It’s pretty simple, really.

If your account is between and then your annual fee rate is:
$0 $99,999 1.00%
100,000 999,999 0.75%
1,000,000 4,999,999 0.50%
5,000,000 ? Let’s Talk

Fees are assessed and charged in advance on a quarterly basis. At the end of each quarter, a snapshot of your account’s market value is taken and one fourth of the annual fee percentage is charged.