Keep in mind this is an aggressive fund:

The ratio is as following:

Domestic Equity Funds	60.44
Spartan 500 Index - Investor Class	48.20
Spartan Extended Market Index Fund - Investor Class	12.25
International Equity Funds	24.56
Spartan International Index Fund - Investor Class	24.56
Investment Grade Bond Funds	14.97
Spartan U.S. Bond Index Fund - Investor Class	14.97
Cash & Net Other Assets	0.03
NET OTHER ASSETS	0.03

 

85% is in stock. So you better think carefully. The fee is not bad, 0.23%.