Not even halfway through the trading day and already almost 5,000 micro Bitcoin futures contracts have traded hands, or ~$30 million of notional in all.
$CMEpic.twitter.com/cUiFnKLhP1
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They were normal sized when they launched, less than $100k per contract 
Yeah by normal I mean “of comparable size to other futures on CME” — for example the ES mini contract is about $200k notional
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