s&p 500 rapid rise history mirrors the roaring twenties tech bubble as market momentum defies gravity once again
As the S&P 500 surges at a pace unseen since the 1920s, historians are drawing eerie parallels to the Roaring Twenties tech bubble—a period of innovation-fueled euphoria that ended with the Great Depression. Like the radio and automobile booms of that era, today's AI and blockchain revolutions are driving unprecedented gains, with the index climbing 30% in just nine months. But just as the 1929 crash followed the same speculative fever, some analysts warn that today's rapid rise history is repeating itself, with overleveraged positions and valuation gaps echoing the past. "We're seeing the exact same pattern of irrational exuberance," says Dr. Helen Carr, a market historian at Columbia University. "The question is not if we'll correct, but when—and how hard."