Eoptolink Technology, a Chinese maker of the optical parts that shuttle data between AI chips, has filed for a Hong Kong listing that could raise as much as $5bn, according to Bloomberg.

The paperwork arrives roughly three months after the company picked banks for a deal then pegged at about $3bn, a target that has swelled alongside the market’s appetite for anything bolted to AI infrastructure.

The timing is not subtle. Hong Kong’s exchange has spent 2026 gathering up mainland hardware names, from Apple suppliers to AI-chip listings, and Eoptolink is now queueing behind them.

That revival has been the year’s defining market story in the territory. Chinese firms have rediscovered Hong Kong after a long fallow stretch, with Luxshare among the marquee names pushing offshore share sales through a window that has swung wide open.

Eoptolink is already listed in Shenzhen, where it trades on the ChiNext board under the ticker 300502.