IUSBX Performance — Voya U.s. Bond Index Portfolio, Class S2
Data updated: 2026-08-24
IUSBX returned +0.31% year to date and +2.91% over one year to Jun 2026. Annualised returns are +3.25% over 3 years and −0.71% over 5 years. The fund trailed its Intermediate Core Bond category average: $100 invested three years ago grew to $110, against $115 for the category, and to $103 over one year, against $104. Volatility over the past three years was 5.50% a year. In the 12 months to Jun 2026 the fund lost a net $849.9M, and assets reached $540.32M.
IUSBX Growth of $100
What $100 invested in Voya U.s. Bond Index Portfolio grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Core Bond category average over the same months.
| Period | IUSBX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $103 | $104 |
| 3 years (Jul 2023 – Jun 2026) | $110 | $115 |
| 5 years (Jul 2021 – Jun 2026) | $97 | $102 |
| Since data start (Jul 2019 – Jun 2026) | $96 | $112 |
IUSBX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.31% |
| 1 year | +2.91% |
| 3 years (annualised) | +3.25% |
| 5 years (annualised) | −0.71% |
IUSBX Annual Returns
Calendar-year total returns of Voya U.s. Bond Index Portfolio, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +0.31% |
| 2025 | +6.28% |
| 2024 | +0.49% |
| 2023 | +4.62% |
| 2022 | −13.50% |
| 2021 | −2.27% |
| 2020 | +1.06% |
| 2019 (Jul–Dec) | +0.02% |
IUSBX 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 | +0.1% | +1.6% | −1.9% | +0.2% | +0.2% | +0.2% | — | — | — | — | — | — |
| 2025 | +0.5% | +2.1% | 0.0% | +0.4% | −0.8% | +1.4% | −0.2% | +1.1% | +0.9% | +0.5% | +0.6% | −0.4% |
| 2024 | −0.1% | −1.6% | +0.8% | −2.5% | +1.6% | +1.0% | +2.2% | +1.4% | +1.3% | −2.6% | +1.1% | −1.8% |
| 2023 | +3.1% | −2.6% | +2.5% | +0.6% | −1.2% | −0.4% | −0.2% | −0.7% | −2.6% | −1.6% | +4.4% | +3.6% |
| 2022 | −2.0% | −1.1% | −2.8% | −3.8% | +0.6% | −1.6% | +2.3% | −2.8% | −4.4% | −1.3% | +3.6% | −0.7% |
| 2021 | −0.7% | −1.4% | −1.4% | +0.7% | +0.1% | +0.8% | +1.1% | −0.3% | −0.9% | −0.2% | +0.3% | −0.5% |
| 2020 | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | +0.9% | +0.1% |
| 2019 | — | — | — | — | — | — | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
IUSBX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 5.50%
- 3-year Sharpe ratio: -0.23 (vs 4.5% risk-free rate)
- Best month: +4.42% (Nov 2023)
- Worst month: −2.61% (Oct 2024)
IUSBX Fund Flows
Monthly money in and out of Voya U.s. Bond Index Portfolio, from SEC Form N-PORT.
- 12-month net flow: −$849.9M
- 12-month gross sales (incl. reinvestments): $383.1M
- Sales ÷ redemptions: 0.31×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $31.3M | $14.5M | $16.8M |
| May 2026 | $8.7M | $18.4M | −$9.7M |
| Apr 2026 | $41.4M | $20.3M | $21.1M |
| Mar 2026 | $76.8M | $28.4M | $48.4M |
| Feb 2026 | $16.6M | $60.1M | −$43.5M |
| Jan 2026 | $55.9M | $29.1M | $26.9M |
| Dec 2025 | $34.7M | $20.6M | $14.1M |
| Nov 2025 | $15.1M | $29.7M | −$14.6M |
| Oct 2025 | $11.0M | $25.3M | −$14.4M |
| Sep 2025 | $15.0M | $928.6M | −$913.6M |
| Aug 2025 | $11.1M | $28.9M | −$17.8M |
| Jul 2025 | $65.5M | $29.1M | $36.4M |
IUSBX Assets Under Management
Net assets of Voya U.s. Bond Index Portfolio by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $540.32M |
| 2026-03-31 | $514.29M |
| 2025-12-31 | $486.78M |
| 2025-09-30 | $502.08M |
| 2025-06-30 | $1.38B |
| 2025-03-31 | $1.54B |
| 2024-12-31 | $1.57B |
| 2024-09-30 | $1.64B |
| 2024-06-30 | $1.57B |
| 2024-03-31 | $1.62B |
| 2023-12-31 | $1.59B |
| 2023-09-30 | $1.56B |
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.