Railroad stocks jumped today as word came that legendary investor Warren Buffett of Berkshire Hathaway had accumulated 11% of rail carrier Burlington Northern’s stock, and also invested in two other undisclosed rail carriers.

The moves were reported in SEC filings required when Buffett’s stake in Burlington Northern reached certain thresholds. The other two investments are below those thresholds for disclosure, but The Street.com’s Jim Cramer has speculated those two carriers may be Norfolk Southern and Union Pacific. In any case, every rail stock surged Monday on the news. Burlington Northern, for example, was up 6.5%.

What’s interesting to Supply Chain Digest is that Buffett likes investing in stocks that he believes have strong pricing power.  Research by Bear Stearns and others have found rail rates continuing to stay strong even as truckload rate hikes are moderate, and this is at least one indication that may be the case for years to come.