VITPX vs. MIGYX

Last updated Aug 4, 2026

VITPX (Vanguard Institutional Total Stock Market Index Fund Institutional Plus Shares) and MIGYX (Invesco Main Street Fund Class Y) are both Large Cap Blend Equities funds. Over the past 10 years, VITPX returned 14.69%/yr vs 11.90%/yr for MIGYX. Their 0.97 correlation means they have historically moved very closely together. VITPX charges 0.02%/yr vs 0.56%/yr for MIGYX.

Performance

VITPX vs. MIGYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Institutional Total Stock Market Index Fund Institutional Plus Shares (VITPX) and Invesco Main Street Fund Class Y (MIGYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VITPX achieves a 10.50% return, which is significantly higher than MIGYX's 7.09% return. Over the past 10 years, VITPX has outperformed MIGYX with an annualized return of 14.69%, while MIGYX has yielded a comparatively lower 11.90% annualized return.

VITPX

• 1D: 0.57%
• 1M: -0.21%
• 6M: 8.17%
• YTD: 10.50%
• 1Y: 21.83%
• 3Y*: 19.48%
• 5Y*: 12.07%
• 10Y*: 14.69%
• ALL TIME*: 9.62%

MIGYX

• 1D: 0.73%
• 1M: 0.65%
• 6M: 5.98%
• YTD: 7.09%
• 1Y: 15.83%
• 3Y*: 16.85%
• 5Y*: 10.41%
• 10Y*: 11.90%
• ALL TIME*: 8.49%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
MIGYX Invesco Main Street Fund Class Y	$0.00	$0.00	$0.00
VITPX Vanguard Institutional Total Stock Market Index Fund Institutional Plus Shares	$0.00	$0.00	$0.00

VITPX vs. MIGYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VITPX Vanguard Institutional Total Stock Market Index Fund Institutional Plus Shares	10.50%	17.17%	25.43%	26.01%	-19.48%	25.76%	20.95%	30.87%	-5.59%	20.51%
MIGYX Invesco Main Street Fund Class Y	7.09%	16.31%	23.93%	23.33%	-20.02%	27.65%	14.68%	22.67%	-8.04%	17.04%

Correlation

The correlation between VITPX and MIGYX is 0.88, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.88
Correlation (3Y) Balances recent behavior with more history.	0.93
Correlation (5Y) Shows whether the relationship held over a longer period.	0.96
Correlation (10Y) Provides a long-term view across more market conditions.	0.96
Correlation (All Time) Calculated using the full available price history since May 31, 2001	0.97

The correlation between VITPX and MIGYX has been stable across timeframes, ranging from 0.88 to 0.97 - a consistent structural relationship.

Return for Risk

VITPX vs. MIGYX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

VITPX

VITPX Risk / Return Rank: 59
VITPX Sharpe Ratio Rank: 55
VITPX Sortino Ratio Rank: 51
VITPX Omega Ratio Rank: 51
VITPX Calmar Ratio Rank: 62
VITPX Martin Ratio Rank: 75

MIGYX

MIGYX Risk / Return Rank: 33
MIGYX Sharpe Ratio Rank: 33
MIGYX Sortino Ratio Rank: 34
MIGYX Omega Ratio Rank: 31
MIGYX Calmar Ratio Rank: 30
MIGYX Martin Ratio Rank: 36

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

VITPX vs. MIGYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Institutional Total Stock Market Index Fund Institutional Plus Shares (VITPX) and Invesco Main Street Fund Class Y (MIGYX). 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.

	VITPX	MIGYX	Difference
Sharpe ratio: Return per unit of total volatility	1.52	1.16	+0.35
Sortino ratio: Return per unit of downside risk	2.11	1.72	+0.39
Omega ratio: Gain probability vs. loss probability	1.27	1.21	+0.06
Calmar ratio: Return relative to maximum drawdown	2.23	1.42	+0.81
Martin ratio: Return relative to average drawdown	9.65	5.67	+3.98

VITPX vs. MIGYX - Sharpe Ratio Comparison

The current VITPX Sharpe Ratio is 1.52, which is higher than the MIGYX Sharpe Ratio of 1.16. The chart below compares the historical Sharpe Ratios of VITPX and MIGYX, 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

VITPX vs. MIGYX - Drawdown Comparison

The maximum VITPX drawdown since its inception was -55.28%, roughly equal to the maximum MIGYX drawdown of -56.98%. Use the drawdown chart below to compare losses from any high point for VITPX and MIGYX.

Drawdown Indicators

	VITPX	MIGYX	Difference
Max Drawdown Largest peak-to-trough decline	-55.28%	-56.98%	+1.70%
Max Drawdown (1Y) Largest decline over 1 year	-8.92%	-10.87%	+1.95%
Max Drawdown (3Y) Largest decline over 3 years	-19.35%	-19.88%	+0.53%
Max Drawdown (5Y) Largest decline over 5 years	-25.31%	-26.59%	+1.28%
Max Drawdown (10Y) Largest decline over 10 years	-34.99%	-35.48%	+0.49%
Current Drawdown Current decline from peak	-1.32%	-1.05%	-0.27%
Average Drawdown Average peak-to-trough decline	-7.98%	-10.56%	+2.58%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.06%	2.59%	-0.53%

Volatility

VITPX vs. MIGYX - Volatility Comparison

Vanguard Institutional Total Stock Market Index Fund Institutional Plus Shares (VITPX) and Invesco Main Street Fund Class Y (MIGYX) have volatilities of 3.46% and 3.51%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VITPX	MIGYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.46%	3.51%	-0.05%
Volatility (6M) Calculated over the trailing 6-month period	10.28%	10.38%	-0.10%
Volatility (1Y) Calculated over the trailing 1-year period	13.14%	13.33%	-0.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.45%	17.03%	+0.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.41%	17.92%	+0.49%

VITPX vs. MIGYX - Expense Ratio Comparison

VITPX has a 0.02% expense ratio, which is lower than MIGYX's 0.56% expense ratio.

Dividends

VITPX vs. MIGYX - Dividend Comparison

VITPX's dividend yield for the trailing twelve months is around 2.31%, less than MIGYX's 7.30% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MIGYX Invesco Main Street Fund Class Y	7.30%	7.82%	6.36%	7.51%	5.01%	19.63%	3.23%	0.98%	20.13%	7.80%	3.22%	14.18%
VITPX Vanguard Institutional Total Stock Market Index Fund Institutional Plus Shares	2.31%	2.64%	4.14%	2.41%	6.48%	5.38%	11.57%	2.91%	3.93%	1.90%	2.80%	2.30%

Frequently Asked Questions

Can I hold both VITPX and MIGYX in my portfolio?

VITPX and MIGYX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VITPX or MIGYX?

MIGYX has higher volatility (3.51%) compared to VITPX (3.46%). In terms of maximum drawdown, VITPX dropped -55.28% vs MIGYX's -56.98%.

Which has better risk-adjusted returns?

VITPX currently has the higher Sharpe Ratio (1.52 vs 1.16), 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.