Fidelity Investments said it will store and trade bitcoin for hedge funds and other professional investors, becoming one of the first Wall Street giants to step into this volatile corner of the financial world.

Most large financial services firms have resisted the idea of trading digital currencies because of concerns about risk, regulations and stability. The price of bitcoin has plunged roughly 67% since its peak last December, partially reflecting doubts about the practical use of a currency that isn’t sponsored by any government.