Stocks making the biggest moves after hours: CSX, PPG Industries, Knight-Swift Transportation and more
A CSX freight train is seen in Orlando. Paul Hennessy | Lightrocket | Getty Images Check out the companies making headlines in after-hour trading. CSX — The transportation company dropped 5% after missing Wall Street expectations for revenue in the second quarter, coming in at $3.7 billion against a $3.74 billion estimate from analysts polled…