Upstart Holdings (UPST -1.20%) stock isn't for the fainthearted. It was up more than 400% at one point last year before losing about half of its value, ending 2023 with a 209% gain. That was just last year. It's been volatile almost since it went public, skyrocketing before plunging, mirroring the stunning reversal of the company's fortunes. Will anything change in 2024? Let's see where Upstart is likely to be in a year from now. An industry ripe for disruption Upstart operates a credit-evaluation platform ...