FTLTX vs. FNILX

Last updated Aug 5, 2026

FTLTX (Fidelity Series Long-Term Treasury Bond Index Fund) and FNILX (Fidelity ZERO Large Cap Index Fund) are both mutual funds - FTLTX is a Government Bonds fund managed by Fidelity, while FNILX is a Large Cap Blend Equities fund managed by Fidelity. Over the past 5 years, FTLTX returned -7.36%/yr vs 12.80%/yr for FNILX. Their -0.06 correlation means they have often moved in opposite directions in the past. Both charge a 0.00% expense ratio.

Performance

FTLTX vs. FNILX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Series Long-Term Treasury Bond Index Fund (FTLTX) and Fidelity ZERO Large Cap Index Fund (FNILX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FTLTX achieves a -3.32% return, which is significantly lower than FNILX's 11.48% return.

FTLTX

• 1D: 0.39%
• 1M: -3.58%
• 6M: -3.11%
• YTD: -3.32%
• 1Y: -1.95%
• 3Y*: -0.06%
• 5Y*: -7.36%
• 10Y*: —
• ALL TIME*: -0.66%

FNILX

• 1D: 1.49%
• 1M: 1.53%
• 6M: 10.57%
• YTD: 11.48%
• 1Y: 20.92%
• 3Y*: 21.06%
• 5Y*: 12.80%
• 10Y*: —
• ALL TIME*: 14.82%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
FNILX Fidelity ZERO Large Cap Index Fund	$0.00	$0.00	$0.00
FTLTX Fidelity Series Long-Term Treasury Bond Index Fund	$0.00	$0.00	$0.00

FTLTX vs. FNILX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FTLTX Fidelity Series Long-Term Treasury Bond Index Fund	-3.32%	5.45%	-6.13%	3.27%	-29.89%	-5.13%	17.45%	14.23%	4.33%
FNILX Fidelity ZERO Large Cap Index Fund	11.48%	17.81%	25.47%	27.45%	-19.37%	26.67%	21.13%	31.79%	-13.60%

Correlation

The correlation between FTLTX and FNILX is 0.25, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.25
Correlation (3Y) Balances recent behavior with more history.	0.18
Correlation (5Y) Shows whether the relationship held over a longer period.	0.09
Correlation (All Time) Calculated using the full available price history since Sep 28, 2018	-0.06

The correlation between FTLTX and FNILX shifts across timeframes, from -0.06 (all time) to 0.25 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

FTLTX vs. FNILX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

FTLTX

FTLTX Risk / Return Rank: 2
FTLTX Sharpe Ratio Rank: 2
FTLTX Sortino Ratio Rank: 2
FTLTX Omega Ratio Rank: 2
FTLTX Calmar Ratio Rank: 2
FTLTX Martin Ratio Rank: 2

FNILX

FNILX Risk / Return Rank: 72
FNILX Sharpe Ratio Rank: 72
FNILX Sortino Ratio Rank: 67
FNILX Omega Ratio Rank: 66
FNILX Calmar Ratio Rank: 74
FNILX Martin Ratio Rank: 81

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

FTLTX vs. FNILX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Series Long-Term Treasury Bond Index Fund (FTLTX) and Fidelity ZERO Large Cap Index Fund (FNILX). 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.

	FTLTX	FNILX	Difference
Sharpe ratio: Return per unit of total volatility	-0.19	1.77	-1.96
Sortino ratio: Return per unit of downside risk	-0.21	2.43	-2.64
Omega ratio: Gain probability vs. loss probability	0.98	1.32	-0.34
Calmar ratio: Return relative to maximum drawdown	-0.22	2.54	-2.75
Martin ratio: Return relative to average drawdown	-0.48	10.66	-11.14

FTLTX vs. FNILX - Sharpe Ratio Comparison

The current FTLTX Sharpe Ratio is -0.19, which is lower than the FNILX Sharpe Ratio of 1.77. The chart below compares the historical Sharpe Ratios of FTLTX and FNILX, 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

FTLTX vs. FNILX - Drawdown Comparison

The maximum FTLTX drawdown since its inception was -46.86%, which is greater than FNILX's maximum drawdown of -33.76%. Use the drawdown chart below to compare losses from any high point for FTLTX and FNILX.

Drawdown Indicators

	FTLTX	FNILX	Difference
Max Drawdown Largest peak-to-trough decline	-46.86%	-33.76%	-13.10%
Max Drawdown (1Y) Largest decline over 1 year	-7.38%	-9.01%	+1.63%
Max Drawdown (3Y) Largest decline over 3 years	-13.45%	-19.08%	+5.63%
Max Drawdown (5Y) Largest decline over 5 years	-41.52%	-25.40%	-16.12%
Current Drawdown Current decline from peak	-39.15%	-0.07%	-39.08%
Average Drawdown Average peak-to-trough decline	-20.29%	-5.29%	-15.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.28%	2.14%	+1.14%

Volatility

FTLTX vs. FNILX - Volatility Comparison

The current volatility for Fidelity Series Long-Term Treasury Bond Index Fund (FTLTX) is 2.42%, while Fidelity ZERO Large Cap Index Fund (FNILX) has a volatility of 3.83%. This indicates that FTLTX experiences smaller price fluctuations and is considered to be less risky than FNILX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FTLTX	FNILX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.42%	3.83%	-1.41%
Volatility (6M) Calculated over the trailing 6-month period	6.30%	10.27%	-3.97%
Volatility (1Y) Calculated over the trailing 1-year period	8.35%	12.96%	-4.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.46%	17.38%	-2.92%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.79%	19.95%	-6.16%

FTLTX vs. FNILX - Expense Ratio Comparison

FTLTX has a 0.00% expense ratio, which is lower than FNILX's 0.00% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

FTLTX vs. FNILX - Dividend Comparison

FTLTX's dividend yield for the trailing twelve months is around 3.76%, more than FNILX's 0.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
FNILX Fidelity ZERO Large Cap Index Fund	0.91%	1.01%	1.09%	1.34%	1.53%	0.95%	1.20%	1.17%	0.53%	0.00%
FTLTX Fidelity Series Long-Term Treasury Bond Index Fund	3.76%	3.83%	3.71%	3.17%	2.20%	2.06%	12.95%	10.68%	2.89%	2.44%

Frequently Asked Questions

Can I hold both FTLTX and FNILX in my portfolio?

FTLTX and FNILX have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FTLTX or FNILX?

FNILX has higher volatility (3.83%) compared to FTLTX (2.42%). In terms of maximum drawdown, FTLTX dropped -46.86% vs FNILX's -33.76%.

Which has better risk-adjusted returns?

FNILX currently has the higher Sharpe Ratio (1.77 vs -0.19), 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.