U.S. stocks and Shanghai Composite fall, Hang Seng rises; Bitcoin and Ethereum diverge

Consecutive available closing records for the latest completed trading sessions show declines in the S&P 500, Nasdaq Composite and Shanghai Composite, while the Hang Seng Index rose. Over the UTC daily comparison window specified in this edition, Bitcoin fell and Ethereum edged higher. Usable market data are unavailable for the CSI 300 and Hang Seng TECH Index.

Concept illustration for this cross-market observation
Market Pulse concept illustration; not a market data chart.

Two U.S. indexes decline

Comparing consecutive available closing records for September 25 and September 28, the S&P 500 fell 0.77% and the Nasdaq Composite fell 0.92%. Both figures correspond to September 28, the latest completed U.S. trading session.

Sources: [1] [2]

Shanghai Composite and Hang Seng move in different directions

The Shanghai Composite fell 1.67% between consecutive available closing records for September 24 and September 28. The Hang Seng Index rose 0.54% when comparing closing records for September 25 and September 28. The comparison dates differ, so these figures cannot establish why the markets moved in relation to one another.

Sources: [3] [4]

Two cryptocurrencies diverge over the same UTC daily window

Over the recorded window from September 28 at 00:00 to September 29 at 00:00 UTC, Bitcoin fell 1.13% and Ethereum rose 0.06%. This window differs from the closing-price comparison windows used for the stock markets.

Sources: [5] [6]

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What to watch next

  • Check closing records for the S&P 500, Nasdaq Composite, Shanghai Composite and Hang Seng Index for the next completed trading session to see whether the current directions continue.
  • Assess performance within the A-share and Hong Kong markets once usable closing records for the CSI 300 and Hang Seng TECH Index become available.
  • Check changes in Bitcoin and Ethereum over the next complete UTC daily window to see whether they continue to diverge.

Market data

First eight instruments with available percentage changes. Measurement windows may differ; see dates and sources below.
The chart uses the first eight instruments with available changes. Each has its own session or measurement window, so these are not directly comparable returns over one period.
Market records and measurement windows used in this edition
InstrumentPriceChangeSession / window endSourceQuality
S&P 500^GSPC7,683.6899-0.77%2026-09-28Yahoo Finance chartAvailable
Nasdaq Composite^IXIC26,820.3809-0.92%2026-09-28Yahoo Finance chartAvailable
SSE Composite000001.SS3,823.6211-1.67%2026-09-28Yahoo Finance chartAvailable
CSI 300000300.SS——Not providedYahoo Finance chartNo reliable data
Hang Seng Index^HSI24,642.5098+0.54%2026-09-28Yahoo Finance chartAvailable
Hang Seng Tech Index^HSTECH——Not providedYahoo Finance chartNo reliable data
BitcoinBTC83,502.6094-1.13%2026-09-28Yahoo Finance chartAvailable
EthereumETH2,688.6687+0.06%2026-09-28Yahoo Finance chartAvailable

Sources and method

Stocks use their latest complete sessions; crypto assets have explicit measurement windows. Dates are listed in the table. Interpretations are separated from observed facts and can be checked against the original sources below. Read the measurement policy.

  1. S&P 500 — Yahoo Finance chart
  2. 纳斯达克综合指数 — Yahoo Finance chart
  3. 上证指数 — Yahoo Finance chart
  4. 恒生指数 — Yahoo Finance chart
  5. Bitcoin — Yahoo Finance chart
  6. Ethereum — Yahoo Finance chart
  7. NVIDIA Announces a $150 Billion Share Repurchase Authorization Increase
  8. HKEX Welcomes Four New ETFs Tracking HKEX Cross-Market Indices
  9. NVIDIA Launches Open Agent Safety Platform to Secure Agents From Testing to Deployment

Last updated:

For information only, not investment advice. Read all daily observations