As artificial intelligence fuels mega-cap stock gains, some investors worry their index funds are now tied too tightly to Big ...

A reader asked last week what was driving the S&P 500 earnings growth. The fact is the biggest market cap stocks, some of which have the larger earnings weights, are pushing the market higher. It’s a ...

The first half of 2024 is about to close its books, and one of the notable market stories so far has been the difference in performance between the market cap weighted S&P 500 index and its equal ...

As stocks climb and some sectors look pricey, investors are rethinking how to spread risk across company sizes. Fund ...