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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34 hedge funds and large institutions have $109M invested in Pioneer Municipal High Income Opportunities Fund in 2025 Q1 according to their latest regulatory filings, with 6 funds opening new positions, 10 increasing their positions, 14 reducing their positions, and 2 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
34
Holders Change
+3
Holders Change %
+9.68%
% of All Funds
0.46%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
6
Increased
10
Reduced
14
Closed
2
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
RCM
Rivernorth Capital Management
Florida
+$1.7M
2
HWAM
Hennion & Walsh Asset Management
New Jersey
+$1.57M
3
Verition Fund Management
Verition Fund Management
Connecticut
+$888K
4
SCM
Saba Capital Management
New York
+$397K
5
AAM
Auxier Asset Management
Oregon
+$203K

Top Sellers

1
Morgan Stanley
Morgan Stanley
New York
-$1.14M
2
Pathstone Holdings
Pathstone Holdings
New Jersey
-$1.12M
3
Wells Fargo
Wells Fargo
California
-$522K
4
VanEck Associates
VanEck Associates
New York
-$489K
5
AF
Atala Financial
California
-$356K
Name Holding Trade Value Shares
Change 		Shares
Change %
SIA
1
Sit Investment Associates
Minnesota
$30M +$172K +14,565 +0.6%
SCM
2
Saba Capital Management
New York
$24.9M +$397K +33,699 +2%
RCM
3
Rivernorth Capital Management
Florida
$18.6M +$1.7M +144,076 +10%
Morgan Stanley
4
Morgan Stanley
New York
$8.19M -$1.14M -96,575 -12%
Pathstone Holdings
5
Pathstone Holdings
New Jersey
$6.68M -$1.12M -91,059 -14%
GC
6
Guggenheim Capital
Illinois
$5.07M -$87.9K -7,452 -2%
Wells Fargo
7
Wells Fargo
California
$4.08M -$522K -44,316 -11%
AC
8
Almitas Capital
California
$2.53M -$191K -16,187 -7%
HWAM
9
Hennion & Walsh Asset Management
New Jersey
$1.57M +$1.57M +133,165 New
Royal Bank of Canada
10
Royal Bank of Canada
Ontario, Canada
$979K -$3.26K -276 -0.3%
VanEck Associates
11
VanEck Associates
New York
$949K -$489K -41,454 -34%
Verition Fund Management
12
Verition Fund Management
Connecticut
$888K +$888K +75,356 New
Invesco
13
Invesco
Georgia
$704K +$10.6K +899 +2%
TJHA
14
Thomas J. Herzfeld Advisors
Florida
$620K +$115K +9,753 +23%
AAS
15
Avantax Advisory Services
Texas
$558K +$21K +1,782 +4%
UBS Group
16
UBS Group
Switzerland
$468K +$22.3K +1,888 +5%
NWMP
17
Noble Wealth Management PBC
Colorado
$422K +$105K +8,868 +33%
Bank of New York Mellon
18
Bank of New York Mellon
New York
$418K – – –
BBPWM
19
Blue Bell Private Wealth Management
Pennsylvania
$273K -$28K -2,378 -9%
CCG
20
Catalina Capital Group
California
$218K – – –
AAM
21
Auxier Asset Management
Oregon
$203K +$203K +17,208 New
MWM
22
Melfa Wealth Management
Massachusetts
$199K – – –
Susquehanna International Group
23
Susquehanna International Group
Pennsylvania
$178K +$178K +15,106 New
Raymond James Financial
24
Raymond James Financial
Florida
$157K -$8.27K -701 -5%
FA
25
Fountainhead AM
New Jersey
$122K -$220K -18,644 -64%
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