---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/42417267.md"
description: "$XL2CSOPHYNIX(07709.HK) The underlying stock fell 14 points yesterday and rose 11 points today. The 2x long ETF fell 26 points yesterday and rose 7 points today. Can you guys figure this out?"
datetime: "2026-07-03T08:09:29.000Z"
locales:
  - [en](https://longbridge.com/en/topics/42417267.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/42417267.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/42417267.md)
author: "[不入凡尘](https://longbridge.com/en/profiles/21028948.md)"
---

# $XL2CSOPHYNIX(07709.HK) The underlying stock fell …


### Related Stocks

- [07709.HK](https://longbridge.com/en/quote/07709.HK.md)

## Comments (1)

- **不入凡尘 · 2026-07-03T08:12:58.000Z**: If we follow the logic of doubling, wouldn't that mean it fell 28 points yesterday, so it should rise 22 points today?