Trade in bitcoin at your own risk

Bitcoin. The cryptocurrency is on a wild and volatile ride. The price of a coin has grown ten-fold in the past year, hitting a high of more than $11,000 for one bitcoin yesterday, before tumbling some 20 percent this morning. Everybody, it seems, wants in on the action. But a growing number of economists and investment advisors are trying to warn people off the stuff. Here’s why.

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