Stock Connect's northbound eligible list runs to roughly 2,600 A-share names. Not the right 2,600 (the eligibility criteria, administered by HKEX's Market Development Division in coordination with SSE and SZSE's listing supervision teams, weight listing age and governance structure over market performance, which is a coherent set of rules that happens to exclude exactly the mainland AI names Hong Kong's buy side has been chasing hardest). Baidu's Monday announcement that it plans to spin off Kunlun, its AI chip subsidiary, for a standalone HKEX listing is the direct response: a Hong Kong-domiciled vehicle gives offshore institutions and family-office portfolio managers the mainland AI-hardware exposure the Connect regime will not route through the northbound channel.

Smartkarma's IPO coverage team flagged Monday that near-term sell-off risk in Hong Kong new issues is elevated, citing cornerstone holder lock-up pressure as the proximate mechanism. So Kunlun prices into that. The first hard gate in the deal timeline is the Form A1 listing application submitted to HKEX's Listing Division, whose receipt date Baidu's deal team controls and whose publication date Baidu does not.