Interest in cryptocurrency markets among traders is on the rise, especially since this red-hot asset class has a feature that the overall stock market has lacked for the last couple of years: volatility. Its abrupt swings in price make it an interesting arena to observe, though those swings also keep some potential traders—wisely—on the sidelines.

Our recent column on trading bitcoin futures (“Small Traders Should Avoid Bitcoin Bourses,” Dec. 23, 2017) generated quite a bit of feedback, much of it skeptical—but behind that Read more from barrons.com…

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