Can Hong Kong hold its ground as Nasdaq brings Wall Street into Asian hours?

Nasdaq is set to extend trading hours on its exchange to nearly 23 hours a day starting December 6, bringing Wall Street into direct competition with Asian markets. This expansion introduces an overnight window from 9pm to 4am Eastern Time, which overlaps with normal trading hours in Hong Kong and Beijing. The Securities and Exchange Commission approved the plan in April, but its launch still depends on market data systems and further rule changes.

Nasdaq claims this move is in response to growing demand from Asian investors. Hong Kong, being an open financial hub with unfettered capital movement, is expected to feel the immediate effects of this extended trading window. The overlapping trading period is anticipated to tighten intraday price correlations across various sectors, particularly technology, semiconductors, electric vehicles, and biotechnology.

Market participant Wang Gang, chairman of asset manager Jiangyue Fund, said that price swings in US markets could be reflected in Hong Kong trading hours, while the opposite effect may also occur. Despite these potential influences, some market observers, like Bank of East Asia's Jason Chan, believe the change won't significantly divert trading activity towards US equities, as the main catalysts for US equities still lie outside Asian daytime hours.

Hong Kong investors already have access to daytime US exposure through locally listed ETFs and index futures. To protect its market share, Hong Kong's exchange plans to extend its after-hours derivatives trading session to 4.15am from 3am starting March 2027, pending regulatory approval.