ISIPX Performance — Voya U.s. Stock Index Portfolio, Class S2
Data updated: 2026-08-21
ISIPX returned +9.85% year to date and +21.50% over one year to Jun 2026. Annualised returns are +19.81% over 3 years and +12.65% over 5 years. The fund beat its US Large Blend category average: $100 invested three years ago grew to $172, against $157 for the category, and to $122 over one year, against $118. Volatility over the past three years was 13.09% a year. In the 12 months to Jun 2026 the fund lost a net $1.5B, and assets reached $2.98B.
ISIPX Growth of $100
What $100 invested in Voya U.s. Stock Index Portfolio grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Large Blend category average over the same months.
| Period | ISIPX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $122 | $118 |
| 3 years (Jul 2023 – Jun 2026) | $172 | $157 |
| 5 years (Jul 2021 – Jun 2026) | $181 | $161 |
| Since data start (Jul 2019 – Jun 2026) | $240 | $229 |
ISIPX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +9.85% |
| 1 year | +21.50% |
| 3 years (annualised) | +19.81% |
| 5 years (annualised) | +12.65% |
ISIPX Annual Returns
Calendar-year total returns of Voya U.s. Stock Index Portfolio, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +9.85% |
| 2025 | +17.08% |
| 2024 | +24.19% |
| 2023 | +25.38% |
| 2022 | −18.63% |
| 2021 | +27.85% |
| 2020 | +15.13% |
| 2019 (Jul–Dec) | +0.10% |
ISIPX 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% | −5.0% | +10.5% | +5.2% | −1.0% | — | — | — | — | — | — |
| 2025 | +2.7% | −1.4% | −5.7% | −0.7% | +6.2% | +5.1% | +2.2% | +2.0% | +3.5% | +2.3% | +0.2% | 0.0% |
| 2024 | +1.6% | +5.3% | +3.2% | −4.2% | +4.9% | +3.6% | +1.1% | +2.4% | +2.1% | −1.0% | +5.8% | −2.4% |
| 2023 | +6.2% | −2.5% | +3.7% | +1.5% | +0.4% | +6.5% | +3.2% | −1.7% | −4.8% | −2.2% | +9.1% | +4.5% |
| 2022 | −5.2% | −3.1% | +3.7% | −8.8% | +0.2% | −8.3% | +9.2% | −4.2% | −9.2% | +8.0% | +5.5% | −5.8% |
| 2021 | −1.1% | +2.7% | +4.3% | +5.3% | +0.6% | +2.3% | +2.3% | +3.0% | −4.7% | +6.9% | −0.7% | +4.4% |
| 2020 | 0.0% | −0.1% | −0.1% | +0.1% | 0.0% | 0.0% | +0.1% | +0.1% | 0.0% | 0.0% | +10.9% | +3.8% |
| 2019 | — | — | — | — | — | — | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
ISIPX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 13.09%
- 3-year Sharpe ratio: 1.17 (vs 4.5% risk-free rate)
- Best month: +10.47% (Apr 2026)
- Worst month: −5.73% (Mar 2025)
ISIPX Fund Flows
Monthly money in and out of Voya U.s. Stock Index Portfolio, from SEC Form N-PORT.
- 12-month net flow: −$1.5B
- 12-month gross sales (incl. reinvestments): $878.2M
- Sales ÷ redemptions: 0.37×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $18.8M | $43.1M | −$24.3M |
| May 2026 | $46.8M | $32.1M | $14.7M |
| Apr 2026 | $18.4M | $64.6M | −$46.1M |
| Mar 2026 | $74.7M | $21.8M | $52.9M |
| Feb 2026 | $64.9M | $25.0M | $39.9M |
| Jan 2026 | $62.1M | $57.3M | $4.8M |
| Dec 2025 | $66.1M | $46.2M | $19.9M |
| Nov 2025 | $9.6M | $54.6M | −$45.0M |
| Oct 2025 | $13.5M | $29.3M | −$15.8M |
| Sep 2025 | $20.3M | $1.8B | −$1.8B |
| Aug 2025 | $17.2M | $77.5M | −$60.3M |
| Jul 2025 | $465.8M | $146.1M | $319.7M |
ISIPX Assets Under Management
Net assets of Voya U.s. Stock Index Portfolio by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $2.98B |
| 2026-03-31 | $2.64B |
| 2025-12-31 | $2.66B |
| 2025-09-30 | $2.67B |
| 2025-06-30 | $4.35B |
| 2025-03-31 | $3.82B |
| 2024-12-31 | $4.10B |
| 2024-09-30 | $4.33B |
| 2024-06-30 | $4.52B |
| 2024-03-31 | $4.48B |
| 2023-12-31 | $4.26B |
| 2023-09-30 | $4.08B |
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.