CMU
MFS HIGH YIELD MUNICIPAL TRUSTMarquee-fund ownership over time
Current holders
Sorted by tenure (longest first)| Fund | First disclosed | Held | Entry price | Latest close | Return on entry |
|---|---|---|---|---|---|
| Citadel Advisors re-entered | Q3 2024(8Q snapshot) | 7Q | $0.00 | — | — |
“Return on entry” is the price-only move from the fund's first disclosure to today — it ignores any adds, trims, or dividends. A fund that built its position over multiple quarters has a true cost basis somewhere between entry price and latest close; this figure is the upper bound.
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at MFS HIGH YIELD MUNICIPAL TRUST. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.
30d / 90d windows measured from Jun 9, 2026 — the most recent Form 4 on file — not from today.
- Form 40001193125-26-263931Jun 9, 2026
- Form 40001193125-26-206266May 5, 2026
- Form 40001244199-26-000006Apr 1, 2026
- Form 4/Aamend0001398344-26-001140Jan 23, 2026
- Form 40001398344-26-001051Jan 22, 2026
- Form 40001253367-25-000013Dec 11, 2025
- Form 40001287963-25-000014Oct 6, 2025
- Form 40002050280-25-000010Jun 27, 2025
- Form 40001700264-25-000051Jan 23, 2025
- Form 40001700264-24-000034Oct 1, 2024
- Form 40001700264-24-000019Sep 18, 2024
- Form 40000950170-24-106510Sep 13, 2024
- Form 40000950170-24-102765Sep 3, 2024
- Form 40000950170-24-091547Aug 6, 2024
- Form 40001510281-23-000495Nov 13, 2023
Fundamentals
XBRL · MFS HIGH YIELD MUNICIPAL TRUSTNot enough XBRL history to plot. MFS HIGH YIELD MUNICIPAL TRUSThasn't tagged revenue, net income, EPS, or operating cash flow in the SEC us-gaap taxonomy with at least two fiscal-year periods — typical for SPACs / trust vehicles, pre-revenue biotechs, recent IPOs, and foreign filers reporting under IFRS.
Recent SEC filings
10-K · 10-Q · 8-K · 13D/G · proxyThe most recent material filings for MFS HIGH YIELD MUNICIPAL TRUST — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- DEF 14AProxy statementAug 22, 2025
- SC 13G5%+ ownership (passive)Nov 14, 2024
- SC 13GCITY OF LONDON INVESTMENT MGT CO LTD / MFS HIGH YIELD MUNI - SCH13GNov 14, 2024
- SC 13G/A5%+ ownership (amended)Oct 1, 2024
- SC 13G/A5%+ ownership (amended)Sep 3, 2024
- DEF 14AProxy statementAug 23, 2024
- SC 13D/A5%+ ownership (amended)Feb 28, 2024
- SC 13G/AAMENDED SCHEDULE 13GJan 31, 2024
- SC 13D/AFORM SC 13D/AJan 8, 2024
- SC 13D/A5%+ ownership (amended)Jan 2, 2024
- SC 13D/AFORM SC 13D/ADec 29, 2023
- SC 13D/AFORM SC 13D/ADec 26, 2023
- SC 13G/A5%+ ownership (amended)Dec 1, 2023
- SC 13D/A5%+ ownership (amended)Nov 17, 2023
- SC 13D/AFORM SC 13D/ANov 13, 2023
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| Citadel Advisors | Q3 2025 | open | $0.00 | — | +0% |
| Citadel Advisors | Q3 2024 | Q1 2025 | $0.00 | — | +0% |
- Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
- Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
- “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
- Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
- Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.