This may be a very stupid question but I was wondering how Vanguard ETFs in the S&P 500 can track the market when the market they operate in is closed whilst the market they track is open. I don’t see my Vanfuard S&P500 ETF fluctuate past 16:30 despite the fact the market it tracks still trading.
I appreciate this might be an odd question but one I’ve wondered about a lot since becoming interested in ETFSs