MXBSX vs. FIRMX

Last updated Jul 17, 2026

MXBSX (Great-West Lifetime 2050 Fund) and FIRMX (Fidelity Managed Retirement Income Fund) are both Target Retirement Date funds. A 0.63 correlation means they provide meaningful diversification when combined. MXBSX charges 0.12%/yr vs 0.45%/yr for FIRMX.

Performance

MXBSX vs. FIRMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Great-West Lifetime 2050 Fund (MXBSX) and Fidelity Managed Retirement Income Fund (FIRMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

MXBSX

• 1D: 0.36%
• 1M: 0.21%
• 6M: 8.03%
• YTD: 10.94%
• 1Y: 20.06%
• 3Y*: 15.05%
• 5Y*: 8.39%
• 10Y*: 10.17%

FIRMX

• 1D: —
• 1M: —
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MXBSX vs. FIRMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MXBSX Great-West Lifetime 2050 Fund	10.94%	17.70%	11.16%	17.79%	-16.61%	16.82%	13.96%	26.31%	-10.30%	20.41%
FIRMX Fidelity Managed Retirement Income Fund	3.60%	9.95%	4.29%	8.07%	-11.66%	2.77%	8.57%	10.57%	-1.80%	7.08%

Correlation

The correlation between MXBSX and FIRMX is 0.75, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.75
Correlation (3Y) Calculated over the trailing 3-year period	0.70
Correlation (5Y) Calculated over the trailing 5-year period	0.66
Correlation (10Y) Calculated over the trailing 10-year period	0.63
Correlation (All Time) Calculated using the full available price history since May 4, 2016	0.63

The correlation between MXBSX and FIRMX shifts across timeframes, from 0.63 (10 years) to 0.75 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

MXBSX vs. FIRMX — Risk / Return Rank

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

MXBSX

MXBSX Risk / Return Rank: 51
MXBSX Sharpe Ratio Rank: 47
MXBSX Sortino Ratio Rank: 46
MXBSX Omega Ratio Rank: 48
MXBSX Calmar Ratio Rank: 53
MXBSX Martin Ratio Rank: 60

FIRMX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

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.

MXBSX vs. FIRMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Great-West Lifetime 2050 Fund (MXBSX) and Fidelity Managed Retirement Income Fund (FIRMX). 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.

	MXBSX	FIRMX	Difference
Sharpe ratio: Return per unit of total volatility	1.59	—	—
Sortino ratio: Return per unit of downside risk	2.25	—	—
Omega ratio: Gain probability vs. loss probability	1.30	—	—
Calmar ratio: Return relative to maximum drawdown	2.33	—	—
Martin ratio: Return relative to average drawdown	9.56	—	—

Drawdowns

Drawdown Indicators

	MXBSX	FIRMX	Difference
Max Drawdown Largest peak-to-trough decline	-31.88%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-8.80%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-14.76%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-29.68%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-31.88%	—	—
Current Drawdown Current decline from peak	-0.50%	—	—
Average Drawdown Average peak-to-trough decline	-5.88%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	2.14%	—	—

Volatility

Volatility by Period

	MXBSX	FIRMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.20%	—	—
Volatility (6M) Calculated over the trailing 6-month period	9.82%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	12.95%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.98%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.32%	—	—

MXBSX vs. FIRMX - Expense Ratio Comparison

MXBSX has a 0.12% expense ratio, which is lower than FIRMX's 0.45% expense ratio.

Dividends

MXBSX vs. FIRMX - Dividend Comparison

MXBSX's dividend yield for the trailing twelve months is around 4.75%, more than FIRMX's 3.12% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FIRMX Fidelity Managed Retirement Income Fund	3.12%	3.13%	3.02%	2.81%	4.54%	3.56%	2.48%	2.59%	4.65%	8.57%	1.67%	1.68%
MXBSX Great-West Lifetime 2050 Fund	4.75%	5.27%	7.38%	5.63%	10.66%	11.14%	6.57%	9.46%	8.18%	3.54%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MXBSX and FIRMX in my portfolio?

MXBSX and FIRMX have a correlation of 0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.