Upstart Holdings, Inc. (UPST) shares rallied 7.3% in the last trading session to close at $37.69. This move can be attributable to notable volume with a higher number of shares being traded than in a typical session. This compares to the stock's 13.2% loss over the past four weeks.The optimism surrounding the stock can be attributed to Upstart’s growing partner network. The company’s artificial intelligence (AI)-based lending platform has been selected by several banks and credit unions, which is contributi ...