---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/42149247.md"
description: "Didn't know UMC was a treasure, mistakenly thought US optical communication stocks were the treasure.Regret not buying more UMC"
datetime: "2026-06-24T14:36:34.000Z"
locales:
  - [en](https://longbridge.com/en/topics/42149247.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/42149247.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/42149247.md)
author: "[双双2026](https://longbridge.com/en/profiles/17201815.md)"
---

# Didn't know UMC was a treasure, mistakenly thought…


### Related Stocks

- [UMC.US](https://longbridge.com/en/quote/UMC.US.md)
- [MTK.NA](https://longbridge.com/en/quote/MTK.NA.md)
- [QCOM.US](https://longbridge.com/en/quote/QCOM.US.md)
- [TSM.US](https://longbridge.com/en/quote/TSM.US.md)

## Comments (3)

- **Leo Leo · 2026-06-24T19:37:24.000Z**: Optical communication stocks are performing very well today. Corning is up by more than ten points.
  - **双双2026** (2026-06-24T22:25:49.000Z): Only Corning is a bit better, but Corning is usually not that great either. Compared to Changfei Optical Fiber, it's far, far, far worse.
  - **新用户_QItMwo** (2026-06-24T22:35:08.000Z): Sold Yangtze Optical Fibre and Cable at over 30 yuan, it hurts, there's always some regret