WFIOX Performance — Allspring Index Fund, Administrator Class
Data updated: 2026-08-26
WFIOX returned +17.50% year to date and +30.25% over one year to Jun 2026. Annualised returns are +22.95% over 3 years and +16.17% over 5 years. The fund beat its US Large Blend category average: $100 invested three years ago grew to $186, against $157 for the category, and to $130 over one year, against $118. Volatility over the past three years was 12.45% a year. In the 12 months to Jun 2026 the fund lost a net $4.6M, and assets reached $1.53B.
WFIOX Growth of $100
What $100 invested in Allspring Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Large Blend category average over the same months.
| Period | WFIOX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $130 | $118 |
| 3 years (Jul 2023 – Jun 2026) | $186 | $157 |
| 5 years (Jul 2021 – Jun 2026) | $212 | $161 |
| Since data start (Sep 2019 – Jun 2026) | $212 | $229 |
WFIOX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +17.50% |
| 1 year | +30.25% |
| 3 years (annualised) | +22.95% |
| 5 years (annualised) | +16.17% |
WFIOX Annual Returns
Calendar-year total returns of Allspring Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +17.50% |
| 2025 | +17.57% |
| 2024 | +24.68% |
| 2023 | +25.97% |
| 2022 | −2.62% |
| 2021 | +0.26% |
| 2020 | +0.20% |
| 2019 (Sep–Dec) | +0.11% |
WFIOX 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 | +1.4% | −0.8% | +1.4% | +10.5% | +5.2% | −1.0% | — | — | — | — | — | — |
| 2025 | +2.8% | −1.3% | −5.7% | −0.7% | +6.3% | +5.1% | +2.2% | +2.0% | +3.6% | +2.3% | +0.2% | 0.0% |
| 2024 | +1.7% | +5.3% | +3.2% | −4.1% | +4.9% | +3.6% | +1.2% | +2.4% | +2.1% | −0.9% | +5.8% | −2.4% |
| 2023 | +6.3% | −2.5% | +3.6% | +1.5% | +0.4% | +6.6% | +3.2% | −1.6% | −4.8% | −2.1% | +9.1% | +4.5% |
| 2022 | −0.1% | 0.0% | 0.0% | −0.1% | 0.0% | −0.1% | +0.1% | 0.0% | −9.2% | +8.1% | +5.6% | −5.8% |
| 2021 | 0.0% | 0.0% | 0.0% | +0.1% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | +0.1% | 0.0% | 0.0% |
| 2020 | 0.0% | −0.1% | −0.1% | +0.1% | 0.0% | 0.0% | +0.1% | +0.1% | 0.0% | 0.0% | +0.1% | 0.0% |
| 2019 | — | — | — | — | — | — | — | — | 0.0% | 0.0% | 0.0% | 0.0% |
WFIOX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 12.45%
- 3-year Sharpe ratio: 1.48 (vs 4.5% risk-free rate)
- Best month: +10.49% (Apr 2026)
- Worst month: −5.66% (Mar 2025)
WFIOX Fund Flows
Monthly money in and out of Allspring Index Fund, from SEC Form N-PORT.
- 12-month net flow: −$4.6M
- 12-month gross sales (incl. reinvestments): $160.4M
- Sales ÷ redemptions: 0.97×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $5.2M | $12.5M | −$7.3M |
| May 2026 | $5.2M | $14.6M | −$9.4M |
| Apr 2026 | $4.1M | $14.4M | −$10.3M |
| Mar 2026 | $4.0M | $13.6M | −$9.6M |
| Feb 2026 | $4.4M | $12.5M | −$8.1M |
| Jan 2026 | $6.0M | $13.7M | −$7.7M |
| Dec 2025 | $107.3M | $17.5M | $89.8M |
| Nov 2025 | $4.2M | $12.1M | −$7.9M |
| Oct 2025 | $4.7M | $13.8M | −$9.1M |
| Sep 2025 | $5.5M | $12.0M | −$6.5M |
| Aug 2025 | $4.7M | $13.5M | −$8.8M |
| Jul 2025 | $5.0M | $14.7M | −$9.7M |
WFIOX Assets Under Management
Net assets of Allspring Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $1.53B |
| 2026-03-31 | $1.36B |
| 2025-12-31 | $1.44B |
| 2025-09-30 | $1.43B |
| 2025-06-30 | $1.35B |
| 2025-03-31 | $1.24B |
| 2024-12-31 | $1.33B |
| 2024-09-30 | $1.33B |
| 2024-06-30 | $1.28B |
| 2024-03-31 | $1.27B |
| 2024-02-29 | $1.24B |
| 2023-11-30 | $1.14B |
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.