ADSIX vs. VTSAX

Last updated Jun 23, 2026

ADSIX (American Century Disciplined Growth Fund) and VTSAX (Vanguard Total Stock Market Index Fund Admiral Shares) are both mutual funds - ADSIX is a Large Cap Growth Equities fund managed by American Century, while VTSAX is a Large Cap Blend Equities fund managed by Vanguard. Over the past 10 years, ADSIX returned 15.82%/yr vs 15.06%/yr for VTSAX. Their correlation of 0.94 suggests significant overlap in exposure. ADSIX charges 0.99%/yr vs 0.04%/yr for VTSAX.

Performance

ADSIX vs. VTSAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Disciplined Growth Fund (ADSIX) and Vanguard Total Stock Market Index Fund Admiral Shares (VTSAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ADSIX achieves a 3.35% return, which is significantly lower than VTSAX's 10.72% return. Both investments have delivered pretty close results over the past 10 years, with ADSIX having a 15.82% annualized return and VTSAX not far behind at 15.06%.

ADSIX

• 1D: 1.19%
• 1M: -1.16%
• YTD: 3.35%
• 6M: 2.59%
• 1Y: 21.06%
• 3Y*: 21.58%
• 5Y*: 12.69%
• 10Y*: 15.82%

VTSAX

• 1D: 1.14%
• 1M: 0.90%
• YTD: 10.72%
• 6M: 9.93%
• 1Y: 27.56%
• 3Y*: 20.66%
• 5Y*: 12.87%
• 10Y*: 15.06%

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

ADSIX vs. VTSAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ADSIX American Century Disciplined Growth Fund	3.35%	17.24%	31.19%	43.07%	-31.44%	24.46%	33.28%	30.00%	-5.57%	26.05%
VTSAX Vanguard Total Stock Market Index Fund Admiral Shares	10.72%	17.12%	23.23%	26.51%	-19.52%	25.72%	20.98%	30.79%	-5.18%	21.16%

Correlation

The correlation between ADSIX and VTSAX 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	0.91
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 Oct 3, 2005	0.94

The correlation between ADSIX and VTSAX has been stable across timeframes, ranging from 0.91 to 0.94 - a consistent structural relationship.

Return for Risk

ADSIX vs. VTSAX — Risk / Return Rank

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

ADSIX

ADSIX Risk / Return Rank: 18
ADSIX Sharpe Ratio Rank: 22
ADSIX Sortino Ratio Rank: 20
ADSIX Omega Ratio Rank: 21
ADSIX Calmar Ratio Rank: 14
ADSIX Martin Ratio Rank: 15

VTSAX

VTSAX Risk / Return Rank: 65
VTSAX Sharpe Ratio Rank: 63
VTSAX Sortino Ratio Rank: 57
VTSAX Omega Ratio Rank: 58
VTSAX Calmar Ratio Rank: 70
VTSAX Martin Ratio Rank: 80

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.

ADSIX vs. VTSAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Disciplined Growth Fund (ADSIX) and Vanguard Total Stock Market Index Fund Admiral Shares (VTSAX). 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.

	ADSIX	VTSAX	Difference
Sharpe ratio: Return per unit of total volatility	1.26	2.14	-0.88
Sortino ratio: Return per unit of downside risk	1.74	2.90	-1.17
Omega ratio: Gain probability vs. loss probability	1.22	1.38	-0.16
Calmar ratio: Return relative to maximum drawdown	1.21	3.07	-1.86
Martin ratio: Return relative to average drawdown	3.78	13.77	-9.99

ADSIX vs. VTSAX - Sharpe Ratio Comparison

The current ADSIX Sharpe Ratio is 1.26, which is lower than the VTSAX Sharpe Ratio of 2.14. The chart below compares the historical Sharpe Ratios of ADSIX and VTSAX, 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

ADSIX vs. VTSAX - Drawdown Comparison

The maximum ADSIX drawdown since its inception was -53.04%, roughly equal to the maximum VTSAX drawdown of -55.33%. Use the drawdown chart below to compare losses from any high point for ADSIX and VTSAX.

Drawdown Indicators

	ADSIX	VTSAX	Difference
Max Drawdown Largest peak-to-trough decline	-53.04%	-55.33%	+2.29%
Max Drawdown (1Y) Largest decline over 1 year	-16.79%	-8.92%	-7.87%
Max Drawdown (3Y) Largest decline over 3 years	-24.11%	-19.36%	-4.75%
Max Drawdown (5Y) Largest decline over 5 years	-34.49%	-25.36%	-9.13%
Max Drawdown (10Y) Largest decline over 10 years	-34.49%	-34.97%	+0.48%
Current Drawdown Current decline from peak	-4.57%	-1.13%	-3.44%
Average Drawdown Average peak-to-trough decline	-8.22%	-8.99%	+0.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.38%	1.99%	+3.39%

Volatility

ADSIX vs. VTSAX - Volatility Comparison

American Century Disciplined Growth Fund (ADSIX) has a higher volatility of 6.06% compared to Vanguard Total Stock Market Index Fund Admiral Shares (VTSAX) at 4.88%. This indicates that ADSIX's price experiences larger fluctuations and is considered to be riskier than VTSAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ADSIX	VTSAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.06%	4.88%	+1.18%
Volatility (6M) Calculated over the trailing 6-month period	12.68%	10.11%	+2.57%
Volatility (1Y) Calculated over the trailing 1-year period	16.23%	12.80%	+3.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.50%	17.45%	+4.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.16%	18.45%	+2.71%

ADSIX vs. VTSAX - Expense Ratio Comparison

ADSIX has a 0.99% expense ratio, which is higher than VTSAX's 0.04% expense ratio.

Dividends

ADSIX vs. VTSAX - Dividend Comparison

ADSIX's dividend yield for the trailing twelve months is around 13.16%, more than VTSAX's 1.01% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ADSIX American Century Disciplined Growth Fund	13.16%	13.61%	43.82%	0.04%	0.00%	21.63%	19.18%	9.12%	18.62%	9.40%	0.62%	1.76%
VTSAX Vanguard Total Stock Market Index Fund Admiral Shares	1.01%	1.11%	1.26%	1.42%	1.65%	1.20%	1.41%	1.76%	2.03%	1.71%	1.92%	1.98%

Frequently Asked Questions

Can I hold both ADSIX and VTSAX in my portfolio?

With a correlation of 0.91, ADSIX and VTSAX 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, ADSIX or VTSAX?

ADSIX has higher volatility (6.06%) compared to VTSAX (4.88%). In terms of maximum drawdown, ADSIX dropped -53.04% vs VTSAX's -55.33%.

Which has better risk-adjusted returns?

VTSAX currently has the higher Sharpe Ratio (2.14 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.