SIMSX Performance — MFS Conservative Allocation Portfolio, Service Class
Data updated: 2026-08-24
SIMSX returned +3.25% year to date and +6.34% over one year to Jun 2026. Annualised returns are +7.80% over 3 years and +2.71% over 5 years. The fund trailed its US Multi-Cap Blend category average: $100 invested three years ago grew to $125, against $143 for the category, and to $106 over one year, against $116. Volatility over the past three years was 7.13% a year. In the 12 months to Jun 2026 the fund lost a net $24.3M, and assets reached $214.20M.
SIMSX Growth of $100
What $100 invested in MFS Conservative Allocation Portfolio grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Multi-Cap Blend category average over the same months.
| Period | SIMSX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $106 | $116 |
| 3 years (Jul 2023 – Jun 2026) | $125 | $143 |
| 5 years (Jul 2021 – Jun 2026) | $114 | $136 |
| Since data start (Jul 2019 – Jun 2026) | $139 | $173 |
SIMSX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +3.25% |
| 1 year | +6.34% |
| 3 years (annualised) | +7.80% |
| 5 years (annualised) | +2.71% |
SIMSX Annual Returns
Calendar-year total returns of MFS Conservative Allocation Portfolio, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +3.25% |
| 2025 | +9.72% |
| 2024 | +5.64% |
| 2023 | +10.04% |
| 2022 | −15.52% |
| 2021 | +6.70% |
| 2020 | +12.06% |
| 2019 (Jul–Dec) | +4.48% |
SIMSX 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 | +1.3% | +1.3% | −3.8% | +3.2% | +0.8% | +0.5% | — | — | — | — | — | — |
| 2025 | +2.0% | +0.5% | −1.4% | +0.9% | +1.9% | +2.5% | −0.3% | +1.5% | +0.9% | +0.1% | +0.6% | +0.1% |
| 2024 | −0.2% | +1.3% | +1.8% | −2.9% | +2.5% | +0.5% | +2.4% | +1.9% | +1.2% | −2.1% | +2.2% | −2.7% |
| 2023 | +4.4% | −2.8% | +2.3% | +0.7% | −1.5% | +2.1% | +1.1% | −1.3% | −3.4% | −1.6% | +5.8% | +4.2% |
| 2022 | −3.8% | −1.6% | −1.0% | −5.1% | 0.0% | −4.7% | +4.7% | −3.7% | −6.0% | +2.2% | +5.1% | −2.0% |
| 2021 | −1.0% | +0.1% | +0.8% | +2.5% | +0.8% | +0.6% | +1.6% | +0.9% | −2.4% | +2.1% | −0.8% | +1.4% |
| 2020 | +1.1% | −2.3% | −7.1% | +5.6% | +3.0% | +1.5% | +3.5% | +1.8% | −1.1% | −0.9% | +4.8% | +2.2% |
| 2019 | — | — | — | — | — | — | +0.3% | +1.1% | +0.1% | +0.8% | +0.9% | +1.1% |
SIMSX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 7.13%
- 3-year Sharpe ratio: 0.46 (vs 4.5% risk-free rate)
- Best month: +5.76% (Nov 2023)
- Worst month: −3.75% (Mar 2026)
SIMSX Fund Flows
Monthly money in and out of MFS Conservative Allocation Portfolio, from SEC Form N-PORT.
- 12-month net flow: −$24.3M
- 12-month gross sales (incl. reinvestments): $20.1M
- Sales ÷ redemptions: 0.45×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $261K | $3.0M | −$2.8M |
| May 2026 | $203K | $3.9M | −$3.7M |
| Apr 2026 | $40K | $2.3M | −$2.2M |
| Mar 2026 | $702K | $4.3M | −$3.6M |
| Feb 2026 | $38K | $4.3M | −$4.2M |
| Jan 2026 | $305K | $3.2M | −$2.9M |
| Dec 2025 | $694K | $4.5M | −$3.8M |
| Nov 2025 | $472K | $3.6M | −$3.1M |
| Oct 2025 | $145K | $4.2M | −$4.0M |
| Sep 2025 | $629K | $4.0M | −$3.3M |
| Aug 2025 | $16.6M | $4.1M | $12.5M |
| Jul 2025 | $74K | $3.2M | −$3.1M |
SIMSX Assets Under Management
Net assets of MFS Conservative Allocation Portfolio by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $214.20M |
| 2026-03-31 | $213.41M |
| 2025-12-31 | $226.63M |
| 2025-09-30 | $235.67M |
| 2025-06-30 | $241.02M |
| 2025-03-31 | $239.67M |
| 2024-12-31 | $249.42M |
| 2024-09-30 | $269.11M |
| 2024-06-30 | $265.94M |
| 2024-03-31 | $278.04M |
| 2023-12-31 | $281.32M |
| 2023-09-30 | $273.69M |
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.