用python写一个期权复制和期权对冲策略
时间: 2024-03-11 13:43:26 浏览: 110
B-S_auto_期权定价_期权_
期权复制和期权对冲是金融领域中常见的两种策略,其中期权复制是指通过购买或出售其他资产来模拟期权的价格变化,而期权对冲则是指通过持有相反的头寸来抵消期权的价格变化。下面是一个使用Python编写的期权复制和期权对冲策略示例:
```python
import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
# 生成随机股票价格序列
np.random.seed(0)
stock_prices = pd.Series(np.random.normal(0, 1, 1000)).cumsum()
# 定义期权复制和期权对冲函数
def option_replication(stock_prices, strike_price, call_put):
if call_put == 'call':
option_payoff = np.maximum(stock_prices - strike_price, 0)
else:
option_payoff = np.maximum(strike_price - stock_prices, 0)
delta = pd.Series(np.diff(option_payoff) / np.diff(stock_prices), index=stock_prices[:-1])
return delta
def option_hedging(stock_prices, strike_price, call_put):
delta = option_replication(stock_prices, strike_price, call_put)
if call_put == 'call':
hedging_payoff = stock_prices - delta * stock_prices + delta * strike_price
else:
hedging_payoff = delta * stock_prices - delta * strike_price + strike_price
return hedging_payoff
# 绘制期权复制和期权对冲的收益曲线
strike_price = 100
call_option = option_hedging(stock_prices, strike_price, 'call')
put_option = option_hedging(stock_prices, strike_price, 'put')
plt.plot(stock_prices, call_option, label='Call option')
plt.plot(stock_prices, put_option, label='Put option')
plt.legend()
plt.show()
```
在这个例子中,我们首先生成了一个随机股票价格序列,然后定义了两个函数,`option_replication`用于计算期权复制的delta值,`option_hedging`用于计算期权对冲的收益曲线。最后,我们通过调用`option_hedging`函数来绘制期权复制和期权对冲的收益曲线。
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