PFIIX vs. ECSIX

Last updated Jun 4, 2026

PFIIX (PIMCO Low Duration Income Fund) and ECSIX (Eaton Vance Short Duration Strategic Income Fund) are both mutual funds - PFIIX is a Short-Term Bond fund managed by PIMCO, while ECSIX is a Multisector Bonds fund managed by Eaton Vance. Over the past 10 years, PFIIX returned 4.86%/yr vs 3.96%/yr for ECSIX. At a 0.46 correlation, their price movements are largely independent. PFIIX charges 0.50%/yr vs 1.82%/yr for ECSIX.

Performance

PFIIX vs. ECSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PIMCO Low Duration Income Fund (PFIIX) and Eaton Vance Short Duration Strategic Income Fund (ECSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PFIIX achieves a 1.46% return, which is significantly lower than ECSIX's 1.76% return. Over the past 10 years, PFIIX has outperformed ECSIX with an annualized return of 4.86%, while ECSIX has yielded a comparatively lower 3.96% annualized return.

PFIIX

• 1D: 0.12%
• 1M: 0.77%
• YTD: 1.46%
• 6M: 1.81%
• 1Y: 7.51%
• 3Y*: 7.59%
• 5Y*: 4.08%
• 10Y*: 4.86%

ECSIX

• 1D: 0.00%
• 1M: 0.35%
• YTD: 1.76%
• 6M: 2.21%
• 1Y: 9.05%
• 3Y*: 7.54%
• 5Y*: 4.07%
• 10Y*: 3.96%

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

PFIIX vs. ECSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PFIIX PIMCO Low Duration Income Fund	1.46%	9.56%	6.58%	7.78%	-5.29%	2.38%	4.84%	6.72%	1.56%	6.05%
ECSIX Eaton Vance Short Duration Strategic Income Fund	1.76%	10.19%	5.71%	7.31%	-3.31%	0.69%	6.60%	5.76%	-3.37%	4.04%

Correlation

The correlation between PFIIX and ECSIX is 0.69, 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	0.69
Correlation (3Y) Calculated over the trailing 3-year period	0.65
Correlation (5Y) Calculated over the trailing 5-year period	0.58
Correlation (10Y) Calculated over the trailing 10-year period	0.49
Correlation (All Time) Calculated using the full available price history since Aug 3, 2004	0.46

Over the past year, PFIIX and ECSIX have become more correlated (0.69) than their long-term average of 0.46, meaning their price movements have been converging.

Return for Risk

PFIIX vs. ECSIX — Risk / Return Rank

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

PFIIX

PFIIX Risk / Return Rank: 86
PFIIX Sharpe Ratio Rank: 86
PFIIX Sortino Ratio Rank: 92
PFIIX Omega Ratio Rank: 92
PFIIX Calmar Ratio Rank: 79
PFIIX Martin Ratio Rank: 81

ECSIX

ECSIX Risk / Return Rank: 86
ECSIX Sharpe Ratio Rank: 94
ECSIX Sortino Ratio Rank: 94
ECSIX Omega Ratio Rank: 93
ECSIX Calmar Ratio Rank: 81
ECSIX Martin Ratio Rank: 69

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.

PFIIX vs. ECSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PIMCO Low Duration Income Fund (PFIIX) and Eaton Vance Short Duration Strategic Income Fund (ECSIX). 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.

	PFIIX	ECSIX	Difference
Sharpe ratio: Return per unit of total volatility	2.79	3.21	-0.43
Sortino ratio: Return per unit of downside risk	4.60	4.94	-0.34
Omega ratio: Gain probability vs. loss probability	1.68	1.70	-0.02
Calmar ratio: Return relative to maximum drawdown	3.57	3.74	-0.17
Martin ratio: Return relative to average drawdown	15.28	13.36	+1.93
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PFIIX vs. ECSIX - Sharpe Ratio Comparison

The current PFIIX Sharpe Ratio is 2.79, which is comparable to the ECSIX Sharpe Ratio of 3.21. The chart below compares the historical Sharpe Ratios of PFIIX and ECSIX, 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

	PFIIX	ECSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.79	3.21	-0.43
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.29	1.28	+0.02
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.54	1.25	+0.29
Sharpe Ratio (All Time) Calculated using the full available price history	0.92	1.47	-0.54

Drawdowns

PFIIX vs. ECSIX - Drawdown Comparison

The maximum PFIIX drawdown since its inception was -28.35%, which is greater than ECSIX's maximum drawdown of -12.95%. Use the drawdown chart below to compare losses from any high point for PFIIX and ECSIX.

Drawdown Indicators

	PFIIX	ECSIX	Difference
Max Drawdown Largest peak-to-trough decline	-28.35%	-12.95%	-15.40%
Max Drawdown (1Y) Largest decline over 1 year	-2.16%	-2.43%	+0.27%
Max Drawdown (3Y) Largest decline over 3 years	-2.23%	-2.64%	+0.41%
Max Drawdown (5Y) Largest decline over 5 years	-8.84%	-7.19%	-1.65%
Max Drawdown (10Y) Largest decline over 10 years	-11.72%	-12.53%	+0.81%
Current Drawdown Current decline from peak	0.00%	-0.78%	+0.78%
Average Drawdown Average peak-to-trough decline	-2.60%	-1.34%	-1.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.50%	0.68%	-0.18%

Volatility

PFIIX vs. ECSIX - Volatility Comparison

The current volatility for PIMCO Low Duration Income Fund (PFIIX) is 1.02%, while Eaton Vance Short Duration Strategic Income Fund (ECSIX) has a volatility of 1.12%. This indicates that PFIIX experiences smaller price fluctuations and is considered to be less risky than ECSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PFIIX	ECSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.02%	1.12%	-0.10%
Volatility (6M) Calculated over the trailing 6-month period	2.21%	2.20%	+0.01%
Volatility (1Y) Calculated over the trailing 1-year period	2.77%	2.83%	-0.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.17%	3.21%	-0.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.17%	3.18%	-0.01%

PFIIX vs. ECSIX - Expense Ratio Comparison

PFIIX has a 0.50% expense ratio, which is lower than ECSIX's 1.82% expense ratio.

Dividends

PFIIX vs. ECSIX - Dividend Comparison

PFIIX's dividend yield for the trailing twelve months is around 5.27%, less than ECSIX's 6.33% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ECSIX Eaton Vance Short Duration Strategic Income Fund	6.33%	5.07%	6.21%	6.18%	4.78%	3.54%	3.47%	3.53%	3.19%	2.96%	3.20%	3.54%
PFIIX PIMCO Low Duration Income Fund	5.27%	5.49%	5.37%	4.97%	5.35%	3.06%	3.44%	4.74%	3.22%	3.13%	3.75%	5.36%

Frequently Asked Questions

Can I hold both PFIIX and ECSIX in my portfolio?

PFIIX and ECSIX have a correlation of 0.69, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PFIIX or ECSIX?

ECSIX has higher volatility (1.12%) compared to PFIIX (1.02%). In terms of maximum drawdown, PFIIX dropped -28.35% vs ECSIX's -12.95%.

Which has better risk-adjusted returns?

ECSIX currently has the higher Sharpe Ratio (3.21 vs 2.79), 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.