When a woman gets a caesarean section at the gleaming new Van Ness location of Sutter Health’s California Pacific Medical Center, the price might be $6,241. Or $29,257. Or $38,264. It could even go as…

A new army of social media-enabled day traders is helping push stocks to records and turning companies into market sensations. As trading by individual investors boomed during the coronavirus pandemic, so has the popularity of…