FIRSX vs. FRKMX

Last updated Jun 4, 2026

FIRSX (Fidelity Managed Retirement 2015 Fund) and FRKMX (Fidelity Managed Retirement Income Fund Class K) are both Target Retirement Date funds from BlackRock. Over the past 5 years, FIRSX returned 3.44%/yr vs 2.99%/yr for FRKMX. With a 0.96 correlation, they move nearly in lockstep. FIRSX charges 0.46%/yr vs 0.35%/yr for FRKMX.

Performance

FIRSX vs. FRKMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Managed Retirement 2015 Fund (FIRSX) and Fidelity Managed Retirement Income Fund Class K (FRKMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FIRSX achieves a 4.77% return, which is significantly higher than FRKMX's 4.09% return.

FIRSX

• 1D: 0.24%
• 1M: 1.84%
• YTD: 4.77%
• 6M: 5.08%
• 1Y: 12.05%
• 3Y*: 8.72%
• 5Y*: 3.44%
• 10Y*: 5.71%

FRKMX

• 1D: 0.21%
• 1M: 1.55%
• YTD: 4.09%
• 6M: 4.31%
• 1Y: 10.51%
• 3Y*: 7.64%
• 5Y*: 2.99%
• 10Y*: —

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

FIRSX vs. FRKMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
FIRSX Fidelity Managed Retirement 2015 Fund	4.77%	11.12%	5.17%	9.63%	-13.52%	5.32%	10.88%	4.73%
FRKMX Fidelity Managed Retirement Income Fund Class K	4.09%	9.91%	4.40%	8.17%	-11.57%	2.88%	8.68%	3.08%

Correlation

The correlation between FIRSX and FRKMX is 0.99 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.99
Correlation (3Y) Calculated over the trailing 3-year period	0.99
Correlation (5Y) Calculated over the trailing 5-year period	0.98
Correlation (All Time) Calculated using the full available price history since Aug 2, 2019	0.96

The correlation between FIRSX and FRKMX has been stable across timeframes, ranging from 0.96 to 0.99 - a consistent structural relationship.

Return for Risk

FIRSX vs. FRKMX — Risk / Return Rank

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

FIRSX

FIRSX Risk / Return Rank: 72
FIRSX Sharpe Ratio Rank: 75
FIRSX Sortino Ratio Rank: 76
FIRSX Omega Ratio Rank: 77
FIRSX Calmar Ratio Rank: 65
FIRSX Martin Ratio Rank: 69

FRKMX

FRKMX Risk / Return Rank: 73
FRKMX Sharpe Ratio Rank: 78
FRKMX Sortino Ratio Rank: 79
FRKMX Omega Ratio Rank: 78
FRKMX Calmar Ratio Rank: 64
FRKMX Martin Ratio Rank: 68

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.

FIRSX vs. FRKMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Managed Retirement 2015 Fund (FIRSX) and Fidelity Managed Retirement Income Fund Class K (FRKMX). 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.

	FIRSX	FRKMX	Difference
Sharpe ratio: Return per unit of total volatility	2.53	2.55	-0.02
Sortino ratio: Return per unit of downside risk	3.70	3.76	-0.06
Omega ratio: Gain probability vs. loss probability	1.51	1.51	-0.01
Calmar ratio: Return relative to maximum drawdown	3.10	3.10	-0.01
Martin ratio: Return relative to average drawdown	13.28	13.23	+0.05
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FIRSX vs. FRKMX - Sharpe Ratio Comparison

The current FIRSX Sharpe Ratio is 2.53, which is comparable to the FRKMX Sharpe Ratio of 2.55. The chart below compares the historical Sharpe Ratios of FIRSX and FRKMX, 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

	FIRSX	FRKMX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.53	2.55	-0.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.54	0.57	-0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.90	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.53	0.80	-0.27

Drawdowns

FIRSX vs. FRKMX - Drawdown Comparison

The maximum FIRSX drawdown since its inception was -40.08%, which is greater than FRKMX's maximum drawdown of -16.04%. Use the drawdown chart below to compare losses from any high point for FIRSX and FRKMX.

Drawdown Indicators

	FIRSX	FRKMX	Difference
Max Drawdown Largest peak-to-trough decline	-40.08%	-16.04%	-24.04%
Max Drawdown (1Y) Largest decline over 1 year	-3.92%	-3.42%	-0.50%
Max Drawdown (3Y) Largest decline over 3 years	-5.86%	-4.93%	-0.93%
Max Drawdown (5Y) Largest decline over 5 years	-18.54%	-16.04%	-2.50%
Max Drawdown (10Y) Largest decline over 10 years	-18.54%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-4.89%	-3.56%	-1.33%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.91%	0.80%	+0.11%

Volatility

FIRSX vs. FRKMX - Volatility Comparison

Fidelity Managed Retirement 2015 Fund (FIRSX) has a higher volatility of 1.88% compared to Fidelity Managed Retirement Income Fund Class K (FRKMX) at 1.67%. This indicates that FIRSX's price experiences larger fluctuations and is considered to be riskier than FRKMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FIRSX	FRKMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.88%	1.67%	+0.21%
Volatility (6M) Calculated over the trailing 6-month period	3.98%	3.42%	+0.56%
Volatility (1Y) Calculated over the trailing 1-year period	4.81%	4.15%	+0.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.38%	5.29%	+1.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.35%	5.14%	+1.21%

FIRSX vs. FRKMX - Expense Ratio Comparison

FIRSX has a 0.46% expense ratio, which is higher than FRKMX's 0.35% expense ratio.

Dividends

FIRSX vs. FRKMX - Dividend Comparison

FIRSX's dividend yield for the trailing twelve months is around 2.88%, less than FRKMX's 3.20% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FIRSX Fidelity Managed Retirement 2015 Fund	2.88%	3.01%	2.89%	2.68%	4.92%	5.21%	3.39%	3.24%	6.33%	24.28%	2.04%	4.48%
FRKMX Fidelity Managed Retirement Income Fund Class K	3.20%	3.11%	3.12%	2.92%	4.66%	3.65%	2.56%	1.85%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FIRSX and FRKMX in my portfolio?

With a correlation of 0.99, FIRSX and FRKMX 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.

Which is riskier, FIRSX or FRKMX?

FIRSX has higher volatility (1.88%) compared to FRKMX (1.67%). In terms of maximum drawdown, FIRSX dropped -40.08% vs FRKMX's -16.04%.

Which has better risk-adjusted returns?

FRKMX currently has the higher Sharpe Ratio (2.55 vs 2.53), 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.