CMU Stock Summary and Trading Ideas (MFS High Yield Muni Trust | NYSE:CMU)

The fund’s investment objective is to seek high current income exempt from federal income tax, but may also consider capital appreciation. The fund invests, under normal market conditions, at least 80% of its net assets, including assets attributable to preferred shares and borrowings for investment purposes, in tax-exempt bonds and tax-exempt notes.

MFS High Yield Muni Trust trades on the NYSE stock market under the symbol CMU.

As of April 17, 2026, CMU stock price was flat at $3.67 with 77,696 million shares trading.

CMU has a beta of 0.06, meaning it tends to be less sensitive to market movements. CMU has a correlation of 0.01 to the broad based SPY ETF.

CMU has a market cap of $93.56 million. This is considered a Micro Cap stock.

In the last 3 years, CMU traded as high as $3.71 and as low as $2.78.

CMU has underperformed the market in the last year with a price return of +17.5% while the SPY ETF gained +36.3%. However, in the short term, CMU had mixed performance relative to the market. It has outperformed in the last 3 months, returning +6.0% vs +2.9% return in SPY. But in the last 2 weeks, CMU shares have been beat by the market, returning +3.3% compared to an SPY return of +8.3%.

CMU support price is $3.64 and resistance is $3.71 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that CMU shares will trade within this expected range on the day.