Krispy Kreme, Opendoor, Rocket and Kohl’s are merely the public face of a summer boom in bets by private traders.

The latest crop of meme stocks was seeing mixed performance on Friday. Notably, shares of Opendoor Technologies Inc. and Rocket Cos. were up sharply. Rocket was trading at $16.80, up $2.03, or 13.7%, ...

Krispy Kreme’s ($DNUT) stock has been on a sweet run, surging over 30% in the past month—including a remarkable 25% jump just ...

Another reason for the initial meme stock trades may have been that interest rates were near record lows. Cash offered almost ...