AGCVX vs. TWCIX

Last updated Jun 24, 2026

AGCVX (American Century Global Small Cap Fund) and TWCIX (American Century Select Fund) are both mutual funds - AGCVX is a Global Equities fund managed by American Century, while TWCIX is a Large Cap Growth Equities fund managed by American Century. Over the past 5 years, AGCVX returned 3.33%/yr vs 11.16%/yr for TWCIX. A 0.78 correlation means they provide meaningful diversification when combined. AGCVX charges 1.11%/yr vs 0.94%/yr for TWCIX.

Performance

AGCVX vs. TWCIX - Performance Comparison

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

Returns By Period

In the year-to-date period, AGCVX achieves a 14.85% return, which is significantly higher than TWCIX's 3.42% return.

AGCVX

• 1D: 0.86%
• 1M: 4.03%
• YTD: 14.85%
• 6M: 12.49%
• 1Y: 20.80%
• 3Y*: 14.92%
• 5Y*: 3.33%
• 10Y*: —

TWCIX

• 1D: -1.52%
• 1M: -3.43%
• YTD: 3.42%
• 6M: 2.06%
• 1Y: 21.28%
• 3Y*: 18.71%
• 5Y*: 11.16%
• 10Y*: 16.76%

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

AGCVX vs. TWCIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AGCVX American Century Global Small Cap Fund	14.85%	10.96%	12.52%	10.17%	-29.46%	18.44%	46.34%	35.08%	-12.80%	37.97%
TWCIX American Century Select Fund	3.42%	16.30%	26.15%	39.93%	-28.82%	25.47%	33.99%	36.30%	-3.54%	28.90%

Correlation

The correlation between AGCVX and TWCIX is 0.70, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.70
Correlation (3Y) Calculated over the trailing 3-year period	0.72
Correlation (5Y) Calculated over the trailing 5-year period	0.77
Correlation (All Time) Calculated using the full available price history since Jan 3, 2017	0.78

The correlation between AGCVX and TWCIX has been stable across timeframes, ranging from 0.70 to 0.78 - a consistent structural relationship.

Return for Risk

AGCVX vs. TWCIX — Risk / Return Rank

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

AGCVX

AGCVX Risk / Return Rank: 21
AGCVX Sharpe Ratio Rank: 19
AGCVX Sortino Ratio Rank: 19
AGCVX Omega Ratio Rank: 19
AGCVX Calmar Ratio Rank: 22
AGCVX Martin Ratio Rank: 26

TWCIX

TWCIX Risk / Return Rank: 24
TWCIX Sharpe Ratio Rank: 26
TWCIX Sortino Ratio Rank: 23
TWCIX Omega Ratio Rank: 25
TWCIX Calmar Ratio Rank: 21
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.

AGCVX vs. TWCIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Global Small Cap Fund (AGCVX) 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.

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.

	AGCVX	TWCIX	Difference
Sharpe ratio: Return per unit of total volatility	1.15	1.36	-0.21
Sortino ratio: Return per unit of downside risk	1.67	1.87	-0.20
Omega ratio: Gain probability vs. loss probability	1.21	1.24	-0.03
Calmar ratio: Return relative to maximum drawdown	1.61	1.55	+0.06
Martin ratio: Return relative to average drawdown	5.75	5.62	+0.13

AGCVX vs. TWCIX - Sharpe Ratio Comparison

The current AGCVX Sharpe Ratio is 1.15, which is comparable to the TWCIX Sharpe Ratio of 1.36. The chart below compares the historical Sharpe Ratios of AGCVX and TWCIX, 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

AGCVX vs. TWCIX - Drawdown Comparison

The maximum AGCVX drawdown since its inception was -40.08%, smaller than the maximum TWCIX drawdown of -57.31%. Use the drawdown chart below to compare losses from any high point for AGCVX and TWCIX.

Drawdown Indicators

	AGCVX	TWCIX	Difference
Max Drawdown Largest peak-to-trough decline	-40.08%	-57.31%	+17.23%
Max Drawdown (1Y) Largest decline over 1 year	-13.82%	-14.66%	+0.84%
Max Drawdown (3Y) Largest decline over 3 years	-23.23%	-23.88%	+0.65%
Max Drawdown (5Y) Largest decline over 5 years	-38.95%	-31.24%	-7.71%
Max Drawdown (10Y) Largest decline over 10 years	—	-31.24%	—
Current Drawdown Current decline from peak	0.00%	-5.33%	+5.33%
Average Drawdown Average peak-to-trough decline	-12.72%	-12.38%	-0.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.86%	4.03%	-0.17%

Volatility

AGCVX vs. TWCIX - Volatility Comparison

American Century Global Small Cap Fund (AGCVX) has a higher volatility of 7.53% compared to American Century Select Fund (TWCIX) at 6.22%. This indicates that AGCVX'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

	AGCVX	TWCIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.53%	6.22%	+1.31%
Volatility (6M) Calculated over the trailing 6-month period	16.17%	13.17%	+3.00%
Volatility (1Y) Calculated over the trailing 1-year period	19.45%	16.74%	+2.71%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.67%	21.62%	-0.95%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.05%	21.11%	-0.06%

AGCVX vs. TWCIX - Expense Ratio Comparison

AGCVX has a 1.11% expense ratio, which is higher than TWCIX's 0.94% expense ratio.

Dividends

AGCVX vs. TWCIX - Dividend Comparison

AGCVX's dividend yield for the trailing twelve months is around 0.62%, less than TWCIX's 9.70% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AGCVX American Century Global Small Cap Fund	0.62%	0.71%	2.19%	0.22%	0.00%	17.80%	4.84%	4.97%	2.27%	5.04%	0.00%	0.00%
TWCIX American Century Select Fund	9.70%	10.04%	3.67%	5.21%	10.36%	8.25%	6.26%	5.42%	9.05%	6.30%	3.43%	6.16%

Frequently Asked Questions

Can I hold both AGCVX and TWCIX in my portfolio?

AGCVX and TWCIX have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AGCVX or TWCIX?

AGCVX has higher volatility (7.53%) compared to TWCIX (6.22%). In terms of maximum drawdown, AGCVX dropped -40.08% vs TWCIX's -57.31%.

Which has better risk-adjusted returns?

TWCIX currently has the higher Sharpe Ratio (1.36 vs 1.15), 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.