最新数据的因子值貌似不太对

<img width="1149" height="474" alt="Image" src="https://github.com/user-attachments/assets/7ebea5c5-3892-4319-b488-8b8e41f0b185" />

因子公式

```python
-POWER(RANK(((SUM(open, 5) * sum(RETURNS(close, 1), 5)) - DELAY((SUM(open, 5) * SUM(RETURNS(close, 1), 5)),10))), 2)
``` 
应该都是负数，实际值有正数，不太复合预期