Volatility - 정의. Liability to change rapidly and unpredictably, especially for the worse >> In our context, how much price/value tends to change from one period to the next - Risk에 대해 이해하고 관리할 필요 있음 - 이 riskiness를 어떻게 양적화하고 비교할 수 있을지? Calculating annualized historical volatility - Vol_annualized = Vol_daily * root (252) # Calculating the standard deviation of daily returns + 252 = 365일 중 trading..