HABDX vs. VCOBX
HABDX (Harbor Core Plus Fund) and VCOBX (Vanguard Core Bond Fund Admiral Shares) are both mutual funds - HABDX is a Intermediate Core-Plus Bond fund managed by Harbor, while VCOBX is a Intermediate Core Bond fund actively managed by Vanguard. Over the past 10 years, HABDX returned 2.23%/yr vs 2.12%/yr for VCOBX. With a 0.95 correlation, they move nearly in lockstep. HABDX charges 0.38%/yr vs 0.10%/yr for VCOBX.
Performance
HABDX vs. VCOBX - Performance Comparison
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Returns By Period
In the year-to-date period, HABDX achieves a 0.58% return, which is significantly higher than VCOBX's 0.54% return. Both investments have delivered pretty close results over the past 10 years, with HABDX having a 2.23% annualized return and VCOBX not far behind at 2.12%.
HABDX
- 1D
- -0.30%
- 1M
- 0.65%
- YTD
- 0.58%
- 6M
- 0.68%
- 1Y
- 4.65%
- 3Y*
- 4.61%
- 5Y*
- 0.57%
- 10Y*
- 2.23%
VCOBX
- 1D
- -0.28%
- 1M
- 0.61%
- YTD
- 0.54%
- 6M
- 0.65%
- 1Y
- 4.61%
- 3Y*
- 4.80%
- 5Y*
- 0.50%
- 10Y*
- 2.12%
HABDX vs. VCOBX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
HABDX Harbor Core Plus Fund | 0.58% | 7.28% | 2.56% | 6.70% | -13.23% | -0.64% | 8.88% | 8.42% | -0.20% | 4.89% |
VCOBX Vanguard Core Bond Fund Admiral Shares | 0.54% | 7.73% | 2.21% | 6.39% | -13.13% | -1.51% | 10.41% | 9.64% | -0.85% | 3.89% |
Correlation
The correlation between HABDX and VCOBX is 0.97 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.97 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.98 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.98 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.95 |
Correlation (All Time) Calculated using the full available price history since Mar 30, 2016 | 0.95 |
The correlation between HABDX and VCOBX has been stable across timeframes, ranging from 0.95 to 0.98 - a consistent structural relationship.
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Return for Risk
HABDX vs. VCOBX — Risk / Return Rank
HABDX
VCOBX
HABDX vs. VCOBX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Harbor Core Plus Fund (HABDX) and Vanguard Core Bond Fund Admiral Shares (VCOBX). 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.
| HABDX | VCOBX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.01 | ||
| Sortino ratioReturn per unit of downside risk | 0.00 | ||
| Omega ratioGain probability vs. loss probability | 1.23 | 1.24 | -0.01 |
| Calmar ratioReturn relative to maximum drawdown | 1.79 | 1.86 | -0.07 |
| Martin ratioReturn relative to average drawdown | 5.10 | 5.25 | -0.15 |
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Drawdowns
HABDX vs. VCOBX - Drawdown Comparison
The maximum HABDX drawdown since its inception was -17.94%, roughly equal to the maximum VCOBX drawdown of -18.14%. Use the drawdown chart below to compare losses from any high point for HABDX and VCOBX.
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Drawdown Indicators
| HABDX | VCOBX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.94% | -18.14% | +0.20% |
Max Drawdown (1Y)Largest decline over 1 year | -2.73% | -2.62% | -0.11% |
Max Drawdown (3Y)Largest decline over 3 years | -6.15% | -5.63% | -0.52% |
Max Drawdown (5Y)Largest decline over 5 years | -17.94% | -18.03% | +0.09% |
Max Drawdown (10Y)Largest decline over 10 years | -17.94% | -18.14% | +0.20% |
Current DrawdownCurrent decline from peak | -1.32% | -1.30% | -0.02% |
Average DrawdownAverage peak-to-trough decline | -1.86% | -4.16% | +2.30% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.96% | 0.92% | +0.04% |
Volatility
HABDX vs. VCOBX - Volatility Comparison
Harbor Core Plus Fund (HABDX) and Vanguard Core Bond Fund Admiral Shares (VCOBX) have volatilities of 1.09% and 1.05%, 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
| HABDX | VCOBX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.09% | 1.05% | +0.04% |
Volatility (6M)Calculated over the trailing 6-month period | 2.69% | 2.74% | -0.05% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.68% | 3.64% | +0.04% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.69% | 5.78% | -0.09% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.84% | 4.76% | +0.08% |
HABDX vs. VCOBX - Expense Ratio Comparison
HABDX has a 0.38% expense ratio, which is higher than VCOBX's 0.10% expense ratio.
Dividends
HABDX vs. VCOBX - Dividend Comparison
HABDX's dividend yield for the trailing twelve months is around 4.70%, which matches VCOBX's 4.74% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
HABDX Harbor Core Plus Fund | 4.70% | 4.65% | 4.46% | 4.24% | 3.41% | 3.12% | 3.27% | 3.19% | 3.08% | 3.41% | 3.86% | 5.40% |
VCOBX Vanguard Core Bond Fund Admiral Shares | 4.74% | 4.80% | 5.04% | 4.44% | 3.01% | 1.23% | 3.09% | 3.08% | 3.10% | 2.20% | 2.29% | 0.00% |
Frequently Asked Questions
With a correlation of 0.97, HABDX and VCOBX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
HABDX has higher volatility (1.09%) compared to VCOBX (1.05%). In terms of maximum drawdown, HABDX dropped -17.94% vs VCOBX's -18.14%.
VCOBX currently has the higher Sharpe Ratio (1.34 vs 1.33), 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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