Shares of Upstart Holdings ($UPST) surged over 40% to hit over two-year highs in early trading on Friday, following bullish upgrades from JPMorgan, Citi, and Piper Sandler. The stock peaked at $79.64 after the company significantly exceeded third-quarter earnings expectations, reporting a loss of just $0.07 per share, far better than the anticipated $0.48 loss. Upstart, an AI-powered lending platform, also exceeded revenue expectations, posting $162.1 million in revenue, surpassing the estimated $149.3 million. The last time the stock traded at these levels was 9 May 2022. Its shares fell more…