The largest money market mutual funds most used by DC plans

U.S. defined contribution assets, in millions, as of June 30, 2017.
RankFundAssets
1Vanguard Federal Money Market$16,211
2Fidelity Gov't Cash Reserves$9,441
3Fidelity MM Trust Ret. Gov't$8,764
4Fidelity MM Gov't Portfolio$5,994
5Wells Fargo Gov't Money Market$5,699
6Vanguard Prime Money Market-Adm.$4,532
7American Funds U.S. Gov't$4,307
8Federated Gov't Obligations$3,408
9Vanguard Treasury Money Market$2,691
10Schwab Money Market$2,413

Recommended for You
S&P 500 Dividend Aristocrats produces better returns, lower risk than overall index
S&P 500 Dividend Aristocrats produces better returns, lower risk than overall index
60/40 portfolio's sharp rebound in November
60/40 portfolio's sharp rebound in November
Hedge funds' quarterly performance flat; equity, fixed income down
Hedge funds' quarterly performance flat; equity, fixed income down