Buffett's comments come after Berkshire Hathaway's BNSF Railway and CSX announced a partnership to provide new coast-to-coast rail services on Friday.

Shares of CSX Corp. fell Monday after CNBC's Becky Quick reported she was told by Warren Buffett that Berkshire Hathaway Inc. isn't interested in acquirin

However, investors should consider how a recession might impact its financial results. Warren Buffett's incredible track record makes him one of the best investors ever. There's no denying that. His successful ability at allocating capital has made Berkshire Hathaway a trillion-dollar business.