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Pioneer Municipal High Income Fund, Inc.

MHIDelisted Aug 27, 2025

Pioneer Municipal High Income Fund, Inc. was delisted on Aug 27, 2025; its insiders filed their last Form 4 on Sep 2, 2025; 57 institutions reported holding it in 13F filings for Q2 2025, worth $128.8M in total; no superinvestor held it.

13F holders, Q4 2025

Institutional positions in Pioneer Municipal High Income Fund, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

MHI is no longer listed, and 13F filings after Q2 2025 list far fewer holders. See Q2 2025

Institutional holders
0
−2 vs. Q3 2025
Shares held
0
−125.3K (−100.0%) vs. Q3 2025
Total value
$0
−$1.12M (−100.0%) vs. Q3 2025
New holders
0
0 more added
Sold out
2
0 more reduced

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MHI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 0 institutions
Q1 2021: 55 institutionsQ2 2021: 52 institutionsQ3 2021: 51 institutionsQ4 2021: 63 institutionsQ1 2022: 64 institutionsQ2 2022: 69 institutionsQ3 2022: 70 institutionsQ4 2022: 57 institutionsQ1 2023: 63 institutionsQ2 2023: 63 institutionsQ3 2023: 64 institutionsQ4 2023: 60 institutionsQ1 2024: 54 institutionsQ2 2024: 51 institutionsQ3 2024: 48 institutionsQ4 2024: 55 institutionsQ1 2025: 59 institutionsQ2 2025: 57 institutionsQ3 2025: 2 institutionsQ4 2025: 0 institutionsQ1 2026: 0 institutionsQ2 2026: 0 institutions
Value heldQ4 2025: $0
Q1 2021: $68.0MQ2 2021: $67.7MQ3 2021: $67.3MQ4 2021: $75.5MQ1 2022: $71.2MQ2 2022: $72.8MQ3 2022: $62.8MQ4 2022: $58.1MQ1 2023: $63.5MQ2 2023: $67.0MQ3 2023: $70.6MQ4 2023: $92.6MQ1 2024: $101.0MQ2 2024: $115.9MQ3 2024: $122.6MQ4 2024: $128.6MQ1 2025: $131.7MQ2 2025: $128.8MQ3 2025: $1.12MQ4 2025: $0Q1 2026: $0Q2 2026: $0
Institutions holding MHI and their total value by quarter
QuarterHoldersValue
Q2 20260$0
Q1 20260$0
Q4 20250$0
Q3 20252$1.12M
Q2 202557$128.8M
Q1 202559$131.7M
Q4 202455$128.6M
Q3 202448$122.6M
Q2 202451$115.9M
Q1 202454$101.0M
Q4 202360$92.6M
Q3 202364$70.6M
Q2 202363$67.0M
Q1 202363$63.5M
Q4 202257$58.1M
Q3 202270$62.8M
Q2 202269$72.8M
Q1 202264$71.2M
Q4 202163$75.5M
Q3 202151$67.3M
Q2 202152$67.7M
Q1 202155$68.0M

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Pioneer Municipal High Income Fund, Inc.; share changes are against Q3 2025.

Institutions holding MHI in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Nuveen, LLC0$00.00%−116,279−100.0%Sold out
Advisor Group Holdings, Inc.0$00.00%−9,024−100.0%Sold out