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均值方差模型 代码如下: import pandas as pd import numpy as np import scipy.optimize as sco import matplotlib.pyplot as plt ====================== 1. 内嵌模拟A股数据 ======================np.random.seed(42) # 固定随机种子,结果可复现 标的信息(A股)tickers = [‘600519.SH’, ‘300750.SZ’, ‘600036.SH’,...
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