Investors are struggling to get excited with growth that's cooled way down.Shares of retail chain Tractor Supply (TSCO -5.57%) slumped on Thursday after the company reported financial results for its third quarter of 2024. As of 1 p.m. ET, Tractor Supply stock had dropped 5%.Steady business but lacking growthTractor Supply has nearly 2,300 stores across the U.S., selling things such as gardening supplies, animal feed, and more. Demand is steady but not necessarily growing right now. The company's Q3 revenue ...