The Breakwave Tanker Shipping ETF (BWET) returned over 1,700% this year as of Tuesday, making it by far the best-performing fund on the market. Excluding the lengthy roster of leveraged funds, the next-best-returning fund has been the Arm Holdings PLC ADRHedged ETF (ARMH), which, at an impressive 132% is still less than one-tenth the returns of BWET. While the fund has been the top performer in 2026, there are plentiful instances of ETFs getting triple-digit rates of return during the first six months in given years, especially recent ones, data from Morningstar Direct show.