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Pioneer Municipal High Income Opportunities Fund, Inc.

MIODelisted Aug 27, 2025

Pioneer Municipal High Income Opportunities Fund, Inc. was delisted on Aug 27, 2025; its insiders filed their last Form 4 on Sep 2, 2025; 31 institutions reported holding it in 13F filings for Q2 2025, worth $108.4M in total; no superinvestor held it.

13F holders, Q2 2023

Institutional positions in Pioneer Municipal High Income Opportunities Fund, Inc. as of Jun 30, 2023. 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

Institutional holders
24
−1 vs. Q1 2023
Shares held
6.49M
+560.3K (+9.4%) vs. Q1 2023
Total value
$70.0M
+$5.21M (+8.0%) vs. Q1 2023
New holders
4
8 more added
Sold out
5
5 more reduced

Compare with Q1 2023: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MIO 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 holdersQ2 2023: 24 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 7 institutionsQ4 2021: 23 institutionsQ1 2022: 24 institutionsQ2 2022: 26 institutionsQ3 2022: 25 institutionsQ4 2022: 26 institutionsQ1 2023: 25 institutionsQ2 2023: 24 institutionsQ3 2023: 29 institutionsQ4 2023: 33 institutionsQ1 2024: 31 institutionsQ2 2024: 32 institutionsQ3 2024: 29 institutionsQ4 2024: 31 institutionsQ1 2025: 34 institutionsQ2 2025: 31 institutionsQ3 2025: 1 institutionQ4 2025: 0 institutionsQ1 2026: 0 institutionsQ2 2026: 0 institutions
Value heldQ2 2023: $70.0M
Q1 2021: $0Q2 2021: $0Q3 2021: $22.8MQ4 2021: $71.4MQ1 2022: $63.4MQ2 2022: $57.4MQ3 2022: $49.5MQ4 2022: $60.4MQ1 2023: $64.8MQ2 2023: $70.0MQ3 2023: $67.8MQ4 2023: $76.5MQ1 2024: $84.3MQ2 2024: $106.4MQ3 2024: $102.7MQ4 2024: $109.1MQ1 2025: $109.3MQ2 2025: $108.4MQ3 2025: $12.1KQ4 2025: $0Q1 2026: $0Q2 2026: $0
Institutions holding MIO and their total value by quarter
QuarterHoldersValue
Q2 20260$0
Q1 20260$0
Q4 20250$0
Q3 20251$12.1K
Q2 202531$108.4M
Q1 202534$109.3M
Q4 202431$109.1M
Q3 202429$102.7M
Q2 202432$106.4M
Q1 202431$84.3M
Q4 202333$76.5M
Q3 202329$67.8M
Q2 202324$70.0M
Q1 202325$64.8M
Q4 202226$60.4M
Q3 202225$49.5M
Q2 202226$57.4M
Q1 202224$63.4M
Q4 202123$71.4M
Q3 20217$22.8M
Q2 20210$0
Q1 20210$0

Institutions, Q2 2023

Shares, value and share of portfolio for each institution holding Pioneer Municipal High Income Opportunities Fund, Inc.; share changes are against Q1 2023.

Institutions holding MIO in Q2 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Morgan Stanley1,477,608$15.9M0.00%+1,878+0.1%Added
Saba Capital Management, L.P.1,149,122$12.4M0.41%+103,736+9.9%Added
Sit Investment Associates Inc985,601$10.6M0.28%00.0%Unchanged
Atlas Wealth LLC870,773$9.51M1.75%+169,396+24.2%Added
City of London Investment Management Co Ltd420,521$4.54M0.37%00.0%Unchanged
Wells Fargo & Company373,484$4.02M0.00%+73,785+24.6%Added
1607 Capital Partners, LLC272,247$2.93M0.21%−1,800−0.7%Reduced
Woodline Partners LP250,338$2.69M0.03%−19,570−7.3%Reduced
Robinson Capital Management, LLC175,767$1.89M0.84%+175,767New
Van Eck Associates Corp126,804$1.36M0.00%+5,231+4.3%Added
Matisse Capital110,000$1.18M0.73%00.0%Unchanged
Rivernorth Capital Management, LLC66,086$707.8K0.04%+66,086New
Moors & Cabot, Inc.62,000$667.1K0.04%+5,000+8.8%Added
UBS Group AG58,091$625.1K0.00%−10,075−14.8%Reduced
Bank of New York Mellon Corp23,659$254.6K0.00%+23,659New
Rockefeller Capital Management L.P.21,212$228.2K0.00%00.0%Unchanged
GWM Advisors LLC14,900$160.3K0.00%00.0%Unchanged
HighTower Advisors, LLC12,929$126.0K0.00%−2,899−18.3%Reduced
Signaturefd, LLC9,295$100.0K0.00%+114+1.2%Added
Steward Partners Investment Advisory, LLC6,061$65.2K0.00%00.0%Unchanged
Amundi5,000$54.1K0.00%00.0%Unchanged
Advisor Group Holdings, Inc.915$9.84K0.00%−4,084−81.7%Reduced
Bessemer Group Inc226$2.00K0.00%+4+1.8%Added
CWM, LLC67$1.00K0.00%+67New
LPL Financial LLC0$00.00%−12,524−100.0%Sold out
Single Point Partners, LLC0$00.00%−10,225−100.0%Sold out
Royal Bank of Canada0$00.00%−2,811−100.0%Sold out
BDO Wealth Advisors, LLC0$00.00%−368−100.0%Sold out
JPMorgan Chase & Co0$00.00%−47−100.0%Sold out