SIGAX vs. PRPIX

Last updated Jun 4, 2026

SIGAX (Western Asset Corporate Bond Fund) and PRPIX (T. Rowe Price Corporate Income Fund) are both Corporate Bonds funds. Over the past 10 years, SIGAX returned 2.57%/yr vs 2.74%/yr for PRPIX. Their correlation of 0.87 suggests significant overlap in exposure. SIGAX charges 0.88%/yr vs 0.56%/yr for PRPIX.

Performance

SIGAX vs. PRPIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Western Asset Corporate Bond Fund (SIGAX) and T. Rowe Price Corporate Income Fund (PRPIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both stocks are quite close, with SIGAX having a 0.41% return and PRPIX slightly lower at 0.40%. Over the past 10 years, SIGAX has underperformed PRPIX with an annualized return of 2.57%, while PRPIX has yielded a comparatively higher 2.74% annualized return.

SIGAX

• 1D: 0.00%
• 1M: 0.89%
• YTD: 0.41%
• 6M: 0.36%
• 1Y: 6.43%
• 3Y*: 4.79%
• 5Y*: -0.21%
• 10Y*: 2.57%

PRPIX

• 1D: 0.00%
• 1M: 0.90%
• YTD: 0.40%
• 6M: 0.85%
• 1Y: 7.91%
• 3Y*: 6.62%
• 5Y*: 0.98%
• 10Y*: 2.74%

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

SIGAX vs. PRPIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SIGAX Western Asset Corporate Bond Fund	0.41%	8.16%	1.19%	6.96%	-17.20%	-1.17%	10.81%	14.42%	-3.64%	7.20%
PRPIX T. Rowe Price Corporate Income Fund	0.40%	9.66%	4.02%	9.47%	-17.71%	-0.76%	7.87%	15.77%	-3.05%	6.58%

Correlation

The correlation between SIGAX and PRPIX is 0.87, 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	0.87
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Jan 3, 1996	0.87

The correlation between SIGAX and PRPIX has been stable across timeframes, ranging from 0.87 to 0.94 - a consistent structural relationship.

Return for Risk

SIGAX vs. PRPIX — Risk / Return Rank

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

SIGAX

SIGAX Risk / Return Rank: 28
SIGAX Sharpe Ratio Rank: 29
SIGAX Sortino Ratio Rank: 31
SIGAX Omega Ratio Rank: 28
SIGAX Calmar Ratio Rank: 24
SIGAX Martin Ratio Rank: 27

PRPIX

PRPIX Risk / Return Rank: 44
PRPIX Sharpe Ratio Rank: 44
PRPIX Sortino Ratio Rank: 49
PRPIX Omega Ratio Rank: 44
PRPIX Calmar Ratio Rank: 42
PRPIX Martin Ratio Rank: 39

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.

SIGAX vs. PRPIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Western Asset Corporate Bond Fund (SIGAX) and T. Rowe Price Corporate Income Fund (PRPIX). 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.

	SIGAX	PRPIX	Difference
Sharpe ratio: Return per unit of total volatility	1.54	1.94	-0.40
Sortino ratio: Return per unit of downside risk	2.33	2.94	-0.62
Omega ratio: Gain probability vs. loss probability	1.28	1.36	-0.08
Calmar ratio: Return relative to maximum drawdown	1.83	2.46	-0.63
Martin ratio: Return relative to average drawdown	6.47	8.53	-2.06
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SIGAX vs. PRPIX - Sharpe Ratio Comparison

The current SIGAX Sharpe Ratio is 1.54, which is comparable to the PRPIX Sharpe Ratio of 1.94. The chart below compares the historical Sharpe Ratios of SIGAX and PRPIX, 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

	SIGAX	PRPIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.54	1.94	-0.40
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.03	0.15	-0.18
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.42	0.46	-0.04
Sharpe Ratio (All Time) Calculated using the full available price history	0.73	0.87	-0.14

Drawdowns

SIGAX vs. PRPIX - Drawdown Comparison

The maximum SIGAX drawdown since its inception was -30.99%, which is greater than PRPIX's maximum drawdown of -24.24%. Use the drawdown chart below to compare losses from any high point for SIGAX and PRPIX.

Drawdown Indicators

	SIGAX	PRPIX	Difference
Max Drawdown Largest peak-to-trough decline	-30.99%	-24.24%	-6.75%
Max Drawdown (1Y) Largest decline over 1 year	-3.58%	-3.29%	-0.29%
Max Drawdown (3Y) Largest decline over 3 years	-7.52%	-6.30%	-1.22%
Max Drawdown (5Y) Largest decline over 5 years	-23.62%	-24.24%	+0.62%
Max Drawdown (10Y) Largest decline over 10 years	-23.62%	-24.24%	+0.62%
Current Drawdown Current decline from peak	-4.38%	-0.79%	-3.59%
Average Drawdown Average peak-to-trough decline	-5.02%	-3.14%	-1.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.01%	0.95%	+0.06%

Volatility

SIGAX vs. PRPIX - Volatility Comparison

Western Asset Corporate Bond Fund (SIGAX) and T. Rowe Price Corporate Income Fund (PRPIX) have volatilities of 1.48% and 1.45%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SIGAX	PRPIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.48%	1.45%	+0.03%
Volatility (6M) Calculated over the trailing 6-month period	3.14%	3.08%	+0.06%
Volatility (1Y) Calculated over the trailing 1-year period	4.26%	4.17%	+0.09%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.78%	6.59%	+0.19%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.14%	6.02%	+0.12%

SIGAX vs. PRPIX - Expense Ratio Comparison

SIGAX has a 0.88% expense ratio, which is higher than PRPIX's 0.56% expense ratio.

Dividends

SIGAX vs. PRPIX - Dividend Comparison

SIGAX's dividend yield for the trailing twelve months is around 4.45%, less than PRPIX's 6.28% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PRPIX T. Rowe Price Corporate Income Fund	6.28%	6.30%	5.97%	4.72%	2.42%	5.61%	3.82%	5.47%	3.47%	3.95%	3.20%	4.23%
SIGAX Western Asset Corporate Bond Fund	4.45%	4.86%	4.15%	4.17%	3.30%	3.03%	4.33%	3.78%	3.85%	3.44%	3.82%	4.34%

Frequently Asked Questions

Can I hold both SIGAX and PRPIX in my portfolio?

SIGAX and PRPIX have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SIGAX or PRPIX?

SIGAX has higher volatility (1.48%) compared to PRPIX (1.45%). In terms of maximum drawdown, SIGAX dropped -30.99% vs PRPIX's -24.24%.

Which has better risk-adjusted returns?

PRPIX currently has the higher Sharpe Ratio (1.94 vs 1.54), 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.