Latest Period
Q2 2026
Security Snapshot
MFS HIGH YIELD MUNICIPAL TRUST - Common Stock (CMU) Institutional Ownership
CUSIP: 59318E102
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
0
Shares (Excl. Options)
0
Price
$3.36
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- Security type / class
- Equity / Common Stock
- Symbol
- CMU
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 0
- Total 13F value
- $0
- Share change
- -12,707,626
- Value change
- -$45,491,444
- Number of holders
- 0
- Shares outstanding
- 25,385,051
- SEC-reported price per share
- $3.36
- Insider filing price
- $3.36
Latest holder snapshot
4 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- CMU - MFS HIGH YIELD MUNICIPAL TRUST - Common Stock is tracked under CUSIP 59318E102.
- 0 institutions reported positions in Q2 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 45 to 0 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $45,491,444 to $0.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 0 institutions filings for Q2 2026.
Security key
59318E102
Latest holder period
Q2 2026
13F holders
0
13D/G owners
4
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 59318E102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
CMU
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 12% | +15% | $10,759,658 | +$1,371,825 | 2,955,950 | +15% | RIVERNORTH CAPITAL MANAGEMENT, LLC | 31 Mar 2026 |
| CITY OF LONDON INVESTMENT MANAGEMENT CO LTD | 4.8% | $4,109,866 | 1,234,194 | City of London Investment Management Company Limited | 31 Mar 2025 | |||
| SIT INVESTMENT ASSOCIATES INC | 4.1% | -48% | $3,616,876 | -$3,312,255 | 1,045,340 | -48% | Sit Investment Associates, Inc. | 30 Sep 2025 |
| Bulldog Investors, LLP | 1% | -84% | $484,812 | -$5,940,986 | 133,190 | -92% | Phillip Goldstein | 06 May 2026 |
As of 30 Jun 2026, 0 institutional investors reported holding 0 shares of MFS HIGH YIELD MUNICIPAL TRUST - Common Stock (CMU). This represents 0% of the company’s total 25,385,051 outstanding shares.
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 0 | $0 | -$45,491,444 | $3.36 | 0 |
| 2026 Q1 | 12,707,626 | $45,491,444 | +$375,908 | $3.58 | 45 |
| 2025 Q4 | 12,615,228 | $44,273,288 | +$1,000,065 | $3.51 | 41 |
| 2025 Q3 | 12,226,392 | $42,418,919 | +$946,743 | $3.47 | 39 |
| 2025 Q2 | 11,973,151 | $39,870,326 | -$476,442 | $3.33 | 38 |
| 2025 Q1 | 12,135,668 | $42,354,332 | +$3,547,407 | $3.49 | 39 |
| 2024 Q4 | 11,118,467 | $39,161,361 | +$6,515,836 | $3.52 | 42 |
| 2024 Q3 | 9,221,748 | $33,794,734 | +$971,393 | $3.66 | 47 |
| 2024 Q2 | 8,983,657 | $30,806,871 | +$677,396 | $3.43 | 52 |
| 2024 Q1 | 8,783,335 | $29,219,055 | -$911,873 | $3.33 | 51 |
| 2023 Q4 | 9,045,712 | $29,941,604 | -$4,180,662 | $3.31 | 50 |
| 2023 Q3 | 10,689,692 | $33,474,788 | +$3,919,146 | $3.13 | 49 |
| 2023 Q2 | 9,431,187 | $30,368,124 | +$4,020,007 | $3.22 | 48 |
| 2023 Q1 | 8,169,887 | $26,220,750 | +$3,115,302 | $3.21 | 46 |
| 2022 Q4 | 7,222,325 | $22,606,284 | +$4,457,101 | $3.13 | 46 |
| 2022 Q3 | 5,777,406 | $17,383,146 | +$1,626,972 | $3.01 | 42 |
| 2022 Q2 | 5,226,511 | $17,581,000 | +$2,703,671 | $3.36 | 44 |
| 2022 Q1 | 4,402,586 | $17,035,000 | +$3,934,341 | $3.87 | 38 |
| 2021 Q4 | 3,383,802 | $15,285,000 | +$2,224,381 | $4.52 | 36 |
| 2021 Q3 | 2,848,595 | $13,074,000 | +$3,286,914 | $4.59 | 34 |
| 2021 Q2 | 2,131,877 | $10,117,000 | -$2,086,090 | $4.75 | 29 |
| 2021 Q1 | 2,596,077 | $11,589,000 | +$1,254,885 | $4.46 | 33 |
| 2020 Q4 | 2,294,011 | $10,083,000 | +$1,923,319 | $4.40 | 33 |
| 2020 Q3 | 1,855,611 | $7,793,000 | -$598,639 | $4.20 | 29 |
| 2020 Q2 | 2,004,788 | $8,166,000 | +$459,050 | $4.07 | 28 |