It was a long wait, the Parity problem still unresolved. A bug in Parity, a popular wallet for the cryptocurrency and decentralized application platform Ethereum, may have resulted in more than $150 million worth of ether being permanently frozen. The bug affects Parity multi-sig (multi signature) wallets, which require more than one owner to "sign" a transaction.
The crypto coin community may feel intimidated the CBOE bitcoin contract so money is rotating into the safe haven of alts.
Look for exhaustion in today's session before 640 and a test of 520 by December 24, probably sooner.