NMB Performance — Simplify National Muni Bond ETF
Data updated: 2026-09-11
NMB returned +2.55% year to date and +5.69% over one year to Jun 2026. Over one year the fund trailed its Long-Term Municipal Bond category average: $100 grew to $106, against $108 for the category. Volatility over the past 12 months was 7.98% a year. In the 12 months to Jun 2026 the fund lost a net $24.7M, and assets reached $48.67M.
NMB Growth of $100
What $100 invested in Simplify National Muni Bond ETF grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Long-Term Municipal Bond category average over the same months.
| Period | NMB | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $106 | $108 |
| Since data start (Sep 2024 – Jun 2026) | $109 | $106 |
NMB Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +2.55% |
| 1 year | +5.69% |
NMB Annual Returns
Calendar-year total returns of Simplify National Muni Bond ETF, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +2.55% |
| 2025 | +7.65% |
| 2024 (Sep–Dec) | −1.57% |
NMB Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | −0.5% | +0.8% | −2.1% | +1.7% | +1.2% | +1.5% | — | — | — | — | — | — |
| 2025 | +1.1% | −2.3% | −4.4% | +8.7% | +0.3% | +1.6% | −3.6% | +1.0% | +5.5% | +2.0% | −0.7% | −1.0% |
| 2024 | — | — | — | — | — | — | — | — | +0.9% | −1.8% | +3.4% | −4.0% |
NMB Risk
Risk measures from monthly returns over Jul 2025 – Jun 2026.
- 1-year volatility (annualised): 7.98%
- Best month: +5.49% (Sep 2025)
- Worst month: −3.56% (Jul 2025)
NMB Fund Flows
Monthly money in and out of Simplify National Muni Bond ETF, from SEC Form N-PORT.
- 12-month net flow: −$24.7M
- 12-month gross sales (incl. reinvestments): $8.0M
- Sales ÷ redemptions: 0.24×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $618K | $618K | $137 |
| May 2026 | $1.2M | $0 | $1.2M |
| Apr 2026 | $616K | $0 | $616K |
| Mar 2026 | $611K | $612K | −$878 |
| Feb 2026 | $0 | $0 | $0 |
| Jan 2026 | $627K | $0 | $627K |
| Dec 2025 | $0 | $2.5M | −$2.5M |
| Nov 2025 | $642K | $0 | $642K |
| Oct 2025 | $0 | $0 | $0 |
| Sep 2025 | $639K | $641K | −$2K |
| Aug 2025 | $1.8M | $13.3M | −$11.5M |
| Jul 2025 | $1.2M | $15.1M | −$13.8M |
NMB Assets Under Management
Net assets of Simplify National Muni Bond ETF by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $48.67M |
| 2026-03-31 | $45.30M |
| 2025-12-31 | $46.28M |
| 2025-09-30 | $48.59M |
| 2025-06-30 | $73.96M |
| 2025-03-31 | $85.71M |
| 2024-12-31 | $91.86M |
| 2024-09-30 | $95.27M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.