ASQIX vs. TWCIX

Last updated Apr 1, 2026

Compare and contrast key facts about American Century Small Company Fund (ASQIX) and American Century Select Fund (TWCIX).

ASQIX is managed by American Century. It was launched on Jul 31, 1998. TWCIX is managed by American Century. It was launched on Jun 30, 1971.

Performance

ASQIX vs. TWCIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Small Company Fund (ASQIX) and American Century Select Fund (TWCIX). The values are adjusted to include any dividend payments, if applicable.

ASQIX vs. TWCIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ASQIX American Century Small Company Fund	-1.97%	12.93%	4.44%	21.29%	-21.34%	21.65%	16.42%	19.71%	-14.39%	10.58%
TWCIX American Century Select Fund	-12.29%	16.30%	26.15%	39.93%	-28.82%	25.47%	33.99%	36.30%	-3.54%	28.90%

Returns By Period

In the year-to-date period, ASQIX achieves a -1.97% return, which is significantly higher than TWCIX's -12.29% return. Over the past 10 years, ASQIX has underperformed TWCIX with an annualized return of 7.68%, while TWCIX has yielded a comparatively higher 14.46% annualized return.

ASQIX

• 1D: -1.19%
• 1M: -7.24%
• YTD: -1.97%
• 6M: 0.88%
• 1Y: 20.44%
• 3Y*: 11.14%
• 5Y*: 3.49%
• 10Y*: 7.68%

TWCIX

• 1D: -0.45%
• 1M: -8.75%
• YTD: -12.29%
• 6M: -10.54%
• 1Y: 13.57%
• 3Y*: 15.91%
• 5Y*: 9.81%
• 10Y*: 14.46%

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

ASQIX vs. TWCIX - Expense Ratio Comparison

ASQIX has a 0.85% expense ratio, which is lower than TWCIX's 0.94% expense ratio.

TWCIX

American Century Select Fund

ASQIX

American Century Small Company Fund

Return for Risk

ASQIX vs. TWCIX — Risk / Return Rank

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

ASQIX

ASQIX Risk / Return Rank: 50
ASQIX Sharpe Ratio Rank: 47
ASQIX Sortino Ratio Rank: 52
ASQIX Omega Ratio Rank: 40
ASQIX Calmar Ratio Rank: 60
ASQIX Martin Ratio Rank: 53

TWCIX

TWCIX Risk / Return Rank: 27
TWCIX Sharpe Ratio Rank: 26
TWCIX Sortino Ratio Rank: 29
TWCIX Omega Ratio Rank: 28
TWCIX Calmar Ratio Rank: 26
TWCIX Martin Ratio Rank: 25

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.

ASQIX vs. TWCIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Small Company Fund (ASQIX) and American Century Select Fund (TWCIX). 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.

	ASQIX	TWCIX	Difference
Sharpe ratio Return per unit of total volatility	0.92	0.61	+0.32
Sortino ratio Return per unit of downside risk	1.43	1.03	+0.40
Omega ratio Gain probability vs. loss probability	1.18	1.14	+0.04
Calmar ratio Return relative to maximum drawdown	1.39	0.74	+0.65
Martin ratio Return relative to average drawdown	5.16	2.69	+2.48
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ASQIX vs. TWCIX - Sharpe Ratio Comparison

The current ASQIX Sharpe Ratio is 0.92, which is higher than the TWCIX Sharpe Ratio of 0.61. The chart below compares the historical Sharpe Ratios of ASQIX and TWCIX, 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

	ASQIX	TWCIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.92	0.61	+0.32
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.16	0.46	-0.30
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.34	0.69	-0.35
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.57	-0.22

Correlation

The correlation between ASQIX and TWCIX is 0.79, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

ASQIX vs. TWCIX - Dividend Comparison

ASQIX's dividend yield for the trailing twelve months is around 2.53%, less than TWCIX's 11.44% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ASQIX American Century Small Company Fund	2.53%	2.57%	0.30%	0.49%	0.55%	18.62%	0.51%	0.34%	13.12%	5.19%	0.37%	0.31%
TWCIX American Century Select Fund	11.44%	10.04%	3.67%	5.21%	10.36%	8.25%	6.26%	5.42%	9.05%	6.30%	3.43%	6.16%

Drawdowns

ASQIX vs. TWCIX - Drawdown Comparison

The maximum ASQIX drawdown since its inception was -63.58%, which is greater than TWCIX's maximum drawdown of -57.31%. Use the drawdown chart below to compare losses from any high point for ASQIX and TWCIX.

Drawdown Indicators

	ASQIX	TWCIX	Difference
Max Drawdown Largest peak-to-trough decline	-63.58%	-57.31%	-6.27%
Max Drawdown (1Y) Largest decline over 1 year	-12.69%	-14.66%	+1.97%
Max Drawdown (5Y) Largest decline over 5 years	-31.29%	-31.24%	-0.05%
Max Drawdown (10Y) Largest decline over 10 years	-45.59%	-31.24%	-14.35%
Current Drawdown Current decline from peak	-8.94%	-14.66%	+5.72%
Average Drawdown Average peak-to-trough decline	-11.75%	-12.42%	+0.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.40%	4.01%	-0.61%

Volatility

ASQIX vs. TWCIX - Volatility Comparison

American Century Small Company Fund (ASQIX) has a higher volatility of 6.46% compared to American Century Select Fund (TWCIX) at 5.75%. This indicates that ASQIX's price experiences larger fluctuations and is considered to be riskier than TWCIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ASQIX	TWCIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.46%	5.75%	+0.71%
Volatility (6M) Calculated over the trailing 6-month period	13.32%	12.15%	+1.17%
Volatility (1Y) Calculated over the trailing 1-year period	21.80%	22.70%	-0.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.38%	21.43%	-0.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.46%	20.94%	+1.52%