The potential problem with the Vanguard Financials ETF is what it doesn't own. This ETF's name says a great deal about what it does. In fact, if that's all you looked at when considering this ...

Does Jeff Bezos have a controlling stake in Amazon ... far more than the second-largest shareholder, Vanguard Group, which owns about 6 million. The Amazon.com Inc. is headquartered in Seattle, ...

Among the biggest institutional investors, or companies that own 3M on behalf of the shareholders, are Vanguard, State Street, BlackRock, Geode Capital Management, and State Farm Insurance Companies.

Vanguard doesn't actually explain what the index does, so you have to go to MSCI to ... and brokerage companies were moved into their own classification by Dow Jones and MSCI.