MFS High Yield Municipal Trust
CMU was delisted on the 5th of June, 2026.
41 hedge funds and large institutions have $44.3M invested in MFS High Yield Municipal Trust in 2025 Q4 according to their latest regulatory filings, with 5 funds opening new positions, 14 increasing their positions, 11 reducing their positions, and 3 closing their positions.
67% more first-time investments, than exits
New positions opened: 5 | Existing positions closed: 3
27% more repeat investments, than reductions
Existing positions increased: 14 | Existing positions reduced: 11
5% more funds holding
Funds holding: 39 → 41 (+2)
1.53% more ownership
Funds ownership: 47.96% → 49.49% (+1.5%)
4% more capital invested
Capital invested by funds: $42.4M → $44.3M (+$1.85M)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BI
Bulldog Investors
Saddle Brook,
New Jersey
|
+$2.09M |
| 2 |
Morgan Stanley
New York
|
+$1.03M |
| 3 |
Bank of America
Charlotte,
North Carolina
|
+$903K |
| 4 |
RCM
Rivernorth Capital Management
West Palm Beach,
Florida
|
+$181K |
| 5 |
COLIM
City of London Investment Management
London,
United Kingdom
|
+$175K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SIA
Sit Investment Associates
Minneapolis,
Minnesota
|
-$3.49M |
| 2 |
PAG
Private Advisor Group
Morristown,
New Jersey
|
-$66.3K |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$37.6K |
| 4 |
UBS Group
Zurich,
Switzerland
|
-$36.8K |
| 5 |
Nomura Holdings
Tokyo,
Japan
|
-$34.7K |
CMU Hedge Fund Activity: Q4 2025 in Review
41 of the 8,225 institutional investors tracked by Wall St. Rank reported a position in MFS High Yield Municipal Trust (CMU) for Q4 2025, worth a combined $44.3M — up 4.4% from $42.4M a quarter earlier.
Buyers outnumbered sellers: 5 funds opened new CMU positions and 3 closed out — a net gain of 2 holders — while 14 added to existing stakes and 11 trimmed.
The largest buyer was Bulldog Investors, adding an estimated $2.09M. The largest seller was Sit Investment Associates, cutting an estimated $3.49M.
- 41 institutional investors held MFS High Yield Municipal Trust (CMU) as of Q4 2025, up from 39 in Q3 2025.
- Funds reported $44.3M of MFS High Yield Municipal Trust stock for Q4 2025, up 4.4% quarter-over-quarter.
- 5 funds opened new MFS High Yield Municipal Trust positions in Q4 2025 and 3 closed out, a net change of +2 holders.
- The largest MFS High Yield Municipal Trust buyer in Q4 2025 was Bulldog Investors, an estimated $2.09M added.
- The largest MFS High Yield Municipal Trust seller in Q4 2025 was Sit Investment Associates, an estimated $3.49M sold.
Based on aggregated 13F filings for Q4 2025.