import FinanceDataReader as fdr
import numpy as np
df = fdr.DataReader('AAPL', '2000')
df
start = '2021-06-13'
end = '2022-02-03'
tmp_df = df.loc[start:end]
tmp_df

 

 

tmp_df['Change'] = tmp_df['Close'].pct_change()
tmp_df

 

VOL = np.std(tmp_df['Change']) * np.sqrt(252.)
VOL

결과출력:

np.float64(0.23523418290202477)

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