---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/42817181.md"
description: "$XL2CSOPHYNIX(07709.HK) the underlying stock is up 4 points, this one is also up 4 points, how to play"
datetime: "2026-07-21T01:59:10.000Z"
locales:
  - [en](https://longbridge.com/en/topics/42817181.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/42817181.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/42817181.md)
author: "[Della M](https://longbridge.com/en/profiles/12169918.md)"
---

# $XL2CSOPHYNIX(07709.HK) the underlying stock is up…


### Related Stocks

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

## Comments (4)

- **捡贝壳去咯 · 2026-07-21T02:07:52.000Z**: The underlying stock fell yesterday, but this one is still rising.
  - **Della M** (2026-07-21T02:09:18.000Z): That was last Friday, the premium here dropped by -23
  - **AliaHsw** (2026-07-21T02:09:35.000Z): That's because the market didn't open last Friday, so it fell this much
  - **Della M** (2026-07-21T02:09:57.000Z): So I don't understand what is being made up today 😧