UKPIX vs. PSTIX

Last updated Aug 1, 2026

UKPIX (ProFunds Ultra Short Japan Fund) and PSTIX (PIMCO StocksPLUS Short Fund) are both Inverse Equities funds. Over the past 10 years, UKPIX returned -15.97%/yr vs -9.92%/yr for PSTIX. Their 0.70 correlation means they have sometimes moved together and sometimes differently. UKPIX charges 1.78%/yr vs 0.64%/yr for PSTIX.

Performance

UKPIX vs. PSTIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProFunds Ultra Short Japan Fund (UKPIX) and PIMCO StocksPLUS Short Fund (PSTIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, UKPIX achieves a -45.96% return, which is significantly lower than PSTIX's -5.26% return. Over the past 10 years, UKPIX has underperformed PSTIX with an annualized return of -15.97%, while PSTIX has yielded a comparatively higher -9.92% annualized return.

UKPIX

• 1D: -7.70%
• 1M: 12.75%
• 6M: -38.57%
• YTD: -45.96%
• 1Y: -67.69%
• 3Y*: 24.54%
• 5Y*: 0.86%
• 10Y*: -15.97%
• ALL TIME*: -17.96%

PSTIX

• 1D: -1.59%
• 1M: 0.65%
• 6M: -4.53%
• YTD: -5.26%
• 1Y: -10.18%
• 3Y*: -8.25%
• 5Y*: -5.88%
• 10Y*: -9.92%
• ALL TIME*: -7.70%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
PSTIX PIMCO StocksPLUS Short Fund	$0.00	$0.00	$0.00
UKPIX ProFunds Ultra Short Japan Fund	$0.00	$0.00	$0.00

UKPIX vs. PSTIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
UKPIX ProFunds Ultra Short Japan Fund	-45.96%	-44.54%	554.47%	-43.26%	9.92%	-20.34%	-47.86%	-35.34%	13.58%	-34.24%
PSTIX PIMCO StocksPLUS Short Fund	-5.26%	-8.24%	-11.28%	-11.01%	17.41%	-21.89%	-20.83%	-20.27%	5.21%	-14.04%

Correlation

The correlation between UKPIX and PSTIX is 0.71, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.71
Correlation (3Y) Balances recent behavior with more history.	0.66
Correlation (5Y) Shows whether the relationship held over a longer period.	0.67
Correlation (10Y) Provides a long-term view across more market conditions.	0.69
Correlation (All Time) Calculated using the full available price history since Mar 28, 2006	0.70

The correlation between UKPIX and PSTIX has been stable across timeframes, ranging from 0.66 to 0.71 - a consistent structural relationship.

Return for Risk

UKPIX vs. PSTIX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

UKPIX

UKPIX Risk / Return Rank: 0
UKPIX Sharpe Ratio Rank: 0
UKPIX Sortino Ratio Rank: 0
UKPIX Omega Ratio Rank: 0
UKPIX Calmar Ratio Rank: 0
UKPIX Martin Ratio Rank: 0

PSTIX

PSTIX Risk / Return Rank: 1
PSTIX Sharpe Ratio Rank: 1
PSTIX Sortino Ratio Rank: 1
PSTIX Omega Ratio Rank: 1
PSTIX Calmar Ratio Rank: 1
PSTIX Martin Ratio Rank: 1

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

UKPIX vs. PSTIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProFunds Ultra Short Japan Fund (UKPIX) and PIMCO StocksPLUS Short Fund (PSTIX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	UKPIX	PSTIX	Difference
Sharpe ratio: Return per unit of total volatility	-1.21	-0.65	-0.56
Sortino ratio: Return per unit of downside risk	-2.24	-0.88	-1.36
Omega ratio: Gain probability vs. loss probability	0.75	0.90	-0.15
Calmar ratio: Return relative to maximum drawdown	-0.90	-0.54	-0.36
Martin ratio: Return relative to average drawdown	-1.35	-1.01	-0.34

UKPIX vs. PSTIX - Sharpe Ratio Comparison

The current UKPIX Sharpe Ratio is -1.21, which is lower than the PSTIX Sharpe Ratio of -0.65. The chart below compares the historical Sharpe Ratios of UKPIX and PSTIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

UKPIX vs. PSTIX - Drawdown Comparison

The maximum UKPIX drawdown since its inception was -99.83%, which is greater than PSTIX's maximum drawdown of -90.52%. Use the drawdown chart below to compare losses from any high point for UKPIX and PSTIX.

Drawdown Indicators

	UKPIX	PSTIX	Difference
Max Drawdown Largest peak-to-trough decline	-99.83%	-90.52%	-9.31%
Max Drawdown (1Y) Largest decline over 1 year	-74.60%	-15.05%	-59.55%
Max Drawdown (3Y) Largest decline over 3 years	-83.62%	-33.92%	-49.70%
Max Drawdown (5Y) Largest decline over 5 years	-83.62%	-37.53%	-46.09%
Max Drawdown (10Y) Largest decline over 10 years	-94.57%	-67.42%	-27.15%
Current Drawdown Current decline from peak	-99.43%	-90.23%	-9.20%
Average Drawdown Average peak-to-trough decline	-82.82%	-57.40%	-25.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	49.36%	7.99%	+41.37%

Volatility

UKPIX vs. PSTIX - Volatility Comparison

ProFunds Ultra Short Japan Fund (UKPIX) has a higher volatility of 19.08% compared to PIMCO StocksPLUS Short Fund (PSTIX) at 3.19%. This indicates that UKPIX's price experiences larger fluctuations and is considered to be riskier than PSTIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	UKPIX	PSTIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.08%	3.19%	+15.89%
Volatility (6M) Calculated over the trailing 6-month period	45.61%	9.63%	+35.98%
Volatility (1Y) Calculated over the trailing 1-year period	55.21%	12.47%	+42.74%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	425.82%	16.56%	+409.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	302.13%	17.50%	+284.63%

UKPIX vs. PSTIX - Expense Ratio Comparison

UKPIX has a 1.78% expense ratio, which is higher than PSTIX's 0.64% expense ratio.

Dividends

UKPIX vs. PSTIX - Dividend Comparison

UKPIX's dividend yield for the trailing twelve months is around 3.05%, more than PSTIX's 0.89% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PSTIX PIMCO StocksPLUS Short Fund	0.89%	0.00%	0.00%	4.09%	1.16%	0.68%	5.06%	1.23%	1.26%	1.68%	0.00%	3.57%
UKPIX ProFunds Ultra Short Japan Fund	3.05%	1.65%	9.69%	1.62%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both UKPIX and PSTIX in my portfolio?

UKPIX and PSTIX have a correlation of 0.71, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, UKPIX or PSTIX?

UKPIX has higher volatility (19.08%) compared to PSTIX (3.19%). In terms of maximum drawdown, UKPIX dropped -99.83% vs PSTIX's -90.52%.

Which has better risk-adjusted returns?

PSTIX currently has the higher Sharpe Ratio (-0.65 vs -1.21), 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.