CACI vs. VFIAX

Last updated Jul 14, 2026

CACI (CACI International Inc) is a stock, while VFIAX (Vanguard 500 Index Fund Admiral Shares) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, CACI returned 17.77%/yr vs 15.28%/yr for VFIAX. At a 0.49 correlation, their price movements are largely independent.

Performance

CACI vs. VFIAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in CACI International Inc (CACI) and Vanguard 500 Index Fund Admiral Shares (VFIAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CACI achieves a -10.29% return, which is significantly lower than VFIAX's 11.33% return. Over the past 10 years, CACI has outperformed VFIAX with an annualized return of 17.77%, while VFIAX has yielded a comparatively lower 15.28% annualized return.

CACI

• 1D: -1.74%
• 1M: -7.98%
• 6M: -20.97%
• YTD: -10.29%
• 1Y: -0.67%
• 3Y*: 11.24%
• 5Y*: 12.86%
• 10Y*: 17.77%

VFIAX

• 1D: 0.43%
• 1M: 2.02%
• 6M: 9.18%
• YTD: 11.33%
• 1Y: 22.42%
• 3Y*: 21.07%
• 5Y*: 13.20%
• 10Y*: 15.28%

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

CACI vs. VFIAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CACI CACI International Inc	-10.29%	31.86%	24.76%	7.74%	11.66%	7.97%	-0.26%	73.57%	8.83%	6.48%
VFIAX Vanguard 500 Index Fund Admiral Shares	11.33%	17.83%	24.97%	26.24%	-18.16%	28.65%	18.32%	31.46%	-4.45%	21.78%

Correlation

The correlation between CACI and VFIAX is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.13
Correlation (3Y) Calculated over the trailing 3-year period	0.27
Correlation (5Y) Calculated over the trailing 5-year period	0.34
Correlation (10Y) Calculated over the trailing 10-year period	0.43
Correlation (All Time) Calculated using the full available price history since Nov 13, 2000	0.49

Over the past year, the correlation between CACI and VFIAX has dropped to 0.13 - well below their long-term average of 0.49, suggesting their price drivers have been diverging.

Return for Risk

CACI vs. VFIAX — Risk / Return Rank

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

CACI

CACI Risk / Return Rank: 42
CACI Sharpe Ratio Rank: 45
CACI Sortino Ratio Rank: 40
CACI Omega Ratio Rank: 39
CACI Calmar Ratio Rank: 44
CACI Martin Ratio Rank: 44

VFIAX

VFIAX Risk / Return Rank: 65
VFIAX Sharpe Ratio Rank: 63
VFIAX Sortino Ratio Rank: 59
VFIAX Omega Ratio Rank: 61
VFIAX Calmar Ratio Rank: 65
VFIAX Martin Ratio Rank: 77

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.

CACI vs. VFIAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for CACI International Inc (CACI) and Vanguard 500 Index Fund Admiral Shares (VFIAX). 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.

	CACI	VFIAX	Difference
Sharpe ratio: Return per unit of total volatility	-0.02	1.77	-1.79
Sortino ratio: Return per unit of downside risk	0.22	2.43	-2.21
Omega ratio: Gain probability vs. loss probability	1.03	1.32	-0.29
Calmar ratio: Return relative to maximum drawdown	-0.02	2.48	-2.50
Martin ratio: Return relative to average drawdown	-0.05	10.91	-10.96

CACI vs. VFIAX - Sharpe Ratio Comparison

The current CACI Sharpe Ratio is -0.02, which is lower than the VFIAX Sharpe Ratio of 1.77. The chart below compares the historical Sharpe Ratios of CACI and VFIAX, 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

CACI vs. VFIAX - Drawdown Comparison

The maximum CACI drawdown since its inception was -62.89%, which is greater than VFIAX's maximum drawdown of -55.20%. Use the drawdown chart below to compare losses from any high point for CACI and VFIAX.

Drawdown Indicators

	CACI	VFIAX	Difference
Max Drawdown Largest peak-to-trough decline	-62.89%	-55.20%	-7.69%
Max Drawdown (1Y) Largest decline over 1 year	-33.06%	-8.90%	-24.16%
Max Drawdown (3Y) Largest decline over 3 years	-42.88%	-18.75%	-24.13%
Max Drawdown (5Y) Largest decline over 5 years	-42.88%	-24.53%	-18.35%
Max Drawdown (10Y) Largest decline over 10 years	-42.88%	-33.83%	-9.05%
Current Drawdown Current decline from peak	-27.82%	-0.32%	-27.50%
Average Drawdown Average peak-to-trough decline	-19.10%	-9.37%	-9.73%
Ulcer Index Depth and duration of drawdowns from previous peaks	13.63%	2.02%	+11.61%

Volatility

CACI vs. VFIAX - Volatility Comparison

CACI International Inc (CACI) has a higher volatility of 13.17% compared to Vanguard 500 Index Fund Admiral Shares (VFIAX) at 4.26%. This indicates that CACI's price experiences larger fluctuations and is considered to be riskier than VFIAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CACI	VFIAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	13.17%	4.26%	+8.91%
Volatility (6M) Calculated over the trailing 6-month period	25.66%	9.96%	+15.70%
Volatility (1Y) Calculated over the trailing 1-year period	33.87%	12.52%	+21.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	27.53%	17.00%	+10.53%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	28.17%	18.05%	+10.12%

Dividends

CACI vs. VFIAX - Dividend Comparison

CACI has not paid dividends to shareholders, while VFIAX's dividend yield for the trailing twelve months is around 1.05%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CACI CACI International Inc	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VFIAX Vanguard 500 Index Fund Admiral Shares	1.05%	1.12%	1.24%	1.45%	1.68%	1.24%	1.53%	1.87%	2.05%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both CACI and VFIAX in my portfolio?

CACI and VFIAX have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CACI or VFIAX?

CACI has higher volatility (13.17%) compared to VFIAX (4.26%). In terms of maximum drawdown, CACI dropped -62.89% vs VFIAX's -55.20%.

Which has better risk-adjusted returns?

VFIAX currently has the higher Sharpe Ratio (1.77 vs -0.02), 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.