Shenzhen-listed RoboTechnik, which claims to be the largest silicon photonics tool maker and whose stock is up 340% over the past year, files for a HK listing (Zinnia Lee/Forbes)

<a href="https://www.forbes.com/sites/zinnialee/2026/05/15/chinese-ai-optics-billionaire-eyes-dual-listing-in-hong-kong-after-340-stock-rally/"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260516/i5.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260516/p5#a260516p5" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> Zinnia Lee / <a href="http://www.forbes.com/">Forbes</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://www.forbes.com/sites/zinnialee/2026/05/15/chinese-ai-optics-billionaire-eyes-dual-listing-in-hong-kong-after-340-stock-rally/">Shenzhen-listed RoboTechnik, which claims to be the largest silicon photonics tool maker and whose stock is up 340% over the past year, files for a HK listing</a></b></span>&nbsp; &mdash;&nbsp; RoboTechnik Intelligent Technology's Shenzhen-listed shares soared 340% over the past year, propelling founder Dai Jun's net worth to $2.4 billion.</p>