Is this time different? "It better be," warns BofA strategist Michael Hartnett. By one metric, stock valuations are beyond what was seen in 2000.

Tesla stock rose Friday as investors suddenly appeared more optimistic about the outlook. It’s also possible that traders are in control of the recent rally.Shares of the electric-vehicle maker jumped ...

Trading in Palantir shares was subdued on Thursday, coming after Wednesday's sharp reversal in price action. The stock has ...

Generally speaking, what's considered a reasonable price-to-earnings ratio is the same as a company's rate of earnings growth. For instance, Nvidia's per-share profits are projected to grow by an ...