Reporting Manager
RIVERNORTH CAPITAL MANAGEMENT, LLC
Symbol
CMU
Shares outstanding
25,484,931 shares
Disclosed Ownership
2,579,075 shares
Ownership
10%
Form type
SCHEDULE 13G/A
Filing time
07 Oct 2025, 15:43:31 UTC
Date of event
30 Sep 2025
Previous filing
15 May 2025

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Quoteable Key Fact

"RIVERNORTH CAPITAL MANAGEMENT, LLC disclosed 10% ownership in MFS HIGH YIELD MUNICIPAL TRUST Shares of Beneficial Interest (CMU) on 30 Sep 2025."

Quick Takeaways

  • RIVERNORTH CAPITAL MANAGEMENT, LLC filed SCHEDULE 13G/A for MFS HIGH YIELD MUNICIPAL TRUST Shares of Beneficial Interest (CMU).
  • Disclosed ownership: 10%.
  • Date of event: 30 Sep 2025.

What Changed

  • Previous schedule filing date: 15 May 2025.
  • Current filing was accepted on 07 Oct 2025, 15:43.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
RIVERNORTH CAPITAL MANAGEMENT, LLC 10% 2,579,075 2,579,075 0 /s/ Marcus Collins Marcus Collins, General Counsel and Chief Compliance Officer