Or would you say that e.g. an ETF tracking MSCI ex-US is not a passive fund?
I’d consider someone that puts $50 into Coca Cola stock every paycheck a passive investor
They’re not. Passive vs active are terms of art in investing. They refer to the degree selection effect is at play.
You buy VTI, you're impacted.
VTI “seeks to track the performance of the CRSP US Total Market Index” [1]. Not the NASDAQ 100. It will include the latter’s components. But it shouldn’t reference its weights.
[1] https://investor.vanguard.com/investment-products/etfs/profi...