China's STAR50 Index Slides 4.81% to 1,252.28 in AI Bubble Selloff

Shanghai's AI Selloff Continues

China's STAR50 index slid 4.81% on Tuesday, October 27, closing the session at 1,252.28 as the country's artificial-intelligence stock bubble kept deflating. The STAR50 tracks the 50 largest companies on Shanghai's STAR Market, the tech-heavy board where much of the country's AI-linked capital trades. The drop extends a drawdown of roughly 40% since July, a slide that has erased about $480 billion in value, and market data shows technology names led the selling in the late session. The broader CSI 300 fell about 4.81% over the 24 hours through that close. Bitcoin held near $80,400 through the session, and two scenarios now decide whether the equity stress reaches digital assets.

The most direct route into crypto would be Chinese selling, but that channel does not exist: the People's Bank of China bans crypto trading outright and earlier drove miners offshore, leaving no direct path from a Chinese equity unwind into Bitcoin. The transmission instead runs through Western markets. If upcoming US tech earnings show that AI infrastructure spending still outruns the revenue it generates, concerns about stretched valuations could spread beyond equities into risk assets more broadly, carrying the selloff toward markets that had nothing to do with the original Chinese unwind. Spot Bitcoin ETFs have tied Bitcoin more closely to tech stocks than in earlier cycles, which raises the stakes: fund managers routinely sell their most liquid holdings first during sharp equity drawdowns, and Bitcoin now sits in that liquid bucket for many portfolios. Prediction markets are also assigning rising probabilities to pressure on Western chip and AI stocks, a second channel through which the STAR50's slide could reach markets far from Shanghai. A decline of that size has pushed the index under its longer moving averages, so trend followers see no technical repair in the tape yet.

Two Scenarios for Bitcoin

Ki Young Ju, chief executive of analytics firm CryptoQuant, argued in an October 22 post that an AI bubble burst would not hurt Bitcoin much, because Bitcoin largely missed the AI rally in the first place. Investors who sold Bitcoin to chase AI stocks may have already exited, he wrote, and it may now be time to rotate back into Bitcoin. He added a caveat: an AI crash is not automatically bullish or bearish for crypto, and the two markets look largely unrelated to him. Scott Melker highlighted comments from Brett Winton of ARK Invest, who said intelligent computing absorbs capital like a “black hole”, raising the opportunity cost of holding Bitcoin for investors weighing the two markets side by side.

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An October 22 post.

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The rotation case rests on three points. Buyers who exited Bitcoin to chase AI stocks could return. Bitcoin carries no exposure to chip supply chains or state subsidies. And rotation could support prices once the early risk-off trades fade. On the other side, the contagion case stays live. US tech earnings could confirm that AI spending still exceeds revenue. Spot Bitcoin ETFs have linked Bitcoin to tech equities. And liquid assets are the first to be sold when equities drop hard. Traders are watching clearly defined support and resistance levels into the busiest stretch of the earnings calendar. Ted Pillows noted that Binance has continued buying, and added that Bitcoin needs a daily close above $81,000 to regain momentum. With spot near $80,400, that threshold sits just above the market, and a daily close through it would be the recovery signal momentum traders are waiting for. Michaël van de Poppe flagged a calendar crowded with macro events and corporate results, noting that the consensus that markets must fall together keeps strengthening, and that this kind of consensus usually forms near a local bottom.

The decisive variable this week sits outside China. With no direct channel from the STAR50's sell list into crypto, the question is whether US earnings validate or undercut the AI spending story, because that story, not Shanghai's tape, now governs the correlation between Bitcoin and tech equities. The $81,000 daily close gives the debate a clean threshold: holding above it would support the rotation case Ki Young Ju outlines, while losing it would hand the argument to the contagion camp, with ETF-linked selling as the transmission. Bitcoin sits just under the line near $80,400, so the next run of earnings calls and Federal Reserve signals should settle which scenario holds.