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MFS High Yield Municipal Trust (CMU)

$3.36 $-0.01 (-0.15%) |CouncilHOLD · 50 · B
Bottom line: HOLD — our Council read (50/100) and AI Score (52/100) broadly agree. Strongest signal: Ray Dalio bullish · Biggest watch-out: Ken Griffin bearish.
MCap: $85.66M| Vol: 51.0K|
Data from FMP · Methodology

For informational purposes only. Not financial advice. Analysis by Sedat ANAK, Founder & Editor-in-Chief | AI-powered analysis. Data sourced from SEC filings and institutional-grade financial providers. Editorially reviewed. Not financial advice.

MFS High Yield Municipal Trust (CMU) trades at $3.36 with AI Score 52/100 (Grade B). MFS High Yield Municipal Trust (CMU) is a closed-end fixed income mutual fund managed by Massachusetts Financial Services Company. Market cap: $85.66M, Sector: Financial services.

Price live · AI analysis from Jun 15, 2026
MFS High Yield Municipal Trust (CMU) is a closed-end fixed income mutual fund managed by Massachusetts Financial Services Company. It primarily invests in tax-exempt bonds and notes within the United States fixed income markets, aiming to provide high current income.

Analyst Coverage for CMU: CMU does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage. In the absence of analyst consensus, our AI model evaluates CMU against Financial Services peers across nine fundamental dimensions and assigns a mixed fundamental profile based on the underlying data.

Council Score · Weighted Average of 3 Disciplines
HOLD 50/100 · B

CMU: the 7 perspectives are evenly split. Dominant signal: Ken Griffin bearish.

How is this calculated? →
Legends Council · 5 Legends + Moon AI
Ray Dalio
Bullish
Ken Griffin
Bearish
Jim Simons
Neutral
Izzy Englander
Neutral
Seth Klarman
Neutral
Moon AI
Neutral
Council Score · 8 perspectives · See tabs for details →

MFS High Yield Municipal Trust (CMU) Financial Services Profile

CEORobin Ann Stelmach
HeadquartersBoston, US
IPO Year1987

MFS High Yield Municipal Trust (CMU) operates as a closed-end fixed income mutual fund, managed by Massachusetts Financial Services Company, specializing in tax-exempt bonds and notes within the U.S. fixed income markets. Established in 1987, the fund focuses on generating high current income primarily exempt from federal income tax, benchmarking its performance against the Barclays Municipal Bond Index.

Data Provenance | Financial Data Quantitative Analysis NASDAQ Analysis: Jun 15, 2026

What Is the Investment Thesis for CMU?

MFS High Yield Municipal Trust (CMU) presents an investment profile characterized by its focus on tax-exempt income and a robust dividend yield. With a market capitalization of $85.66M and a substantial dividend yield of 7.97%, the fund appeals to income-focused investors prioritizing tax efficiency. Its long operational history since March 19, 1987, under the management of Massachusetts Financial Services Company, suggests an established expertise in navigating the municipal bond market. The fund's gross margin of 84.9% indicates strong operational efficiency in managing its investment portfolio. However, a profit margin of -0.3% suggests that after all expenses, the fund is currently operating at a slight loss, which warrants close monitoring of its expense ratio and income generation capabilities. A beta of 0.68 signifies lower volatility compared to the broader market, potentially offering a more stable investment for risk-averse investors. Key growth catalysts include sustained demand for tax-advantaged income, the fund manager's ability to capitalize on market inefficiencies in the municipal bond sector, and the potential for stable distributions to attract and retain shareholders. Risks include interest rate sensitivity inherent in fixed income, credit risk of municipal issuers, and the potential for the fund's shares to trade at a discount to its net asset value.

Based on FMP financials and quantitative analysis

CMU Key Highlights

  • Market capitalization stands at $0.09 billion, reflecting its scale within the closed-end fund market.
  • The fund offers a significant dividend yield of 7.97%, appealing to income-oriented investors.
  • Achieved a gross margin of 84.9%, indicating strong efficiency in its core investment operations.
  • Reported a profit margin of -0.3%, suggesting operational costs or specific fund characteristics are currently impacting net profitability.
  • Exhibits a beta of 0.68, indicating lower volatility relative to the overall market, which can be attractive for risk-averse portfolios.
  • Founded on March 19, 1987, demonstrating over three decades of operational history in the fixed income sector.

Who Are CMU's Competitors?

CMU is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.

Company Price Change Market Cap AI Score
NXDT NexPoint Diversified Real Estate Trust $5.53 +3.08% $285.77M 73
GENB Generate Biomedicines, Inc. $17.03 -2.18% $2.18B 72
SII Sprott Inc. $118.11 +2.72% $3.05B 71
TPZ Tortoise Electrification Infrastructure ETF $21.82 +0.74% $128.52M 70
STEX Streamex Corp. (STEX) is focused on real-world asset tokenization, particularly integrating the gold and commodities market into blockchain technology. The company $1.09 +12.29% $43.15M 62
DIAX Nuveen Dow 30 Dynamic Overwrite Fund $14.10 -0.91% $512.77M 62
MERFX The Merger Fund - Class A $17.50 -0.06% $2.50B 62
PCM PCM Fund Inc. $5.76 +0.00% $71.13M 62

AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance

What Are CMU's Key Strengths?

  • Long operational history since March 19, 1987, demonstrating market endurance.
  • Specialized focus on tax-exempt municipal bonds and notes, catering to a niche market.
  • Managed by Massachusetts Financial Services Company, a reputable asset management firm.
  • High gross margin of 84.9% indicates efficient investment operations.
  • Attractive dividend yield of 7.97% for income-focused investors.
  • Lower beta of 0.68 suggests reduced volatility compared to the broader market.

What Are CMU's Weaknesses?

  • Negative profit margin of -0.3% indicates current operational challenges or high expenses relative to income.
  • Reliance on the municipal bond market, making it susceptible to sector-specific risks.
  • Closed-end fund structure can lead to shares trading at a discount or premium to Net Asset Value (NAV).
  • Limited geographic diversification, with investments solely focused on the United States fixed income markets.

What Could Drive CMU Stock Higher?

  • Potential shifts in the interest rate environment that could favor fixed income investments, enhancing bond valuations and income generation for the fund.
  • Active management strategies employed by Massachusetts Financial Services Company to identify and capitalize on undervalued tax-exempt municipal bonds, optimizing portfolio performance.
  • Consistent dividend distributions, currently at a 7.97% yield, continuing to attract and retain income-focused investors seeking tax-advantaged returns.
  • Increased demand for tax-exempt income solutions from high-net-worth individuals and institutional investors, driving inflows into municipal bond funds.

What Are the Key Risks for CMU?

  • Financial-distress signal — its Altman Z-Score of 1.22 sits in the distress zone (elevated bankruptcy risk).
  • Interest rate fluctuations pose a continuous risk, as rising rates can lead to a decrease in the market value of the fund's existing bond holdings and its Net Asset Value (NAV).
  • Credit risk is inherent in municipal bond investing, with the potential for default or credit rating downgrades of municipal issuers, which could impact the fund's principal and income.
  • Changes in federal or state tax laws could diminish the tax-exempt status or overall attractiveness of municipal bond income, reducing investor demand for the fund.
  • The closed-end fund structure means CMU's shares can trade at a discount or premium to its NAV, influenced by market sentiment and supply/demand dynamics, rather than solely by underlying asset value.

What Are the Growth Opportunities for CMU?

  • **Demand for Tax-Exempt Income:** The ongoing demand for tax-exempt income, particularly among high-net-worth individuals and institutional investors, represents a significant growth driver for MFS High Yield Municipal Trust. As tax rates remain a consideration for investors, the appeal of municipal bonds, which offer income free from federal income tax and potentially state and local taxes, is sustained. This consistent demand underpins the market for the fund's underlying assets, supporting its ability to attract and retain capital. The stability of the municipal bond market, often characterized by lower default rates compared to corporate bonds, further enhances its attractiveness as a long-term income-generating vehicle.
  • **Active Management Expertise:** The fund's management by Massachusetts Financial Services Company provides a critical advantage through active management expertise. In the municipal bond market, which can be less liquid and more complex than other fixed income sectors, skilled active management can identify undervalued securities, manage credit risk effectively, and capitalize on market inefficiencies. This capability allows the fund to potentially outperform passive indices and generate enhanced risk-adjusted returns for shareholders. The firm's research capabilities and trading infrastructure are vital in navigating the diverse landscape of municipal issuers and bond structures.
  • **Stable Income Generation:** MFS High Yield Municipal Trust's focus on high-yield municipal bonds is designed to offer a potentially attractive and stable income stream to its investors. The closed-end fund structure, combined with its investment mandate, allows for consistent distributions, which are highly valued by income-focused investors. This stability in distributions can be a compelling factor, particularly in environments where traditional income sources yield less. The fund's ability to maintain a high dividend yield, currently 7.97%, serves as a strong draw for those seeking regular cash flow from their investments.
  • **Diversification Benefits:** Municipal bonds, and by extension, funds like CMU, offer significant diversification benefits within a broader investment portfolio. Their performance often exhibits a lower correlation to equities and other asset classes, providing a potential hedge against market volatility. For institutional investors and financial advisors constructing diversified portfolios, an allocation to municipal bonds can help reduce overall portfolio risk while contributing to income generation. This characteristic makes CMU a valuable component for investors looking to balance risk and return across different market cycles.
  • **Market Volatility & Opportunity:** Periods of market volatility, while potentially challenging, can create substantial opportunities for experienced managers in the municipal bond sector. During such times, certain municipal bonds may become temporarily undervalued due to broader market sentiment or liquidity issues, rather than fundamental credit deterioration. MFS High Yield Municipal Trust, through its active management, can strategically acquire these attractive municipal bonds at favorable prices. This opportunistic buying can enhance the fund's future yield potential and capital appreciation, ultimately benefiting shareholders over the long term as market conditions normalize.

What Opportunities Does CMU Have?

  • Increasing demand for tax-efficient income solutions among investors.
  • Potential for active management to capitalize on market inefficiencies within the municipal bond sector.
  • Market dislocations creating opportunities to acquire attractive municipal bonds at favorable valuations.
  • Expansion of investor base seeking lower-volatility income-generating assets.

What Threats Does CMU Face?

  • Rising interest rates could negatively impact the valuation of existing bond holdings and the fund's NAV.
  • Credit risk associated with municipal bond issuers, including potential for defaults or downgrades.
  • Changes in federal or state tax laws that could diminish the tax-exempt status or appeal of municipal bonds.
  • Intense competition from other municipal bond funds, ETFs, and income-generating investment products.

What Are CMU's Competitive Advantages?

  • Long operational history since 1987, providing extensive experience in the municipal bond market.
  • Managed by Massachusetts Financial Services Company, a reputable and established asset management firm.
  • Specialization in high-yield tax-exempt municipal bonds, catering to a specific investor demand for tax-efficient income.
  • Access to the research, analytical tools, and trading capabilities of a large institutional asset manager.
  • Established distribution network and brand recognition within the closed-end fund and municipal bond sectors.

What Does CMU Do?

MFS High Yield Municipal Trust, known by its ticker CMU, is a prominent closed-end fixed income mutual fund with a long-standing history in the United States financial landscape. The fund was initially established on March 19, 1987, under the name Colonial Municipal Income Trust, before evolving into its current identity. It is expertly launched and managed by Massachusetts Financial Services Company, a well-regarded entity within the asset management industry. CMU's core investment strategy is centered on the fixed income markets of the United States, with a specific and deliberate focus on tax-exempt bonds and tax-exempt notes. This specialization caters to investors seeking income streams that are generally free from federal income tax, and in some cases, state and local taxes, depending on the issuer and the investor's residency. The fund's objective is to provide shareholders with a high level of current income, derived from its diversified portfolio of municipal securities. To gauge its performance and provide a clear benchmark for investors, MFS High Yield Municipal Trust measures its portfolio's returns against the widely recognized Barclays Municipal Bond Index. As a closed-end fund, CMU issues a fixed number of shares that trade on a stock exchange, distinguishing it from open-end mutual funds where shares are continuously issued and redeemed. This structure means its market price can fluctuate based on supply and demand, potentially trading at a premium or discount to its net asset value (NAV). Domiciled in the United States, CMU leverages the extensive research and management capabilities of Massachusetts Financial Services Company to navigate the complexities of the municipal bond market, aiming to identify attractive investment opportunities while managing credit and interest rate risks inherent in fixed income investing.

What Products and Services Does CMU Offer?

  • Manages a closed-end fixed income mutual fund, MFS High Yield Municipal Trust (CMU).
  • Invests primarily in tax-exempt bonds issued by state and local governments and their agencies.
  • Allocates capital to tax-exempt notes within the United States fixed income markets.
  • Aims to provide a high level of current income to its shareholders.
  • Benchmarks its investment performance against the Barclays Municipal Bond Index.
  • Operates under the professional management of Massachusetts Financial Services Company.
  • Focuses on securities whose interest income is primarily exempt from federal income tax.
  • Offers a vehicle for investors to gain exposure to the municipal bond market.

How Does CMU Make Money?

  • Generates revenue through management fees charged on the assets under management within the fund.
  • Derives income from the interest payments received on its portfolio of tax-exempt municipal bonds and notes.
  • Seeks to provide regular distributions to shareholders, primarily sourced from the tax-exempt income generated by its investments.
  • Manages its portfolio actively to optimize returns and manage risk within its investment mandate.

What Industry Does CMU Operate In?

MFS High Yield Municipal Trust operates within the highly specialized and competitive asset management industry, specifically targeting the closed-end fund segment focused on municipal bonds. This niche is characterized by investors seeking tax-exempt income, often from high-net-worth individuals or institutions. The broader asset management industry is influenced by interest rate environments, regulatory changes, and investor demand for various asset classes. Within this context, CMU's focus on high-yield municipal bonds positions it to cater to a specific risk-return profile, distinct from general investment-grade municipal bond funds. Market trends include fluctuating interest rates, which directly impact bond valuations, and the ongoing demand for tax-efficient investment vehicles, particularly in periods of higher tax rates. The competitive landscape includes a range of other closed-end and open-end municipal bond funds offered by various asset managers, as well as exchange-traded funds (ETFs) that track municipal bond indices. CMU differentiates itself through its active management by Massachusetts Financial Services Company and its specific mandate for high-yield municipal securities, benchmarking against the Barclays Municipal Bond Index.

Who Are CMU's Key Customers?

  • Individual investors seeking tax-advantaged income streams.
  • Institutional investors aiming for exposure to the municipal bond market.
  • Financial advisors and wealth managers incorporating fixed income into client portfolios.
AI Confidence: 68% Updated: Jun 15, 2026

F-Score 5/9Financial Health

MFS High Yield Municipal Trust's Piotroski F-Score is 5/9, a 9-point checklist of profitability, leverage and efficiency — a middling fundamental profile. Its Altman Z-Score of 1.22 places it in the distress zone, a signal of elevated financial risk.

ROE 2%Key Financial Metrics

Return on equity for MFS High Yield Municipal Trust stands at 2.3%, a gauge of how efficiently it converts shareholder capital into profit. Return on assets is 1.6%, showing how much profit it generates from its asset base. CMU trades at a trailing price-to-earnings ratio of 40.27, above the Financial Services sector average of ~18x. Its free cash flow yield is 4.8%, a gauge of the cash the business throws off relative to its market value. A current ratio of 0.02 means current liabilities exceed short-term assets, a liquidity point worth watching. Its earnings yield is 2.5%, the inverse of the P/E and a quick read on earnings relative to price.

MFS High Yield Municipal Trust (CMU) Valuation Context

Valued at $85.66M, CMU is classified as a micro-cap stock. Relative to its peer group, CMU's quantitative score of 52/100 is below the peer average of 70/100.

CMU Financials

Fundamental Snapshot

Revenue Growth (FY)
-25.0%
Net Income Growth (FY)
-100.1%
EPS Growth (FY)
-99.9%
Free Cash Flow Growth (FY)
+11.7%
P/E (TTM)
40.3
Return on Equity (TTM)
+2.3%
Current Ratio
0.0
EV/EBITDA (TTM)
34.0

Based on FMP financials and quantitative analysis · FY 2025

Bull Case vs Bear Case

Bull Case

  • CMU's focus on high-yield municipal bonds makes it attractive in a low-interest-rate environment, especially if rates stay lower for longer.
  • Recent insider buying activity suggests that those with the most knowledge of the company see value at current levels.
  • The community sentiment seems to be leaning towards a 'buy and hold' strategy, indicating a belief in long-term stability.
  • The fund provides consistent income, which is appealing to risk-averse investors seeking steady returns, similar to the appeal of dividend stocks during uncertain times.

Bear Case

  • Municipal bond funds can be sensitive to interest rate hikes, potentially leading to capital losses if rates rise unexpectedly.
  • Negative community sentiment surrounding potential defaults in the municipal bond sector could weigh on CMU's performance.
  • Market perception of increased credit risk in the municipal bond market could lead to wider credit spreads and lower bond prices.
  • The fund's high-yield focus means it invests in lower-rated bonds, increasing the risk of default, much like the subprime mortgage bonds that triggered the 2008 crisis.

AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · March 2026

CMU Latest News

No recent news available for CMU.

CMU Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations from Benzinga, Yahoo Finance, and Finnhub for CMU.

Price Targets

Wall Street price target analysis for CMU.

CMU MoonshotScore

52/100

What does this score mean?

The MoonshotScore rates CMU's growth potential on a scale of 0-100 across multiple factors including innovation, market disruption, financial health, and momentum.

Leadership: Robin Ann Stelmach

Unknown

Specific details regarding Robin Ann Stelmach's comprehensive career history, educational background, and previous roles prior to her leadership position at MFS High Yield Municipal Trust were not provided in the source data. However, her involvement with a fund managed by Massachusetts Financial Services Company suggests a background within the asset management industry, likely with experience in fixed income, portfolio management, or related financial services. Her role as a key leader for a fund established in 1987 implies a deep understanding of the investment landscape and the specific dynamics of the municipal bond market.

Track Record: Specific achievements, strategic decisions, or company milestones directly attributable to Robin Ann Stelmach's leadership at MFS High Yield Municipal Trust were not detailed in the provided source information. As a leader of a fund with a long operational history, her responsibilities would typically involve overseeing investment strategies, managing portfolio performance against the Barclays Municipal Bond Index, and ensuring the fund's adherence to its objective of providing high current income through tax-exempt securities. The fund's continued operation and dividend distributions reflect ongoing management.

MFS High Yield Municipal Trust Financial Services Stock: Key Questions Answered

What is the investment objective of MFS High Yield Municipal Trust?

MFS High Yield Municipal Trust (CMU) primarily aims to provide shareholders with a high level of current income, which is largely exempt from federal income tax. The fund achieves this objective by investing predominantly in tax-exempt bonds and tax-exempt notes within the United States fixed income markets. Managed by Massachusetts Financial Services Company, CMU focuses on municipal securities that offer a higher yield, accepting a degree of credit risk for the potential of enhanced income. Its performance is benchmarked against the Barclays Municipal Bond Index, providing a standard for evaluating its effectiveness in the specialized municipal bond sector.

How does MFS High Yield Municipal Trust generate income for its shareholders?

MFS High Yield Municipal Trust generates income primarily through the interest payments received from its portfolio of tax-exempt municipal bonds and notes. These securities are issued by state and local governments and their agencies to finance public projects, and the interest they pay is typically exempt from federal income tax, and sometimes state and local taxes for residents of the issuing state. The fund collects these interest payments and, after deducting its operational expenses, distributes the net income to its shareholders in the form of regular dividends. As a closed-end fund, it also earns management fees on its assets under management, but the primary source of shareholder income is the tax-exempt interest from its bond holdings.

What are the primary risks associated with investing in CMU?

Investing in MFS High Yield Municipal Trust (CMU) carries several key risks inherent to fixed income and closed-end funds. Interest rate risk is significant, as rising interest rates can cause the market value of the fund's bond holdings to decline, impacting its Net Asset Value (NAV). Credit risk is also present, as the fund invests in municipal bonds, and there's a possibility that issuers could default on their payments or have their credit ratings downgraded, leading to losses. Furthermore, as a closed-end fund, CMU's shares may trade at a discount or premium to its NAV, influenced by market supply and demand rather than solely by the value of its underlying assets. Changes in tax laws could also reduce the appeal of tax-exempt income, affecting demand for the fund.

What are the key factors to evaluate for CMU?

MFS High Yield Municipal Trust (CMU) holds an AI score of 52/100 (moderate). Not financial advice.

How frequently does CMU data refresh on this page?

CMU prices update in real time during U.S. market hours. Fundamentals refresh after quarterly filings; analyst ratings and AI insights update daily; news is aggregated continuously.

What has driven CMU's recent stock price performance?

MFS High Yield Municipal Trust (CMU) moves on earnings results, analyst revisions, sector rotation, and market sentiment. Notable catalyst: Long operational history since March 19, 1987, demonstrating market endurance. See the News tab for the latest drivers. Past performance does not predict future results.

Should investors consider CMU overvalued or undervalued right now?

Valuing MFS High Yield Municipal Trust (CMU) requires multiple metrics. Compare P/E, P/S, and EV/EBITDA against sector peers for a full view.

What research should beginners do before buying CMU?

Before investing in MFS High Yield Municipal Trust (CMU), research these four areas: (1) the company's revenue model and competitive position (see Company Overview), (2) financial health through revenue growth, margins, and cash flow (see MoonshotScore), (3) what Wall Street analysts recommend and their price targets (see Analyst tab), and (4) specific risk factors that could impact the stock (see Risk Factors section).

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Official Resources

Price as of Analysis updated AI Score refreshed daily
Data Sources & Methodology
Market data powered by Financial Modeling Prep & Yahoo Finance. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .
Data Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.

Analysis Notes
  • Information is based solely on provided source data.
  • Specific details on CEO's background and track record were not provided in the source data.
  • No FMP PEER TICKERS were provided in the source data for competitor analysis.
Data Sources

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