FTLTX vs. LTUSX
FTLTX (Fidelity Series Long-Term Treasury Bond Index Fund) and LTUSX (Thornburg Limited Term U.S. Government Fund) are both Government Bonds funds. Over the past 5 years, FTLTX returned -7.36%/yr vs 0.42%/yr for LTUSX. Their 0.77 correlation means they have sometimes moved together and sometimes differently. FTLTX charges 0.00%/yr vs 0.92%/yr for LTUSX.
Performance
FTLTX vs. LTUSX - Performance Comparison
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Returns By Period
In the year-to-date period, FTLTX achieves a -3.32% return, which is significantly lower than LTUSX's -0.06% 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%
LTUSX
- 1D
- 0.08%
- 1M
- -0.66%
- 6M
- -0.33%
- YTD
- -0.06%
- 1Y
- 1.90%
- 3Y*
- 3.67%
- 5Y*
- 0.42%
- 10Y*
- 0.94%
- ALL TIME*
- 3.45%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
FTLTX vs. LTUSX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
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% | -1.63% | 8.22% |
LTUSX Thornburg Limited Term U.S. Government Fund | -0.06% | 6.40% | 2.40% | 3.40% | -8.06% | -1.82% | 3.77% | 3.61% | 0.98% | 0.60% |
Correlation
The correlation between FTLTX and LTUSX is 0.80, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.80 |
Correlation (3Y) Balances recent behavior with more history. | 0.84 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.83 |
Correlation (All Time) Calculated using the full available price history since Jan 3, 2017 | 0.77 |
The correlation between FTLTX and LTUSX has been stable across timeframes, ranging from 0.77 to 0.84 - a consistent structural relationship.
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Return for Risk
FTLTX vs. LTUSX — Risk / Return Rank
FTLTX
LTUSX
FTLTX vs. LTUSX - 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 Thornburg Limited Term U.S. Government Fund (LTUSX). 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 | LTUSX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.92 | ||
| Sortino ratioReturn per unit of downside risk | -1.26 | ||
| Omega ratioGain probability vs. loss probability | 0.98 | 1.13 | -0.15 |
| Calmar ratioReturn relative to maximum drawdown | -0.22 | 0.90 | -1.11 |
| Martin ratioReturn relative to average drawdown | -0.48 | 2.09 | -2.57 |
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Drawdowns
FTLTX vs. LTUSX - Drawdown Comparison
The maximum FTLTX drawdown since its inception was -46.86%, which is greater than LTUSX's maximum drawdown of -12.34%. Use the drawdown chart below to compare losses from any high point for FTLTX and LTUSX.
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Drawdown Indicators
| FTLTX | LTUSX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -46.86% | -12.34% | -34.52% |
Max Drawdown (1Y)Largest decline over 1 year | -7.38% | -2.31% | -5.07% |
Max Drawdown (3Y)Largest decline over 3 years | -13.45% | -3.23% | -10.22% |
Max Drawdown (5Y)Largest decline over 5 years | -41.52% | -11.45% | -30.07% |
Max Drawdown (10Y)Largest decline over 10 years | — | -12.34% | — |
Current DrawdownCurrent decline from peak | -39.15% | -2.02% | -37.13% |
Average DrawdownAverage peak-to-trough decline | -20.29% | -1.40% | -18.89% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.28% | 0.99% | +2.29% |
Volatility
FTLTX vs. LTUSX - Volatility Comparison
Fidelity Series Long-Term Treasury Bond Index Fund (FTLTX) has a higher volatility of 2.42% compared to Thornburg Limited Term U.S. Government Fund (LTUSX) at 0.90%. This indicates that FTLTX's price experiences larger fluctuations and is considered to be riskier than LTUSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FTLTX | LTUSX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.42% | 0.90% | +1.52% |
Volatility (6M)Calculated over the trailing 6-month period | 6.30% | 2.32% | +3.98% |
Volatility (1Y)Calculated over the trailing 1-year period | 8.35% | 2.84% | +5.51% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 14.46% | 4.05% | +10.41% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 13.79% | 3.10% | +10.69% |
FTLTX vs. LTUSX - Expense Ratio Comparison
FTLTX has a 0.00% expense ratio, which is lower than LTUSX's 0.92% expense ratio.
Dividends
FTLTX vs. LTUSX - Dividend Comparison
FTLTX's dividend yield for the trailing twelve months is around 3.76%, more than LTUSX's 2.49% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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% | 0.00% | 0.00% |
LTUSX Thornburg Limited Term U.S. Government Fund | 2.49% | 2.69% | 2.62% | 1.89% | 1.63% | 1.21% | 1.35% | 1.77% | 1.90% | 1.45% | 2.52% | 1.50% |
Frequently Asked Questions
FTLTX and LTUSX have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
FTLTX has higher volatility (2.42%) compared to LTUSX (0.90%). In terms of maximum drawdown, FTLTX dropped -46.86% vs LTUSX's -12.34%.
LTUSX currently has the higher Sharpe Ratio (0.73 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.
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