Nasdaq Falls 2.86%, Hang Seng Rises 1.46%: Listed Stock Indices Diverge on October 30

Both US Indices Fall, with a Larger Decline in the Nasdaq

On October 30, the latest completed trading day, the Nasdaq Composite fell 2.86% and the S&P 500 fell 1.82%, both relative to their October 29 closes. Both indices moved in the same direction, with the Nasdaq posting the larger decline. This edition's data do not include constituent contributions, so they cannot establish which companies or sectors drove the decline.

Sources: [2] [1]

Hang Seng Rises, Shanghai Composite Falls; the Same Trading Date Does Not Mean the Same Measurement Window

On October 30, the Hang Seng Index rose 1.46% and the Shanghai Composite fell 1.44%, both compared with their respective October 29 closes. The indices listed here therefore diverged in direction across markets, but their closing times differ: in Singapore time, the measurement windows for the Shanghai Composite, Hang Seng Index and US indices ended at 15:00 on October 30, 16:00 on October 30 and 04:00 on October 31, respectively. These data show whether each market rose or fell over its latest completed trading day; they cannot establish how the markets moved in relation to one another at the same moment.

Sources: [4] [3] [2] [1]

Related news and discussion

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  2026-10-30 23:00 (UTC+8) Read the source

What to watch next

• On the next completed trading day, do the Nasdaq Composite and S&P 500 continue to move in the same direction? Is the Nasdaq's decline still larger?
• Do the Hang Seng Index and Shanghai Composite continue to move in opposite directions on the next completed trading day?
• Once valid closing-level comparisons are available for the CSI 300 and Hang Seng TECH Index, check whether the divergence observed in this edition also appears in those indices.
• Once updated, valid comparison windows are available for Bitcoin and Ethereum, reassess how their direction of movement relates to equities and specify the differences between the windows.