Almost any type of investment is allowed within an IRA, including stocks, bonds, mutual funds, pensions, unit investment trusts (UITs), exchange traded funds (ETFs), and even real estate. If you want to buy ETFs, it’s usually best to open an IRA, Roth IRA, or a taxable brokerage account. Depending on where you open these accounts, you’ll likely have access to a much wider range of funds, including a wide variety of mutual funds and ETFs. IRA accounts can improve the tax efficiency of ETFs.
However, you can buy shares in leveraged ETFs, which offer multiple times the daily returns of a particular type of investment. This gives you many of the same return features as buying a margin fund.