"Futures on the world's most popular cryptocurrency surged as much as 26% in their debut session on Cboe Global Markets Inc.'s exchange, triggering two temporary trading halts designed to calm the market," per Bloomberg:

• "Initial volumes exceeded dealers' expectations, while traffic on Cboe's website was so heavy that it caused delays and outages."
• Why it matters: "The launch of futures on a regulated exchange is a watershed for bitcoin, whose surge this year has captivated everyone from mom-and-pop speculators to Wall Street trading firms. "

Be smart: "The new gold," or a tulip craze? Bloomberg View brings us Bitcoin in one sentence: "No one's in charge."

Go deeper: A quarter trillion dollars is at risk when bitcoin crashes — and that’s just for starters