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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24 hedge funds and large institutions have $70M invested in Pioneer Municipal High Income Opportunities Fund in 2023 Q2 according to their latest regulatory filings, with 4 funds opening new positions, 8 increasing their positions, 5 reducing their positions, and 5 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
24
Holders Change
-1
Holders Change %
-4%
% of All Funds
0.38%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
4
Increased
8
Reduced
5
Closed
5
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
RCM
Robinson Capital Management
Michigan
+$1.89M
2
AW
Atlas Wealth
Ohio
+$1.85M
3
SCM
Saba Capital Management
New York
+$1.12M
4
Wells Fargo
Wells Fargo
California
+$794K
5
RCM
Rivernorth Capital Management
Florida
+$708K

Top Sellers

1
WP
Woodline Partners
California
-$211K
2
LPL Financial
LPL Financial
California
-$137K
3
SPP
Single Point Partners
Massachusetts
-$112K
4
UBS Group
UBS Group
Switzerland
-$108K
5
Osaic Holdings
Osaic Holdings
Arizona
-$43.9K
Name Holding Trade Value Shares
Change 		Shares
Change %
Morgan Stanley
1
Morgan Stanley
New York
$15.9M +$20.2K +1,878 +0.1%
SCM
2
Saba Capital Management
New York
$12.4M +$1.12M +103,736 +10%
SIA
3
Sit Investment Associates
Minnesota
$10.6M – – –
AW
4
Atlas Wealth
Ohio
$9.51M +$1.85M +169,396 +24%
COLIM
5
City of London Investment Management
United Kingdom
$4.54M – – –
Wells Fargo
6
Wells Fargo
California
$4.02M +$794K +73,785 +25%
1CP
7
1607 Capital Partners
Virginia
$2.93M -$19.4K -1,800 -0.7%
WP
8
Woodline Partners
California
$2.69M -$211K -19,570 -7%
RCM
9
Robinson Capital Management
Michigan
$1.89M +$1.89M +175,767 New
VanEck Associates
10
VanEck Associates
New York
$1.36M +$56.3K +5,231 +4%
MC
11
Matisse Capital
Oregon
$1.18M – – –
RCM
12
Rivernorth Capital Management
Florida
$708K +$708K +66,086 New
MC
13
Moors & Cabot
Massachusetts
$667K +$53.8K +5,000 +9%
UBS Group
14
UBS Group
Switzerland
$625K -$108K -10,075 -15%
Bank of New York Mellon
15
Bank of New York Mellon
New York
$255K +$255K +23,659 New
Rockefeller Capital Management
16
Rockefeller Capital Management
New York
$228K – – –
NA
17
NewEdge Advisors
Louisiana
$160K – – –
HighTower Advisors
18
HighTower Advisors
Illinois
$126K -$28.3K -2,899 -18%
S
19
SignatureFD
Georgia
$100K +$1.23K +114 +1%
SPIA
20
Steward Partners Investment Advisory
New York
$65.2K – – –
Amundi
21
Amundi
France
$54.1K – – –
Osaic Holdings
22
Osaic Holdings
Arizona
$9.84K -$43.9K -4,084 -82%
Bessemer Group
23
Bessemer Group
New Jersey
$2K +$35 +4 +2%
Carson Wealth (CWM LLC)
24
Carson Wealth (CWM LLC)
Nebraska
$1K +$1K +67 New
LPL Financial
25
LPL Financial
California
– -$137K -12,524 Closed
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