The open letter from Rubric Capital Management to Xperi Inc.'s stockholders highlights several issues that could negatively impact investor confidence and the company's stock price. Criticisms include misleading statements about performance, dilution, and governance practices. Such public disputes and calls for board changes often lead to short-term stock price volatility as investors reassess the company's governance quality and future direction. The negative portrayal of Xperi's practices and performance, coupled with the push for significant board changes, could lead to short-term investor uncertainty and stock price decline.