Nuveen Municipal High Income Opportunity Fund (NMZ) Latest Stock Analysis Report – Oct 15, 2026, 4:00 PM ET
Updated Oct 15, 2026, 4:00 PM ET
- Closed at $9.11, +1.90% vs the prior close of $8.94.
- Volume 959.40K shares, 0.8x its 50-day average.
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
NMZ rises 1.9% to $9.11. Closed at $9.11, +1.90% vs the prior close of $8.94. Day range $8.95–$9.11, opened at $8.99.
NMZ daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 15, 2026 — NMZ rises 1.9% to $9.11
- Closed at $9.11, +1.90% vs the prior close of $8.94. Day range $8.95–$9.11, opened at $8.99.
- Volume was 959.40K shares, 0.8x its 50-day average of 1.13M.
- Price is -4.9% vs its 50-day average ($9.58) and -10.3% vs its 200-day average ($10.16).
- 52-week range $8.69–$10.77; today's close sits at 20% of that range, 15.4% below the 52-week high.
Oct 14, 2026 — NMZ dips 1.4% to $8.94
- Closed at $8.94, -1.43% vs the prior close of $9.07. Day range $8.94–$9.03, opened at $9.01.
- Volume was 965.80K shares, 0.9x its 50-day average of 1.13M.
- Price is -6.9% vs its 50-day average ($9.60) and -12.1% vs its 200-day average ($10.17).
- 52-week range $8.69–$10.77; today's close sits at 12% of that range, 17.0% below the 52-week high.
Oct 13, 2026 — NMZ rises 0.7% to $9.07
- Closed at $9.07, +0.67% vs the prior close of $9.01. Day range $8.95–$9.11, opened at $9.01.
- Volume was 1.13M shares, 1.0x its 50-day average of 1.13M.
- Price is -5.7% vs its 50-day average ($9.62) and -10.8% vs its 200-day average ($10.17).
- 52-week range $8.69–$10.77; today's close sits at 18% of that range, 15.8% below the 52-week high.
Oct 12, 2026 — NMZ dips 0.9% to $9.01
- Closed at $9.01, -0.88% vs the prior close of $9.09. Day range $8.95–$9.08, opened at $9.08.
- Volume was 954.30K shares, 0.9x its 50-day average of 1.12M.
- Price is -6.6% vs its 50-day average ($9.64) and -11.5% vs its 200-day average ($10.18).
- 52-week range $8.69–$10.77; today's close sits at 15% of that range, 16.3% below the 52-week high.
Oct 9, 2026 — NMZ rises 0.7% to $9.09 on 2.6x normal volume
- Closed at $9.09, +0.66% vs the prior close of $9.03. Day range $8.98–$9.13, opened at $9.04.
- Volume was 2.78M shares, 2.6x its 50-day average of 1.08M — unusually heavy trading.
- Price is -6.0% vs its 50-day average ($9.67) and -10.7% vs its 200-day average ($10.18).
- 52-week range $8.69–$10.77; today's close sits at 19% of that range, 15.6% below the 52-week high.
- That makes 4 straight gains.
Oct 8, 2026 — NMZ rises 0.8% to $9.03, 3 up days in a row
- Closed at $9.03, +0.78% vs the prior close of $8.96. Day range $8.92–$9.06, opened at $8.99.
- Volume was 1.57M shares, 1.5x its 50-day average of 1.06M.
- Price is -6.8% vs its 50-day average ($9.69) and -11.4% vs its 200-day average ($10.19).
- 52-week range $8.69–$10.77; today's close sits at 16% of that range, 16.2% below the 52-week high.
- That makes 3 straight gains.
Oct 7, 2026 — NMZ ends flat (+0.2%) to $8.96 on 2.7x normal volume
- Closed at $8.96, +0.22% vs the prior close of $8.94. Day range $8.69–$9.03, opened at $8.79.
- Volume was 2.76M shares, 2.7x its 50-day average of 1.02M — unusually heavy trading.
- Price is -7.8% vs its 50-day average ($9.71) and -12.1% vs its 200-day average ($10.20).
- 52-week range $8.69–$10.77; today's close sits at 13% of that range, 16.8% below the 52-week high.
Oct 6, 2026 — NMZ rises 2.1% to $8.94
- Closed at $8.94, +2.05% vs the prior close of $8.76. Day range $8.76–$8.94, opened at $8.79.
- Volume was 1.44M shares, 1.4x its 50-day average of 1.00M.
- Price is -8.2% vs its 50-day average ($9.74) and -12.4% vs its 200-day average ($10.20).
- 52-week range $8.70–$10.77; today's close sits at 12% of that range, 17.0% below the 52-week high.
Oct 5, 2026 — NMZ dips 2.1% to $8.76, a 52-week low on 2.1x normal volume
- Closed at $8.76, -2.12% vs the prior close of $8.95. Day range $8.73–$8.90, opened at $8.90.
- Volume was 2.05M shares, 2.1x its 50-day average of 977.77K — unusually heavy trading.
- Price is -10.3% vs its 50-day average ($9.76) and -14.2% vs its 200-day average ($10.21).
- 52-week range $8.70–$10.77; today's close sits at 3% of that range, 18.7% below the 52-week high.
Oct 2, 2026 — NMZ rises 0.6% to $8.95 on 1.9x normal volume
- Closed at $8.95, +0.56% vs the prior close of $8.90. Day range $8.89–$9.09, opened at $8.97.
- Volume was 1.81M shares, 1.9x its 50-day average of 953.25K — unusually heavy trading.
- Price is -8.6% vs its 50-day average ($9.79) and -12.4% vs its 200-day average ($10.22).
- 52-week range $8.70–$10.77; today's close sits at 12% of that range, 16.9% below the 52-week high.
NMZ latest news & SEC filings
Every SEC filing by or about NMZ in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 2, 2026 · Form 424B3 — Prospectus / supplement for an offering or resale
Prospectus / supplement for an offering or resale
An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.
Sep 25, 2026 · Form NPORT-P — NPORT-P filing
NPORT-P filing
Sep 3, 2026 · Form 3 — New insider holdings
Initial insider ownership statement (Form 3) — a new director, officer or 10% owner disclosed their holdings
Sep 3, 2026 · Form 3 — New insider holdings
Initial insider ownership statement (Form 3) — a new director, officer or 10% owner disclosed their holdings
Sep 1, 2026 · Form 3 — New insider holdings
Initial insider ownership statement (Form 3) — a new director, officer or 10% owner disclosed their holdings
Aug 17, 2026 · Form N-PX — Annual proxy voting record
Annual proxy voting record
Aug 6, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Merrill Lynch, Pierce, Fenner & Smith Inc. bought 1 shares at $10.19 (≈$10) on Aug 4, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. sold 1 shares at $10.23 (≈$10) on Aug 4, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. bought 1 shares at $10.19 (≈$10) on Aug 4, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. bought 1 shares at $10.18 (≈$10) on Aug 4, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. sold 1 shares at $10.24 (≈$10) on Aug 4, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. sold 1 shares at $10.32 (≈$10) on Aug 4, 2026
- …plus 6 more transaction lines in the filing.
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 4, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Merrill Lynch, Pierce, Fenner & Smith Inc. bought 5 shares at $10.22 (≈$51) on Aug 3, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. sold 7 shares at $10.32 (≈$72) on Aug 3, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. sold 14 shares at $10.24 (≈$143) on Aug 3, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. bought 10 shares at $10.21 (≈$102) on Aug 3, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. bought 7 shares at $10.20 (≈$71) on Aug 3, 2026
- Merrill Lynch, Pierce, Fenner & Smith Inc. sold 10 shares at $10.23 (≈$102) on Aug 3, 2026
- …plus 7 more transaction lines in the filing.
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Jul 28, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Jul 16, 2026 · Form 40-17G — 40-17G filing
40-17G filing
Jul 2, 2026 · Form DEF 14A — Proxy statement
Proxy statement — agenda for the shareholder meeting (board elections, executive pay, votes)
Jun 24, 2026 · Form NPORT-P — NPORT-P filing
NPORT-P filing
Things to know before you trade NMZ
- How much it moves: over the last 20 sessions the average daily move was 1.14% (largest 2.8%).
- Liquidity: about 1.60M shares (≈$14.56M) trade per day on average.
- 52-week position: $9.11 vs a range of $8.69–$10.77 (20% of the range).
- Dividends: last ex-dividend date Oct 15, 2026 ($0.066/share); 12 payments in the past 12 months.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 13 open-market buys, 12 sales; latest: Lynch, Pierce, Fenner & Smith Inc. Merrill bought 1 shares on Aug 4, 2026.
- Latest filings: 8-K Mar 6, 2024; 8-K Oct 13, 2023; 8-K Feb 25, 2022.
- Listing: NYSE · industry: —.
NMZ market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 15, 2026 | 8.99 | 9.11 | 8.95 | 9.11 | 959.40K |
| Oct 14, 2026 | 9.01 | 9.03 | 8.94 | 8.94 | 965.80K |
| Oct 13, 2026 | 9.01 | 9.11 | 8.95 | 9.07 | 1.13M |
| Oct 12, 2026 | 9.08 | 9.08 | 8.95 | 9.01 | 954.30K |
| Oct 9, 2026 | 9.04 | 9.13 | 8.98 | 9.09 | 2.78M |
| Oct 8, 2026 | 8.99 | 9.06 | 8.92 | 9.03 | 1.57M |
| Oct 7, 2026 | 8.79 | 9.03 | 8.69 | 8.96 | 2.76M |
| Oct 6, 2026 | 8.79 | 8.94 | 8.76 | 8.94 | 1.44M |
| Oct 5, 2026 | 8.90 | 8.90 | 8.73 | 8.76 | 2.05M |
| Oct 2, 2026 | 8.97 | 9.09 | 8.89 | 8.95 | 1.81M |
| Oct 1, 2026 | 9.05 | 9.09 | 8.86 | 8.90 | 2.30M |
| Sep 30, 2026 | 8.94 | 9.04 | 8.91 | 8.96 | 1.43M |
| Sep 29, 2026 | 8.77 | 8.88 | 8.70 | 8.85 | 1.82M |
| Sep 28, 2026 | 8.99 | 8.99 | 8.73 | 8.77 | 2.20M |
| Sep 25, 2026 | 9.10 | 9.15 | 9.00 | 9.02 | 1.18M |
| Sep 24, 2026 | 9.06 | 9.23 | 9.00 | 9.09 | 1.90M |
| Sep 23, 2026 | 9.26 | 9.30 | 9.06 | 9.08 | 1.66M |
| Sep 22, 2026 | 9.31 | 9.44 | 9.31 | 9.33 | 1.03M |
| Sep 21, 2026 | 9.40 | 9.42 | 9.31 | 9.32 | 1.14M |
| Sep 18, 2026 | 9.48 | 9.52 | 9.34 | 9.43 | 907.40K |
About Nuveen Municipal High Income Opportunity Fund
Nuveen Municipal High Income Opportunity Fund (NMZ) is listed on the NYSE and classified by the SEC under “—”. Its business address is in CHICAGO, IL. State of incorporation: MA. Fiscal year ends —. SEC CIK 1266585.
NMZ board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| No Form 3/4/5 filings by this group in the last 12 months. | ||
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Joseph Castro | EVP, Chief Risk & Compliance | Feb 23, 2026 |
| Robert Tanner Page | VP and Treasurer | Nov 5, 2025 |
| William A Siffermann | Vice President | Mar 6, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 4, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Buy | 1 | $10.19 |
| Aug 4, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Sale | 1 | $10.23 |
| Aug 4, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Buy | 1 | $10.19 |
| Aug 4, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Buy | 1 | $10.18 |
| Aug 4, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Sale | 1 | $10.24 |
| Aug 4, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Sale | 1 | $10.32 |
| Aug 4, 2026 | Of America Corp /De/ Bank | Buy | 1 | $10.19 |
| Aug 4, 2026 | Of America Corp /De/ Bank | Sale | 1 | $10.23 |
| Aug 4, 2026 | Of America Corp /De/ Bank | Buy | 1 | $10.19 |
| Aug 4, 2026 | Of America Corp /De/ Bank | Buy | 1 | $10.18 |
| Aug 4, 2026 | Of America Corp /De/ Bank | Sale | 1 | $10.24 |
| Aug 4, 2026 | Of America Corp /De/ Bank | Sale | 1 | $10.32 |
| Aug 3, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Buy | 5 | $10.22 |
| Aug 3, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Sale | 7 | $10.32 |
| Aug 3, 2026 | Lynch, Pierce, Fenner & Smith Inc. Merrill | Sale | 14 | $10.24 |
NMZ financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| No annual XBRL figures available (foreign filers often report on Form 20-F). | ||||
Latest balance sheet: total assets $—, total liabilities $—, cash $—.
NMZ earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| No 8-K earnings releases in recent filings. | ||
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 15, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.