SOPIX vs. UJPIX

Last updated Apr 1, 2026

Compare and contrast key facts about ProFunds Short NASDAQ-100 Fund (SOPIX) and ProFunds UltraJapan Fund (UJPIX).

SOPIX is managed by ProFunds. It was launched on Apr 30, 2002. UJPIX is managed by ProFunds. It was launched on Feb 6, 2000.

Performance

SOPIX vs. UJPIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProFunds Short NASDAQ-100 Fund (SOPIX) and ProFunds UltraJapan Fund (UJPIX). The values are adjusted to include any dividend payments, if applicable.

SOPIX vs. UJPIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SOPIX ProFunds Short NASDAQ-100 Fund	10.52%	-15.80%	-23.82%	-31.85%	34.73%	-25.69%	-42.92%	-28.29%	-3.07%	-25.24%
UJPIX ProFunds UltraJapan Fund	0.94%	60.72%	28.67%	70.81%	-21.63%	6.44%	23.36%	40.42%	-25.61%	39.72%

Returns By Period

In the year-to-date period, SOPIX achieves a 10.52% return, which is significantly higher than UJPIX's 0.94% return. Over the past 10 years, SOPIX has underperformed UJPIX with an annualized return of -18.48%, while UJPIX has yielded a comparatively higher 21.56% annualized return.

SOPIX

• 1D: 0.80%
• 1M: 8.80%
• YTD: 10.52%
• 6M: 8.77%
• 1Y: -14.65%
• 3Y*: -16.68%
• 5Y*: -12.90%
• 10Y*: -18.48%

UJPIX

• 1D: -1.04%
• 1M: -24.63%
• YTD: 0.94%
• 6M: 27.16%
• 1Y: 92.73%
• 3Y*: 42.96%
• 5Y*: 21.27%
• 10Y*: 21.56%

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

SOPIX vs. UJPIX - Expense Ratio Comparison

Both SOPIX and UJPIX have an expense ratio of 1.78%.

SOPIX

ProFunds Short NASDAQ-100 Fund

UJPIX

ProFunds UltraJapan Fund

Return for Risk

SOPIX vs. UJPIX — Risk / Return Rank

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

SOPIX

SOPIX Risk / Return Rank: 2
SOPIX Sharpe Ratio Rank: 1
SOPIX Sortino Ratio Rank: 1
SOPIX Omega Ratio Rank: 1
SOPIX Calmar Ratio Rank: 3
SOPIX Martin Ratio Rank: 4

UJPIX

UJPIX Risk / Return Rank: 87
UJPIX Sharpe Ratio Rank: 87
UJPIX Sortino Ratio Rank: 87
UJPIX Omega Ratio Rank: 80
UJPIX Calmar Ratio Rank: 93
UJPIX Martin Ratio Rank: 88

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.

SOPIX vs. UJPIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProFunds Short NASDAQ-100 Fund (SOPIX) and ProFunds UltraJapan Fund (UJPIX). 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.

	SOPIX	UJPIX	Difference
Sharpe ratio Return per unit of total volatility	-0.59	1.73	-2.32
Sortino ratio Return per unit of downside risk	-0.69	2.34	-3.03
Omega ratio Gain probability vs. loss probability	0.90	1.31	-0.41
Calmar ratio Return relative to maximum drawdown	-0.36	2.91	-3.28
Martin ratio Return relative to average drawdown	-0.45	9.56	-10.02
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SOPIX vs. UJPIX - Sharpe Ratio Comparison

The current SOPIX Sharpe Ratio is -0.59, which is lower than the UJPIX Sharpe Ratio of 1.73. The chart below compares the historical Sharpe Ratios of SOPIX and UJPIX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	SOPIX	UJPIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.59	1.73	-2.32
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.55	0.52	-1.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.83	0.52	-1.35
Sharpe Ratio (All Time) Calculated using the full available price history	-0.77	0.07	-0.84

Correlation

The correlation between SOPIX and UJPIX is -0.64. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.

Dividends

SOPIX vs. UJPIX - Dividend Comparison

SOPIX's dividend yield for the trailing twelve months is around 1.94%, less than UJPIX's 39.34% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018
SOPIX ProFunds Short NASDAQ-100 Fund	1.94%	2.14%	0.00%	6.71%	0.00%	0.00%	0.00%	0.29%	0.00%
UJPIX ProFunds UltraJapan Fund	39.34%	39.71%	0.00%	0.00%	0.00%	14.19%	0.00%	0.00%	2.64%

Drawdowns

SOPIX vs. UJPIX - Drawdown Comparison

The maximum SOPIX drawdown since its inception was -98.92%, which is greater than UJPIX's maximum drawdown of -89.83%. Use the drawdown chart below to compare losses from any high point for SOPIX and UJPIX.

Drawdown Indicators

	SOPIX	UJPIX	Difference
Max Drawdown Largest peak-to-trough decline	-98.92%	-89.83%	-9.09%
Max Drawdown (1Y) Largest decline over 1 year	-33.92%	-27.11%	-6.81%
Max Drawdown (5Y) Largest decline over 5 years	-59.43%	-43.92%	-15.51%
Max Drawdown (10Y) Largest decline over 10 years	-89.41%	-56.99%	-32.42%
Current Drawdown Current decline from peak	-98.76%	-27.11%	-71.65%
Average Drawdown Average peak-to-trough decline	-75.96%	-50.24%	-25.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	27.20%	8.26%	+18.94%

Volatility

SOPIX vs. UJPIX - Volatility Comparison

The current volatility for ProFunds Short NASDAQ-100 Fund (SOPIX) is 5.28%, while ProFunds UltraJapan Fund (UJPIX) has a volatility of 18.79%. This indicates that SOPIX experiences smaller price fluctuations and is considered to be less risky than UJPIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SOPIX	UJPIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.28%	18.79%	-13.51%
Volatility (6M) Calculated over the trailing 6-month period	12.29%	37.30%	-25.01%
Volatility (1Y) Calculated over the trailing 1-year period	24.87%	51.82%	-26.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.36%	41.11%	-17.75%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.42%	41.55%	-19.13%