Top fund manager David Winters says railroad companies are like a “canary” that signals how the economy is doing, and increased recent freight traffic indicates “the canary’s beginning to sing”. Winters tells Bloomberg that he’s finding opportunities in railroad stocks, and says that Warren Buffett and Berkshire Hathaway’s acquisition of Burlington Northern Santa Fe essentially makes Berkshire a railroad play. Geographically, he’s high on stocks in the U.S., Canada, Asia, and Switzerland. He’s avoiding the Eurozone due to the troubles there.