STMSX Performance — SIMT Tax-Managed Small/Mid Cap Fund, Class F
Data updated: 2026-08-28
STMSX returned +17.48% year to date and +28.18% over one year to Jun 2026. Annualised returns are +15.75% over 3 years and +7.48% over 5 years. The fund beat its US Multi-Cap Blend category average: $100 invested three years ago grew to $155, against $143 for the category, and to $128 over one year, against $116. Volatility over the past three years was 17.00% a year. In the 12 months to Jun 2026 the fund took in a net $27.3M, and assets reached $768.85M.
STMSX Growth of $100
What $100 invested in SIMT Tax-Managed Small/Mid Cap Fund 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 | STMSX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $128 | $116 |
| 3 years (Jul 2023 – Jun 2026) | $155 | $143 |
| 5 years (Jul 2021 – Jun 2026) | $143 | $136 |
| Since data start (Jul 2019 – Jun 2026) | $195 | $173 |
STMSX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +17.48% |
| 1 year | +28.18% |
| 3 years (annualised) | +15.75% |
| 5 years (annualised) | +7.48% |
STMSX Annual Returns
Calendar-year total returns of SIMT Tax-Managed Small/Mid Cap Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +17.48% |
| 2025 | +8.66% |
| 2024 | +13.70% |
| 2023 | +12.92% |
| 2022 | −16.89% |
| 2021 | +23.51% |
| 2020 | +10.24% |
| 2019 (Jul–Dec) | +5.37% |
STMSX 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 | −5.4% | +1.6% | +4.0% | +4.7% | +0.6% | +11.6% | — | — | — | — | — | — |
| 2025 | −5.4% | −4.4% | +3.1% | +3.8% | +5.0% | −2.0% | +0.9% | +6.3% | +0.4% | +0.7% | +2.2% | −1.5% |
| 2024 | +4.3% | +4.8% | −1.1% | −1.1% | +4.6% | −5.2% | +0.3% | −0.6% | +7.8% | −8.3% | +10.3% | −1.4% |
| 2023 | −4.4% | −1.5% | +7.7% | +8.1% | −1.8% | −1.8% | −4.8% | −3.4% | +3.9% | +9.4% | +7.7% | −5.1% |
| 2022 | −0.1% | +0.7% | −7.2% | −8.4% | +1.5% | −7.8% | −9.0% | −3.7% | +8.7% | −6.0% | +4.9% | +10.7% |
| 2021 | +3.2% | +7.3% | +2.1% | −1.2% | +1.3% | +3.6% | −2.4% | +1.7% | −0.3% | +5.2% | −2.7% | +4.0% |
| 2020 | −22.0% | −9.1% | −2.3% | +1.8% | +5.1% | +14.4% | −3.8% | +3.5% | +5.0% | +6.8% | +15.2% | +1.2% |
| 2019 | — | — | — | — | — | — | +1.0% | −3.6% | +1.4% | +2.0% | +3.4% | +1.1% |
STMSX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 17.00%
- 3-year Sharpe ratio: 0.66 (vs 4.5% risk-free rate)
- Best month: +11.63% (Jun 2026)
- Worst month: −8.25% (Oct 2024)
STMSX Fund Flows
Monthly money in and out of SIMT Tax-Managed Small/Mid Cap Fund, from SEC Form N-PORT.
- 12-month net flow: $27.3M
- 12-month gross sales (incl. reinvestments): $207.7M
- Sales ÷ redemptions: 1.15×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $33.6M | $45.4M | −$11.9M |
| May 2026 | $1.4M | $5.3M | −$3.9M |
| Apr 2026 | $1.5M | $6.0M | −$4.5M |
| Mar 2026 | $2.9M | $7.7M | −$4.8M |
| Feb 2026 | $8.6M | $13.3M | −$4.7M |
| Jan 2026 | $92.1M | $27.0M | $65.1M |
| Dec 2025 | $3.5M | $6.9M | −$3.4M |
| Nov 2025 | $2.5M | $6.0M | −$3.6M |
| Oct 2025 | $24.5M | $9.7M | $14.9M |
| Sep 2025 | $3.8M | $8.0M | −$4.1M |
| Aug 2025 | $31.8M | $37.4M | −$5.6M |
| Jul 2025 | $1.5M | $7.7M | −$6.2M |
STMSX Assets Under Management
Net assets of SIMT Tax-Managed Small/Mid Cap Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $768.85M |
| 2026-03-31 | $672.97M |
| 2025-12-31 | $687.02M |
| 2025-09-30 | $697.10M |
| 2025-06-30 | $664.29M |
| 2025-03-31 | $652.32M |
| 2024-12-31 | $719.36M |
| 2024-09-30 | $887.71M |
| 2024-06-30 | $842.56M |
| 2024-03-31 | $880.40M |
| 2023-12-31 | $832.54M |
| 2023-09-30 | $773.21M |
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.