OWMBX vs. OWNYX
OWMBX (Old Westbury Municipal Bond Fund) and OWNYX (Old Westbury New York Municipal Bond Fund) are both Municipal Bonds funds from Old Westbury. Over the past 5 years, OWMBX returned 0.34%/yr vs 0.54%/yr for OWNYX. Their correlation of 0.86 means they have usually moved in the same direction. Both charge a 0.57% expense ratio.
Performance
OWMBX vs. OWNYX - Performance Comparison
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Returns By Period
The year-to-date returns for both investments are quite close, with OWMBX having a -0.56% return and OWNYX slightly higher at -0.55%.
OWMBX
- 1D
- -0.09%
- 1M
- -1.22%
- 6M
- -1.42%
- YTD
- -0.56%
- 1Y
- 2.44%
- 3Y*
- 2.28%
- 5Y*
- 0.34%
- 10Y*
- 1.23%
- ALL TIME*
- 3.05%
OWNYX
- 1D
- -0.10%
- 1M
- -1.21%
- 6M
- -1.24%
- YTD
- -0.55%
- 1Y
- 2.32%
- 3Y*
- 2.42%
- 5Y*
- 0.54%
- 10Y*
- —
- ALL TIME*
- 1.62%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
OWMBX vs. OWNYX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
OWMBX Old Westbury Municipal Bond Fund | -0.56% | 4.29% | 0.43% | 4.03% | -5.39% | -0.63% | 5.01% | 5.58% | 0.99% |
OWNYX Old Westbury New York Municipal Bond Fund | -0.55% | 4.64% | 0.45% | 4.24% | -5.03% | -0.31% | 3.74% | 4.95% | 0.68% |
Correlation
The correlation between OWMBX and OWNYX is 0.81, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.81 |
Correlation (3Y) Balances recent behavior with more history. | 0.88 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.89 |
Correlation (All Time) Calculated using the full available price history since Dec 3, 2018 | 0.86 |
The correlation between OWMBX and OWNYX has been stable across timeframes, ranging from 0.81 to 0.89 - a consistent structural relationship.
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Return for Risk
OWMBX vs. OWNYX — Risk / Return Rank
OWMBX
OWNYX
OWMBX vs. OWNYX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Old Westbury Municipal Bond Fund (OWMBX) and Old Westbury New York Municipal Bond Fund (OWNYX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| OWMBX | OWNYX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.03 | ||
| Sortino ratioReturn per unit of downside risk | -0.05 | ||
| Omega ratioGain probability vs. loss probability | 1.32 | 1.33 | -0.01 |
| Calmar ratioReturn relative to maximum drawdown | 1.13 | 1.19 | -0.06 |
| Martin ratioReturn relative to average drawdown | 2.69 | 2.90 | -0.21 |
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Drawdowns
OWMBX vs. OWNYX - Drawdown Comparison
The maximum OWMBX drawdown since its inception was -9.54%, which is greater than OWNYX's maximum drawdown of -8.98%. Use the drawdown chart below to compare losses from any high point for OWMBX and OWNYX.
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Drawdown Indicators
| OWMBX | OWNYX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -9.54% | -8.98% | -0.56% |
Max Drawdown (1Y)Largest decline over 1 year | -2.45% | -2.32% | -0.13% |
Max Drawdown (3Y)Largest decline over 3 years | -3.22% | -3.14% | -0.08% |
Max Drawdown (5Y)Largest decline over 5 years | -9.37% | -8.98% | -0.39% |
Max Drawdown (10Y)Largest decline over 10 years | -9.44% | — | — |
Current DrawdownCurrent decline from peak | -2.17% | -2.12% | -0.05% |
Average DrawdownAverage peak-to-trough decline | -1.64% | -2.08% | +0.44% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.98% | 0.92% | +0.06% |
Volatility
OWMBX vs. OWNYX - Volatility Comparison
Old Westbury Municipal Bond Fund (OWMBX) and Old Westbury New York Municipal Bond Fund (OWNYX) have volatilities of 0.69% and 0.67%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| OWMBX | OWNYX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.69% | 0.67% | +0.02% |
Volatility (6M)Calculated over the trailing 6-month period | 1.58% | 1.52% | +0.06% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.02% | 1.98% | +0.04% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 3.13% | 3.08% | +0.05% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 3.04% | 3.27% | -0.23% |
OWMBX vs. OWNYX - Expense Ratio Comparison
Both OWMBX and OWNYX have an expense ratio of 0.57%.
Dividends
OWMBX vs. OWNYX - Dividend Comparison
OWMBX's dividend yield for the trailing twelve months is around 2.63%, more than OWNYX's 2.43% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
OWMBX Old Westbury Municipal Bond Fund | 2.63% | 2.61% | 2.54% | 2.01% | 1.15% | 2.06% | 2.55% | 1.68% | 1.45% | 1.18% | 1.61% | 1.40% |
OWNYX Old Westbury New York Municipal Bond Fund | 2.43% | 2.88% | 2.40% | 1.99% | 1.29% | 1.41% | 1.76% | 1.60% | 0.08% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
OWMBX and OWNYX have a correlation of 0.81, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
OWMBX has higher volatility (0.69%) compared to OWNYX (0.67%). In terms of maximum drawdown, OWMBX dropped -9.54% vs OWNYX's -8.98%.
OWNYX currently has the higher Sharpe Ratio (1.40 vs 1.37), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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