The U.S. Breakwave Tanker Shipping ETF (BWET), which tracks crude oil shipping prices, has surged approximately 3600% year-to-date as of September 11, making it the best-performing non-leveraged fund in the U.S., CNBC reported. The U.S.-Iran conflict has heightened tensions for oil tanker shipments in the Strait of Hormuz, exacerbating freight rate pressures and turning this once obscure shipping investment into one of Wall Street's hottest trades.