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MFS HIGH YIELD MUNICIPAL TRUST

corporate_fare Company Profile

MFS HIGH YIELD MUNICIPAL TRUST

CMU·NYSE·Unknown·CIK 0000809844

MFS High Yield Municipal Trust is a closed-end fixed income mutual fund managed by Massachusetts Financial Services Company. The fund invests in the fixed income markets of the United States, primarily focusing on tax-exempt bonds and tax-exempt notes. Its portfolio performance is benchmarked against the Barclays Municipal Bond Index. The fund was founded on March 19, 1987, and is domiciled in the United States. It was formerly known as Colonial Municipal Income Trust.

MFS HIGH YIELD MUNICIPAL TRUST (NYSE:CMU) is a publicly traded company in the Unknown sector. Wiseek has independently scored 10 items for CMU at importance 7 or higher on its 1–10 market-impact scale. Its most recent item scored 7 or higher is dated 2026-05-12, rated 8/10. Across its 10 most recent items scored 7 or higher, the top rating is 9/10, with 7 rated 8 or above. Recent SEC coverage for CMU spans SCHEDULE 13D/A, SC TO-I/A, SC TO-I, N-23C-2.

Recent high-impact activity:

  • Activist Investor Bulldog Investors Exits Major Stake in MFS High Yield Municipal Trust
  • MFS High Yield Municipal Trust Finalizes Tender Offer, Repurchasing 50% of Shares
  • MFS High Yield Municipal Trust Finalizes Tender Offer, Repurchasing 50% of Shares
  • MFS High Yield Municipal Trust Announces Preliminary Results of 50% Tender Offer
  • Bulldog Investors Discloses $3.9M Share Sales, Reducing Stake in MFS High Yield Municipal Trust
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No longer listed

CMU (MFS HIGH YIELD MUNICIPAL TRUST) is no longer listed on a major US exchange, so Wiseek no longer shows market data for this symbol. It last appeared on NYSE. The filings and coverage below remain available as an archive.

feed CMU - Latest Insights

CMU
May 12, 2026, 4:05 PM EDT
Filing Type: SCHEDULE 13D/A
Importance Score:
8
Activist Investor Bulldog Investors Exits Major Stake in MFS High Yield Municipal Trust
Sentiment: Negative
View Wiseek Article
CMU
May 11, 2026, 6:35 PM EDT
Source: Reuters
Importance Score:
9
MFS High Yield Municipal Trust Finalizes Tender Offer, Repurchasing 50% of Shares
Sentiment: Neutral
View Wiseek Article
CMU
May 11, 2026, 5:29 PM EDT
Filing Type: SC TO-I/A
Importance Score:
9
MFS High Yield Municipal Trust Finalizes Tender Offer, Repurchasing 50% of Shares
Sentiment: Positive
View Wiseek Article
CMU
May 06, 2026, 8:25 AM EDT
Filing Type: SC TO-I/A
Importance Score:
9
MFS High Yield Municipal Trust Announces Preliminary Results of 50% Tender Offer
Sentiment: Positive
View Wiseek Article
CMU
May 05, 2026, 4:39 PM EDT
Filing Type: SCHEDULE 13D/A
Importance Score:
7
Bulldog Investors Discloses $3.9M Share Sales, Reducing Stake in MFS High Yield Municipal Trust
Sentiment: Negative
View Wiseek Article
CMU
May 01, 2026, 4:27 PM EDT
Filing Type: SCHEDULE 13D/A
Importance Score:
7
Bulldog Investors Reduces Stake in MFS High Yield Municipal Trust
Sentiment: Negative
View Wiseek Article
CMU
Apr 09, 2026, 4:20 PM EDT
Filing Type: SCHEDULE 13D/A
Importance Score:
8
Activist Investor Bulldog Investors Significantly Reduces Stake Amidst Tender Offer
Sentiment: Negative
View Wiseek Article
CMU
Apr 06, 2026, 4:26 PM EDT
Filing Type: SC TO-I
Importance Score:
9
MFS High Yield Municipal Trust Commences Tender Offer for Up to 50% of Outstanding Shares
Sentiment: Neutral
View Wiseek Article
CMU
Apr 01, 2026, 4:28 PM EDT
Filing Type: N-23C-2
Importance Score:
7
MFS High Yield Municipal Trust Files Intent to Redeem Up to 35% of Preferred Shares
Sentiment: Neutral
View Wiseek Article
CMU
Mar 04, 2026, 4:20 PM EST
Filing Type: SC TO-C
Importance Score:
9
MFS High Yield Municipal Trust Announces Conditional Tender Offer for Up to 50% of Shares
Sentiment: Positive
View Wiseek Article
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