MBLAX vs. FSIRX

Last updated Jun 4, 2026

MBLAX (Madison Diversified Income Fund) and FSIRX (Fidelity Advisor Strategic Real Return Fund Class I) are both Diversified Portfolio funds. Over the past 10 years, MBLAX returned 6.53%/yr vs 5.76%/yr for FSIRX. A 0.55 correlation means they provide meaningful diversification when combined. MBLAX charges 1.11%/yr vs 0.70%/yr for FSIRX.

Performance

MBLAX vs. FSIRX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Madison Diversified Income Fund (MBLAX) and Fidelity Advisor Strategic Real Return Fund Class I (FSIRX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MBLAX achieves a 3.79% return, which is significantly lower than FSIRX's 8.74% return. Over the past 10 years, MBLAX has outperformed FSIRX with an annualized return of 6.53%, while FSIRX has yielded a comparatively lower 5.76% annualized return.

MBLAX

• 1D: 0.23%
• 1M: 0.44%
• YTD: 3.79%
• 6M: 3.67%
• 1Y: 8.60%
• 3Y*: 7.23%
• 5Y*: 2.93%
• 10Y*: 6.53%

FSIRX

• 1D: 0.31%
• 1M: 0.10%
• YTD: 8.74%
• 6M: 8.99%
• 1Y: 16.71%
• 3Y*: 10.15%
• 5Y*: 6.36%
• 10Y*: 5.76%

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

MBLAX vs. FSIRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MBLAX Madison Diversified Income Fund	3.79%	6.70%	4.80%	3.38%	-7.99%	14.42%	7.57%	19.28%	-1.22%	12.84%
FSIRX Fidelity Advisor Strategic Real Return Fund Class I	8.74%	10.38%	5.83%	4.58%	-3.34%	15.89%	3.72%	10.55%	-3.99%	4.10%

Correlation

The correlation between MBLAX and FSIRX is 0.52, 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	0.52
Correlation (3Y) Calculated over the trailing 3-year period	0.66
Correlation (5Y) Calculated over the trailing 5-year period	0.68
Correlation (10Y) Calculated over the trailing 10-year period	0.60
Correlation (All Time) Calculated using the full available price history since Sep 12, 2005	0.55

The correlation between MBLAX and FSIRX shifts across timeframes, from 0.52 (1 year) to 0.68 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

MBLAX vs. FSIRX — Risk / Return Rank

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

MBLAX

MBLAX Risk / Return Rank: 45
MBLAX Sharpe Ratio Rank: 43
MBLAX Sortino Ratio Rank: 46
MBLAX Omega Ratio Rank: 44
MBLAX Calmar Ratio Rank: 49
MBLAX Martin Ratio Rank: 44

FSIRX

FSIRX Risk / Return Rank: 96
FSIRX Sharpe Ratio Rank: 96
FSIRX Sortino Ratio Rank: 94
FSIRX Omega Ratio Rank: 92
FSIRX Calmar Ratio Rank: 98
FSIRX Martin Ratio Rank: 98

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.

MBLAX vs. FSIRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Madison Diversified Income Fund (MBLAX) and Fidelity Advisor Strategic Real Return Fund Class I (FSIRX). 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.

	MBLAX	FSIRX	Difference
Sharpe ratio: Return per unit of total volatility	1.93	3.51	-1.58
Sortino ratio: Return per unit of downside risk	2.87	4.92	-2.05
Omega ratio: Gain probability vs. loss probability	1.36	1.70	-0.33
Calmar ratio: Return relative to maximum drawdown	2.65	8.10	-5.45
Martin ratio: Return relative to average drawdown	9.36	31.92	-22.56
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MBLAX vs. FSIRX - Sharpe Ratio Comparison

The current MBLAX Sharpe Ratio is 1.93, which is lower than the FSIRX Sharpe Ratio of 3.51. The chart below compares the historical Sharpe Ratios of MBLAX and FSIRX, 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

	MBLAX	FSIRX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.93	3.51	-1.58
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.28	0.92	-0.65
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.60	0.86	-0.26
Sharpe Ratio (All Time) Calculated using the full available price history	0.59	0.61	-0.02

Drawdowns

MBLAX vs. FSIRX - Drawdown Comparison

The maximum MBLAX drawdown since its inception was -26.64%, smaller than the maximum FSIRX drawdown of -33.39%. Use the drawdown chart below to compare losses from any high point for MBLAX and FSIRX.

Drawdown Indicators

	MBLAX	FSIRX	Difference
Max Drawdown Largest peak-to-trough decline	-26.64%	-33.39%	+6.75%
Max Drawdown (1Y) Largest decline over 1 year	-3.42%	-2.05%	-1.37%
Max Drawdown (3Y) Largest decline over 3 years	-7.37%	-5.81%	-1.56%
Max Drawdown (5Y) Largest decline over 5 years	-23.81%	-12.82%	-10.99%
Max Drawdown (10Y) Largest decline over 10 years	-23.81%	-19.98%	-3.83%
Current Drawdown Current decline from peak	-0.74%	-0.73%	-0.01%
Average Drawdown Average peak-to-trough decline	-4.75%	-4.17%	-0.58%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.97%	0.52%	+0.45%

Volatility

MBLAX vs. FSIRX - Volatility Comparison

The current volatility for Madison Diversified Income Fund (MBLAX) is 1.14%, while Fidelity Advisor Strategic Real Return Fund Class I (FSIRX) has a volatility of 1.32%. This indicates that MBLAX experiences smaller price fluctuations and is considered to be less risky than FSIRX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MBLAX	FSIRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.14%	1.32%	-0.18%
Volatility (6M) Calculated over the trailing 6-month period	3.44%	3.77%	-0.33%
Volatility (1Y) Calculated over the trailing 1-year period	4.69%	4.75%	-0.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.56%	6.92%	+3.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.94%	6.74%	+4.20%

MBLAX vs. FSIRX - Expense Ratio Comparison

MBLAX has a 1.11% expense ratio, which is higher than FSIRX's 0.70% expense ratio.

Dividends

MBLAX vs. FSIRX - Dividend Comparison

MBLAX's dividend yield for the trailing twelve months is around 4.41%, more than FSIRX's 4.18% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSIRX Fidelity Advisor Strategic Real Return Fund Class I	4.18%	4.72%	4.80%	5.28%	7.33%	5.37%	2.23%	3.09%	9.42%	2.63%	2.37%	1.75%
MBLAX Madison Diversified Income Fund	4.41%	4.92%	7.37%	15.29%	8.09%	12.04%	2.77%	6.69%	10.66%	3.14%	5.38%	4.00%

Frequently Asked Questions

Can I hold both MBLAX and FSIRX in my portfolio?

MBLAX and FSIRX have a correlation of 0.52, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MBLAX or FSIRX?

FSIRX has higher volatility (1.32%) compared to MBLAX (1.14%). In terms of maximum drawdown, MBLAX dropped -26.64% vs FSIRX's -33.39%.

Which has better risk-adjusted returns?

FSIRX currently has the higher Sharpe Ratio (3.51 vs 1.93), 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.