It’s easy to find Top 10 Holdings for any ETF on our service. Just find ETF you like, for example, Vanguard S&P 500 ETF (or just Vanguard 500) and you’ll find the table with top holdings like here:

Vanguard 500 Top Holdings
Vanguard 500 Top Holdings

Here you can see Top Holdings for this ETF such as Apple Inc (3.27%), Microsoft Corporation (2.47%), Exxon Mobile (1.81%) and others.