MFS High Yield Municipal Trust
CMU • XNYS
MFS High Yield Municipal Trust is a publicly traded company on XNYS. As of Q3 2025, 34 institutional investors hold shares in this company, with total holdings valued at $38.6M. Bulldog Investors, LLC is the largest holder with a position valued at $10.4M.
Overview
Overview of institutional ownership in CMU as of Q3 2025
All Institutions
- Institutions
- 34
- Value Held
- $38.6M
- Shares Held
- 11.1M
- Avg Position
- $1.1M
- Median Position
- $145.6K
Hedge Funds
- Hedge Funds
- 3
- Value Held
- $19.4M
- Shares Held
- 5.6M
- Avg Position
- $6.5M
- Median Position
- $8.9M
Biggest Investors
Institutions with the largest positions in CMU as of Q3 2025
| Institution | Position Value |
|---|---|
 Bulldog Investors, LLC Hedge Fund•Activist | $10.4M 2.54% of portfolio |
 RIVERNORTH CAPITAL MANAGEMENT, LLC Hedge Fund•Multi-Strategy | $8.9M 0.54% of portfolio |
 Almitas Capital LLC RIA/Wealth | $5.2M 1.20% of portfolio |
 ICON ADVISERS INC/CO Long Only Manager | $2.9M 0.64% of portfolio |
 Thomas J. Herzfeld Advisors, Inc. Long Only Manager | $1.9M 0.65% of portfolio |
 CITY OF LONDON INVESTMENT MANAGEMENT CO LTD Long Only Manager | $1.8M 0.13% of portfolio |
 Allspring Global Investments Holdings, LLC Long Only Manager | $1.3M 0.00% of portfolio |
 Bank of New York Mellon Corp Institution | $1.1M 0.00% of portfolio |
 Deschutes Portfolio Strategy, LLC RIA/Wealth | $909.9K 0.41% of portfolio |
 UBS Group AG Institution | $865.3K 0.00% of portfolio |
Net Capital Flow
Institutional buying and selling activity for CMU in Q3 2025
- Traded
- +$5.5M
- Buyers
- 19
- Sellers
- 8
- Total Bought
- +$7.1M
- Total Sold
- −$1.6M
- Avg Position
- $1.0M
Biggest Buyers
| Institution | Net Bought |
|---|---|
Almitas Capital LLC RIA/Wealth | +$3.0M +855.5K shares |
RIVERNORTH CAPITAL MANAGEMENT, LLC Hedge Fund•Multi-Strategy | +$2.0M +580.4K shares |
Bulldog Investors, LLC Hedge Fund•Activist | +$1.1M +323.9K shares |
CITY OF LONDON INVESTMENT MANAGEMENT CO LTD Long Only Manager | +$190.8K +55.0K shares |
 BANK OF AMERICA CORP /DE/ Institution | +$182.9K +52.7K shares |
Bank of New York Mellon Corp Institution | +$86.7K +25.0K shares |
A Advisor Group Holdings, Inc. Institution | +$81.4K +24.0K shares |
L LPL Financial LLC Institution | +$75.3K +21.7K shares |
Allspring Global Investments Holdings, LLC Long Only Manager | +$72.6K +20.9K shares |
 Rockefeller Capital Management L.P. Long Only Manager | +$69.4K +20.0K shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
 Hennion & Walsh Asset Management, Inc. RIA/Wealth | −$1.3M −398.6K shares |
N Novak & Powell Financial Services, Inc. RIA/Wealth | −$98.2K −29.5K shares |
UBS Group AG Institution | −$91.0K −26.2K shares |
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | −$74.7K −22.4K shares |
Thomas J. Herzfeld Advisors, Inc. Long Only Manager | −$14.2K −4.1K shares |
 MORGAN STANLEY RIA/Wealth | −$6.9K −2.0K shares |
 WELLS FARGO & COMPANY/MN Institution | −$1.4K −401.0 shares |
 Kestra Advisory Services, LLC RIA/Wealth | −$853.6 −246.0 shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited CMU in Q3 2025
- New Positions
- 3
- New Value
- $125.8K
- Exited Positions
- 4
- Exited Value
- $1.5M
New Positions
| Institution | Position Value |
|---|---|
Rockefeller Capital Management L.P. Long Only Manager | $69.4K 20.0K shares |
S SPIREPOINT PRIVATE CLIENT, LLC RIA/Wealth | $56.4K 16.2K shares |
 CX Institutional RIA/Wealth | - - shares |
Exited Positions
| Institution | Previous Position |
|---|---|
Hennion & Walsh Asset Management, Inc. RIA/Wealth | $1.3M 398.6K shares |
N Novak & Powell Financial Services, Inc. RIA/Wealth | $98.2K 29.5K shares |
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $74.7K 22.4K shares |
CX Institutional RIA/Wealth | - 14.0K shares |
Options Activity
Institutions with the largest Call and Put options positions in CMU as of Q3 2025
- Call Positions
- 0
- Call Value
- -
- Put Positions
- 0
- Put Value
- -
Call Positions
| Institution | Position Value |
|---|---|
| No call positions found | |
Put Positions
| Institution | Position Value |
|---|---|
| No put positions found | |
Most Committed Institutions
Institutions with CMU as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
Bulldog Investors, LLC Hedge Fund•Activist | 2.54% $10.4M |
Almitas Capital LLC RIA/Wealth | 1.20% $5.2M |
Thomas J. Herzfeld Advisors, Inc. Long Only Manager | 0.65% $1.9M |
ICON ADVISERS INC/CO Long Only Manager | 0.64% $2.9M |
RIVERNORTH CAPITAL MANAGEMENT, LLC Hedge Fund•Multi-Strategy | 0.54% $8.9M |
Deschutes Portfolio Strategy, LLC RIA/Wealth | 0.41% $909.9K |
 MELFA WEALTH MANAGEMENT, LLC RIA/Wealth | 0.25% $430.3K |
CITY OF LONDON INVESTMENT MANAGEMENT CO LTD Long Only Manager | 0.13% $1.8M |
 BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC RIA/Wealth | 0.01% $76.1K |
S SPIREPOINT PRIVATE CLIENT, LLC RIA/Wealth | 0.01% $56.4K |
Hedge Fund Spotlight
Discover hedge funds investing in CMU
CITADEL ADVISORS LLC
Hedge Fund • Multi-Strategy
Portfolio ManagerKenneth Cordele Griffin
- Portfolio Value
- $122.08B
- Positions
- 5,531
- Last Reported
- Q3 2025
Sector Allocation
Position in MFS High Yield Municipal Trust
- Market Value
- $101.2K
- Shares Held
- 29.2K
- Portfolio Weight
- 0.00%
- Owned Since
- 2025-Q2
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Software - Infrastructure Technology | $2.1B | 1.68% | |
Semiconductors Technology | $1.8B | 1.50% | |
Internet Content & Information Communication Services | $1.4B | 1.18% |
