There are more ETFs listed in the U.S. than stocks, and more launch every month. Two funds tracking what sounds like the same index can hold different companies, charge very different fees, and drift apart by percentage points over a decade. Those differences live in prospectuses, daily holdings files, and index methodology documents almost nobody reads. The ETF Examiner reads them. We break down how a fund is built, what it actually owns, what it really costs once spreads and tax treatment are counted, and how it has performed against the funds you would realistically consider instead. Whether you are choosing your first index fund or auditing a portfolio you already hold, this is where you find out what you own.