Meme stock enthusiasm has returned, creating uncertainty for professional investors. Stocks like Opendoor Technologies and Kohl's experienced gains. The S&P 500 and Nasdaq 100 indices reached record ...

Stretched valuations and a surge in speculative trades are raising red flags, even as growth persists.

The return of meme stocks is in full swing with a new collection of clapped-out US long-shot stocks off and racing on markets ...