Investors are betting the first U.S.-listed bitcoin exchange-traded fund is about to get the go-ahead.

Securities regulators could rule as early as next week on as many as four applications for ETFs that will buy bitcoin futures contracts rather than the cryptocurrency itself. Over the next two weeks, the Securities and Exchange Commission may either approve, reject or delay the proposals ProShares, Valkyrie Investments, Invesco and VanEck submitted in August.