HABDX vs. FXAIX

Last updated Jun 23, 2026

HABDX (Harbor Core Plus Fund) and FXAIX (Fidelity 500 Index Fund) are both mutual funds - HABDX is a Intermediate Core-Plus Bond fund managed by Harbor, while FXAIX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, HABDX returned 2.29%/yr vs 15.58%/yr for FXAIX. At a correlation of -0.04, they often move in opposite directions. HABDX charges 0.38%/yr vs 0.02%/yr for FXAIX.

Performance

HABDX vs. FXAIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Harbor Core Plus Fund (HABDX) and Fidelity 500 Index Fund (FXAIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, HABDX achieves a 0.88% return, which is significantly lower than FXAIX's 10.19% return. Over the past 10 years, HABDX has underperformed FXAIX with an annualized return of 2.29%, while FXAIX has yielded a comparatively higher 15.58% annualized return.

HABDX

• 1D: 0.30%
• 1M: 0.94%
• YTD: 0.88%
• 6M: 0.98%
• 1Y: 5.17%
• 3Y*: 4.75%
• 5Y*: 0.58%
• 10Y*: 2.29%

FXAIX

• 1D: 1.09%
• 1M: 0.47%
• YTD: 10.19%
• 6M: 9.68%
• 1Y: 27.18%
• 3Y*: 20.98%
• 5Y*: 14.10%
• 10Y*: 15.58%

*Multi-year figures are annualized to reflect compound growth (CAGR)

HABDX vs. FXAIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
HABDX Harbor Core Plus Fund	0.88%	7.28%	2.56%	6.70%	-13.23%	-0.64%	8.88%	8.42%	-0.20%	4.89%
FXAIX Fidelity 500 Index Fund	10.19%	17.84%	25.01%	26.29%	-18.14%	28.71%	18.42%	31.48%	-4.43%	21.82%

Correlation

The correlation between HABDX and FXAIX is 0.35, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.35
Correlation (3Y) Calculated over the trailing 3-year period	0.22
Correlation (5Y) Calculated over the trailing 5-year period	0.16
Correlation (10Y) Calculated over the trailing 10-year period	0.01
Correlation (All Time) Calculated using the full available price history since May 4, 2011	-0.04

The correlation between HABDX and FXAIX shifts across timeframes, from -0.04 (all time) to 0.35 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

HABDX vs. FXAIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

HABDX

HABDX Risk / Return Rank: 29
HABDX Sharpe Ratio Rank: 30
HABDX Sortino Ratio Rank: 31
HABDX Omega Ratio Rank: 28
HABDX Calmar Ratio Rank: 30
HABDX Martin Ratio Rank: 25

FXAIX

FXAIX Risk / Return Rank: 66
FXAIX Sharpe Ratio Rank: 64
FXAIX Sortino Ratio Rank: 59
FXAIX Omega Ratio Rank: 61
FXAIX Calmar Ratio Rank: 68
FXAIX Martin Ratio Rank: 79

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

HABDX vs. FXAIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Harbor Core Plus Fund (HABDX) and Fidelity 500 Index Fund (FXAIX). 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	FXAIX	Difference
Sharpe ratio: Return per unit of total volatility	1.45	2.17	-0.72
Sortino ratio: Return per unit of downside risk	2.16	2.93	-0.77
Omega ratio: Gain probability vs. loss probability	1.26	1.39	-0.14
Calmar ratio: Return relative to maximum drawdown	1.94	3.04	-1.10
Martin ratio: Return relative to average drawdown	5.56	13.75	-8.19

HABDX vs. FXAIX - Sharpe Ratio Comparison

The current HABDX Sharpe Ratio is 1.45, which is lower than the FXAIX Sharpe Ratio of 2.17. The chart below compares the historical Sharpe Ratios of HABDX and FXAIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

HABDX vs. FXAIX - Drawdown Comparison

The maximum HABDX drawdown since its inception was -17.94%, smaller than the maximum FXAIX drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for HABDX and FXAIX.

Drawdown Indicators

	HABDX	FXAIX	Difference
Max Drawdown Largest peak-to-trough decline	-17.94%	-33.79%	+15.85%
Max Drawdown (1Y) Largest decline over 1 year	-2.73%	-8.89%	+6.16%
Max Drawdown (3Y) Largest decline over 3 years	-6.15%	-18.76%	+12.61%
Max Drawdown (5Y) Largest decline over 5 years	-17.94%	-24.50%	+6.56%
Max Drawdown (10Y) Largest decline over 10 years	-17.94%	-33.79%	+15.85%
Current Drawdown Current decline from peak	-1.03%	-1.36%	+0.33%
Average Drawdown Average peak-to-trough decline	-1.86%	-3.79%	+1.93%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.95%	1.96%	-1.01%

Volatility

HABDX vs. FXAIX - Volatility Comparison

The current volatility for Harbor Core Plus Fund (HABDX) is 1.11%, while Fidelity 500 Index Fund (FXAIX) has a volatility of 4.77%. This indicates that HABDX experiences smaller price fluctuations and is considered to be less risky than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	HABDX	FXAIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.11%	4.77%	-3.66%
Volatility (6M) Calculated over the trailing 6-month period	2.68%	9.91%	-7.23%
Volatility (1Y) Calculated over the trailing 1-year period	3.66%	12.47%	-8.81%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.68%	17.01%	-11.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.83%	18.11%	-13.28%

HABDX vs. FXAIX - Expense Ratio Comparison

HABDX has a 0.38% expense ratio, which is higher than FXAIX's 0.02% expense ratio.

Dividends

HABDX vs. FXAIX - Dividend Comparison

HABDX's dividend yield for the trailing twelve months is around 4.69%, more than FXAIX's 1.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FXAIX Fidelity 500 Index Fund	1.04%	1.11%	1.25%	1.45%	1.69%	1.22%	1.60%	2.06%	2.72%	1.97%	2.52%	2.83%
HABDX Harbor Core Plus Fund	4.69%	4.65%	4.46%	4.24%	3.41%	3.12%	3.27%	3.19%	3.08%	3.41%	3.86%	5.40%

Frequently Asked Questions

Can I hold both HABDX and FXAIX in my portfolio?

HABDX and FXAIX have a correlation of 0.35, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, HABDX or FXAIX?

FXAIX has higher volatility (4.77%) compared to HABDX (1.11%). In terms of maximum drawdown, HABDX dropped -17.94% vs FXAIX's -33.79%.

Which has better risk-adjusted returns?

FXAIX currently has the higher Sharpe Ratio (2.17 vs 1.45), 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.