BLDIX vs. CSTAX

Last updated Jun 4, 2026

BLDIX (BlackRock Managed Income Fund) and CSTAX (American Funds College 2027 Fund) are both Diversified Portfolio funds. Over the past 10 years, BLDIX returned 4.37%/yr vs 4.99%/yr for CSTAX. At a 0.45 correlation, their price movements are largely independent. Both charge a 0.41% expense ratio.

Performance

BLDIX vs. CSTAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BlackRock Managed Income Fund (BLDIX) and American Funds College 2027 Fund (CSTAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BLDIX achieves a 2.15% return, which is significantly higher than CSTAX's 1.47% return. Over the past 10 years, BLDIX has underperformed CSTAX with an annualized return of 4.37%, while CSTAX has yielded a comparatively higher 4.99% annualized return.

BLDIX

• 1D: 0.00%
• 1M: 1.09%
• YTD: 2.15%
• 6M: 2.37%
• 1Y: 8.08%
• 3Y*: 7.37%
• 5Y*: 3.43%
• 10Y*: 4.37%

CSTAX

• 1D: 0.08%
• 1M: 0.65%
• YTD: 1.47%
• 6M: 1.68%
• 1Y: 6.99%
• 3Y*: 6.87%
• 5Y*: 2.83%
• 10Y*: 4.99%

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

BLDIX vs. CSTAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BLDIX BlackRock Managed Income Fund	2.15%	9.87%	5.19%	8.69%	-9.88%	5.26%	5.81%	9.78%	-0.64%	5.32%
CSTAX American Funds College 2027 Fund	1.47%	9.00%	5.57%	6.57%	-9.87%	6.52%	7.66%	13.35%	-2.23%	11.77%

Correlation

The correlation between BLDIX and CSTAX is 0.85, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.89
Correlation (5Y) Calculated over the trailing 5-year period	0.88
Correlation (10Y) Calculated over the trailing 10-year period	0.74
Correlation (All Time) Calculated using the full available price history since Jan 3, 2013	0.45

Over the past year, BLDIX and CSTAX have become more correlated (0.85) than their long-term average of 0.45, meaning their price movements have been converging.

Return for Risk

BLDIX vs. CSTAX — Risk / Return Rank

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

BLDIX

BLDIX Risk / Return Rank: 41
BLDIX Sharpe Ratio Rank: 42
BLDIX Sortino Ratio Rank: 45
BLDIX Omega Ratio Rank: 47
BLDIX Calmar Ratio Rank: 31
BLDIX Martin Ratio Rank: 41

CSTAX

CSTAX Risk / Return Rank: 60
CSTAX Sharpe Ratio Rank: 64
CSTAX Sortino Ratio Rank: 71
CSTAX Omega Ratio Rank: 70
CSTAX Calmar Ratio Rank: 47
CSTAX Martin Ratio Rank: 49

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.

BLDIX vs. CSTAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock Managed Income Fund (BLDIX) and American Funds College 2027 Fund (CSTAX). 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.

	BLDIX	CSTAX	Difference
Sharpe ratio: Return per unit of total volatility	1.89	2.34	-0.45
Sortino ratio: Return per unit of downside risk	2.83	3.52	-0.69
Omega ratio: Gain probability vs. loss probability	1.37	1.47	-0.09
Calmar ratio: Return relative to maximum drawdown	2.10	2.61	-0.51
Martin ratio: Return relative to average drawdown	8.78	10.06	-1.28
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BLDIX vs. CSTAX - Sharpe Ratio Comparison

The current BLDIX Sharpe Ratio is 1.89, which is comparable to the CSTAX Sharpe Ratio of 2.34. The chart below compares the historical Sharpe Ratios of BLDIX and CSTAX, 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

	BLDIX	CSTAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.89	2.34	-0.45
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.65	0.55	+0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.79	0.86	-0.08
Sharpe Ratio (All Time) Calculated using the full available price history	0.69	0.88	-0.19

Drawdowns

BLDIX vs. CSTAX - Drawdown Comparison

The maximum BLDIX drawdown since its inception was -14.47%, roughly equal to the maximum CSTAX drawdown of -14.52%. Use the drawdown chart below to compare losses from any high point for BLDIX and CSTAX.

Drawdown Indicators

	BLDIX	CSTAX	Difference
Max Drawdown Largest peak-to-trough decline	-14.47%	-14.52%	+0.05%
Max Drawdown (1Y) Largest decline over 1 year	-3.87%	-2.72%	-1.15%
Max Drawdown (3Y) Largest decline over 3 years	-5.03%	-4.89%	-0.14%
Max Drawdown (5Y) Largest decline over 5 years	-14.17%	-14.52%	+0.35%
Max Drawdown (10Y) Largest decline over 10 years	-14.33%	-14.52%	+0.19%
Current Drawdown Current decline from peak	-0.03%	-0.40%	+0.37%
Average Drawdown Average peak-to-trough decline	-2.81%	-2.35%	-0.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.92%	0.70%	+0.22%

Volatility

BLDIX vs. CSTAX - Volatility Comparison

BlackRock Managed Income Fund (BLDIX) has a higher volatility of 1.57% compared to American Funds College 2027 Fund (CSTAX) at 1.11%. This indicates that BLDIX's price experiences larger fluctuations and is considered to be riskier than CSTAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BLDIX	CSTAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.57%	1.11%	+0.46%
Volatility (6M) Calculated over the trailing 6-month period	3.36%	2.32%	+1.04%
Volatility (1Y) Calculated over the trailing 1-year period	4.29%	3.03%	+1.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.31%	5.16%	+0.15%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.58%	5.79%	-0.21%

BLDIX vs. CSTAX - Expense Ratio Comparison

Both BLDIX and CSTAX have an expense ratio of 0.41%.

Dividends

BLDIX vs. CSTAX - Dividend Comparison

BLDIX's dividend yield for the trailing twelve months is around 5.45%, more than CSTAX's 5.19% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BLDIX BlackRock Managed Income Fund	5.45%	5.46%	5.76%	3.55%	3.86%	4.87%	3.53%	3.87%	4.27%	4.48%	4.15%	2.87%
CSTAX American Funds College 2027 Fund	5.19%	5.26%	3.78%	3.17%	3.40%	7.52%	5.72%	4.00%	4.78%	3.90%	4.34%	4.49%

Frequently Asked Questions

Can I hold both BLDIX and CSTAX in my portfolio?

BLDIX and CSTAX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BLDIX or CSTAX?

BLDIX has higher volatility (1.57%) compared to CSTAX (1.11%). In terms of maximum drawdown, BLDIX dropped -14.47% vs CSTAX's -14.52%.

Which has better risk-adjusted returns?

CSTAX currently has the higher Sharpe Ratio (2.34 vs 1.89), 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.