Skaman306 | Moment | Getty ImagesHundreds of exchange-traded funds have launched to let investors amplify their bets that a single company stock will either go up or down.This category, single-stock ETFs, now has a total of around 377 U.S. products — 276 of which have launched in 2025, as of Dec. 9, according to Zachary Evens, manager research analyst at Morningstar.Those funds may provide access to some of the most "exciting, biggest technology companies" such as Nvidia, Tesla, Apple or Amazon, Evens said. ...