Bitcoin's price swings wildly, touching above $19,000 - LA ...

The price of bitcoin swung wildly Thursday, rising to more than $19,000 only to fall sharply within minutes. The frenzy surrounding the virtual currency escalated just days before it starts trading on a major U.S. exchange.

The frenzy even has parts of Wall Street concerned. A group of banks complained that federal regulators approved bitcoin futures, which begin trading Sunday, too quickly and...

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