Upstart Holdings faces securities fraud probe after stock drops on missed earnings and tech issues

Upstart Holdings is under investigation by the Portnoy Law Firm for possible securities fraud following a sharp stock price drop. The decline was triggered by the company's disclosure that its third-quarter financial results missed expectations due to problems with its proprietary Model 22 underwriting system. This system caused reduced borrower approvals and conversion rates, tightening lending volume and revenue. The investigation may lead to a class action lawsuit as investors seek to recover losses from the valuation collapse.