(https://www.marketwatch.com/story/individual-investor-ranks-are-burgeoning-according-to-interactive-brokers-heres-what-those-investors-are-buying-3725bd0f?mod=mw_rss_topstories) a 32% surge in retail account growth — and if that doesn't set off alarm bells, you haven't been paying attention. This is textbook euphoric excess: mom and pop piling into brokerage accounts after markets have already doubled.

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