No share count in the company’s recent SEC filingsNo share count in the company’s recent SEC filings, so we show no figure rather than a guess. Shares outstanding from the company’s latest SEC filing (all share classes, each priced at its own close; ADRs converted to ADS) × last close from Tiingo. Updated daily.CIK 1266585The SEC’s Central Index Key, the number it uses to identify every company and person that files.
Insider trades, 12 mo
10 buys · 11 sells
$41.2K sold, open market
Congress trades, 24 mo
—
No disclosed trades
13F holders
…
Lobbying, 12 mo
—
No lobbying filings
Federal contracts, 12 mo
—
None matched
Ask your AI:
Latest 10-Q
What changed in Nuveen Municipal High Income Opportunity Fund's latest quarterly report, compared with the one before.
We have not read a recent 10-Q for this company yet.
Insider trades
Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.
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13F holders
Funds that report this stock, checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
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Top 10 holders.Premium lists every holder, with CSV downloads.
Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.
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Lobbying
What Nuveen Municipal High Income Opportunity Fund and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.
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Institutional ownership over time
How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.
13F holders, Q3 2026Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
133
44 added · 39 trimmed
Insider trades
21 in 12 mo
Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.
No open-market insider trades reported since Aug 4, 2026. Insiders have two business days to file.
Recent insider trades
How the stock has done since the trade date, measured against the S&P 500 over the same days. It describes the stock, not the trader's actual gain or loss.
133 funds report NMZ. Values checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
Q3 2026. 14 new, 44 added to, 39 trimmed, 96 exited since Q2 2026.
One of these funds reports its values in thousands of dollars; its figures are shown in dollars.
Download CSVEvery fund that holds NMZ, not only these ten. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Trades by members of Congress
Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.
No recent congressional trades for this company.
Lobbying
What Nuveen Municipal High Income Opportunity Fund and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.
No recent lobbying filings for this company.
Institutional ownership over time
How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.
Funds holding the stock
Shares they report
Funds holding the stock by quarter
Q2 2013
35
—
1.37M
$18.5M
Q3 2013
40
+5
3.17M
$37.0M
Q4 2013
44
+4
3.29M
$39.5M
Q1 2014
41
-3
2.78M
$35.3M
Q2 2014
46
+5
3.16M
$41.2M
Q3 2014
45
-1
3.00M
$38.8M
Q4 2014
52
+7
2.93M
$41.8M
Q1 2015
49
-3
2.67M
$36.6M
Q2 2015
49
0
2.46M
$31.8M
Q3 2015
44
-5
2.38M
$31.4M
Q4 2015
44
0
2.48M
$34.1M
Q1 2016
45
+1
3.20M
$44.8M
Q2 2016
45
0
2.94M
$43.8M
Q3 2016
48
+3
3.32M
$45.4M
Q4 2016
55
+7
3.95M
$50.6M
Q1 2017
48
-7
3.54M
$46.8M
Q2 2017
51
+3
3.51M
$47.0M
Q3 2017
54
+3
3.72M
$50.7M
Q4 2017
54
0
3.46M
$47.1M
Q1 2018
67
+13
4.42M
$55.3M
Q2 2018
71
+4
4.50M
$57.0M
Q3 2018
68
-3
4.45M
$55.9M
Q4 2018
76
+8
6.55M
$76.1M
Q1 2019
77
+1
5.68M
$76.9M
Q2 2019
76
-1
5.04M
$70.4M
Q3 2019
83
+7
5.30M
$76.3M
Q4 2019
94
+11
6.25M
$88.6M
Q1 2020
94
0
7.23M
$90.0M
Q2 2020
86
-8
6.62M
$87.4M
Q3 2020
97
+11
7.01M
$94.6M
Q4 2020
109
+12
7.17M
$103.4M
Q1 2021
109
0
8.49M
$122.6M
Q2 2021
107
-2
9.03M
$138.9M
Q3 2021
114
+7
9.79M
$144.3M
Q4 2021
123
+9
10.33M
$155.7M
Q1 2022
111
-12
10.53M
$136.4M
Q2 2022
119
+8
10.76M
$126.0M
Q3 2022
121
+2
10.70M
$110.2M
Q4 2022
127
+6
12.41M
$126.8M
Q1 2023
122
-5
13.77M
$148.6M
Q2 2023
112
-10
13.50M
$142.7M
Q3 2023
114
+2
13.64M
$126.6M
Q4 2023
132
+18
17.33M
$171.2M
Q1 2024
116
-16
19.92M
$210.2M
Q2 2024
119
+3
15.68M
$169.2M
Q3 2024
122
+3
16.03M
$186.6M
Q4 2024
126
+4
16.70M
$180.6M
Q1 2025
133
+7
17.40M
$189.8M
Q2 2025
129
-4
17.72M
$183.7M
Q3 2025
127
-2
18.89M
$187.1M
Q4 2025
133
+6
19.21M
$195.7M
Q1 2026
140
+7
20.28M
$210.4M
Q2 2026
214
+74
34.18M
$361.3M
Q3 2026
133
-81
19.49M
$174.7M
Each point is a quarter-end, from Q2 2013 to Q3 2026. A fund's 13F lists its long positions in US-listed securities as of the last day of the quarter and arrives up to 45 days later, so each point shows holdings at quarter-end, not on the day they were reported.
Common shares only; options and bonds are left out. When a fund amends a report, the amended version is the one counted.
The history follows the company's current CUSIP number (670682103). If the company's shares were ever re-issued under a different CUSIP, the quarters before the change are not part of this series, so the first point (Q2 2013) can be later than the stock's first appearance in 13F reports.
Share counts are adjusted for stock splits; none took place between these quarters. Values are in dollars as reported at the time and are not adjusted.
A quarter appears once our daily update has built its summary. If a summary cannot be built, older reports are kept and the chart shows the quarters it has until the next update repairs it.