FCNVX vs. FXNAX

Last updated Jun 7, 2026

FCNVX (Fidelity Conservative Income Bond Institutional Class) and FXNAX (Fidelity U.S. Bond Index Fund) are both Total Bond Market funds from Fidelity. Over the past 10 years, FCNVX returned 2.58%/yr vs 1.51%/yr for FXNAX. At a 0.26 correlation, their price movements are largely independent. FCNVX charges 0.25%/yr vs 0.03%/yr for FXNAX.

Performance

FCNVX vs. FXNAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Conservative Income Bond Institutional Class (FCNVX) and Fidelity U.S. Bond Index Fund (FXNAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FCNVX achieves a 1.50% return, which is significantly higher than FXNAX's 0.31% return. Over the past 10 years, FCNVX has outperformed FXNAX with an annualized return of 2.58%, while FXNAX has yielded a comparatively lower 1.51% annualized return.

FCNVX

• 1D: 0.00%
• 1M: 0.33%
• YTD: 1.50%
• 6M: 1.85%
• 1Y: 4.24%
• 3Y*: 5.03%
• 5Y*: 3.58%
• 10Y*: 2.58%

FXNAX

• 1D: 0.10%
• 1M: -0.16%
• YTD: 0.31%
• 6M: 0.53%
• 1Y: 5.47%
• 3Y*: 3.98%
• 5Y*: 0.04%
• 10Y*: 1.51%

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

FCNVX vs. FXNAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FCNVX Fidelity Conservative Income Bond Institutional Class	1.50%	4.51%	5.43%	5.86%	0.85%	-0.06%	1.10%	3.00%	1.82%	1.42%
FXNAX Fidelity U.S. Bond Index Fund	0.31%	7.14%	1.35%	5.82%	-13.55%	-2.10%	7.63%	8.50%	0.04%	3.50%

Correlation

The correlation between FCNVX and FXNAX is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.32
Correlation (3Y) Calculated over the trailing 3-year period	0.36
Correlation (5Y) Calculated over the trailing 5-year period	0.34
Correlation (10Y) Calculated over the trailing 10-year period	0.30
Correlation (All Time) Calculated using the full available price history since May 27, 2011	0.26

The correlation between FCNVX and FXNAX shifts across timeframes, from 0.26 (all time) to 0.36 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

FCNVX vs. FXNAX — Risk / Return Rank

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

FCNVX

FCNVX Risk / Return Rank: 99
FCNVX Sharpe Ratio Rank: 96
FCNVX Sortino Ratio Rank: 100
FCNVX Omega Ratio Rank: 100
FCNVX Calmar Ratio Rank: 100
FCNVX Martin Ratio Rank: 100

FXNAX

FXNAX Risk / Return Rank: 19
FXNAX Sharpe Ratio Rank: 19
FXNAX Sortino Ratio Rank: 19
FXNAX Omega Ratio Rank: 18
FXNAX Calmar Ratio Rank: 21
FXNAX Martin Ratio Rank: 19

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.

FCNVX vs. FXNAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Conservative Income Bond Institutional Class (FCNVX) and Fidelity U.S. Bond Index Fund (FXNAX). 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.

	FCNVX	FXNAX	Difference
Sharpe ratio: Return per unit of total volatility	3.52	1.19	+2.33
Sortino ratio: Return per unit of downside risk	23.50	1.79	+21.72
Omega ratio: Gain probability vs. loss probability	13.78	1.21	+12.57
Calmar ratio: Return relative to maximum drawdown	41.82	1.59	+40.23
Martin ratio: Return relative to average drawdown	142.60	4.82	+137.78
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FCNVX vs. FXNAX - Sharpe Ratio Comparison

The current FCNVX Sharpe Ratio is 3.52, which is higher than the FXNAX Sharpe Ratio of 1.19. The chart below compares the historical Sharpe Ratios of FCNVX and FXNAX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	FCNVX	FXNAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.52	1.19	+2.33
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.79	0.01	+2.78
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	2.48	0.30	+2.18
Sharpe Ratio (All Time) Calculated using the full available price history	2.20	0.45	+1.75

Drawdowns

FCNVX vs. FXNAX - Drawdown Comparison

The maximum FCNVX drawdown since its inception was -2.19%, smaller than the maximum FXNAX drawdown of -19.51%. Use the drawdown chart below to compare losses from any high point for FCNVX and FXNAX.

Drawdown Indicators

	FCNVX	FXNAX	Difference
Max Drawdown Largest peak-to-trough decline	-2.19%	-19.51%	+17.32%
Max Drawdown (1Y) Largest decline over 1 year	-0.10%	-2.94%	+2.84%
Max Drawdown (3Y) Largest decline over 3 years	-0.30%	-6.16%	+5.86%
Max Drawdown (5Y) Largest decline over 5 years	-0.59%	-18.54%	+17.95%
Max Drawdown (10Y) Largest decline over 10 years	-2.19%	-19.51%	+17.32%
Current Drawdown Current decline from peak	0.00%	-2.98%	+2.98%
Average Drawdown Average peak-to-trough decline	-0.05%	-3.86%	+3.81%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.03%	0.97%	-0.94%

Volatility

FCNVX vs. FXNAX - Volatility Comparison

The current volatility for Fidelity Conservative Income Bond Institutional Class (FCNVX) is 0.33%, while Fidelity U.S. Bond Index Fund (FXNAX) has a volatility of 1.36%. This indicates that FCNVX experiences smaller price fluctuations and is considered to be less risky than FXNAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FCNVX	FXNAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.33%	1.36%	-1.03%
Volatility (6M) Calculated over the trailing 6-month period	0.78%	2.80%	-2.02%
Volatility (1Y) Calculated over the trailing 1-year period	1.18%	3.96%	-2.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.29%	6.07%	-4.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.04%	5.00%	-3.96%

FCNVX vs. FXNAX - Expense Ratio Comparison

FCNVX has a 0.25% expense ratio, which is higher than FXNAX's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

FCNVX vs. FXNAX - Dividend Comparison

FCNVX's dividend yield for the trailing twelve months is around 4.15%, more than FXNAX's 3.71% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FCNVX Fidelity Conservative Income Bond Institutional Class	4.15%	4.41%	5.17%	4.97%	1.24%	0.24%	0.99%	2.45%	2.21%	1.30%	1.01%	0.48%
FXNAX Fidelity U.S. Bond Index Fund	3.71%	3.58%	3.40%	3.15%	1.81%	1.74%	2.92%	2.68%	2.74%	2.57%	2.76%	2.52%

Frequently Asked Questions

Can I hold both FCNVX and FXNAX in my portfolio?

FCNVX and FXNAX have a correlation of 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FCNVX or FXNAX?

FXNAX has higher volatility (1.36%) compared to FCNVX (0.33%). In terms of maximum drawdown, FCNVX dropped -2.19% vs FXNAX's -19.51%.

Which has better risk-adjusted returns?

FCNVX currently has the higher Sharpe Ratio (3.52 vs 1.19), 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.