BlackJack3DUpstart (NASDAQ:UPST) delivered a good earnings scorecard for the second fiscal quarter on Tuesday, which caused the Fintech's shares to soar 40% immediately after earnings. The positive market reaction traces back to Upstart's strong outlook for the upcoming third-quarter, which implies that the AI lending start-up is set to see a major acceleration of its top line growth. Upstart is not profitable at the moment, but a transition to a low-rate world should help the start-up's earnings prospe ...