RYWCX vs. ANOIX

Last updated Jun 3, 2026

RYWCX (Rydex S&P SmallCap 600 Pure Growth Fund) and ANOIX (American Century Small Cap Growth Fund) are both Small Cap Growth Equities funds. Over the past 10 years, RYWCX returned 7.08%/yr vs 13.58%/yr for ANOIX. Their correlation of 0.93 suggests significant overlap in exposure. RYWCX charges 2.26%/yr vs 1.17%/yr for ANOIX.

Performance

RYWCX vs. ANOIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rydex S&P SmallCap 600 Pure Growth Fund (RYWCX) and American Century Small Cap Growth Fund (ANOIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RYWCX achieves a 16.78% return, which is significantly higher than ANOIX's 11.05% return. Over the past 10 years, RYWCX has underperformed ANOIX with an annualized return of 7.08%, while ANOIX has yielded a comparatively higher 13.58% annualized return.

RYWCX

• 1D: -0.45%
• 1M: -0.88%
• YTD: 16.78%
• 6M: 16.98%
• 1Y: 28.98%
• 3Y*: 14.44%
• 5Y*: 2.15%
• 10Y*: 7.08%

ANOIX

• 1D: -0.54%
• 1M: 4.10%
• YTD: 11.05%
• 6M: 11.28%
• 1Y: 23.70%
• 3Y*: 14.67%
• 5Y*: 4.65%
• 10Y*: 13.58%

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

RYWCX vs. ANOIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYWCX Rydex S&P SmallCap 600 Pure Growth Fund	16.78%	7.76%	7.20%	17.03%	-30.33%	16.37%	15.23%	11.58%	-9.55%	15.23%
ANOIX American Century Small Cap Growth Fund	11.05%	9.00%	14.90%	17.13%	-26.41%	7.80%	51.07%	36.75%	-4.84%	25.83%

Correlation

The correlation between RYWCX and ANOIX is 0.91, 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	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.92
Correlation (All Time) Calculated using the full available price history since Jan 4, 2005	0.93

The correlation between RYWCX and ANOIX has been stable across timeframes, ranging from 0.91 to 0.93 - a consistent structural relationship.

Return for Risk

RYWCX vs. ANOIX — Risk / Return Rank

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

RYWCX

RYWCX Risk / Return Rank: 45
RYWCX Sharpe Ratio Rank: 31
RYWCX Sortino Ratio Rank: 33
RYWCX Omega Ratio Rank: 28
RYWCX Calmar Ratio Rank: 75
RYWCX Martin Ratio Rank: 55

ANOIX

ANOIX Risk / Return Rank: 23
ANOIX Sharpe Ratio Rank: 18
ANOIX Sortino Ratio Rank: 19
ANOIX Omega Ratio Rank: 17
ANOIX Calmar Ratio Rank: 27
ANOIX Martin Ratio Rank: 32

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.

RYWCX vs. ANOIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex S&P SmallCap 600 Pure Growth Fund (RYWCX) and American Century Small Cap Growth Fund (ANOIX). 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.

	RYWCX	ANOIX	Difference
Sharpe ratio Return per unit of total volatility	1.60	1.26	+0.34
Sortino ratio Return per unit of downside risk	2.40	1.88	+0.51
Omega ratio Gain probability vs. loss probability	1.28	1.22	+0.06
Calmar ratio Return relative to maximum drawdown	3.43	1.99	+1.44
Martin ratio Return relative to average drawdown	11.24	7.50	+3.74
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RYWCX vs. ANOIX - Sharpe Ratio Comparison

The current RYWCX Sharpe Ratio is 1.60, which is comparable to the ANOIX Sharpe Ratio of 1.26. The chart below compares the historical Sharpe Ratios of RYWCX and ANOIX, 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

	RYWCX	ANOIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.60	1.26	+0.34
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.09	0.20	-0.11
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.29	0.59	-0.30
Sharpe Ratio (All Time) Calculated using the full available price history	0.26	0.42	-0.16

Drawdowns

RYWCX vs. ANOIX - Drawdown Comparison

The maximum RYWCX drawdown since its inception was -60.64%, roughly equal to the maximum ANOIX drawdown of -59.47%. Use the drawdown chart below to compare losses from any high point for RYWCX and ANOIX.

Drawdown Indicators

	RYWCX	ANOIX	Difference
Max Drawdown Largest peak-to-trough decline	-60.64%	-59.47%	-1.17%
Max Drawdown (1Y) Largest decline over 1 year	-8.49%	-12.49%	+4.00%
Max Drawdown (3Y) Largest decline over 3 years	-26.39%	-25.57%	-0.82%
Max Drawdown (5Y) Largest decline over 5 years	-40.28%	-37.15%	-3.13%
Max Drawdown (10Y) Largest decline over 10 years	-54.65%	-39.07%	-15.58%
Current Drawdown Current decline from peak	-2.00%	-1.15%	-0.85%
Average Drawdown Average peak-to-trough decline	-13.45%	-11.99%	-1.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.59%	3.31%	-0.72%

Volatility

RYWCX vs. ANOIX - Volatility Comparison

The current volatility for Rydex S&P SmallCap 600 Pure Growth Fund (RYWCX) is 4.68%, while American Century Small Cap Growth Fund (ANOIX) has a volatility of 6.31%. This indicates that RYWCX experiences smaller price fluctuations and is considered to be less risky than ANOIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RYWCX	ANOIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.68%	6.31%	-1.63%
Volatility (6M) Calculated over the trailing 6-month period	13.34%	15.02%	-1.68%
Volatility (1Y) Calculated over the trailing 1-year period	18.33%	19.86%	-1.53%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.87%	22.93%	-0.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.72%	23.31%	+1.41%

RYWCX vs. ANOIX - Expense Ratio Comparison

RYWCX has a 2.26% expense ratio, which is higher than ANOIX's 1.17% expense ratio.

Dividends

RYWCX vs. ANOIX - Dividend Comparison

RYWCX has not paid dividends to shareholders, while ANOIX's dividend yield for the trailing twelve months is around 6.84%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
ANOIX American Century Small Cap Growth Fund	6.84%	7.60%	0.11%	0.00%	0.00%	21.29%	11.07%	5.50%	16.59%	3.93%
RYWCX Rydex S&P SmallCap 600 Pure Growth Fund	0.00%	0.00%	14.52%	0.00%	0.00%	59.93%	0.00%	0.00%	9.26%	3.92%

Frequently Asked Questions

Can I hold both RYWCX and ANOIX in my portfolio?

With a correlation of 0.91, RYWCX and ANOIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, RYWCX or ANOIX?

ANOIX has higher volatility (6.31%) compared to RYWCX (4.68%). In terms of maximum drawdown, RYWCX dropped -60.64% vs ANOIX's -59.47%.

Which has better risk-adjusted returns?

RYWCX currently has the higher Sharpe Ratio (1.60 vs 1.26), 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.