Bitcoin was recently trading at about $18,400, a more than 11% decline over the last 24 hours. The largest cryptocurrency by market capitalization last fell below $19,000 on Oct. 21. Ether was recently changing hands a little above $1,300, off more than 16% from Monday, same time. Other major altcoins sank by double digits to cap a turbulent day that saw crypto markets sink immediately following the Binance/FTX announcement, rise hopefully and then sink again as investors absorbed the rapid decline of one of the crypto industry’s leading lights.