Are ETFs SIPC insured?

ETFs themselves are not "insured" against losing value. If the market or the ETF's holdings fall, the ETF price can fall too.

In the U.S., many brokerages are members of SIPC (Securities Investor Protection Corporation). SIPC protection is about the brokerage's failure: it can help return missing securities or cash in your account up to limits, if the broker collapses. It does not protect you from normal investment losses.

So the practical takeaway is: custody protection can reduce the risk of a broker disaster, but your real investment risk is still driven by what the ETF owns. Diversification and asset allocation are how you manage that.