Hong Kong's stock market is bracing for significant sell-side pressure as the six-month lock-up period expires for a wave of high-profile artificial intelligence and semiconductor listings.

Shares worth approximately US$11.5 billion are set to hit the market in the coming days, marking a critical stress test for investor appetite in the region's tech sector.

The impending supply surge includes shares from prominent AI firms such as Zhipu AI and MiniMax, alongside other semiconductor picks that have drawn substantial interest since their initial public offerings.

With some of these companies also eyeing secondary share placements, the potential for downward price pressure is amplified, creating a complex liquidity environment for traders and institutional investors.

This development arrives against the backdrop of a robust first half for the Hong Kong Exchange, which has reasserted itself as a global capital-raising hub.

Initial public offering and secondary listing proceeds surged 84.3% year-on-year to US$26.4 billion in the first six months of the year, driven largely by enthusiasm for technology and innovation themes.