Goldman Sachs says watch these 5 warnings from the dot-com bubble to know if the AI craze is peaking

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• Goldman Sachs says that AI stock valuations resemble some of the signals of the late 1990s bubble.
• Analysts note rising tech investment, falling profits, and widening credit spreads as risks.
• Mega-cap tech firms' AI spending and corporate debt levels may indicate a market peak.

Markets are worried about shades of 1999 in today's tech-investing landscape, and while there's a lot of debate about whether AI is a bubble,...