SPMIX Performance — S&P MidCap Index Fund, Investor Shares
Data updated: 2026-07-30
SPMIX returned +12.77% year to date and +24.96% over one year to May 2026. Annualised returns are +16.61% over 3 years and +7.43% over 5 years. The fund beat its US Mid-Cap Blend category average: $100 invested three years ago grew to $159, against $156 for the category, and to $125 over one year, against $122. Volatility over the past three years was 16.41% a year. In the 12 months to May 2026 the fund lost a net $5.8M, and assets reached $115.69M.
SPMIX Growth of $100
What $100 invested in S&P MidCap Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Mid-Cap Blend category average over the same months.
| Period | SPMIX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $125 | $122 |
| 3 years (Jun 2023 – May 2026) | $159 | $156 |
| 5 years (Jun 2021 – May 2026) | $143 | $143 |
| Since data start (Sep 2019 – May 2026) | $213 | $204 |
SPMIX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +12.77% |
| 1 year | +24.96% |
| 3 years (annualised) | +16.61% |
| 5 years (annualised) | +7.43% |
SPMIX Annual Returns
Calendar-year total returns of S&P MidCap Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +12.77% |
| 2025 | +3.80% |
| 2024 | +19.59% |
| 2023 | +8.37% |
| 2022 | −6.45% |
| 2021 | +19.16% |
| 2020 | +29.42% |
| 2019 (Sep–Dec) | −2.65% |
SPMIX 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 | +4.0% | +4.1% | −5.5% | +7.6% | +2.4% | — | — | — | — | — | — | — |
| 2025 | +3.8% | −7.1% | +5.3% | −2.3% | −5.6% | +3.3% | +1.6% | +3.5% | +2.1% | −0.4% | +0.4% | 0.0% |
| 2024 | −1.7% | +8.6% | +4.5% | −6.2% | +5.6% | −0.2% | +5.7% | −1.6% | +8.7% | −0.9% | +1.1% | −4.3% |
| 2023 | +9.1% | −5.6% | −3.2% | −0.8% | −3.3% | −2.8% | +4.1% | +9.2% | +8.4% | −5.5% | −5.3% | +5.8% |
| 2022 | −7.2% | +5.0% | +0.7% | −7.1% | +1.2% | −3.2% | +10.8% | −9.7% | +6.0% | +10.5% | −9.0% | −1.8% |
| 2021 | +1.4% | +6.5% | +0.2% | +4.5% | +4.6% | +1.8% | +0.3% | −1.1% | −2.7% | +5.6% | −4.0% | +1.1% |
| 2020 | −2.7% | +2.8% | +7.2% | +14.3% | −20.1% | +3.5% | +4.5% | +1.1% | +14.2% | +2.6% | −3.3% | +6.8% |
| 2019 | — | — | — | — | — | — | — | — | +3.0% | +1.3% | +3.1% | −9.5% |
SPMIX Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 16.41%
- 3-year Sharpe ratio: 0.74 (vs 4.5% risk-free rate)
- Best month: +9.19% (Aug 2023)
- Worst month: −7.13% (Feb 2025)
SPMIX Fund Flows
Monthly money in and out of S&P MidCap Index Fund, from SEC Form N-PORT.
- 12-month net flow: −$5.8M
- 12-month gross sales (incl. reinvestments): $6.4M
- Sales ÷ redemptions: 0.53×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $753K | $1.7M | −$916K |
| Apr 2026 | $1.1M | $2.3M | −$1.2M |
| Mar 2026 | $735K | $1.2M | −$473K |
| Feb 2026 | $892K | $2.0M | −$1.1M |
| Jan 2026 | $948K | $1.1M | −$139K |
| Dec 2025 | $909K | $1.4M | −$520K |
| Nov 2025 | $0 | $0 | $0 |
| Oct 2025 | $0 | $0 | $0 |
| Sep 2025 | $871K | $1.4M | −$492K |
| Aug 2025 | $0 | $0 | $0 |
| Jul 2025 | $0 | $0 | $0 |
| Jun 2025 | $218K | $1.2M | −$969K |
SPMIX Assets Under Management
Net assets of S&P MidCap Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $115.69M |
| 2026-02-28 | $113.69M |
| 2025-11-30 | $102.61M |
| 2025-08-31 | $108.11M |
| 2025-05-31 | $101.08M |
| 2025-02-28 | $110.66M |
| 2024-11-30 | $109.95M |
| 2024-08-31 | $111.86M |
| 2024-05-31 | $110.47M |
| 2024-02-29 | $110.66M |
| 2023-11-30 | $96.34M |
| 2023-08-31 | $108.74M |
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.