These things can fluctuate back and forth in the final hours/minutes but early modeling of tomorrow’s fixing flows from a bank that sees a ton of it says the dollar will be sold across the board.
Typically these flows come from out-performance in US securities markets relative to overseas markets. Investors sell the “extra” dollars they’ve accumulated in their accounts and rebalance their portfolios buy buying currencies in the markets that have under-performed.
Take this with a big grain of salt but watch this space for updates tomorrow as the actual orders begin to flow in.