You can continue to trade cryptocurrency or make transfers to and from your bank. Additionally, if you placed trades on Tuesday, December 4th, they ...
source https://www.google.com/url?rct=j&sa=t&url=https://support.robinhood.com/hc/en-us/articles/360001477186-Markets-Closed-on-Wednesday-December-5th-2018&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNEZ-2t1q7e3s09V3dDAPqj1nDPt6A