Looking at the universe of stocks we cover at Dividend Channel, on 12/16/14, MFS High Yield Municipal Fund ( CMU) will trade ex-dividend, for its monthly dividend of $0.024, payable on 12/31/14. As a percentage of CMU's recent stock price of $4.42, this dividend works out to approximately 0.54%, so look for shares of MFS High Yield Municipal Fund to trade 0.54% lower — all else being equal — when CMU shares open for trading on 12/16/14.
Below is a dividend history chart for CMU, showing historical dividends prior to the most recent $0.024 declared by MFS High Yield Municipal Fund:
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In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from CMU is likely to continue, and whether the current estimated yield of 6.52% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of CMU shares, versus its 200 day moving average: 
Looking at the chart above, CMU's low point in its 52 week range is $3.96 per share, with $4.71 as the 52 week high point — that compares with a last trade of $4.43. In Friday trading, MFS High Yield Municipal Fund shares are currently trading flat on the day. 
