USD

ProShares Ultra Semiconductors, traded under the ticker USD, is an exchange-traded fund built to deliver twice the daily return of an index tracking major U.S. chipmakers such as Nvidia, Broadcom and AMD. It does not buy and hold those companies the way a normal fund would. Instead it uses financial contracts like swaps to double each day's move in the index, resetting that target every single trading day. That design makes it a short-term trading tool for betting on swings in the chip sector rather than something meant to be held for years.