| http://www.w3.org/ns/prov#value | - For these funds, NAV is primarily affected by interest rates, which means if you buy shares when interest rates are historically low, you will probably end up selling shares for less than you paid for them and increased yields will not compensate for loss to NAV. For funds with heavy low risk mortgage bonds (e.g., Lehman aggregate), there is the added refinancing risk, because people refinance w
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