OWSBX Performance — Old Westbury Short-Term Bond Fund
Data updated: 2026-09-22
OWSBX returned +0.81% year to date and +3.10% over one year to Jul 2026. Over one year the fund beat its Short-Term Government Bond category average: $100 grew to $103, against $103 for the category. Volatility over the past 12 months was 1.21% a year. In the 12 months to Jul 2026 the fund took in a net $48.6M, and assets reached $144.00M.
OWSBX Growth of $100
What $100 invested in Old Westbury Short-Term Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Short-Term Government Bond category average over the same months.
| Period | OWSBX | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $103 | $103 |
| Since data start (Mar 2024 – Jul 2026) | $111 | $110 |
OWSBX Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.81% |
| 1 year | +3.10% |
| 3 years (annualised) | +4.22% |
OWSBX Annual Returns
Calendar-year total returns of Old Westbury Short-Term Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | +0.81% |
| 2025 | +5.24% |
| 2024 (Mar–Dec) | +4.17% |
OWSBX 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 | +0.2% | +0.6% | −0.6% | +0.3% | +0.2% | 0.0% | +0.1% | — | — | — | — | — |
| 2025 | +0.4% | +0.8% | +0.4% | +0.7% | 0.0% | +0.6% | 0.0% | +0.9% | +0.3% | +0.3% | +0.4% | +0.4% |
| 2024 | — | — | +0.4% | −0.4% | +0.8% | +0.6% | +1.1% | +0.9% | +0.8% | −0.6% | +0.4% | +0.1% |
OWSBX Risk
Risk measures from monthly returns over Aug 2025 – Jul 2026.
- 1-year volatility (annualised): 1.21%
- Best month: +0.88% (Aug 2025)
- Worst month: −0.59% (Mar 2026)
OWSBX Fund Flows
Monthly money in and out of Old Westbury Short-Term Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $48.6M
- 12-month gross sales (incl. reinvestments): $110.8M
- Sales ÷ redemptions: 1.78×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $2.3M | $10.1M | −$7.7M |
| Jun 2026 | $3.4M | $4.8M | −$1.4M |
| May 2026 | $760K | $8.2M | −$7.5M |
| Apr 2026 | $11.9M | $6.8M | $5.0M |
| Mar 2026 | $9.5M | $8.0M | $1.5M |
| Feb 2026 | $11.5M | $605K | $10.9M |
| Jan 2026 | $45.5M | $8.3M | $37.2M |
| Dec 2025 | $9.9M | $9.4M | $473K |
| Nov 2025 | $6.0M | $1.8M | $4.2M |
| Oct 2025 | $4.7M | $2.0M | $2.7M |
| Sep 2025 | $4.5M | $530K | $3.9M |
| Aug 2025 | $849K | $1.6M | −$764K |
OWSBX Assets Under Management
Net assets of Old Westbury Short-Term Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $144.00M |
| 2026-04-30 | $161.44M |
| 2026-01-30 | $145.04M |
| 2025-10-31 | $103.05M |
| 2025-07-31 | $96.74M |
| 2025-04-30 | $93.80M |
| 2025-01-31 | $82.40M |
| 2024-10-31 | $60.03M |
| 2024-07-31 | $27.33M |
| 2024-04-30 | $15.50M |
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.