Core Viewpoint - Dexcom shares fell 12% in premarket trading due to executives indicating that the company's 2026 growth forecast may not meet Wall Street expectations [1] Company Summary - Dexcom is a medical device maker that specializes in continuous glucose monitoring systems [1] - The decline in share price reflects investor concerns regarding future growth potential [1] Industry Summary - The medical device industry is facing scrutiny as companies adjust growth forecasts amid changing market conditions [1] - Investor sentiment in the sector may be influenced by individual company performance and guidance [1]