If like me you need to open a brokerage account, Fidelity or Charles Schwab seem like credible choices.
If you already have a retirement account, you might be able to open an brokerage account there too and save yourself minor hassle — but make sure they actually like you buy inverse ETFs (TIAA does not, for example).
If you have a SEP-IRA, it may let you trade inverse ETFs without needing a separate brokerage account (but see warning above about not betting money you can’t afford to lose).
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