# MFS HIGH YIELD MUN TR SH BEN INT

MFS HIGH YIELD MUN TR SH BEN INT is a security (CUSIP 59318E102) tracked across SEC portfolio filings. 28 institutional managers reported $40.0M on Form 13F as of 2026-03-31; 8 registered fund positions totaling $13.8M via N-PORT as of 2026-03-31.

## Summary

- Issuer: MFS HIGH YIELD MUN TR
- Class: SH BEN INT
- CUSIP: 59318E102
- Asset category: EC
- 13F holders: 28
- 13F value: $40.0M
- 13F period: 2026-03-31
- N-PORT fund positions: 8
- N-PORT value: $13.8M
- N-PORT report: 2026-03-31

## Top institutional holders (Form 13F)

_Showing 15 of 28 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Bulldog Investors, LLP](https://search.stillhousedata.com/firm/151585) | SADDLE BROOK, NJ | $12.6M | 3,531,732 |
| [RIVERNORTH CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/122020) | WEST PALM BEACH, FL | $10.6M | 2,955,950 |
| [Almitas Capital LLC](https://search.stillhousedata.com/firm/166705) | SANTA MONICA, CA | $5.4M | 1,497,718 |
| [ICON ADVISERS INC/CO](https://search.stillhousedata.com/firm/108268) | GREENWOOD VILLAGE, CO | $2.6M | 731,734 |
| MORGAN STANLEY | NEW YORK, NY | $2.5M | 710,702 |
| BANK OF AMERICA CORP /DE/ | CHARLOTTE, NC | $1.5M | 405,971 |
| Allspring Global Investments Holdings, LLC | CHARLOTTE, NC | $1.4M | 377,111 |
| GUGGENHEIM CAPITAL LLC | Chicago, IL | $1.1M | 315,595 |
| UBS Group AG | Zurich, V8 | $464K | 129,606 |
| [Matisse Capital](https://search.stillhousedata.com/firm/155424) | LAKE OSWEGO, OR | $353K | 98,712 |
| EVOLVE PRIVATE WEALTH, LLC | LOS ANGELES, CA | $327K | 91,331 |
| OSAIC HOLDINGS, INC. | PHOENIX, AZ | $165K | 46,113 |
| RAYMOND JAMES FINANCIAL INC | ST. PETERSBURG, FL | $157K | 43,988 |
| Equitable Holdings, Inc. | NEW YORK, NY | $117K | 33,335 |
| Pathstone Holdings, LLC | ENGLEWOOD, NJ | $111K | 30,929 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| Special Opportunities Fund, Inc. | Special Opportunities Fund, Inc. | $5.5M | 325.60% |
| Total Return Securities Fund | Total Return Securities Fund | $5.4M | 587.98% |
| [The Intermediate Term Municipal Bond Portfolio](https://search.stillhousedata.com/fund/S000009376) | HC Capital Trust | $2.4M | 42.98% |
| RiverNorth Flexible Municipal Income Fund II Inc. | RiverNorth Flexible Municipal Income Fund II Inc. | $134K | 3.88% |
| RiverNorth Opportunistic Municipal Income Fund Inc. | RiverNorth Opportunistic Municipal Income Fund Inc. | $123K | 12.35% |
| RiverNorth Managed Duration Muni Income Fund Inc. | RiverNorth Managed Duration Municipal Income Fund Inc. | $115K | 3.93% |
| RiverNorth Managed Duration Municipal Income Fund II Inc. | RiverNorth Managed Duration Municipal Income Fund II Inc. | $52K | 3.95% |
| RiverNorth Flexible Municipal Income Fund Inc. | RiverNorth Flexible Municipal Income Fund Inc. | $37K | 3.91% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/59318E102.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.