Pioneer Municipal High Income Opportunities Fund, Inc. MIO

Institutional shares held 9.44 Million

0 calls

0 puts

Total value of holdings $107M

$0 calls

$0 puts

Market Cap N/A

Institutional ownership N/A

# of Institutions 37

We take great care to ensure that the data presented and summarized in this overview for Pioneer Municipal High Income Opportunities Fund, Inc. is accurate and up-to-date, based on a comprehensive analysis of 13F filing forms for institutional ownership and form 4 filings for insider transactions. Please note that this data may differ from other sources and should not be relied upon as the sole basis for investment decisions.

Quarterly Institutional Activity in MIO

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Top Institutions Holding MIO

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Latest Institutional Activity in MIO

Top Purchases

Q2 2025

Almitas Capital LLC Shares Held: 791K ($8.97M)

576K Shares purchased

268.04% Added

Q2 2025

Karpus Management, Inc. Shares Held: 496K ($5.63M)

496K Shares purchased

New Holding

Q2 2025

Hennion & Walsh Asset Management, Inc. Shares Held: 252K ($2.86M)

119K Shares purchased

89.42% Added

Q2 2025

Bulldog Investors, LLP Shares Held: 80.4K ($911K)

80.4K Shares purchased

New Holding

Q2 2025

Ubs Group Ag Shares Held: 105K ($1.19M)

65.5K Shares purchased

164.97% Added

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Top Sells

Q2 2025

Rivernorth Capital Management, LLC Shares Held: 753K ($8.53M)

823K Shares sold

52.25% Reduced

Q2 2025

Pathstone Holdings, LLC Shares Held: 137K ($1.56M)

405K Shares sold

74.71% Reduced

Q2 2025

Morgan Stanley Shares Held: 587K ($6.66M)

108K Shares sold

15.49% Reduced

Q2 2025

Guggenheim Capital LLC Shares Held: 409K ($4.64M)

21K Shares sold

4.9% Reduced

Q2 2025

Raymond James Financial Inc Shares Held: 10.7K ($121K)

2.69K Shares sold

20.14% Reduced

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About MIO

Insider Transactions at MIO

Insider Transaction List

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Date	Insider	Transaction	Ownership Type	Shares Traded	Value / Price
May 07 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	1,090 +0.05%	$11,990 $11.58 P/Share
Apr 29 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	197 +0.01%	$2,167 $11.51 P/Share
Apr 22 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	10,963 +0.51%	$120,593 $11.29 P/Share
Apr 21 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	5,310 +0.25%	$58,410 $11.24 P/Share
Apr 11 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	26,990 +1.24%	$296,890 $11.18 P/Share
Apr 08 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	2,465 +0.12%	$27,115 $11.38 P/Share
Apr 07 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	700 +0.03%	$7,700 $11.64 P/Share
Jan 31 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	2,829 +0.13%	$33,948 $12.0 P/Share
Jan 28 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	200 +0.01%	$2,200 $11.95 P/Share
Jan 27 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	913 +0.04%	$10,043 $11.97 P/Share
Jan 24 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	2,500 +0.12%	$27,500 $11.94 P/Share
Jan 23 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	11,150 +0.53%	$122,650 $11.92 P/Share
Jan 22 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	100 +0.0%	$1,100 $11.92 P/Share
Jan 21 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	51 +0.0%	$561 $11.91 P/Share
Jan 16 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	6,637 +0.32%	$73,007 $11.84 P/Share
Jan 10 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	100 +0.0%	$1,100 $11.89 P/Share
Jan 08 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	2,769 +0.13%	$33,228 $12.0 P/Share
Jan 03 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	1,133 +0.05%	$12,463 $11.99 P/Share
Jan 02 2025	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	5,317 +0.25%	$58,487 $11.96 P/Share
Dec 30 2024	Saba Capital Management, L.P. > 10% Shareholder	BUY Open market or private purchase	Indirect	21,469 +1.02%	$236,159 $11.91 P/Share

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Last 12 Months Summary

Buy / Acquisition

358K Shares

From 1 Insiders

Open market or private purchase	358K shares

Sell / Disposition

0 Shares

From 0 Insiders

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Pioneer Municipal High Income Opportunities Fund, Inc. MIO

Quarterly Institutional Activity in MIO

Top Institutions Holding MIO

Latest Institutional Activity in MIO

Top Purchases

Top Sells

About MIO

Insider Transactions at MIO

Insider Transaction List

Last 12 Months Summary

Track Institutional and Insider Activities on MIO

Institutional Portfolio Updates

Insider Trading

News