PRTBX vs. PYLMX

Last updated Jun 5, 2026

PRTBX (Permanent Portfolio Short-Term Treasury Portfolio) and PYLMX (Payden Limited Maturity Fund) are both Ultrashort Bond funds. Over the past 10 years, PRTBX returned 1.26%/yr vs 2.77%/yr for PYLMX. At a 0.15 correlation, their price movements are largely independent. PRTBX charges 0.65%/yr vs 0.25%/yr for PYLMX.

Performance

PRTBX vs. PYLMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Permanent Portfolio Short-Term Treasury Portfolio (PRTBX) and Payden Limited Maturity Fund (PYLMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PRTBX achieves a 0.75% return, which is significantly lower than PYLMX's 1.39% return. Over the past 10 years, PRTBX has underperformed PYLMX with an annualized return of 1.26%, while PYLMX has yielded a comparatively higher 2.77% annualized return.

PRTBX

• 1D: -0.02%
• 1M: 0.15%
• YTD: 0.75%
• 6M: 1.02%
• 1Y: 3.05%
• 3Y*: 3.85%
• 5Y*: 1.98%
• 10Y*: 1.26%

PYLMX

• 1D: 0.00%
• 1M: 0.37%
• YTD: 1.39%
• 6M: 1.90%
• 1Y: 4.50%
• 3Y*: 5.24%
• 5Y*: 3.70%
• 10Y*: 2.77%

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

PRTBX vs. PYLMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PRTBX Permanent Portfolio Short-Term Treasury Portfolio	0.75%	4.19%	4.12%	3.79%	-2.28%	-0.74%	0.10%	1.76%	1.16%	0.12%
PYLMX Payden Limited Maturity Fund	1.39%	5.22%	6.08%	5.34%	0.56%	0.19%	1.85%	3.34%	1.76%	1.64%

Correlation

The correlation between PRTBX and PYLMX is 0.53, 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	0.53
Correlation (3Y) Calculated over the trailing 3-year period	0.43
Correlation (5Y) Calculated over the trailing 5-year period	0.38
Correlation (10Y) Calculated over the trailing 10-year period	0.25
Correlation (All Time) Calculated using the full available price history since Jan 4, 1995	0.15

Over the past year, PRTBX and PYLMX have become more correlated (0.53) than their long-term average of 0.15, meaning their price movements have been converging.

Return for Risk

PRTBX vs. PYLMX — Risk / Return Rank

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

PRTBX

PRTBX Risk / Return Rank: 99
PRTBX Sharpe Ratio Rank: 99
PRTBX Sortino Ratio Rank: 99
PRTBX Omega Ratio Rank: 98
PRTBX Calmar Ratio Rank: 99
PRTBX Martin Ratio Rank: 99

PYLMX

PYLMX Risk / Return Rank: 97
PYLMX Sharpe Ratio Rank: 90
PYLMX Sortino Ratio Rank: 99
PYLMX Omega Ratio Rank: 98
PYLMX Calmar Ratio Rank: 98
PYLMX 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.

PRTBX vs. PYLMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Permanent Portfolio Short-Term Treasury Portfolio (PRTBX) and Payden Limited Maturity Fund (PYLMX). 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.

	PRTBX	PYLMX	Difference
Sharpe ratio: Return per unit of total volatility	4.70	2.96	+1.74
Sortino ratio: Return per unit of downside risk	8.77	8.04	+0.73
Omega ratio: Gain probability vs. loss probability	2.25	2.49	-0.24
Calmar ratio: Return relative to maximum drawdown	9.97	8.87	+1.10
Martin ratio: Return relative to average drawdown	48.35	38.00	+10.36
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PRTBX vs. PYLMX - Sharpe Ratio Comparison

The current PRTBX Sharpe Ratio is 4.70, which is higher than the PYLMX Sharpe Ratio of 2.96. The chart below compares the historical Sharpe Ratios of PRTBX and PYLMX, 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

	PRTBX	PYLMX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	4.70	2.96	+1.74
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.65	2.74	-1.09
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.46	2.13	-0.67
Sharpe Ratio (All Time) Calculated using the full available price history	3.89	2.39	+1.50

Drawdowns

PRTBX vs. PYLMX - Drawdown Comparison

The maximum PRTBX drawdown since its inception was -5.13%, smaller than the maximum PYLMX drawdown of -5.56%. Use the drawdown chart below to compare losses from any high point for PRTBX and PYLMX.

Drawdown Indicators

	PRTBX	PYLMX	Difference
Max Drawdown Largest peak-to-trough decline	-5.13%	-5.56%	+0.43%
Max Drawdown (1Y) Largest decline over 1 year	-0.32%	-0.52%	+0.20%
Max Drawdown (3Y) Largest decline over 3 years	-0.44%	-0.52%	+0.08%
Max Drawdown (5Y) Largest decline over 5 years	-3.70%	-1.24%	-2.46%
Max Drawdown (10Y) Largest decline over 10 years	-4.36%	-5.56%	+1.20%
Current Drawdown Current decline from peak	-0.03%	0.00%	-0.03%
Average Drawdown Average peak-to-trough decline	-0.96%	-0.16%	-0.80%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.07%	0.12%	-0.05%

Volatility

PRTBX vs. PYLMX - Volatility Comparison

The current volatility for Permanent Portfolio Short-Term Treasury Portfolio (PRTBX) is 0.15%, while Payden Limited Maturity Fund (PYLMX) has a volatility of 0.48%. This indicates that PRTBX experiences smaller price fluctuations and is considered to be less risky than PYLMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PRTBX	PYLMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.15%	0.48%	-0.33%
Volatility (6M) Calculated over the trailing 6-month period	0.40%	1.09%	-0.69%
Volatility (1Y) Calculated over the trailing 1-year period	0.68%	1.56%	-0.88%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.21%	1.36%	-0.15%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.86%	1.31%	-0.45%

PRTBX vs. PYLMX - Expense Ratio Comparison

PRTBX has a 0.65% expense ratio, which is higher than PYLMX's 0.25% expense ratio.

Dividends

PRTBX vs. PYLMX - Dividend Comparison

PRTBX's dividend yield for the trailing twelve months is around 3.36%, less than PYLMX's 4.51% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PRTBX Permanent Portfolio Short-Term Treasury Portfolio	3.36%	3.39%	2.69%	1.79%	0.00%	0.00%	0.21%	1.65%	0.83%	0.00%	0.00%	0.00%
PYLMX Payden Limited Maturity Fund	4.51%	4.96%	5.36%	3.79%	1.83%	0.50%	1.39%	2.54%	2.28%	1.42%	0.91%	0.73%

Frequently Asked Questions

Can I hold both PRTBX and PYLMX in my portfolio?

PRTBX and PYLMX have a correlation of 0.53, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PRTBX or PYLMX?

PYLMX has higher volatility (0.48%) compared to PRTBX (0.15%). In terms of maximum drawdown, PRTBX dropped -5.13% vs PYLMX's -5.56%.

Which has better risk-adjusted returns?

PRTBX currently has the higher Sharpe Ratio (4.70 vs 2.96), 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.