Two U.S. indexes outgain the Hang Seng; A-share observations remain at September 30

Both U.S. indexes rise, with the Nasdaq gaining more

On October 5, the latest full trading day, the Nasdaq Composite rose 1.05% and the S&P 500 rose 0.66%, both compared with their October 2 closes. The two indexes moved in the same direction, but index gains alone cannot establish whether the advance was broad-based among their constituent stocks.

Sources: [1] [2]

The Hang Seng also rises, with a smaller gain than either U.S. index

The Hang Seng Index closed on October 5 up 0.28% from October 2, a smaller gain than the Nasdaq Composite and S&P 500 over the same period, based on each index's closing records. Markets close at different times, so this comparison shows only the direction and size of moves within their respective measurement windows. It does not establish that a common driver moved them in sync.

Sources: [4] [1] [2]

The Shanghai Composite observation is from an earlier date

The Shanghai Composite's latest full trading day was September 30, when it rose 0.31% from its September 29 close. This move covers an earlier measurement window and cannot be combined with the October 5 gains in U.S. and Hong Kong stocks as a single day's market performance.

Sources: [3]

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What to watch next

• Whether the Nasdaq Composite and S&P 500 continue to move in the same direction on the next full trading day, and whether the Nasdaq's gain remains larger.
• Whether the Hang Seng Index moves in the same direction as the two U.S. indexes on the next full trading day.
• Once valid closing comparisons are available for the CSI 300 and Hang Seng Tech Index, check whether the two indexes within each market move in the same direction.
• Once Bitcoin and Ethereum updates are available, observe the direction of their moves over the same clearly defined comparison window.