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Implied Volatility vs Historical Volatility

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  • IV > HV = Overvalued
  • IV = HV = Fair Value
  • IV > HV = Undervalued


  1. 1. Pair with IV Rank: Use IV vs HV to confirm the setup, but IV Rank (50+, 70+) tells you how “high” IV is relative to its own history.
  2. 2. Timeframe: Use daily charts — IV is not meaningful on intraday timeframes.
  3. 3. Avoid noise: Use a smoothed HV (e.g., 20-day) and don’t chase small crossovers — look for clear divergence.
版本注释
The Essential 200 MAs to watch in your day trading: 200 simple moving average for:

5 minute
10 minute
15 minute
1 hour

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