SOPIX vs. BTCFX

Last updated Jun 3, 2026

SOPIX (ProFunds Short NASDAQ-100 Fund) and BTCFX (Bitcoin ProFund Investor) are both mutual funds - SOPIX is a Inverse Equities fund managed by ProFunds, while BTCFX is a Cryptocurrency fund managed by ProFunds. Over the past 3 years, SOPIX returned -21.80%/yr vs 28.12%/yr for BTCFX. At a correlation of -0.42, they often move in opposite directions. SOPIX charges 1.78%/yr vs 1.41%/yr for BTCFX.

Performance

SOPIX vs. BTCFX - Performance Comparison

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

Returns By Period

In the year-to-date period, SOPIX achieves a -16.58% return, which is significantly higher than BTCFX's -19.48% return.

SOPIX

• 1D: -0.56%
• 1M: -8.98%
• YTD: -16.58%
• 6M: -15.30%
• 1Y: -27.28%
• 3Y*: -21.80%
• 5Y*: -16.77%
• 10Y*: -20.70%

BTCFX

• 1D: -2.66%
• 1M: -9.12%
• YTD: -19.48%
• 6M: -22.95%
• 1Y: -34.89%
• 3Y*: 28.12%
• 5Y*: —
• 10Y*: —

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

SOPIX vs. BTCFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
SOPIX ProFunds Short NASDAQ-100 Fund	-16.58%	-15.80%	-23.82%	-31.85%	34.73%	-10.48%
BTCFX Bitcoin ProFund Investor	-19.48%	-11.83%	102.93%	133.31%	-64.04%	-3.69%

Correlation

The correlation between SOPIX and BTCFX is -0.50, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.50
Correlation (3Y) Calculated over the trailing 3-year period	-0.35
Correlation (All Time) Calculated using the full available price history since Aug 10, 2021	-0.42

The correlation between SOPIX and BTCFX shifts across timeframes, from -0.50 (1 year) to -0.35 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

SOPIX vs. BTCFX — Risk / Return Rank

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

SOPIX

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

BTCFX

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

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. BTCFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProFunds Short NASDAQ-100 Fund (SOPIX) and Bitcoin ProFund Investor (BTCFX). 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	BTCFX	Difference
Sharpe ratio Return per unit of total volatility	-1.74	-0.81	-0.93
Sortino ratio Return per unit of downside risk	-2.61	-1.05	-1.56
Omega ratio Gain probability vs. loss probability	0.73	0.88	-0.15
Calmar ratio Return relative to maximum drawdown	-1.00	-0.71	-0.29
Martin ratio Return relative to average drawdown	-2.10	-1.23	-0.87
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. BTCFX - Sharpe Ratio Comparison

The current SOPIX Sharpe Ratio is -1.74, which is lower than the BTCFX Sharpe Ratio of -0.81. The chart below compares the historical Sharpe Ratios of SOPIX and BTCFX, 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

	SOPIX	BTCFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-1.74	-0.81	-0.93
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.72	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.92	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.81	0.06	-0.87

Drawdowns

SOPIX vs. BTCFX - Drawdown Comparison

The maximum SOPIX drawdown since its inception was -99.06%, which is greater than BTCFX's maximum drawdown of -77.89%. Use the drawdown chart below to compare losses from any high point for SOPIX and BTCFX.

Drawdown Indicators

	SOPIX	BTCFX	Difference
Max Drawdown Largest peak-to-trough decline	-99.06%	-77.89%	-21.17%
Max Drawdown (1Y) Largest decline over 1 year	-27.12%	-50.35%	+23.23%
Max Drawdown (3Y) Largest decline over 3 years	-54.67%	-50.35%	-4.32%
Max Drawdown (5Y) Largest decline over 5 years	-64.84%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-90.82%	—	—
Current Drawdown Current decline from peak	-99.06%	-44.78%	-54.28%
Average Drawdown Average peak-to-trough decline	-76.13%	-35.93%	-40.20%
Ulcer Index Depth and duration of drawdowns from previous peaks	13.18%	29.02%	-15.84%

Volatility

SOPIX vs. BTCFX - Volatility Comparison

The current volatility for ProFunds Short NASDAQ-100 Fund (SOPIX) is 4.55%, while Bitcoin ProFund Investor (BTCFX) has a volatility of 8.51%. This indicates that SOPIX experiences smaller price fluctuations and is considered to be less risky than BTCFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SOPIX	BTCFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.55%	8.51%	-3.96%
Volatility (6M) Calculated over the trailing 6-month period	12.18%	34.48%	-22.30%
Volatility (1Y) Calculated over the trailing 1-year period	16.04%	43.58%	-27.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.38%	55.37%	-31.99%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.49%	55.37%	-32.88%

SOPIX vs. BTCFX - Expense Ratio Comparison

SOPIX has a 1.78% expense ratio, which is higher than BTCFX's 1.41% expense ratio.

Dividends

SOPIX vs. BTCFX - Dividend Comparison

SOPIX's dividend yield for the trailing twelve months is around 2.57%, less than BTCFX's 34.75% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019
BTCFX Bitcoin ProFund Investor	34.75%	44.62%	24.28%	10.95%	0.00%	0.00%	0.00%	0.00%
SOPIX ProFunds Short NASDAQ-100 Fund	2.57%	2.14%	0.00%	6.71%	0.00%	0.00%	0.00%	0.29%

Frequently Asked Questions

Can I hold both SOPIX and BTCFX in my portfolio?

SOPIX and BTCFX have a correlation of -0.50, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SOPIX or BTCFX?

BTCFX has higher volatility (8.51%) compared to SOPIX (4.55%). In terms of maximum drawdown, SOPIX dropped -99.06% vs BTCFX's -77.89%.

Which has better risk-adjusted returns?

BTCFX currently has the higher Sharpe Ratio (-0.81 vs -1.74), 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.