Caterpillar warned in a late-Thursday filing that its bill from Trump tariffs imposed in 2025 will range from $500 million to $600 million in Q3, an extra $100 million compared to its outlook on Aug. 5. Caterpillar stock was the biggest loser on the Dow Jones Industrial Average in early Friday stock market action, as Dow and S&P 500 futures both pointed modestly lower. Caterpillar said the higher-than-expected impact stems from “several additional clarifications and additional tariffs” announced since Aug. 5.