
Several big investment firms said yesterday (Tuesday) that they are buying stakes in a Bitcoin hedge fund - yet another sign that major players in the investing world are getting serious about the digital currency.

Fortress Investment Group, with about $58 billion in assets under management, along with venture capital firms Benchmark Capital and Ribbit Capital, are teaming up with San Francisco-based Pantera Bitcoin Partners LLC, a hedge fund operator that buys and sells digital currencies like Bitcoin.