Fundamentally, FRINX.US's price reflects its Net Asset Value (NAV). This is driven by the underlying securities it holds.

Market Conditions: Overall market sentiment and economic conditions significantly impact investor appetite and, consequently, fund flows. Bull markets often see increased demand, pushing prices up.

Interest Rates: Rising interest rates can decrease the attractiveness of fixed-income assets, causing outflows and potentially lowering the fund's price.

Fund Performance: A track record of strong performance attracts investors, increasing demand and potentially raising the fund's price relative to its NAV.

Expense Ratio: A lower expense ratio makes the fund more attractive to investors, potentially leading to increased investment and a higher price.

Fund Flows: Large inflows increase demand, potentially pushing the price higher. Conversely, large outflows can put downward pressure on the price.

Underlying Asset Performance: If the assets in the fund portfolio are doing well, the fund price is more likely to increase.