FTLTX vs. DBLDX
FTLTX (Fidelity Series Long-Term Treasury Bond Index Fund) and DBLDX (DoubleLine Long Duration Total Return Bond Fund) are both Government Bonds funds. Over the past 5 years, FTLTX returned -7.36%/yr vs -6.73%/yr for DBLDX. Their 0.97 correlation means they have historically moved very closely together. FTLTX charges 0.00%/yr vs 0.50%/yr for DBLDX.
Performance
FTLTX vs. DBLDX - 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 DBLDX's -3.04% 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%
DBLDX
- 1D
- 0.34%
- 1M
- -3.43%
- 6M
- -3.44%
- YTD
- -3.04%
- 1Y
- -1.08%
- 3Y*
- 1.09%
- 5Y*
- -6.73%
- 10Y*
- -1.33%
- ALL TIME*
- -0.16%
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. DBLDX - 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% |
DBLDX DoubleLine Long Duration Total Return Bond Fund | -3.04% | 6.25% | -4.42% | 3.79% | -29.25% | -3.91% | 14.17% | 14.19% | -0.79% | 6.75% |
Correlation
The correlation between FTLTX and DBLDX is 0.96 - they have historically moved very closely together. At this level, their price movements offset little of one another.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.96 |
Correlation (3Y) Balances recent behavior with more history. | 0.97 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.98 |
Correlation (All Time) Calculated using the full available price history since Jan 3, 2017 | 0.97 |
The correlation between FTLTX and DBLDX has been stable across timeframes, ranging from 0.96 to 0.98 - a consistent structural relationship.
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Return for Risk
FTLTX vs. DBLDX — Risk / Return Rank
FTLTX
DBLDX
FTLTX vs. DBLDX - 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 DoubleLine Long Duration Total Return Bond Fund (DBLDX). 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 | DBLDX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.08 | ||
| Sortino ratioReturn per unit of downside risk | -0.11 | ||
| Omega ratioGain probability vs. loss probability | 0.98 | 0.99 | -0.01 |
| Calmar ratioReturn relative to maximum drawdown | -0.22 | -0.12 | -0.10 |
| Martin ratioReturn relative to average drawdown | -0.48 | -0.28 | -0.21 |
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Drawdowns
FTLTX vs. DBLDX - Drawdown Comparison
The maximum FTLTX drawdown since its inception was -46.86%, roughly equal to the maximum DBLDX drawdown of -45.96%. Use the drawdown chart below to compare losses from any high point for FTLTX and DBLDX.
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Drawdown Indicators
| FTLTX | DBLDX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -46.86% | -45.96% | -0.90% |
Max Drawdown (1Y)Largest decline over 1 year | -7.38% | -7.84% | +0.46% |
Max Drawdown (3Y)Largest decline over 3 years | -13.45% | -13.31% | -0.14% |
Max Drawdown (5Y)Largest decline over 5 years | -41.52% | -40.48% | -1.04% |
Max Drawdown (10Y)Largest decline over 10 years | — | -45.96% | — |
Current DrawdownCurrent decline from peak | -39.15% | -36.52% | -2.63% |
Average DrawdownAverage peak-to-trough decline | -20.29% | -17.79% | -2.50% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.28% | 3.34% | -0.06% |
Volatility
FTLTX vs. DBLDX - Volatility Comparison
Fidelity Series Long-Term Treasury Bond Index Fund (FTLTX) has a higher volatility of 2.42% compared to DoubleLine Long Duration Total Return Bond Fund (DBLDX) at 2.25%. This indicates that FTLTX's price experiences larger fluctuations and is considered to be riskier than DBLDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FTLTX | DBLDX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.42% | 2.25% | +0.17% |
Volatility (6M)Calculated over the trailing 6-month period | 6.30% | 6.32% | -0.02% |
Volatility (1Y)Calculated over the trailing 1-year period | 8.35% | 8.32% | +0.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 14.46% | 13.30% | +1.16% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 13.79% | 12.25% | +1.54% |
FTLTX vs. DBLDX - Expense Ratio Comparison
FTLTX has a 0.00% expense ratio, which is lower than DBLDX's 0.50% expense ratio.
Dividends
FTLTX vs. DBLDX - Dividend Comparison
FTLTX's dividend yield for the trailing twelve months is around 3.76%, less than DBLDX's 5.13% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
DBLDX DoubleLine Long Duration Total Return Bond Fund | 5.13% | 5.14% | 4.94% | 3.35% | 3.48% | 2.93% | 9.77% | 7.60% | 3.14% | 3.36% | 3.15% | 3.23% |
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% |
Frequently Asked Questions
With a correlation of 0.96, FTLTX and DBLDX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
FTLTX has higher volatility (2.42%) compared to DBLDX (2.25%). In terms of maximum drawdown, FTLTX dropped -46.86% vs DBLDX's -45.96%.
DBLDX currently has the higher Sharpe Ratio (-0.11 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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