China's STAR50, an index of 50 companies on Shanghai's technology board, declined nearly 40% from its July 9 peak to October 26, 2026, according to Reuters estimates that valued the accompanying loss at approximately $480 billion. During the same 71 trading sessions, Bitcoin gained 26.6%.
The divergent performances raise a key question for crypto investors: whether China's technology selloff could develop into broader funding pressure that reaches Bitcoin markets. Falling equities can trigger financing pressure and forced selling across asset classes.
Historical Comparison
STAR50's 39.8% decline over 71 trading sessions represents a rare occurrence even compared to major US stock indexes. Analysis of overlapping 71-session windows in US equity histories through October 26 shows such losses occurred less than 1% of the time in the S&P 500 and Nasdaq 100, and 1.2% of the time in the Philadelphia Semiconductor Index.
The index tracks large, liquid securities on China's technology board and measures equity repricing rather than the performance of China's entire AI industry.
Bitcoin's Relationship to Market Stress
Bitcoin has historically moved alongside broader market selloffs during periods of financial stress. During the COVID market disruption from February 19 to March 23, 2020, Nasdaq 100 fell 27.9% while Bitcoin declined 33.4%. Over the full year 2022, Nasdaq 100 lost 33.7% and Bitcoin fell 64.3%, a period that combined Federal Reserve tightening with crypto-specific stress from FTX.
In a shorter recent episode between January 24 and January 27, 2025, Nasdaq 100 lost 3%, semiconductors fell 9.2%, and Bitcoin declined 2.6%.
Current Market Signals
From July 9 through October 26, CSI 300 fell 15.9%, Nasdaq 100 lost 1.5%, and US semiconductors declined 14.5%, while Bitcoin gained. Within that window, the largest closing peak-to-trough declines were 7.6% for Bitcoin and 8.8% for Nasdaq 100.
Bitcoin and Nasdaq 100 showed a daily correlation of approximately 0.63 over 30 matched US market dates ending October 26, compared with 0.36 at the start of the period, indicating closer day-to-day co-movement in recent weeks.
Contagion Mechanisms
Margin calls, crowded positions, and investor withdrawals can force leveraged funds to unwind holdings across markets, according to International Monetary Fund analysis. Applied to Bitcoin, a wider scramble for cash could overwhelm asset-specific demand.
Recent funding indicators sent mixed signals. US spot Bitcoin ETF flows recorded net outflows of $636 million on October 22 but net inflows of $110 million on October 26. US high-yield credit spreads eased from 3.4% on October 22 to 3.3% on October 26. Secured overnight financing rates stood at 3.93% on October 26, three basis points above the Federal Reserve's 3.9% reserve-balance rate.
Sustained US technology losses accompanied by wider credit spreads, rising funding pressure, and persistent ETF withdrawals would strengthen the case for contagion to Bitcoin. Orderly financing conditions and renewed ETF buying despite further Chinese losses would suggest more limited spillover effects.
