The supposed reason: a Business Insider story claiming that Goldman Sachs planned to abandon its rumored pursuit of a cryptocurrency trading desk.
source https://www.google.com/url?rct=j&sa=t&url=http://fortune.com/2018/09/09/goldman-bitcoin-fake-elon-musk-ethereum-tezos/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNEshcDIVTAKPEVYIj9epmxW6fRSNg
