MIO

Pioneer Municipal High Income Opportunities Fund
MIO

Overview Fund Activity
Delisted

MIO was delisted on the 22nd of August, 2025.

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29 hedge funds and large institutions have $103M invested in Pioneer Municipal High Income Opportunities Fund in 2024 Q3 according to their latest regulatory filings, with 5 funds opening new positions, 12 increasing their positions, 8 reducing their positions, and 8 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
29
Holders Change
-3
Holders Change %
-9.38%
% of All Funds
0.42%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
5
Increased
12
Reduced
8
Closed
8
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
RCM
Rivernorth Capital Management
Florida
+$4.68M
2
SCM
Saba Capital Management
New York
+$1.17M
3
GC
Guggenheim Capital
Illinois
+$1.02M
4
Invesco
Invesco
Georgia
+$490K
5
TJHA
Thomas J. Herzfeld Advisors
Florida
+$463K

Top Sellers

1
AW
Atlas Wealth
Ohio
-$13.1M
2
WA
Whitebox Advisors
Minnesota
-$1.34M
3
COLIM
City of London Investment Management
United Kingdom
-$1.33M
4
Morgan Stanley
Morgan Stanley
New York
-$618K
5
AC
Almitas Capital
California
-$450K
Name Holding Trade Value Shares
Change 		Shares
Change %
SIA
1
Sit Investment Associates
Minnesota
$28.8M +$403K +32,489 +1%
SCM
2
Saba Capital Management
New York
$22.7M +$1.17M +94,048 +5%
RCM
3
Rivernorth Capital Management
Florida
$14M +$4.68M +377,242 +50%
Morgan Stanley
4
Morgan Stanley
New York
$10.5M -$618K -49,802 -6%
Pathstone Holdings
5
Pathstone Holdings
New Jersey
$7.91M -$255K -20,572 -3%
GC
6
Guggenheim Capital
Illinois
$5.32M +$1.02M +82,091 +24%
Wells Fargo
7
Wells Fargo
California
$4.9M -$310K -25,013 -6%
VanEck Associates
8
VanEck Associates
New York
$1.45M -$34.8K -2,881 -2%
AC
9
Almitas Capital
California
$1.27M -$450K -36,271 -26%
Royal Bank of Canada
10
Royal Bank of Canada
Ontario, Canada
$1.12M -$186K -15,000 -14%
Invesco
11
Invesco
Georgia
$736K +$490K +39,481 +199%
TJHA
12
Thomas J. Herzfeld Advisors
Florida
$463K +$463K +37,316 New
Bank of New York Mellon
13
Bank of New York Mellon
New York
$439K +$249K +20,114 +131%
SA
14
Sanctuary Advisors
Indiana
$413K -$10.4K -861 -2%
UBS Group
15
UBS Group
Switzerland
$391K +$10.2K +826 +3%
AAS
16
Avantax Advisory Services
Texas
$366K +$366K +29,513 New
FA
17
Fountainhead AM
New Jersey
$357K +$2.79K +225 +0.8%
KWA
18
Kingswood Wealth Advisors
California
$345K – – –
BBPWM
19
Blue Bell Private Wealth Management
Pennsylvania
$307K +$8.3K +669 +3%
MWM
20
Melfa Wealth Management
Massachusetts
$209K – – –
WFA
21
WMG Financial Advisors
Tennessee
$137K +$12.3K +994 +10%
RCM
22
Robinson Capital Management
Michigan
$123K +$123K +9,905 New
S
23
SignatureFD
Georgia
$123K +$1.5K +121 +1%
AWM
24
Avior Wealth Management
Nebraska
$109K +$50 +4 +0%
SPIA
25
Steward Partners Investment Advisory
New York
$105K – – –
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