MBNCX Performance — MFS North Carolina Municipal Bond Fund, Class B
Data updated: 2026-08-25
MBNCX returned +2.50% year to date and +7.14% over one year to Jun 2026. Annualised returns are +3.16% over 3 years and +0.06% over 5 years. The fund trailed its Long-Term Municipal Bond category average: $100 invested three years ago grew to $110, against $112 for the category, and to $107 over one year, against $108. Volatility over the past three years was 6.33% a year. In the 12 months to Jun 2026 the fund took in a net $91.0M, and assets reached $577.63M.
MBNCX Growth of $100
What $100 invested in MFS North Carolina Municipal Bond Fund 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 | MBNCX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $107 | $108 |
| 3 years (Jul 2023 – Jun 2026) | $110 | $112 |
| 5 years (Jul 2021 – Jun 2026) | $100 | $103 |
| Since data start (Jul 2019 – Jun 2026) | $107 | $113 |
MBNCX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +2.50% |
| 1 year | +7.14% |
| 3 years (annualised) | +3.16% |
| 5 years (annualised) | +0.06% |
MBNCX Annual Returns
Calendar-year total returns of MFS North Carolina Municipal Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +2.50% |
| 2025 | +2.52% |
| 2024 | +1.52% |
| 2023 | +4.99% |
| 2022 | −10.43% |
| 2021 | +1.49% |
| 2020 | +2.96% |
| 2019 (Jul–Dec) | +1.63% |
MBNCX 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% | +1.5% | −2.3% | +1.3% | +0.5% | +1.0% | — | — | — | — | — | — |
| 2025 | +0.3% | +0.9% | −2.0% | −0.8% | −0.8% | +0.5% | −0.9% | +0.8% | +3.0% | +1.4% | +0.2% | 0.0% |
| 2024 | −0.1% | −0.1% | 0.0% | −1.2% | −0.1% | +2.0% | +0.8% | +0.7% | +1.1% | −1.5% | +1.6% | −1.6% |
| 2023 | +3.2% | −2.6% | +1.9% | 0.0% | −0.8% | +0.4% | +0.1% | −1.4% | −3.2% | −2.0% | +7.1% | +2.6% |
| 2022 | −2.6% | −0.6% | −3.0% | −2.8% | +1.3% | −2.3% | +2.7% | −2.7% | −4.6% | −1.1% | +5.4% | −0.1% |
| 2021 | +0.7% | −1.2% | +0.4% | +0.9% | +0.4% | +0.2% | +0.8% | −0.4% | −0.9% | −0.3% | +0.8% | +0.1% |
| 2020 | +1.7% | +1.2% | −5.4% | −2.1% | +3.1% | +1.4% | +1.7% | −0.4% | 0.0% | −0.3% | +1.7% | +0.6% |
| 2019 | — | — | — | — | — | — | +0.5% | +1.5% | −0.7% | −0.1% | +0.1% | +0.2% |
MBNCX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 6.33%
- 3-year Sharpe ratio: -0.21 (vs 4.5% risk-free rate)
- Best month: +7.14% (Nov 2023)
- Worst month: −3.24% (Sep 2023)
MBNCX Fund Flows
Monthly money in and out of MFS North Carolina Municipal Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $91.0M
- 12-month gross sales (incl. reinvestments): $208.0M
- Sales ÷ redemptions: 1.78×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $14.4M | $9.2M | $5.2M |
| May 2026 | $17.8M | $9.3M | $8.6M |
| Apr 2026 | $15.8M | $11.0M | $4.8M |
| Mar 2026 | $21.7M | $12.4M | $9.4M |
| Feb 2026 | $12.3M | $7.1M | $5.2M |
| Jan 2026 | $15.3M | $7.3M | $8.0M |
| Dec 2025 | $16.3M | $10.6M | $5.7M |
| Nov 2025 | $13.5M | $8.3M | $5.2M |
| Oct 2025 | $11.9M | $10.5M | $1.4M |
| Sep 2025 | $13.2M | $8.8M | $4.3M |
| Aug 2025 | $34.3M | $10.4M | $23.8M |
| Jul 2025 | $21.4M | $11.9M | $9.5M |
MBNCX Assets Under Management
Net assets of MFS North Carolina Municipal Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $577.63M |
| 2026-03-31 | $546.59M |
| 2025-12-31 | $529.64M |
| 2025-09-30 | $512.52M |
| 2025-06-30 | $463.90M |
| 2025-03-31 | $448.58M |
| 2024-12-31 | $456.18M |
| 2024-09-30 | $466.48M |
| 2024-06-30 | $442.25M |
| 2024-03-31 | $450.66M |
| 2023-12-31 | $449.64M |
| 2023-09-30 | $432.94M |
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.