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The Vega Edge: How Elite Hedge Funds Trade Both Sides of Implied Volatility
Navnoor Bawa21 min read·Just now--
Five Strategies · Six Funds · Short Vega · Tail Hedging · Dispersion Trading · Credit Volatility · Term Structure Arbitrage · Volmageddon Forensics — Documented Returns, Every Source Linked
Implied volatility is the most persistently mispriced asset class in global markets — chronically overpriced on the sell side and explosively underpriced on the buy side during dislocations. The math is established, the trades are documented, the investor letters are public. Here is how the world’s sharpest funds have monetized both sides of that gap — every claim sourced directly.
The Equation That Moves Money: ∂C/∂σ = S√T·φ(d₁)
Every option has a vega — the sensitivity of its price to a one-point change in implied volatility:
ν = S√T · φ(d₁)
(The full general form is ν = e^{−qT} · S√T · φ(d₁), where q is the continuous dividend yield. The simplified form above assumes q = 0, which holds exactly for non-dividend-paying stocks and is the standard presentation in the derivatives literature.)
S = spot price, T = time to expiry (annualized), φ(d₁) = standard normal PDF at d₁. The practical consequence: a 12-month ATM call on a $100 stock with vega of $0.15 gains $0.30 if…
