Investor Ruane Warns Stock Market Crash May Precede Any Boom
Investor Christopher Ruane says a stock market crash may come before a boom, citing weak confidence, stretched US tech valuations and no clear catalyst in the UK. The Nasdaq has corrected in recent weeks, though it and the FTSE 100 are each up 9% in 2026.
UK investor and writer Christopher Ruane said on November 15, 2026 that a stock market crash may come before a boom, as fears grow over stretched US technology valuations. It is his own view, and he admits nobody can know.
The tech-heavy Nasdaq Composite index in the United States has been in a correction over the past several weeks. Ruane said investors worry the slide could spread to other parts of the market.
Why a crash looks possible
Ruane sees a legitimate case for concern. Economic confidence is weak, consumers are tightening their belts and "some valuations look loopy", he said.
He also noted that the same was true for much of the past several years, and the market kept rising. Stocks have held up so far in 2026. The FTSE 100 is up 9% this year, and the Nasdaq is up by the same amount despite its recent turbulence.
That resilience cuts both ways, in his reading. A crash could hit hard when it comes. But it may also reflect investor confidence, and if artificial intelligence delivers the benefits claimed for it, Ruane said, corporate profits could soar. He called that "a big if".
The case for a boom
Ruane pointed to the FTSE 100, which hit new all-time highs this year before easing back. He still sees it as good value, with a dividend yield of 3.1%.
Cheap shares do not correct themselves, though. In his view a catalyst is usually needed, such as an unexpectedly strong earnings statement or a takeover bid. With the UK economy lacklustre and consumer confidence weak, he sees no obvious one for the market as a whole.
"Looked at that way, I reckon we could see a stock market crash before a stock market boom," he wrote. He added that nobody really knows, and cited Warren Buffett's line that the time to be greedy is when others are fearful.
His own move: Wise
Rather than try to time the market, Ruane said he is focusing on individual stocks. He recently added to his holding in Wise Group, which has a market capitalization of about £9bn.
Wise reported first-half results this week. Active customers rose 21% year on year to 16m, and net revenue rose 23%. Ruane flagged one risk: money laundering inquiries have hit the share price before, and he sees that as ongoing given how many cross-border payments the company handles.
Ruane owns shares in Wise. His comments are personal opinion, not investment advice.
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