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Level 9 · ◆◆◆ · ~12 min

Volatility That Moves: EWMA & GARCH

Yesterday's σ is stale by lunchtime.

"Volatility clusters — and VaR is only as fresh as its volatility forecast."

volatility clusteringmoving windowsEWMAGARCHmean reversion
🚀 You're jumping ahead. This builds on Portfolio VaR: Correlation Is Everything — but play it now and you'll still earn full XP. If it feels steep, those make a gentler on-ramp.

A short lesson, then a quiz. ❤️×3 — a wrong answer costs a heart; finish with at least one left and the level is yours. Lose all three and you'll have to try again. Replay any time — XP and cleared levels are never lost.