NSIOX — Nuveen Strategic Municipal Opportunities Fund
Data updated: 2026-08-27
NSIOX — Nuveen Strategic Municipal Opportunities Fund. Long Municipal - National Bond · $1.13B AUM. Holdings, fees, performance and SEC filings.
NSIOX Fund Overview
NSIOX — Nuveen Strategic Municipal Opportunities Fund is a US mutual fund managed by Nuveen Municipal Trust/ma, categorised as Long Municipal - National Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Nuveen Municipal Trust/ma
- Category: Long Municipal - National Bond
- Assets under management: $1.13B
- 1-year return: 6.7%
- Ticker: NSIOX
- SEC CIK: 0001020660
- SEC series ID: S000047609
- Share class ID: C000149457
NSIOX Holdings
Top 10 holdings of Nuveen Strategic Municipal Opportunities Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Florida Development Finance Corporation, Revenue Bonds, Brightline Florida Passenger Rail Expansion Project, Series 2025B | 1.17% |
| Massachusetts Development Finance Agency, Revenue Bonds, UMass Memorial Health Care Obligated Group Issue, Series 2025N-2 | 1.13% |
| Boys Town Village, Nebraska, Revenue Bonds, Boys Town Project Series 2026 | 1.11% |
| Arkansas Development Finance Authority, Arkansas, Environmental Improvement Revenue Bonds, United States Steel Corporation Project, Series 2026A | 1.06% |
| Black Belt Energy Gas District, Alabama, Gas Project Revenue Bonds, Series 2025A | 0.93% |
| Arkansas Development Finance Authority, Arkansas, Environmental Improvement Revenue Bonds, United States Steel Corporation Project, Series 2026B | 0.90% |
| Michigan Finance Authority, Hospital Revenue Bonds, Henry Ford Health System, Refunding Series 2016 | 0.89% |
| Puerto Rico, GDB Debt Recovery Authority Commonwealth Bonds, Taxable Series 2018 | 0.86% |
| Clark County School District, Nevada, General Obligation Bonds, Refunding Limited Tax Building Series 2026A | 0.85% |
| Painted Prairie Public Improvement Authority, Aurora, Colorado, Special Revenue Bonds, Series 2019 | 0.79% |
NSIOX Portfolio Allocation
Asset-class allocation of Nuveen Strategic Municipal Opportunities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 102.7% |
NSIOX Performance
Total returns for NSIOX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 2.8% |
| 1 year | 6.7% |
| 3 years (annualised) | 4.9% |
| 5 years (annualised) | 0.8% |
NSIOX Risk Information
Risk metrics for NSIOX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 4.2%
NSIOX Costs and Fees
NSIOX costs about $65 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.65%
- Gross expense ratio: 0.65%
- Portfolio turnover: 60%
- Brokerage commissions: 0.02 bps of average net assets (SEC N-CEN)
NSIOX Cashflows
Over the 12 months to 2026-06, Nuveen Strategic Municipal Opportunities Fund had net inflows of $37.31M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$999.41K |
| 2026-05 | −$132.89K |
| 2026-04 | −$299.55K |
| 2026-03 | $4.87M |
| 2026-02 | $7.09M |
| 2026-01 | $1.12M |
NSIOX Debt Constituents
Largest debt holdings of Nuveen Strategic Municipal Opportunities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Florida Development Finance Corporation, Revenue Bonds, Brightline Florida Passenger Rail Expansion Project, Series 2025B | 1.17% |
| Massachusetts Development Finance Agency, Revenue Bonds, UMass Memorial Health Care Obligated Group Issue, Series 2025N-2 | 1.13% |
| Boys Town Village, Nebraska, Revenue Bonds, Boys Town Project Series 2026 | 1.11% |
| Arkansas Development Finance Authority, Arkansas, Environmental Improvement Revenue Bonds, United States Steel Corporation Project, Series 2026A | 1.06% |
| Black Belt Energy Gas District, Alabama, Gas Project Revenue Bonds, Series 2025A | 0.93% |
| Arkansas Development Finance Authority, Arkansas, Environmental Improvement Revenue Bonds, United States Steel Corporation Project, Series 2026B | 0.90% |
| Michigan Finance Authority, Hospital Revenue Bonds, Henry Ford Health System, Refunding Series 2016 | 0.89% |
| Puerto Rico, GDB Debt Recovery Authority Commonwealth Bonds, Taxable Series 2018 | 0.86% |
| Clark County School District, Nevada, General Obligation Bonds, Refunding Limited Tax Building Series 2026A | 0.85% |
| Painted Prairie Public Improvement Authority, Aurora, Colorado, Special Revenue Bonds, Series 2019 | 0.79% |
NSIOX Prospectus and SEC Filings
Official Nuveen Strategic Municipal Opportunities Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-07-29
- Prospectus (485BPOS) — filed 2025-07-29
- Prospectus (485BPOS) — filed 2024-07-29
- Portfolio holdings (N-PORT) — filed 2026-08-27
- Portfolio holdings (N-PORT) — filed 2026-05-28
- Portfolio holdings (N-PORT) — filed 2026-02-26
- Annual census (N-CEN) — filed 2026-06-12
- Annual census (N-CEN) — filed 2025-06-13
Related Funds
Other Long Municipal - National Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.