For more than three decades, investors have been privy to no shortage of next-big-thing trends and game-changing innovations.

Valuations for the biggest stocks in the S&P 500 (^GSPC) are starting to look stretched, raising fresh concerns about ...

Legendary investor Warren Buffett is sitting on nearly $200 billion in cash, signaling major concerns about the stock market.

Torsten Slok, chief economist at Apollo Global Management, recently argued that the stock market currently overvalues a ...

Now, major investment companies are getting in on the act. Goldman Sachs (GS 0.53%) earlier this week stopped short of saying that the entire market is in a bubble, despite pointing out that ...

69% of investors surveyed by E*Trade think the stock market is either fully or somewhat in a bubble. That's up three percentage points from last quarter's survey.

Wall Street's reliance on a small number of high market-value stocks to keep momentum going for the U.S. equities bull market ...

By Brian Nelson, CFA. It's easy to think the U.S. stock market may be in a bubble by just looking at simple P/E (price-to-earnings) ratios. After all, many investors may be fixated on long-term ...

Rosenberg isn't the only one with bubble concerns — but bears have been proven wrong time and again. David Rosenberg isn't giving up on his stock-market bubble call.

John Higgins, the chief markets economist at Capital Economics, has forecasted that the current stock market bubble will continue to inflate until the end of 2025, with the S&P 500 index ...