量化指标公式源码
时间: 2023-07-23 15:12:55 浏览: 145
不清楚您想要哪方面的量化指标公式源码,以下是一些常见的量化指标及其Python实现:
1. 夏普比率(Sharpe Ratio)
```
import numpy as np
def sharpe_ratio(returns, risk_free_rate=0):
excess_returns = returns - risk_free_rate
return np.mean(excess_returns) / np.std(excess_returns)
```
2. 最大回撤(Maximum Drawdown)
```
def maximum_drawdown(returns):
cum_returns = (1 + returns).cumprod()
peak = cum_returns.expanding(min_periods=1).max()
drawdown = (cum_returns / peak) - 1
return drawdown.min()
```
3. 年化收益率(Annualized Returns)
```
def annualized_returns(returns, periods_per_year):
total_return = np.prod(1 + returns)
years = len(returns) / periods_per_year
return (total_return ** (1 / years)) - 1
```
4. 胜率(Winning Rate)
```
def winning_rate(returns):
positive_returns = returns[returns > 0]
return len(positive_returns) / len(returns)
```
这些公式的实现仅供参考,实际使用时需要根据具体需求进行修改。