FITLX vs. FNDSX

Last updated Jun 24, 2026

FITLX (Fidelity U.S. Sustainability Index Fund) and FNDSX (Fidelity Sustainability Bond Index Fund) are both mutual funds - FITLX is a Large Cap Blend Equities fund tracking the MSCI USA ESG Leaders Index, while FNDSX is a Total Bond Market fund managed by Fidelity. Over the past 5 years, FITLX returned 13.51%/yr vs -0.14%/yr for FNDSX. At a 0.04 correlation, their price movements are largely independent. FITLX charges 0.11%/yr vs 0.10%/yr for FNDSX.

Performance

FITLX vs. FNDSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity U.S. Sustainability Index Fund (FITLX) and Fidelity Sustainability Bond Index Fund (FNDSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FITLX achieves a 8.80% return, which is significantly higher than FNDSX's 0.10% return.

FITLX

• 1D: -0.54%
• 1M: -0.09%
• YTD: 8.80%
• 6M: 7.56%
• 1Y: 26.05%
• 3Y*: 21.42%
• 5Y*: 13.51%
• 10Y*: —

FNDSX

• 1D: -0.32%
• 1M: 0.55%
• YTD: 0.10%
• 6M: 0.42%
• 1Y: 4.12%
• 3Y*: 3.80%
• 5Y*: -0.14%
• 10Y*: —

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

FITLX vs. FNDSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FITLX Fidelity U.S. Sustainability Index Fund	8.80%	18.77%	23.59%	29.04%	-20.28%	31.55%	18.69%	31.54%	-7.44%
FNDSX Fidelity Sustainability Bond Index Fund	0.10%	7.03%	1.23%	5.44%	-13.34%	-2.22%	6.95%	8.30%	1.89%

Correlation

The correlation between FITLX and FNDSX is 0.26, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.26
Correlation (3Y) Calculated over the trailing 3-year period	0.20
Correlation (5Y) Calculated over the trailing 5-year period	0.15
Correlation (All Time) Calculated using the full available price history since Jun 19, 2018	0.04

Over the past year, FITLX and FNDSX have become more correlated (0.26) than their long-term average of 0.04, meaning their price movements have been converging.

Return for Risk

FITLX vs. FNDSX — Risk / Return Rank

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

FITLX

FITLX Risk / Return Rank: 53
FITLX Sharpe Ratio Rank: 58
FITLX Sortino Ratio Rank: 54
FITLX Omega Ratio Rank: 54
FITLX Calmar Ratio Rank: 46
FITLX Martin Ratio Rank: 56

FNDSX

FNDSX Risk / Return Rank: 18
FNDSX Sharpe Ratio Rank: 17
FNDSX Sortino Ratio Rank: 18
FNDSX Omega Ratio Rank: 16
FNDSX Calmar Ratio Rank: 19
FNDSX Martin Ratio Rank: 17

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.

FITLX vs. FNDSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity U.S. Sustainability Index Fund (FITLX) and Fidelity Sustainability Bond Index Fund (FNDSX). 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.

	FITLX	FNDSX	Difference
Sharpe ratio: Return per unit of total volatility	2.07	1.11	+0.95
Sortino ratio: Return per unit of downside risk	2.84	1.67	+1.17
Omega ratio: Gain probability vs. loss probability	1.37	1.20	+0.17
Calmar ratio: Return relative to maximum drawdown	2.48	1.48	+0.99
Martin ratio: Return relative to average drawdown	10.60	4.17	+6.42

FITLX vs. FNDSX - Sharpe Ratio Comparison

The current FITLX Sharpe Ratio is 2.07, which is higher than the FNDSX Sharpe Ratio of 1.11. The chart below compares the historical Sharpe Ratios of FITLX and FNDSX, 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

FITLX vs. FNDSX - Drawdown Comparison

The maximum FITLX drawdown since its inception was -34.35%, which is greater than FNDSX's maximum drawdown of -19.72%. Use the drawdown chart below to compare losses from any high point for FITLX and FNDSX.

Drawdown Indicators

	FITLX	FNDSX	Difference
Max Drawdown Largest peak-to-trough decline	-34.35%	-19.72%	-14.63%
Max Drawdown (1Y) Largest decline over 1 year	-11.15%	-2.94%	-8.21%
Max Drawdown (3Y) Largest decline over 3 years	-19.99%	-6.11%	-13.88%
Max Drawdown (5Y) Largest decline over 5 years	-26.91%	-18.30%	-8.61%
Current Drawdown Current decline from peak	-1.95%	-4.06%	+2.11%
Average Drawdown Average peak-to-trough decline	-5.05%	-6.48%	+1.43%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.60%	1.04%	+1.56%

Volatility

FITLX vs. FNDSX - Volatility Comparison

Fidelity U.S. Sustainability Index Fund (FITLX) has a higher volatility of 5.00% compared to Fidelity Sustainability Bond Index Fund (FNDSX) at 1.20%. This indicates that FITLX's price experiences larger fluctuations and is considered to be riskier than FNDSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FITLX	FNDSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.00%	1.20%	+3.80%
Volatility (6M) Calculated over the trailing 6-month period	10.67%	2.89%	+7.78%
Volatility (1Y) Calculated over the trailing 1-year period	13.38%	3.92%	+9.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.68%	6.01%	+11.67%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.11%	5.30%	+13.81%

FITLX vs. FNDSX - Expense Ratio Comparison

FITLX has a 0.11% expense ratio, which is higher than FNDSX's 0.10% 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

FITLX vs. FNDSX - Dividend Comparison

FITLX's dividend yield for the trailing twelve months is around 1.02%, less than FNDSX's 3.97% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
FITLX Fidelity U.S. Sustainability Index Fund	1.02%	1.11%	1.29%	1.12%	1.49%	0.99%	1.01%	1.41%	1.58%	0.76%
FNDSX Fidelity Sustainability Bond Index Fund	3.97%	3.84%	3.53%	2.84%	1.55%	1.17%	1.79%	3.17%	1.56%	0.00%

Frequently Asked Questions

Can I hold both FITLX and FNDSX in my portfolio?

FITLX and FNDSX have a correlation of 0.26, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FITLX or FNDSX?

FITLX has higher volatility (5.00%) compared to FNDSX (1.20%). In terms of maximum drawdown, FITLX dropped -34.35% vs FNDSX's -19.72%.

Which has better risk-adjusted returns?

FITLX currently has the higher Sharpe Ratio (2.07 vs 1.11), 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.