The ProShares UltraShort Bitcoin ETF (SBIT) experienced its highest daily inflow since its April launch, attracting $18.8 million as investors bet against Bitcoin amid concerns that the recent rally, spurred by Donald Trump's election, may be overdone. Additionally, the ProShares Short Bitcoin ETF (BITI) saw approximately $23 million in inflows over the past two trading sessions, marking one of the year's highest totals.