's behavior
The strategy's returns arrive in lightning bolts. Everything else is paying for the sky.
Tail hedging fails in practice mostly because investors ___ after years of small losses, often right before it pays.
The bleed is easy on a spreadsheet and agony in real life. Abandoned insurance is the most expensive kind: you paid the premiums and missed the payout.
Who should actually bother with tail hedging?
A retiree living off a portfolio, a leveraged fund: people for whom −50% is fatal, not just painful. For most long-horizon savers, the Investing course's answer is cheaper: diversify, hold cash, and let time absorb the tails. 🐜
The rest of this unit
Puts, collars and tail hedges: what protection really costs, and when it's worth it.