MBSCX Performance — MFS South Carolina Municipal Bond Fund, Class B
Data updated: 2026-08-25
MBSCX returned +2.54% year to date and +7.08% over one year to Jun 2026. Annualised returns are +3.15% over 3 years and −0.13% 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 6.59% a year. In the 12 months to Jun 2026 the fund took in a net $29.3M, and assets reached $256.30M.
MBSCX Growth of $100
What $100 invested in MFS South 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 | MBSCX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $107 | $108 |
| 3 years (Jul 2023 – Jun 2026) | $110 | $112 |
| 5 years (Jul 2021 – Jun 2026) | $99 | $103 |
| Since data start (Jul 2019 – Jun 2026) | $105 | $113 |
MBSCX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +2.54% |
| 1 year | +7.08% |
| 3 years (annualised) | +3.15% |
| 5 years (annualised) | −0.13% |
MBSCX Annual Returns
Calendar-year total returns of MFS South Carolina Municipal Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +2.54% |
| 2025 | +2.33% |
| 2024 | +1.45% |
| 2023 | +5.37% |
| 2022 | −11.33% |
| 2021 | +1.02% |
| 2020 | +3.29% |
| 2019 (Jul–Dec) | +1.46% |
MBSCX 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% | +1.6% | −2.4% | +1.3% | +0.5% | +1.0% | — | — | — | — | — | — |
| 2025 | +0.1% | +0.9% | −1.9% | −0.9% | −0.8% | +0.6% | −1.1% | +0.8% | +3.2% | +1.4% | +0.2% | −0.2% |
| 2024 | −0.1% | −0.1% | 0.0% | −1.3% | −0.1% | +2.0% | +0.8% | +0.5% | +1.1% | −1.6% | +1.6% | −1.5% |
| 2023 | +3.4% | −2.8% | +2.1% | 0.0% | −0.8% | +0.4% | +0.2% | −1.6% | −3.5% | −1.9% | +7.5% | +2.8% |
| 2022 | −2.6% | −0.6% | −3.2% | −2.9% | +1.1% | −2.4% | +2.8% | −2.9% | −4.8% | −1.2% | +5.4% | −0.3% |
| 2021 | +0.7% | −1.5% | +0.5% | +0.7% | +0.5% | +0.3% | +0.6% | −0.4% | −0.8% | −0.3% | +0.8% | +0.1% |
| 2020 | +1.8% | +1.3% | −4.5% | −2.0% | +2.7% | +1.2% | +1.6% | −0.3% | −0.1% | −0.2% | +1.4% | +0.6% |
| 2019 | — | — | — | — | — | — | +0.5% | +1.5% | −0.7% | −0.1% | +0.1% | +0.1% |
MBSCX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 6.59%
- 3-year Sharpe ratio: -0.21 (vs 4.5% risk-free rate)
- Best month: +7.48% (Nov 2023)
- Worst month: −3.52% (Sep 2023)
MBSCX Fund Flows
Monthly money in and out of MFS South Carolina Municipal Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $29.3M
- 12-month gross sales (incl. reinvestments): $82.4M
- Sales ÷ redemptions: 1.55×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $6.7M | $3.5M | $3.2M |
| May 2026 | $7.6M | $2.9M | $4.7M |
| Apr 2026 | $8.8M | $4.3M | $4.5M |
| Mar 2026 | $7.0M | $3.3M | $3.7M |
| Feb 2026 | $8.0M | $2.1M | $5.8M |
| Jan 2026 | $10.1M | $2.7M | $7.4M |
| Dec 2025 | $7.3M | $6.4M | $894K |
| Nov 2025 | $3.9M | $4.2M | −$326K |
| Oct 2025 | $6.8M | $4.1M | $2.7M |
| Sep 2025 | $6.0M | $5.1M | $929K |
| Aug 2025 | $5.5M | $7.8M | −$2.3M |
| Jul 2025 | $4.8M | $6.8M | −$2.0M |
MBSCX Assets Under Management
Net assets of MFS South Carolina Municipal Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $256.30M |
| 2026-03-31 | $238.59M |
| 2025-12-31 | $224.20M |
| 2025-09-30 | $219.26M |
| 2025-06-30 | $217.80M |
| 2025-03-31 | $221.09M |
| 2024-12-31 | $222.70M |
| 2024-09-30 | $223.28M |
| 2024-06-30 | $216.95M |
| 2024-03-31 | $212.74M |
| 2023-12-31 | $208.22M |
| 2023-09-30 | $196.93M |
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.