UPDATE: This is how you can withdraw from your 401(k) at 55 -- without paying a penalty
The firms, which focus on active management, are seeking flexibility to lower fund fees.
With average fees falling, more funds should cut theirs, but too often they aren't.
American Funds and American Century saw the largest percentage growth last year among prominent TDF providers.
Goldilocks knows there are problems with being too hot or too cold.
Stepping back to see the forest for the trees.
During 2016, fees hit record lows, assets reached a new all-time high, and asset-allocation techniques improved.
Big contrast with gloomy forecasts from BlackRock, State Street Global Advisers and TIAA.
Five candidates stand out from their counterparts.
Looking at performance since 2000 creates a better picture of which funds have delivered for investors.