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A sharp market selloff on October 30, 2026 was driven by renewed AI fears around Alphabet, a historic Binance crypto hack, and a collapse in Intel shares, even as Berkshire Hathaway stayed green and new data showed the U.S. economy growing faster than expected.
Major U.S. indexes fell hard, with the Nasdaq down about 3.34% and the Dow off 1.13%. Against that backdrop, Berkshire Hathaway stood out as one of the few large-cap winners, rising while much of the market turned red. The conglomerate was cited at roughly $1.17 trillion in market value.
The U.S. economy expanded at a 3.4% annualized rate over the summer, beating expectations of 3.1% and marking the fastest pace in a year. Consumer spending and business investment powered the gain. The reading arrived just before Tuesday’s midterm elections, adding a contrast between strong macroeconomic data and falling stock prices.
Alphabet suffered one of its worst trading days after investors focused on pressure in search and the cost of the company’s transition into AI. The shift revived a long-running debate over whether legacy search economics can hold up as users increasingly receive direct answers instead of clicking links. At the same time, some investors still argued that Alphabet remains one of tech’s most diversified AI businesses, spanning models, cloud infrastructure, chips, and advertising.
Binance was racing to cover losses after what was described as the biggest crypto heist in history. Hackers reportedly stole $6.3 billion from exchange wallets after compromising a Binance engineer’s laptop and exploiting related weaknesses. About $3 billion was frozen by firms including Tether and Circle, but roughly $3.3 billion remained under hacker control.
Cybersecurity researchers attributed the attack to a North Korean hacking group. If even a large portion of the stolen funds is retained, the haul would represent a material share of the country’s economy, whose 2025 GDP was put at $26.6 billion. The episode underscored how major exchange breaches now have implications far beyond crypto markets.
Despite the scale of the Binance breach, Bitcoin fell only a few percent over several days, a far smaller reaction than in earlier exchange disasters such as Mt. Gox. That muted response suggested a more mature holder base and less dependence on centralized exchanges. Even so, the attack rattled sentiment across digital assets and raised new questions about security architecture.
Intel shares collapsed by roughly 30% in the session and were down about 50% from prior highs near $140. The stock had rallied over the past year on U.S. industrial policy support and optimism around foundry demand from hyperscalers, but those gains were largely erased. Investor reaction to management commentary was especially severe, with even longtime market boosters expressing open frustration.
Reddit also sold off after executives said Google was still crawling the platform heavily, but AI mode was not sending users back as traditional search once did. Management signaled the company is no longer counting on that referral traffic returning. In response, the platform is leaning further into a logged-in experience, effectively tightening access around its community and data.
Outside trading, interest around Warren Buffett and Berkshire Hathaway collectibles highlighted the company’s unusual cultural reach. Rare signed uncut dollar bills that once sold for a few thousand dollars have recently fetched as much as $24,000. A 1947 Woodrow Wilson High School yearbook featuring a young Buffett and the line “a future stock broker” was showcased as one of the more striking items in that niche market.
The day captured a market caught between strong economic growth and deep unease over technology, cyber risk and earnings durability. For investors, the contrast between falling momentum names and resilient value plays such as Berkshire Hathaway sharpened the debate over what kind of assets can still provide real margin of safety.
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