Vanguard MStar Mid Cap Index Investor (VIMSX)

Fund Assets	216.43B
Expense Ratio	0.167%
Min. Investment	$3,000
Turnover	16.00%
Dividend (ttm)	1.09
Dividend Yield	1.22%
Dividend Growth	-0.51%
Payout Frequency	Quarterly
Ex-Dividend Date	Sep 28, 2026

Previous Close	88.37
YTD Return	12.61%
1-Year Return	12.20%
5-Year Return	37.71%
52-Week Low	75.90
52-Week High	92.26
Beta (5Y)	1.15
Holdings	278
Inception Date	May 21, 1998

About VIMSX

Vanguard Mid-Cap Index Fund Investor Shares is a mutual fund designed to replicate the performance of the CRSP US Mid Cap Index, which covers a broad spectrum of medium-sized U.S. companies. This fund employs a passive management strategy, aiming to deliver returns in line with its benchmark by investing in a diversified portfolio of mid-cap stocks. These stocks typically represent companies that are well-established but not dominant in their industries, offering a balance of growth potential and financial stability. Notable features of this fund include its extensive diversification—holding over 300 stocks—with no significant concentration in any single company or sector. The fund's portfolio closely mirrors the sector weights and style of its peer group, while its market-cap weighted approach helps reduce unnecessary trading and associated costs. With a relatively low expense ratio of 0.17% and a minimum investment requirement of $3,000, the fund is recognized for its cost efficiency. Regular quarterly dividends and a disciplined approach to turnover further enhance its appeal. In the broader market context, this fund offers investors core exposure to U.S. mid-cap equities, serving as a foundational holding in diversified portfolios seeking to capture the growth dynamics of mid-sized firms.

• Fund Family: Vanguard
• Category: Mid-Cap Blend
• Performance Rating: Above Average
• Risk Rating: Below Average
• Stock Exchange: Nasdaq
• Ticker Symbol: VIMSX
• Share Class: Investor Shares
• Index: CRSP US Mid Cap TR

Performance

VIMSX had a total return of 12.20% in the past year, including dividends. Since the fund's inception, the average annual return has been 10.01%.

Equivalent ETF

VIMSX has an equivalent ETF with the ticker symbol VO, the Vanguard Morningstar Mid-Cap ETF. This is an ETF from the same fund company that follows the same index. It has an expense ratio of 0.03% compared to 0.167% for VIMSX.

Symbol	Name	Expense Ratio
VO	Vanguard Morningstar Mid-Cap ETF	0.03%

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

Symbol	Share Class	Expense Ratio
VMCPX	Institutional Plus Shares	0.02%
VMCIX	Institutional Shares	0.03%
VIMAX	Admiral Shares	0.05%

Top 10 Holdings

9.72% of assets

Name	Symbol	Weight
Cloudflare, Inc.	NET	1.11%
Valero Energy Corporation	VLO	1.10%
Marathon Petroleum Corporation	MPC	1.10%
Phillips 66	PSX	1.01%
Quanta Services, Inc.	PWR	0.95%
Vertiv Holdings Co	VRT	0.92%
Datadog, Inc.	DDOG	0.91%
Howmet Aerospace Inc.	HWM	0.89%
Robinhood Markets, Inc.	HOOD	0.88%
Lumentum Holdings Inc.	LITE	0.86%

Dividend History

Ex-Dividend	Amount	Pay Date
Sep 28, 2026	$0.2858	Sep 29, 2026
Jun 26, 2026	$0.2485	Jun 29, 2026
Mar 27, 2026	$0.2639	Mar 30, 2026
Dec 22, 2025	$0.2887	Dec 23, 2025
Sep 29, 2025	$0.2562	Sep 30, 2025
Jun 30, 2025	$0.2682	Jul 1, 2025

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Oct 22, 2026

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