OWCAX Performance — Old Westbury California Municipal Bond Fund
Data updated: 2026-09-22
OWCAX returned −0.83% year to date and +2.33% over one year to Jul 2026. Annualised returns are +2.28% over 3 years and +0.49% over 5 years. The fund trailed its Intermediate Municipal Bond category average: $100 invested three years ago grew to $107, against $109 for the category, and to $102 over one year, against $105. Volatility over the past three years was 3.99% a year. In the 12 months to Jul 2026 the fund took in a net $42.6M, and assets reached $396.15M.
OWCAX Growth of $100
What $100 invested in Old Westbury California Municipal Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Municipal Bond category average over the same months.
| Period | OWCAX | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $102 | $105 |
| 3 years (Aug 2023 – Jul 2026) | $107 | $109 |
| 5 years (Aug 2021 – Jul 2026) | $102 | $102 |
| Since data start (Aug 2019 – Jul 2026) | $107 | $109 |
OWCAX Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | −0.83% |
| 1 year | +2.33% |
| 3 years (annualised) | +2.28% |
| 5 years (annualised) | +0.49% |
OWCAX Annual Returns
Calendar-year total returns of Old Westbury California Municipal Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | −0.83% |
| 2025 | +4.45% |
| 2024 | +0.34% |
| 2023 | +4.74% |
| 2022 | −5.15% |
| 2021 | −0.62% |
| 2020 | +3.91% |
| 2019 (Aug–Dec) | +0.32% |
OWCAX 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 | +0.8% | +0.9% | −2.3% | +0.5% | +0.1% | +0.4% | −1.2% | — | — | — | — | — |
| 2025 | +0.2% | +1.0% | −1.1% | −0.4% | +0.3% | +0.9% | +0.3% | +0.9% | +0.9% | +0.7% | +0.3% | +0.2% |
| 2024 | −0.2% | −0.1% | −0.2% | −1.0% | −0.6% | +1.0% | +0.9% | +0.9% | +0.8% | −1.3% | +1.1% | −0.9% |
| 2023 | +2.0% | −1.7% | +1.7% | −0.1% | −0.8% | +0.5% | +0.2% | −0.6% | −1.8% | −0.6% | +4.1% | +2.0% |
| 2022 | −2.1% | −0.5% | −2.1% | −1.8% | +1.4% | −0.7% | +1.8% | −1.5% | −2.2% | −0.3% | +2.9% | +0.3% |
| 2021 | +0.1% | −1.2% | +0.1% | +0.5% | 0.0% | +0.1% | +0.7% | −0.3% | −0.6% | −0.3% | +0.5% | −0.1% |
| 2020 | +1.1% | +0.6% | −1.4% | −0.2% | +2.6% | +0.1% | +0.9% | −0.3% | −0.1% | −0.4% | +0.8% | +0.2% |
| 2019 | — | — | — | — | — | — | — | +0.5% | −0.9% | +0.3% | +0.1% | +0.3% |
OWCAX Risk
Risk measures from monthly returns over Aug 2023 – Jul 2026.
- 3-year volatility (annualised): 3.99%
- 3-year Sharpe ratio: -0.56 (vs 4.5% risk-free rate)
- Best month: +4.06% (Nov 2023)
- Worst month: −2.32% (Mar 2026)
OWCAX Fund Flows
Monthly money in and out of Old Westbury California Municipal Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $42.6M
- 12-month gross sales (incl. reinvestments): $84.8M
- Sales ÷ redemptions: 2.01×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $4.6M | $6.4M | −$1.7M |
| Jun 2026 | $2.1M | $4.2M | −$2.1M |
| May 2026 | $956K | $2.0M | −$1.1M |
| Apr 2026 | $3.7M | $4.3M | −$645K |
| Mar 2026 | $5.3M | $4.4M | $935K |
| Feb 2026 | $7.6M | $2.4M | $5.2M |
| Jan 2026 | $14.3M | $1.7M | $12.6M |
| Dec 2025 | $6.4M | $5.7M | $734K |
| Nov 2025 | $2.7M | $909K | $1.8M |
| Oct 2025 | $4.3M | $4.8M | −$433K |
| Sep 2025 | $8.2M | $4.3M | $4.0M |
| Aug 2025 | $24.7M | $1.3M | $23.4M |
OWCAX Assets Under Management
Net assets of Old Westbury California Municipal Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $396.15M |
| 2026-04-30 | $406.48M |
| 2026-01-30 | $407.43M |
| 2025-10-31 | $389.23M |
| 2025-07-31 | $354.90M |
| 2025-04-30 | $352.29M |
| 2025-01-31 | $376.66M |
| 2024-10-31 | $368.73M |
| 2024-07-31 | $364.56M |
| 2024-04-30 | $350.14M |
| 2024-01-31 | $352.21M |
| 2023-10-31 | $340.30M |
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.