All my dividends and interest are used to purchase additional shares thus showing an increase in value of my portfolio. (pwlcapital.com)
When making your payment, bear in mind that the total market value of your account is based on the prior business day's market value of the portfolios in your 529 account. (fidelity.com)
To return to your target asset allocation, multiply the total value of the portfolio by the target asset allocation percentage. (barbarafriedbergpersonalfinance.com)