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China’s STAR50 index closed at 1,315.5 on October 26, 2026, marking a 39.8169% decline from its July 9 peak of 2,185.83. Reuters estimated this drop erased approximately $480 billion in market value. Over the identical calendar dates, Bitcoin increased by 26.6%.
Historical Comparison of Tech and Crypto
Tencent’s closing data confirms the 71-session loss for the STAR50, an index of 50 large, liquid companies on Shanghai’s technology board. This decline represents equity repricing rather than the broader performance of China’s AI sector. When compared against 9,201 sampled 71-session windows in US index histories, only one S&P 500 window matched the magnitude of this loss. However, because these overlapping windows share observations and cluster around crisis periods, they do not represent independent crash probabilities.
Historical episodes show Bitcoin often moves with broader tech selloffs. From February 19 to March 23, 2020, the Nasdaq 100 fell 27.9% while Bitcoin dropped 33.4%. In the 2022 bear market, which combined Federal Reserve tightening with FTX-specific stress, the Nasdaq 100 lost 33.7% and Bitcoin lost 64.3%. A shorter episode in January 2025 saw the Nasdaq 100 fall 3% and Bitcoin decline 2.6% between January 24 and 27.
Funding Signals and Contagion Risk
Despite the divergence in cumulative returns, short-term correlations remain significant. Bitcoin and the Nasdaq 100 exhibited a daily-log-return correlation of 0.63 over the 30 matched US market dates ending October 26, up from 0.36 at the start of the period. Within the July-October window, the CSI 300 fell 15.9%, US semiconductors declined 14.5%, and the Nasdaq 100 lost 1.5%.
Current market indicators provide mixed signals regarding contagion risk. Farside data shows net US spot Bitcoin ETF outflows of $636 million on October 22, followed by net inflows of $110 million on October 26. US high-yield credit spreads eased from 3.4% to 3.3% over the same four-day span. The secured overnight financing rate (SOFR) stood at 3.93% on October 26, three basis points above the Federal Reserve’s 3.9% reserve-balance rate. The International Monetary Fund notes that margin calls and crowded positions can force leveraged funds to unwind holdings across markets, a mechanism that could transmit stress from equities to crypto assets if funding pressure persists.
Frequently Asked Questions
How much market value did the STAR50 index lose?
Reuters estimated the STAR50’s 39.8169% decline from July 9 to October 26, 2026, erased roughly $480 billion in market value.
What was the correlation between Bitcoin and the Nasdaq 100 in late October 2026?
The daily-log-return correlation between Bitcoin and the Nasdaq 100 was approximately 0.63 over the 30 matched US market dates ending October 26, 2026.
