Ether and altcoins gained as bitcoin was treading water a day out from the Fed's latest interest rate decision.

There's been a rotation in gains over the past day, with ether higher by about 2% and bitcoin relatively flat around $28,000. Ether was trading at $1,810 by 11 a.m. EDT, up 4% according to TradingView data. Bitcoin slipped about 0.1% in the same period to trade at $28,070.

Some altcoins popped after a sluggish start to the week. Ripple's XRP jumped over 11%, Cardano's ADA was up 2%.