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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, Q4 2023

Institutional positions in Pioneer Municipal High Income Opportunities Fund, Inc. as of Dec 31, 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
33
+5 vs. Q3 2023
Shares held
7.24M
+323.1K (+4.7%) vs. Q3 2023
Total value
$76.5M
+$10.5M (+15.8%) vs. Q3 2023
New holders
13
14 more added
Sold out
8
3 more reduced

1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2023: 33 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 heldQ4 2023: $76.5M
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, Q4 2023

Shares, value and share of portfolio for each institution holding Pioneer Municipal High Income Opportunities Fund, Inc.; share changes are against Q3 2023.

Institutions holding MIO in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Sit Investment Associates Inc1,846,415$19.5M0.48%+700,109+61.1%Added
Saba Capital Management, L.P.1,609,724$17.0M0.42%+261,317+19.4%Added
Morgan Stanley967,629$10.2M0.00%−558,512−36.6%Reduced
Pathstone Holdings, LLC661,502$6.99M0.04%+661,502New
Wells Fargo & Company453,428$4.79M0.00%+26,206+6.1%Added
City of London Investment Management Co Ltd453,046$4.79M0.39%+32,525+7.7%Added
1607 Capital Partners, LLC272,247$2.88M0.20%00.0%Unchanged
Robinson Capital Management, LLC168,542$1.78M0.63%00.0%Unchanged
Van Eck Associates Corp130,901$1.38M0.00%+18,715+16.7%Added
Almitas Capital LLC121,792$1.29M0.44%+121,792New
Matisse Capital121,552$1.28M0.68%+11,552+10.5%Added
Guggenheim Capital LLC102,475$1.08M0.01%+25,390+32.9%Added
UBS Group AG53,723$567.9K0.00%−3,461−6.1%Reduced
Susquehanna International Group, LLP35,848$378.9K0.00%+35,848New
RMB Capital Management, LLC35,000$369.9K0.01%+35,000New
Fountainhead AM, LLC30,086$318.0K0.09%+30,086New
Catalina Capital Group, LLC22,785$240.8K0.19%+22,785New
Nomura Holdings Inc21,250$224.6K0.00%+21,250New
Kingswood Wealth Advisors, LLC17,185$181.6K0.02%+17,185New
Melfa Wealth Management, LLC16,850$178.1K0.17%+16,850New
Raymond James & Associates15,251$161.2K0.00%+15,251New
Wiley Bros.-Aintree Capital, LLC15,049$160.9K0.04%+15,049New
Wolverine Asset Management LLC13,572$143.5K0.00%+11,682+618.1%Added
LPL Financial LLC12,383$130.9K0.00%+117+1.0%Added
HighTower Advisors, LLC13,322$128.0K0.00%+652+5.1%Added
Signaturefd, LLC9,569$101.1K0.00%+162+1.7%Added
Steward Partners Investment Advisory, LLC6,661$70.4K0.00%+200+3.1%Added
Amundi5,227$56.0K0.00%+227+4.5%Added
US Bancorp4,558$48.2K0.00%+4,558New
Comerica Bank3,483$36.8K0.00%00.0%Unchanged
Blue Bell Private Wealth Management, LLC900$9.51K0.00%+900New
Advisor Group Holdings, Inc.749$7.92K0.00%−395−34.5%Reduced
Bessemer Group Inc298$3.00K0.00%+53+21.6%Added
Atlas Wealth LLC0$00.00%−893,578−100.0%Sold out
Woodline Partners LP0$00.00%−200,330−100.0%Sold out
Moors & Cabot, Inc.0$00.00%−62,500−100.0%Sold out
Rockefeller Capital Management L.P.0$00.00%−31,212−100.0%Sold out
Single Point Partners, LLC0$00.00%−10,225−100.0%Sold out
Gradient Investments LLC0$00.00%−2,500−100.0%Sold out
Northwestern Mutual Wealth Management Co0$00.00%−1,000−100.0%Sold out
JPMorgan Chase & Co0$00.00%−154−100.0%Sold out
Advisor Partners II, LLC––––Not filed