CPOAX vs. VIGAX

Last updated Jun 25, 2026

CPOAX (Morgan Stanley Insight A) and VIGAX (Vanguard Growth Index Fund Admiral Shares) are both Large Cap Growth Equities funds - CPOAX tracks the Russell 3000 Growth Index while VIGAX tracks the CRSP US Large Cap Growth Index. Both are passively managed. Over the past 10 years, CPOAX returned 16.46%/yr vs 18.01%/yr for VIGAX. Their correlation of 0.83 suggests significant overlap in exposure. CPOAX charges 1.15%/yr vs 0.05%/yr for VIGAX.

Performance

CPOAX vs. VIGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Morgan Stanley Insight A (CPOAX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CPOAX achieves a -3.92% return, which is significantly lower than VIGAX's 3.53% return. Over the past 10 years, CPOAX has underperformed VIGAX with an annualized return of 16.46%, while VIGAX has yielded a comparatively higher 18.01% annualized return.

CPOAX

• 1D: -0.57%
• 1M: -2.34%
• YTD: -3.92%
• 6M: -7.89%
• 1Y: -0.30%
• 3Y*: 25.08%
• 5Y*: -3.59%
• 10Y*: 16.46%

VIGAX

• 1D: -2.10%
• 1M: -3.95%
• YTD: 3.53%
• 6M: 2.04%
• 1Y: 18.30%
• 3Y*: 22.74%
• 5Y*: 12.78%
• 10Y*: 18.01%

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

CPOAX vs. VIGAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CPOAX Morgan Stanley Insight A	-3.92%	18.91%	46.35%	52.72%	-61.02%	-6.83%	115.86%	33.08%	11.94%	48.40%
VIGAX Vanguard Growth Index Fund Admiral Shares	3.53%	19.43%	32.67%	46.76%	-33.14%	27.26%	40.18%	37.23%	-3.35%	27.80%

Correlation

The correlation between CPOAX and VIGAX is 0.73, 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	0.73
Correlation (3Y) Calculated over the trailing 3-year period	0.74
Correlation (5Y) Calculated over the trailing 5-year period	0.78
Correlation (10Y) Calculated over the trailing 10-year period	0.77
Correlation (All Time) Calculated using the full available price history since Nov 13, 2000	0.83

The correlation between CPOAX and VIGAX shifts across timeframes, from 0.73 (1 year) to 0.83 (all time), reflecting how their relationship changes across market environments.

Return for Risk

CPOAX vs. VIGAX — Risk / Return Rank

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

CPOAX

CPOAX Risk / Return Rank: 3
CPOAX Sharpe Ratio Rank: 3
CPOAX Sortino Ratio Rank: 4
CPOAX Omega Ratio Rank: 4
CPOAX Calmar Ratio Rank: 3
CPOAX Martin Ratio Rank: 3

VIGAX

VIGAX Risk / Return Rank: 18
VIGAX Sharpe Ratio Rank: 21
VIGAX Sortino Ratio Rank: 19
VIGAX Omega Ratio Rank: 20
VIGAX Calmar Ratio Rank: 15
VIGAX Martin Ratio Rank: 17

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.

CPOAX vs. VIGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Morgan Stanley Insight A (CPOAX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). 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.

	CPOAX	VIGAX	Difference
Sharpe ratio: Return per unit of total volatility	0.05	1.19	-1.14
Sortino ratio: Return per unit of downside risk	0.27	1.66	-1.39
Omega ratio: Gain probability vs. loss probability	1.03	1.21	-0.18
Calmar ratio: Return relative to maximum drawdown	0.05	1.22	-1.17
Martin ratio: Return relative to average drawdown	0.10	4.17	-4.06

CPOAX vs. VIGAX - Sharpe Ratio Comparison

The current CPOAX Sharpe Ratio is 0.05, which is lower than the VIGAX Sharpe Ratio of 1.19. The chart below compares the historical Sharpe Ratios of CPOAX and VIGAX, 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

CPOAX vs. VIGAX - Drawdown Comparison

The maximum CPOAX drawdown since its inception was -84.57%, which is greater than VIGAX's maximum drawdown of -50.66%. Use the drawdown chart below to compare losses from any high point for CPOAX and VIGAX.

Drawdown Indicators

	CPOAX	VIGAX	Difference
Max Drawdown Largest peak-to-trough decline	-84.57%	-50.66%	-33.91%
Max Drawdown (1Y) Largest decline over 1 year	-28.37%	-16.51%	-11.86%
Max Drawdown (3Y) Largest decline over 3 years	-31.38%	-23.04%	-8.34%
Max Drawdown (5Y) Largest decline over 5 years	-70.73%	-35.63%	-35.10%
Max Drawdown (10Y) Largest decline over 10 years	-71.33%	-35.63%	-35.70%
Current Drawdown Current decline from peak	-23.83%	-6.85%	-16.98%
Average Drawdown Average peak-to-trough decline	-39.19%	-11.94%	-27.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	13.61%	4.82%	+8.79%

Volatility

CPOAX vs. VIGAX - Volatility Comparison

Morgan Stanley Insight A (CPOAX) has a higher volatility of 10.67% compared to Vanguard Growth Index Fund Admiral Shares (VIGAX) at 6.88%. This indicates that CPOAX's price experiences larger fluctuations and is considered to be riskier than VIGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CPOAX	VIGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.67%	6.88%	+3.79%
Volatility (6M) Calculated over the trailing 6-month period	22.84%	13.48%	+9.36%
Volatility (1Y) Calculated over the trailing 1-year period	29.97%	17.00%	+12.97%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	39.92%	22.51%	+17.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	34.19%	21.65%	+12.54%

CPOAX vs. VIGAX - Expense Ratio Comparison

CPOAX has a 1.15% expense ratio, which is higher than VIGAX's 0.05% expense ratio.

Dividends

CPOAX vs. VIGAX - Dividend Comparison

CPOAX has not paid dividends to shareholders, while VIGAX's dividend yield for the trailing twelve months is around 0.38%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CPOAX Morgan Stanley Insight A	0.00%	0.00%	0.61%	0.00%	51.84%	14.94%	9.06%	7.29%	9.33%	28.73%	9.83%	8.92%
VIGAX Vanguard Growth Index Fund Admiral Shares	0.38%	0.40%	0.46%	0.57%	0.69%	0.47%	0.66%	0.94%	1.31%	1.14%	1.39%	1.31%

Frequently Asked Questions

Can I hold both CPOAX and VIGAX in my portfolio?

CPOAX and VIGAX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CPOAX or VIGAX?

CPOAX has higher volatility (10.67%) compared to VIGAX (6.88%). In terms of maximum drawdown, CPOAX dropped -84.57% vs VIGAX's -50.66%.

Which has better risk-adjusted returns?

VIGAX currently has the higher Sharpe Ratio (1.19 vs 0.05), 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.