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| 1 year | 3 year | 5 year | 10 year | Since inception |
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| Municipal Bond Fund |
7.04% | 7.46% | 7.17% | 6.34% | 5.81% |
| 1.80% | 2.54% | 3.40% | 3.38% | 4.04% |
Figures quoted represent past performance, which is no guarantee of future results. Investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance data quoted and assumes the reinvestment of dividends and capital gains. Current month-end performance is available here. Investor Class shares are sold without a front-end sales charge or contingent deferred sales charge.
Gross expense ratio is 0.83% for the Municipal Bond Fund and 0.81% for the Short-Term Municipal Bond Fund.
Bond fund values fluctuate in response to the financial condition of individual issuers, general market and economic conditions, and changes in interest rates. In general, when interest rates rise, bond fund values fall and investors may lose principal value. The use of derivatives may reduce returns and/or increase volatility. Certain investment strategies tend to increase the total risk of an investment (relative to the broader market). The funds are exposed to high-yield securities risk, and municipal securities risk. Consult the fund's prospectus for additional information on these and other risks. A portion of the fund's income may be subject to federal, state, and/or local income taxes or the alternative minimum tax (AMT). Any capital gains distributions may be taxable.