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Bitcoin: 'This is a casino, not an investment'
Illustration: Lazaro Gamio / Axios

Bitcoin is up about 1,700% since the start of the year. Some attribute the surge to ordinary, if enthusiastic, investment, along with the forces of supply and demand. Others say it's a bubble, and that it will ultimately burst. Joe Borg, president of the North American Securities Administrators Association, a grouping of state securities officials, suggests it's the latter. "This is a casino," he tells Axios, "not an investment."

The bottom line: Borg, who is also director of the Alabama Securities Commission, says he could be wrong and that those who say bitcoin is just "another type of investment" will be proven correct. But he sees worrying signs of a classic investment mania.