MFS High Yield Municipal Trust
CMU was delisted on the 5th of June, 2026.
45 hedge funds and large institutions have $45.5M invested in MFS High Yield Municipal Trust in 2026 Q1 according to their latest regulatory filings, with 8 funds opening new positions, 12 increasing their positions, 10 reducing their positions, and 4 closing their positions.
100% more first-time investments, than exits
New positions opened: 8 | Existing positions closed: 4
20% more repeat investments, than reductions
Existing positions increased: 12 | Existing positions reduced: 10
10% more funds holding
Funds holding: 41 → 45 (+4)
3% more capital invested
Capital invested by funds: $44.3M → $45.5M (+$1.22M)
0.36% more ownership
Funds ownership: 49.49% → 49.85% (+0.36%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RCM
Rivernorth Capital Management
West Palm Beach,
Florida
|
+$1.16M |
| 2 |
Morgan Stanley
New York
|
+$1.14M |
| 3 |
GC
Guggenheim Capital
Chicago,
Illinois
|
+$1.13M |
| 4 |
COLIM
City of London Investment Management
London,
United Kingdom
|
+$385K |
| 5 |
Bank of New York Mellon
New York
|
+$128K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
TJHA
Thomas J. Herzfeld Advisors
Miami Beach,
Florida
|
-$1.96M |
| 2 |
MC
Matisse Capital
Portland,
Oregon
|
-$583K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$390K |
| 4 |
IA
Icon Advisers
Greenwood Village,
Colorado
|
-$320K |
| 5 |
BI
Bulldog Investors
Saddle Brook,
New Jersey
|
-$221K |
CMU Hedge Fund Activity: Q1 2026 in Review
45 of the 8,130 institutional investors tracked by Wall St. Rank reported a position in MFS High Yield Municipal Trust (CMU) for Q1 2026, worth a combined $45.5M — up 2.8% from $44.3M a quarter earlier.
Buyers outnumbered sellers: 8 funds opened new CMU positions and 4 closed out — a net gain of 4 holders — while 12 added to existing stakes and 10 trimmed.
The largest buyer was Rivernorth Capital Management, adding an estimated $1.16M. The largest seller was Thomas J. Herzfeld Advisors, exiting entirely with an estimated $1.96M sold.
- 45 institutional investors held MFS High Yield Municipal Trust (CMU) as of Q1 2026, up from 41 in Q4 2025.
- Funds reported $45.5M of MFS High Yield Municipal Trust stock for Q1 2026, up 2.8% quarter-over-quarter.
- 8 funds opened new MFS High Yield Municipal Trust positions in Q1 2026 and 4 closed out, a net change of +4 holders.
- The largest MFS High Yield Municipal Trust buyer in Q1 2026 was Rivernorth Capital Management, an estimated $1.16M added.
- The largest MFS High Yield Municipal Trust seller in Q1 2026 was Thomas J. Herzfeld Advisors, an estimated $1.96M sold.
Based on aggregated 13F filings for Q1 2026.