The risk of too great a concentration in big cap tech stocks is again back in focus. Many have been saying that a 5%-10% pullback is overdue, certainly for big cap tech. The correction may already be starting: many big tech names, particularly semiconductors, were down in the high- to mid-single digits last week. (market cap vs. country GDP) Apple $2.9 trillion France $2.9 trillion Source: Wells Fargo Microsoft bigger than Italy? "Using 1999 as our example, we wonder how much longer the current chart (Apple > France and Tesla > Taiwan) is sustainable," he writes.

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Persons: Today's Russell rebalance, Wells, Chris Harvey, Harvey —, Russell, There's, David Faber, Wells Fargo's Chris Harvey, Tesla, Harvey, Dan Ives, Ives Organizations: NYSE, Nasdaq, Intel, AMD, Broadcom, Apple, Microsoft, Nvidia, Wells, today's Tech, General Electric, Cisco, Walmart, Nokia, Pfizer, ExxonMobil, IBM, Citigroup, Tesla, Big Tech Locations: France, Italy, Mexico, Taiwan, Wedbush