FLAPX Performance — Fidelity Flex Mid Cap Index Fund
Data updated: 2026-09-23
FLAPX returned +16.54% year to date and +24.98% over one year to Jul 2026. Annualised returns are +16.69% over 3 years and +9.29% over 5 years. The fund beat its US Mid-Cap Blend category average: $100 invested three years ago grew to $159, against $144 for the category, and to $125 over one year, against $119. Volatility over the past three years was 15.36% a year. In the 12 months to Jul 2026 the fund lost a net $50.0M, and assets reached $639.43M.
FLAPX Growth of $100
What $100 invested in Fidelity Flex Mid Cap 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 | FLAPX | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $125 | $119 |
| 3 years (Aug 2023 – Jul 2026) | $159 | $144 |
| 5 years (Aug 2021 – Jul 2026) | $156 | $145 |
| Since data start (Aug 2019 – Jul 2026) | $227 | $204 |
FLAPX Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +16.54% |
| 1 year | +24.98% |
| 3 years (annualised) | +16.69% |
| 5 years (annualised) | +9.29% |
FLAPX Annual Returns
Calendar-year total returns of Fidelity Flex Mid Cap Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | +16.54% |
| 2025 | +14.33% |
| 2024 | +15.29% |
| 2023 | +17.28% |
| 2022 | −17.27% |
| 2021 | +22.57% |
| 2020 | +17.31% |
| 2019 (Aug–Dec) | +6.06% |
FLAPX 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 | +4.2% | +4.0% | −5.3% | +8.9% | +3.0% | +3.0% | −1.6% | — | — | — | — | — |
| 2025 | +4.3% | −2.8% | −4.7% | −1.0% | +5.7% | +3.7% | +1.7% | +3.8% | +1.1% | −0.2% | +2.5% | 0.0% |
| 2024 | −1.4% | +5.5% | +4.4% | −5.4% | +2.8% | −0.7% | +4.7% | +2.1% | +2.2% | −0.5% | +8.8% | −7.1% |
| 2023 | +8.3% | −2.4% | −1.5% | −0.5% | −2.8% | +8.4% | +4.0% | −3.5% | −5.1% | −5.0% | +10.2% | +7.8% |
| 2022 | −7.4% | −0.7% | +2.5% | −7.7% | +0.1% | −9.9% | +9.9% | −3.2% | −9.2% | +8.9% | +6.0% | −5.4% |
| 2021 | −0.3% | +5.6% | +2.7% | +5.1% | +0.8% | +1.5% | +0.8% | +2.5% | −4.1% | +5.9% | −3.5% | +4.1% |
| 2020 | −0.8% | −8.7% | −19.4% | +14.3% | +7.0% | +1.8% | +5.8% | +3.6% | −1.9% | +0.6% | +13.8% | +4.7% |
| 2019 | — | — | — | — | — | — | — | −2.8% | +2.0% | +1.1% | +3.5% | +2.3% |
FLAPX Risk
Risk measures from monthly returns over Aug 2023 – Jul 2026.
- 3-year volatility (annualised): 15.36%
- 3-year Sharpe ratio: 0.79 (vs 4.5% risk-free rate)
- Best month: +10.22% (Nov 2023)
- Worst month: −7.08% (Dec 2024)
FLAPX Fund Flows
Monthly money in and out of Fidelity Flex Mid Cap Index Fund, from SEC Form N-PORT.
- 12-month net flow: −$50.0M
- 12-month gross sales (incl. reinvestments): $390.3M
- Sales ÷ redemptions: 0.89×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $18.7M | $15.6M | $3.0M |
| Jun 2026 | $15.8M | $14.2M | $1.7M |
| May 2026 | $15.4M | $12.9M | $2.5M |
| Apr 2026 | $67.4M | $65.8M | $1.6M |
| Mar 2026 | $20.2M | $14.0M | $6.2M |
| Feb 2026 | $13.0M | $14.9M | −$1.8M |
| Jan 2026 | $22.1M | $16.4M | $5.6M |
| Dec 2025 | $13.9M | $8.3M | $5.6M |
| Nov 2025 | $15.0M | $7.4M | $7.6M |
| Oct 2025 | $15.2M | $19.8M | −$4.7M |
| Sep 2025 | $13.6M | $54.7M | −$41.1M |
| Aug 2025 | $160.2M | $196.3M | −$36.2M |
FLAPX Assets Under Management
Net assets of Fidelity Flex Mid Cap Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $639.43M |
| 2026-04-30 | $605.61M |
| 2026-01-31 | $557.67M |
| 2025-10-31 | $504.29M |
| 2025-07-31 | $559.88M |
| 2025-04-30 | $494.98M |
| 2025-01-31 | $493.21M |
| 2024-10-31 | $458.82M |
| 2024-07-31 | $455.93M |
| 2024-04-30 | $403.80M |
| 2024-01-31 | $368.03M |
| 2023-10-31 | $307.73M |
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.