---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/42338749.md"
description: "$Tuttle Capital Pure Play Photonics ETF(FOTO.US) rose slightly, $Tema Space Innovators ETF(NASA.US) gained four percentage points. These are both products with very small scale that follow the sentiment of niche themes. Their trading volume is inherently thin, making their volatility more easily amplified compared to the underlying stocks. This type of niche thematic ETF is less about pricing fundamentals and more like voting on a story 😸"
datetime: "2026-07-01T10:54:09.000Z"
locales:
  - [en](https://longbridge.com/en/topics/42338749.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/42338749.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/42338749.md)
author: "[见山是山](https://longbridge.com/en/profiles/27042472.md)"
---

# $Tuttle Capital Pure Play Photonics ETF(FOTO.US) r…


### Related Stocks

- [FOTO.US](https://longbridge.com/en/quote/FOTO.US.md)
- [603166.CN](https://longbridge.com/en/quote/603166.CN.md)
- [NASA.US](https://longbridge.com/en/quote/NASA.US.md)