PIMIX vs. BMSIX

Last updated Jun 4, 2026

PIMIX (PIMCO Income Fund Institutional Class) and BMSIX (BlackRock Income Fund) are both mutual funds - PIMIX is a Total Bond Market fund managed by PIMCO, while BMSIX is a Multisector Bonds fund managed by BlackRock. Over the past 10 years, PIMIX returned 4.71%/yr vs 3.84%/yr for BMSIX. A 0.72 correlation means they provide meaningful diversification when combined. Both charge a 0.62% expense ratio.

Performance

PIMIX vs. BMSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PIMCO Income Fund Institutional Class (PIMIX) and BlackRock Income Fund (BMSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PIMIX achieves a 1.00% return, which is significantly higher than BMSIX's 0.57% return. Over the past 10 years, PIMIX has outperformed BMSIX with an annualized return of 4.71%, while BMSIX has yielded a comparatively lower 3.84% annualized return.

PIMIX

• 1D: 0.18%
• 1M: 0.91%
• YTD: 1.00%
• 6M: 1.41%
• 1Y: 8.39%
• 3Y*: 7.87%
• 5Y*: 3.53%
• 10Y*: 4.71%

BMSIX

• 1D: 0.11%
• 1M: 0.54%
• YTD: 0.57%
• 6M: 1.06%
• 1Y: 6.10%
• 3Y*: 7.03%
• 5Y*: 1.86%
• 10Y*: 3.84%

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

PIMIX vs. BMSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PIMIX PIMCO Income Fund Institutional Class	1.00%	11.08%	5.45%	9.36%	-9.07%	2.62%	5.84%	8.10%	0.63%	8.63%
BMSIX BlackRock Income Fund	0.57%	8.38%	5.96%	7.84%	-10.08%	-0.29%	6.94%	12.03%	-1.03%	6.62%

Correlation

The correlation between PIMIX and BMSIX is 0.86, 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	0.86
Correlation (3Y) Calculated over the trailing 3-year period	0.89
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (10Y) Calculated over the trailing 10-year period	0.76
Correlation (All Time) Calculated using the full available price history since Mar 2, 2010	0.72

The correlation between PIMIX and BMSIX shifts across timeframes, from 0.72 (all time) to 0.89 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

PIMIX vs. BMSIX — Risk / Return Rank

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

PIMIX

PIMIX Risk / Return Rank: 45
PIMIX Sharpe Ratio Rank: 48
PIMIX Sortino Ratio Rank: 53
PIMIX Omega Ratio Rank: 52
PIMIX Calmar Ratio Rank: 37
PIMIX Martin Ratio Rank: 36

BMSIX

BMSIX Risk / Return Rank: 59
BMSIX Sharpe Ratio Rank: 56
BMSIX Sortino Ratio Rank: 76
BMSIX Omega Ratio Rank: 70
BMSIX Calmar Ratio Rank: 43
BMSIX Martin Ratio Rank: 52

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.

PIMIX vs. BMSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PIMCO Income Fund Institutional Class (PIMIX) and BlackRock Income Fund (BMSIX). 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.

	PIMIX	BMSIX	Difference
Sharpe ratio: Return per unit of total volatility	2.04	2.19	-0.15
Sortino ratio: Return per unit of downside risk	3.07	3.64	-0.57
Omega ratio: Gain probability vs. loss probability	1.40	1.47	-0.07
Calmar ratio: Return relative to maximum drawdown	2.29	2.48	-0.19
Martin ratio: Return relative to average drawdown	7.97	10.59	-2.62
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PIMIX vs. BMSIX - Sharpe Ratio Comparison

The current PIMIX Sharpe Ratio is 2.04, which is comparable to the BMSIX Sharpe Ratio of 2.19. The chart below compares the historical Sharpe Ratios of PIMIX and BMSIX, 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

	PIMIX	BMSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.04	2.19	-0.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.73	0.50	+0.24
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.11	0.93	+0.18
Sharpe Ratio (All Time) Calculated using the full available price history	1.57	1.22	+0.35

Drawdowns

PIMIX vs. BMSIX - Drawdown Comparison

The maximum PIMIX drawdown since its inception was -13.39%, smaller than the maximum BMSIX drawdown of -18.60%. Use the drawdown chart below to compare losses from any high point for PIMIX and BMSIX.

Drawdown Indicators

	PIMIX	BMSIX	Difference
Max Drawdown Largest peak-to-trough decline	-13.39%	-18.60%	+5.21%
Max Drawdown (1Y) Largest decline over 1 year	-3.69%	-2.51%	-1.18%
Max Drawdown (3Y) Largest decline over 3 years	-3.84%	-2.58%	-1.26%
Max Drawdown (5Y) Largest decline over 5 years	-13.34%	-16.52%	+3.18%
Max Drawdown (10Y) Largest decline over 10 years	-13.39%	-18.60%	+5.21%
Current Drawdown Current decline from peak	-0.93%	-0.14%	-0.79%
Average Drawdown Average peak-to-trough decline	-1.69%	-2.04%	+0.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.06%	0.59%	+0.47%

Volatility

PIMIX vs. BMSIX - Volatility Comparison

PIMCO Income Fund Institutional Class (PIMIX) has a higher volatility of 1.68% compared to BlackRock Income Fund (BMSIX) at 1.01%. This indicates that PIMIX's price experiences larger fluctuations and is considered to be riskier than BMSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PIMIX	BMSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.68%	1.01%	+0.67%
Volatility (6M) Calculated over the trailing 6-month period	3.29%	2.29%	+1.00%
Volatility (1Y) Calculated over the trailing 1-year period	4.15%	2.85%	+1.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.84%	3.76%	+1.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.25%	4.15%	+0.10%

PIMIX vs. BMSIX - Expense Ratio Comparison

Both PIMIX and BMSIX have an expense ratio of 0.62%.

Dividends

PIMIX vs. BMSIX - Dividend Comparison

PIMIX's dividend yield for the trailing twelve months is around 5.83%, more than BMSIX's 5.63% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BMSIX BlackRock Income Fund	5.63%	5.66%	5.99%	4.38%	3.71%	5.31%	4.19%	4.90%	5.13%	4.03%	4.49%	4.35%
PIMIX PIMCO Income Fund Institutional Class	5.83%	6.01%	6.27%	6.21%	4.98%	4.02%	4.88%	5.83%	5.66%	5.37%	5.52%	7.88%

Frequently Asked Questions

Can I hold both PIMIX and BMSIX in my portfolio?

PIMIX and BMSIX have a correlation of 0.86, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PIMIX or BMSIX?

PIMIX has higher volatility (1.68%) compared to BMSIX (1.01%). In terms of maximum drawdown, PIMIX dropped -13.39% vs BMSIX's -18.60%.

Which has better risk-adjusted returns?

BMSIX currently has the higher Sharpe Ratio (2.19 vs 2.04), 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.