Group 1: Company Performance - Upstart Holdings, Inc. (NASDAQ:UPST) experienced a significant decline of 9.43% on Wednesday, closing at $62.42, ending a four-day winning streak [1] - Upstart's net interest income fell by 13.77% in Q2 to $45.6 million from $52.88 million year-on-year [3] - Despite the drop in net interest income, Upstart swung to a net income of $5.6 million from a net loss of $54.57 million in the same period last year, with total revenues more than doubling to $257.29 million from $127.63 million year-on-year [3] Group 2: Market Competition - Klarna Group PLC's market debut put pressure on Upstart and other competitors, as it opened at $57.2 and ended the day up 14.55% at $45.82, raising concerns about increased competition in the lending industry [2] - The entry of Klarna into the US market is seen as a factor contributing to heightened competition among "buy now, pay later" companies [2]