The significant downward revision in earnings guidance for both Q1 and Q2 FY24 by Knight-Swift Transportation is a direct indicator of operational and industry-wide challenges. This adjustment is likely to negatively impact investor sentiment in the short term, as it reflects not only the company's performance but also broader industry issues such as oversupply and weather disruptions. The immediate negative reaction in the stock price, dropping by 4.12%, demonstrates the market's sensitivity to earnings revisions and operational challenges within the logistics and transportation sector.