SLMMX Performance — Western Asset Massachusetts Municipals Fund, Class A
Data updated: 2026-07-22
SLMMX returned +1.91% year to date and +7.81% over one year to May 2026. Annualised returns are +3.38% over 3 years and +0.09% over 5 years. Against its Long-Term Municipal Bond category average the fund came out behind over three years but ahead over one: $100 invested three years ago grew to $110, against $112 for the category, and to $108 over one year, against $107. Volatility over the past three years was 5.86% a year. In the 12 months to May 2026 the fund lost a net $9.0M, and assets reached $29.18M.
SLMMX Growth of $100
What $100 invested in Western Asset Massachusetts Municipals 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 | SLMMX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $108 | $107 |
| 3 years (Jun 2023 – May 2026) | $110 | $112 |
| 5 years (Jun 2021 – May 2026) | $100 | $103 |
| Since data start (Sep 2019 – May 2026) | $105 | $109 |
SLMMX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +1.91% |
| 1 year | +7.81% |
| 3 years (annualised) | +3.38% |
| 5 years (annualised) | +0.09% |
SLMMX Annual Returns
Calendar-year total returns of Western Asset Massachusetts Municipals Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +1.91% |
| 2025 | +3.05% |
| 2024 | +1.19% |
| 2023 | +5.76% |
| 2022 | −11.27% |
| 2021 | +2.11% |
| 2020 | +3.29% |
| 2019 (Sep–Dec) | −0.37% |
SLMMX 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% | +1.4% | −2.1% | +1.3% | +0.9% | — | — | — | — | — | — | — |
| 2025 | 0.0% | +1.1% | −2.0% | −1.0% | −0.7% | +0.6% | −0.8% | +1.1% | +2.9% | +1.4% | +0.3% | +0.2% |
| 2024 | 0.0% | 0.0% | +0.2% | −1.6% | +0.1% | +1.7% | +0.8% | +0.5% | +1.1% | −1.7% | +1.8% | −1.7% |
| 2023 | +3.1% | −2.6% | +2.2% | −0.1% | −0.7% | +0.5% | +0.1% | −1.1% | −2.5% | −1.9% | +6.3% | +2.7% |
| 2022 | −2.8% | −0.7% | −3.4% | −3.8% | +1.3% | −2.6% | +3.0% | −2.6% | −4.2% | −1.1% | +5.1% | +0.2% |
| 2021 | +0.7% | −1.9% | +0.7% | +1.3% | +0.6% | +0.2% | +0.8% | −0.4% | −0.9% | −0.1% | +0.9% | +0.3% |
| 2020 | +2.1% | +1.2% | −4.4% | −2.6% | +3.2% | +0.9% | +1.6% | −0.3% | −0.1% | −0.2% | +1.4% | +0.6% |
| 2019 | — | — | — | — | — | — | — | — | −0.6% | 0.0% | 0.0% | +0.3% |
SLMMX Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 5.86%
- 3-year Sharpe ratio: -0.19 (vs 4.5% risk-free rate)
- Best month: +6.31% (Nov 2023)
- Worst month: −2.47% (Sep 2023)
SLMMX Fund Flows
Monthly money in and out of Western Asset Massachusetts Municipals Fund, from SEC Form N-PORT.
- 12-month net flow: −$9.0M
- 12-month gross sales (incl. reinvestments): $7.1M
- Sales ÷ redemptions: 0.44×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $334K | $1.5M | −$1.1M |
| Apr 2026 | $224K | $533K | −$309K |
| Mar 2026 | $448K | $105K | $343K |
| Feb 2026 | $237K | $92K | $145K |
| Jan 2026 | $922K | $424K | $498K |
| Dec 2025 | $719K | $5.5M | −$4.8M |
| Nov 2025 | $841K | $511K | $330K |
| Oct 2025 | $407K | $931K | −$525K |
| Sep 2025 | $898K | $1.7M | −$821K |
| Aug 2025 | $369K | $541K | −$172K |
| Jul 2025 | $328K | $3.4M | −$3.0M |
| Jun 2025 | $1.3M | $828K | $508K |
SLMMX Assets Under Management
Net assets of Western Asset Massachusetts Municipals Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-29 | $29.18M |
| 2026-02-27 | $30.45M |
| 2025-11-28 | $34.18M |
| 2025-08-29 | $33.85M |
| 2025-05-30 | $36.52M |
| 2025-02-28 | $43.58M |
| 2024-11-29 | $49.73M |
| 2024-08-30 | $55.91M |
| 2024-05-31 | $54.43M |
| 2024-02-29 | $55.95M |
| 2023-11-30 | $57.73M |
| 2023-08-31 | $60.21M |
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.