FTKFX vs. VTBIX
FTKFX (Fidelity Total Bond K6 Fund) and VTBIX (Vanguard Total Bond Market II Index Fund Investor Shares) are both Total Bond Market funds. Over the past 5 years, FTKFX returned 0.11%/yr vs -0.68%/yr for VTBIX. Their correlation of 0.94 means they have usually moved in the same direction. FTKFX charges 0.30%/yr vs 0.09%/yr for VTBIX.
Performance
FTKFX vs. VTBIX - Performance Comparison
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Returns By Period
In the year-to-date period, FTKFX achieves a -0.65% return, which is significantly higher than VTBIX's -1.06% return.
FTKFX
- 1D
- -0.23%
- 1M
- -1.48%
- 6M
- -0.79%
- YTD
- -0.65%
- 1Y
- 1.91%
- 3Y*
- 4.35%
- 5Y*
- 0.11%
- 10Y*
- —
- ALL TIME*
- 2.10%
VTBIX
- 1D
- -0.32%
- 1M
- -1.48%
- 6M
- -1.08%
- YTD
- -1.06%
- 1Y
- 1.31%
- 3Y*
- 3.63%
- 5Y*
- -0.68%
- 10Y*
- 1.16%
- ALL TIME*
- 1.10%
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 |
FTKFX vs. VTBIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FTKFX Fidelity Total Bond K6 Fund | -0.65% | 7.53% | 2.36% | 6.65% | -13.23% | -0.46% | 8.75% | 10.03% | -0.75% | 1.14% |
VTBIX Vanguard Total Bond Market II Index Fund Investor Shares | -1.06% | 7.11% | 1.25% | 5.03% | -13.18% | -1.88% | 7.47% | 8.62% | -0.32% | 0.89% |
Correlation
The correlation between FTKFX and VTBIX is 0.95, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.95 |
Correlation (3Y) Balances recent behavior with more history. | 0.96 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.97 |
Correlation (All Time) Calculated using the full available price history since Jun 5, 2017 | 0.95 |
The correlation between FTKFX and VTBIX has been stable across timeframes, ranging from 0.94 to 0.97 - a consistent structural relationship.
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Return for Risk
FTKFX vs. VTBIX — Risk / Return Rank
FTKFX
VTBIX
FTKFX vs. VTBIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Total Bond K6 Fund (FTKFX) and Vanguard Total Bond Market II Index Fund Investor Shares (VTBIX). 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.
| FTKFX | VTBIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.14 | ||
| Sortino ratioReturn per unit of downside risk | +0.19 | ||
| Omega ratioGain probability vs. loss probability | 1.12 | 1.10 | +0.02 |
| Calmar ratioReturn relative to maximum drawdown | 0.97 | 0.77 | +0.20 |
| Martin ratioReturn relative to average drawdown | 2.41 | 1.87 | +0.54 |
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Drawdowns
FTKFX vs. VTBIX - Drawdown Comparison
The maximum FTKFX drawdown since its inception was -17.81%, roughly equal to the maximum VTBIX drawdown of -18.72%. Use the drawdown chart below to compare losses from any high point for FTKFX and VTBIX.
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Drawdown Indicators
| FTKFX | VTBIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.81% | -18.72% | +0.91% |
Max Drawdown (1Y)Largest decline over 1 year | -2.82% | -2.84% | +0.02% |
Max Drawdown (3Y)Largest decline over 3 years | -4.83% | -4.93% | +0.10% |
Max Drawdown (5Y)Largest decline over 5 years | -17.81% | -17.94% | +0.13% |
Max Drawdown (10Y)Largest decline over 10 years | — | -18.72% | — |
Current DrawdownCurrent decline from peak | -2.54% | -4.31% | +1.77% |
Average DrawdownAverage peak-to-trough decline | -4.14% | -4.41% | +0.27% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.13% | 1.16% | -0.03% |
Volatility
FTKFX vs. VTBIX - Volatility Comparison
The current volatility for Fidelity Total Bond K6 Fund (FTKFX) is 0.96%, while Vanguard Total Bond Market II Index Fund Investor Shares (VTBIX) has a volatility of 1.02%. This indicates that FTKFX experiences smaller price fluctuations and is considered to be less risky than VTBIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FTKFX | VTBIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.96% | 1.02% | -0.06% |
Volatility (6M)Calculated over the trailing 6-month period | 3.07% | 2.97% | +0.10% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.87% | 3.81% | +0.06% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.68% | 5.95% | -0.27% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.90% | 4.92% | -0.02% |
FTKFX vs. VTBIX - Expense Ratio Comparison
FTKFX has a 0.30% expense ratio, which is higher than VTBIX's 0.09% expense ratio.
Dividends
FTKFX vs. VTBIX - Dividend Comparison
FTKFX's dividend yield for the trailing twelve months is around 4.27%, more than VTBIX's 3.72% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FTKFX Fidelity Total Bond K6 Fund | 4.27% | 4.61% | 4.76% | 3.86% | 2.53% | 2.24% | 5.51% | 3.26% | 2.94% | 1.63% | 0.00% | 0.00% |
VTBIX Vanguard Total Bond Market II Index Fund Investor Shares | 3.72% | 3.88% | 3.70% | 2.53% | 2.47% | 1.75% | 3.20% | 2.72% | 2.51% | 2.43% | 2.48% | 2.64% |
Frequently Asked Questions
With a correlation of 0.95, FTKFX and VTBIX 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.
VTBIX has higher volatility (1.02%) compared to FTKFX (0.96%). In terms of maximum drawdown, FTKFX dropped -17.81% vs VTBIX's -18.72%.
FTKFX currently has the higher Sharpe Ratio (0.71 vs 0.57), 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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