Comment by dmoy
6 months ago
Why is it really about the index though, if the index fund doesn't track that public index?
If the index fund is tracking some proxy that is float weighted, isn't that what matters? At least when it comes to people's money.
Index funds track an index, thus the name
Yes but they don't track the literal index that we the public see.
They track a float weighted approximation of it
(Typically - I thought QQQ did based on your earlier comment, but it also is float weighted)