Without position size caps or other safeguards, a strictly proportionate cap weight can give an unwanted influence to very large or mega-cap companies. This can have the effect of diminishing a fund's ...

Dimensional Fund Advisors' latest research adds to existing literature highlighting sometimes-overlooked downsides with the ongoing rush to low-cost ETFs and other products.

A particularly convenient kind of index fund to invest in is an exchange-traded fund (ETF) -- a fund that trades like a stock ...