FSMAX vs. FTKFX

Last updated Jun 4, 2026

FSMAX (Fidelity Extended Market Index Fund) and FTKFX (Fidelity Total Bond K6 Fund) are both mutual funds - FSMAX is a Mid Cap Growth Equities fund managed by Fidelity, while FTKFX is a Total Bond Market fund managed by Fidelity. Over the past 5 years, FSMAX returned 6.91%/yr vs 0.80%/yr for FTKFX. At a 0.08 correlation, their price movements are largely independent. FSMAX charges 0.04%/yr vs 0.30%/yr for FTKFX.

Performance

FSMAX vs. FTKFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Extended Market Index Fund (FSMAX) and Fidelity Total Bond K6 Fund (FTKFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FSMAX achieves a 14.89% return, which is significantly higher than FTKFX's 0.69% return.

FSMAX

• 1D: 1.07%
• 1M: 5.80%
• YTD: 14.89%
• 6M: 13.61%
• 1Y: 30.08%
• 3Y*: 20.13%
• 5Y*: 6.91%
• 10Y*: 12.17%

FTKFX

• 1D: 0.11%
• 1M: 0.49%
• YTD: 0.69%
• 6M: 0.59%
• 1Y: 5.88%
• 3Y*: 4.74%
• 5Y*: 0.80%
• 10Y*: —

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

FSMAX vs. FTKFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSMAX Fidelity Extended Market Index Fund	14.89%	11.40%	16.99%	25.36%	-26.44%	12.41%	32.28%	28.01%	-9.44%	10.96%
FTKFX Fidelity Total Bond K6 Fund	0.69%	7.53%	2.36%	6.65%	-13.23%	-0.46%	8.75%	10.03%	-0.75%	1.14%

Correlation

The correlation between FSMAX and FTKFX 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	0.24
Correlation (5Y) Calculated over the trailing 5-year period	0.18
Correlation (All Time) Calculated using the full available price history since Jun 6, 2017	0.08

The correlation between FSMAX and FTKFX shifts across timeframes, from 0.08 (all time) to 0.26 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

FSMAX vs. FTKFX — Risk / Return Rank

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

FSMAX

FSMAX Risk / Return Rank: 47
FSMAX Sharpe Ratio Rank: 41
FSMAX Sortino Ratio Rank: 39
FSMAX Omega Ratio Rank: 37
FSMAX Calmar Ratio Rank: 66
FSMAX Martin Ratio Rank: 54

FTKFX

FTKFX Risk / Return Rank: 28
FTKFX Sharpe Ratio Rank: 28
FTKFX Sortino Ratio Rank: 29
FTKFX Omega Ratio Rank: 26
FTKFX Calmar Ratio Rank: 31
FTKFX Martin Ratio Rank: 25

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.

FSMAX vs. FTKFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Extended Market Index Fund (FSMAX) and Fidelity Total Bond K6 Fund (FTKFX). 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.

	FSMAX	FTKFX	Difference
Sharpe ratio: Return per unit of total volatility	1.87	1.49	+0.38
Sortino ratio: Return per unit of downside risk	2.60	2.22	+0.38
Omega ratio: Gain probability vs. loss probability	1.32	1.27	+0.05
Calmar ratio: Return relative to maximum drawdown	3.12	2.10	+1.02
Martin ratio: Return relative to average drawdown	11.05	6.24	+4.80
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FSMAX vs. FTKFX - Sharpe Ratio Comparison

The current FSMAX Sharpe Ratio is 1.87, which is comparable to the FTKFX Sharpe Ratio of 1.49. The chart below compares the historical Sharpe Ratios of FSMAX and FTKFX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	FSMAX	FTKFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.87	1.49	+0.38
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.31	0.14	+0.17
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.40	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.46	0.47	-0.01

Drawdowns

FSMAX vs. FTKFX - Drawdown Comparison

The maximum FSMAX drawdown since its inception was -50.55%, which is greater than FTKFX's maximum drawdown of -17.81%. Use the drawdown chart below to compare losses from any high point for FSMAX and FTKFX.

Drawdown Indicators

	FSMAX	FTKFX	Difference
Max Drawdown Largest peak-to-trough decline	-50.55%	-17.81%	-32.74%
Max Drawdown (1Y) Largest decline over 1 year	-10.26%	-2.82%	-7.44%
Max Drawdown (3Y) Largest decline over 3 years	-26.82%	-5.77%	-21.05%
Max Drawdown (5Y) Largest decline over 5 years	-36.31%	-17.81%	-18.50%
Max Drawdown (10Y) Largest decline over 10 years	-50.55%	—	—
Current Drawdown Current decline from peak	0.00%	-1.22%	+1.22%
Average Drawdown Average peak-to-trough decline	-12.17%	-4.19%	-7.98%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.90%	0.95%	+1.95%

Volatility

FSMAX vs. FTKFX - Volatility Comparison

Fidelity Extended Market Index Fund (FSMAX) has a higher volatility of 4.70% compared to Fidelity Total Bond K6 Fund (FTKFX) at 1.35%. This indicates that FSMAX's price experiences larger fluctuations and is considered to be riskier than FTKFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FSMAX	FTKFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.70%	1.35%	+3.35%
Volatility (6M) Calculated over the trailing 6-month period	12.46%	2.91%	+9.55%
Volatility (1Y) Calculated over the trailing 1-year period	17.17%	3.99%	+13.18%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.33%	5.66%	+16.67%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	30.24%	4.92%	+25.32%

FSMAX vs. FTKFX - Expense Ratio Comparison

FSMAX has a 0.04% expense ratio, which is lower than FTKFX's 0.30% expense ratio.

Dividends

FSMAX vs. FTKFX - Dividend Comparison

FSMAX's dividend yield for the trailing twelve months is around 0.50%, less than FTKFX's 4.61% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSMAX Fidelity Extended Market Index Fund	0.50%	0.57%	0.48%	1.17%	1.90%	7.49%	2.14%	4.30%	6.09%	5.44%	4.85%	6.34%
FTKFX Fidelity Total Bond K6 Fund	4.61%	4.61%	4.76%	3.86%	2.53%	2.24%	5.51%	3.26%	2.94%	1.63%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FSMAX and FTKFX in my portfolio?

FSMAX and FTKFX 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, FSMAX or FTKFX?

FSMAX has higher volatility (4.70%) compared to FTKFX (1.35%). In terms of maximum drawdown, FSMAX dropped -50.55% vs FTKFX's -17.81%.

Which has better risk-adjusted returns?

FSMAX currently has the higher Sharpe Ratio (1.87 vs 1.49), 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.