RYMDX vs. IDPIX

Last updated Jun 23, 2026

RYMDX (Rydex Mid-Cap 1.5x Strategy Fund) and IDPIX (ProFunds Industrial Ultra Sector Fund) are both Leveraged Equities funds. Over the past 10 years, RYMDX returned 12.11%/yr vs 15.17%/yr for IDPIX. Their correlation of 0.90 suggests significant overlap in exposure. RYMDX charges 1.65%/yr vs 1.75%/yr for IDPIX.

Performance

RYMDX vs. IDPIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rydex Mid-Cap 1.5x Strategy Fund (RYMDX) and ProFunds Industrial Ultra Sector Fund (IDPIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RYMDX achieves a 21.26% return, which is significantly lower than IDPIX's 22.91% return. Over the past 10 years, RYMDX has underperformed IDPIX with an annualized return of 12.11%, while IDPIX has yielded a comparatively higher 15.17% annualized return.

RYMDX

• 1D: 1.63%
• 1M: 4.75%
• YTD: 21.26%
• 6M: 17.28%
• 1Y: 36.49%
• 3Y*: 17.57%
• 5Y*: 8.66%
• 10Y*: 12.11%

IDPIX

• 1D: 1.06%
• 1M: 7.51%
• YTD: 22.91%
• 6M: 20.44%
• 1Y: 37.96%
• 3Y*: 24.95%
• 5Y*: 11.79%
• 10Y*: 15.17%

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

RYMDX vs. IDPIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYMDX Rydex Mid-Cap 1.5x Strategy Fund	21.26%	5.29%	15.46%	19.11%	-23.31%	34.58%	9.87%	36.13%	-19.37%	22.67%
IDPIX ProFunds Industrial Ultra Sector Fund	22.91%	22.76%	16.21%	21.47%	-24.36%	25.42%	18.08%	46.48%	-20.05%	29.39%

Correlation

The correlation between RYMDX and IDPIX is 0.83, 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	0.83
Correlation (3Y) Calculated over the trailing 3-year period	0.87
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.89
Correlation (All Time) Calculated using the full available price history since Jan 30, 2004	0.90

The correlation between RYMDX and IDPIX has been stable across timeframes, ranging from 0.83 to 0.90 - a consistent structural relationship.

Return for Risk

RYMDX vs. IDPIX — Risk / Return Rank

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

RYMDX

RYMDX Risk / Return Rank: 40
RYMDX Sharpe Ratio Rank: 33
RYMDX Sortino Ratio Rank: 33
RYMDX Omega Ratio Rank: 30
RYMDX Calmar Ratio Rank: 55
RYMDX Martin Ratio Rank: 49

IDPIX

IDPIX Risk / Return Rank: 34
IDPIX Sharpe Ratio Rank: 35
IDPIX Sortino Ratio Rank: 33
IDPIX Omega Ratio Rank: 30
IDPIX Calmar Ratio Rank: 35
IDPIX Martin Ratio Rank: 37

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.

RYMDX vs. IDPIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex Mid-Cap 1.5x Strategy Fund (RYMDX) and ProFunds Industrial Ultra Sector Fund (IDPIX). 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.

	RYMDX	IDPIX	Difference
Sharpe ratio: Return per unit of total volatility	1.55	1.58	-0.03
Sortino ratio: Return per unit of downside risk	2.23	2.22	0.00
Omega ratio: Gain probability vs. loss probability	1.27	1.27	0.00
Calmar ratio: Return relative to maximum drawdown	2.72	2.11	+0.61
Martin ratio: Return relative to average drawdown	9.60	7.70	+1.90

RYMDX vs. IDPIX - Sharpe Ratio Comparison

The current RYMDX Sharpe Ratio is 1.55, which is comparable to the IDPIX Sharpe Ratio of 1.58. The chart below compares the historical Sharpe Ratios of RYMDX and IDPIX, 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

RYMDX vs. IDPIX - Drawdown Comparison

The maximum RYMDX drawdown since its inception was -75.43%, smaller than the maximum IDPIX drawdown of -79.54%. Use the drawdown chart below to compare losses from any high point for RYMDX and IDPIX.

Drawdown Indicators

	RYMDX	IDPIX	Difference
Max Drawdown Largest peak-to-trough decline	-75.43%	-79.54%	+4.11%
Max Drawdown (1Y) Largest decline over 1 year	-13.50%	-18.15%	+4.65%
Max Drawdown (3Y) Largest decline over 3 years	-35.20%	-30.24%	-4.96%
Max Drawdown (5Y) Largest decline over 5 years	-42.77%	-37.93%	-4.84%
Max Drawdown (10Y) Largest decline over 10 years	-58.09%	-55.09%	-3.00%
Current Drawdown Current decline from peak	-0.70%	0.00%	-0.70%
Average Drawdown Average peak-to-trough decline	-15.41%	-14.95%	-0.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.82%	4.98%	-1.16%

Volatility

RYMDX vs. IDPIX - Volatility Comparison

The current volatility for Rydex Mid-Cap 1.5x Strategy Fund (RYMDX) is 7.27%, while ProFunds Industrial Ultra Sector Fund (IDPIX) has a volatility of 8.82%. This indicates that RYMDX experiences smaller price fluctuations and is considered to be less risky than IDPIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RYMDX	IDPIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.27%	8.82%	-1.55%
Volatility (6M) Calculated over the trailing 6-month period	17.60%	20.42%	-2.82%
Volatility (1Y) Calculated over the trailing 1-year period	23.71%	24.28%	-0.57%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	31.54%	27.14%	+4.40%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	32.64%	29.84%	+2.80%

RYMDX vs. IDPIX - Expense Ratio Comparison

RYMDX has a 1.65% expense ratio, which is lower than IDPIX's 1.75% expense ratio.

Dividends

RYMDX vs. IDPIX - Dividend Comparison

RYMDX's dividend yield for the trailing twelve months is around 0.60%, less than IDPIX's 1.43% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IDPIX ProFunds Industrial Ultra Sector Fund	1.43%	1.76%	0.00%	0.00%	0.00%	4.04%	0.00%	0.00%	0.00%	0.00%	0.00%	0.62%
RYMDX Rydex Mid-Cap 1.5x Strategy Fund	0.60%	0.73%	0.72%	0.35%	0.00%	17.47%	0.38%	0.18%	0.56%	0.53%	0.19%	0.67%

Frequently Asked Questions

Can I hold both RYMDX and IDPIX in my portfolio?

RYMDX and IDPIX have a correlation of 0.83, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RYMDX or IDPIX?

IDPIX has higher volatility (8.82%) compared to RYMDX (7.27%). In terms of maximum drawdown, RYMDX dropped -75.43% vs IDPIX's -79.54%.

Which has better risk-adjusted returns?

IDPIX currently has the higher Sharpe Ratio (1.58 vs 1.55), 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.