ISIIX Performance — Voya International Index Portfolio, Class S2
Data updated: 2026-08-24
ISIIX returned +9.59% year to date and +18.74% over one year to Jun 2026. Annualised returns are +15.47% over 3 years and +8.27% over 5 years. The fund trailed its International Large Blend category average: $100 invested three years ago grew to $154, against $155 for the category, and to $119 over one year, against $119. Volatility over the past three years was 12.93% a year. In the 12 months to Jun 2026 the fund lost a net $611.2M, and assets reached $699.99M.
ISIIX Growth of $100
What $100 invested in Voya International Index Portfolio grew to, compounded from monthly returns reported on SEC Form N-PORT, against the International Large Blend category average over the same months.
| Period | ISIIX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $119 | $119 |
| 3 years (Jul 2023 – Jun 2026) | $154 | $155 |
| 5 years (Jul 2021 – Jun 2026) | $149 | $146 |
| Since data start (Jul 2019 – Jun 2026) | $195 | $189 |
ISIIX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +9.59% |
| 1 year | +18.74% |
| 3 years (annualised) | +15.47% |
| 5 years (annualised) | +8.27% |
ISIIX Annual Returns
Calendar-year total returns of Voya International Index Portfolio, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +9.59% |
| 2025 | +30.31% |
| 2024 | +2.62% |
| 2023 | +17.29% |
| 2022 | −14.98% |
| 2021 | +10.49% |
| 2020 | +20.50% |
| 2019 (Jul–Dec) | +0.06% |
ISIIX 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 | +5.1% | +4.7% | −8.4% | +5.8% | +2.2% | +0.5% | — | — | — | — | — | — |
| 2025 | +4.9% | +3.0% | −0.2% | +4.0% | +4.5% | +2.5% | −2.6% | +4.8% | +1.8% | +1.0% | +0.7% | +2.6% |
| 2024 | −0.5% | +2.8% | +3.2% | −3.3% | +5.2% | −2.3% | +2.9% | +3.4% | +0.7% | −5.6% | −0.3% | −3.0% |
| 2023 | +8.6% | −3.1% | +3.1% | +2.7% | −4.1% | +4.5% | +2.7% | −4.0% | −3.8% | −3.1% | +8.5% | +5.4% |
| 2022 | −3.9% | −3.1% | −0.2% | −6.5% | +1.8% | −9.0% | +5.1% | −6.0% | −9.4% | +5.8% | +13.8% | −1.9% |
| 2021 | −1.5% | +2.4% | +2.3% | +2.9% | +3.6% | −1.4% | +0.8% | +1.5% | −3.4% | +3.0% | −4.5% | +4.7% |
| 2020 | 0.0% | −0.1% | −0.1% | +0.1% | +0.1% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | +14.9% | +5.0% |
| 2019 | — | — | — | — | — | — | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
ISIIX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 12.93%
- 3-year Sharpe ratio: 0.85 (vs 4.5% risk-free rate)
- Best month: +8.53% (Nov 2023)
- Worst month: −8.36% (Mar 2026)
ISIIX Fund Flows
Monthly money in and out of Voya International Index Portfolio, from SEC Form N-PORT.
- 12-month net flow: −$611.2M
- 12-month gross sales (incl. reinvestments): $185.0M
- Sales ÷ redemptions: 0.23×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $5.5M | $5.9M | −$419K |
| May 2026 | $90.8M | $5.1M | $85.7M |
| Apr 2026 | $5.8M | $7.7M | −$1.8M |
| Mar 2026 | $13.1M | $7.0M | $6.1M |
| Feb 2026 | $6.7M | $15.9M | −$9.2M |
| Jan 2026 | $15.4M | $14.5M | $937K |
| Dec 2025 | $4.9M | $4.3M | $563K |
| Nov 2025 | $7.3M | $3.9M | $3.5M |
| Oct 2025 | $5.6M | $6.9M | −$1.3M |
| Sep 2025 | $12.2M | $680.2M | −$668.0M |
| Aug 2025 | $3.0M | $25.4M | −$22.4M |
| Jul 2025 | $14.5M | $19.2M | −$4.7M |
ISIIX Assets Under Management
Net assets of Voya International Index Portfolio by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $699.99M |
| 2026-03-31 | $590.52M |
| 2025-12-31 | $586.45M |
| 2025-09-30 | $558.64M |
| 2025-06-30 | $1.22B |
| 2025-03-31 | $1.16B |
| 2024-12-31 | $1.13B |
| 2024-09-30 | $1.23B |
| 2024-06-30 | $1.19B |
| 2024-03-31 | $1.18B |
| 2023-12-31 | $1.14B |
| 2023-09-30 | $1.06B |
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.