VO's largest holdings are VERTIV HOLDINGS CO, HOWMET AEROSPACE INC., WESTERN DIGITAL CORPORATION, CONSTELLATION ENERGY CORPORATION., SEAGATE TECHNOLOGY HOLDINGS PUBLIC LIMITED COMPANY. The full top list is on this page.

How concentrated is VO?

The top 10 holdings are 9.0% of the fund, across 300 positions.

The total expense ratio on record is 0.03%. That is cheaper than 99% of the 2561 US-listed equity funds we track.

Which sectors dominate VO?

By weight of its equity holdings: Industrials 18.1%, Technology 14.2%, Financial Services 13.8%.

How similar is VO to the S&P 500 (VOO)?

16.6% of VO overlaps with the S&P 500 (VOO) by weight, across 253 shared companies.

What is VO's P/E ratio?

Computed from company annual reports and filed position values, VO's weighted price-to-earnings ratio is 22.0, covering 92.0% of the fund by weight. The weighted price-to-book ratio is 2.95.

US-listed

VO

seeks to track the performance of a benchmark index that measures the investment return of mid-capitalization stocks.

VANGUARD MID-CAP INDEX FUND

Vanguard

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Concentration

Well diversifiedtop 10 = 9.0%

diversifiedconcentrated

GROWTH · NAV (USD)rebased to 0%

Holdings

300

as of 2026-03-31

Top 10

9.0%

TER

0.03%

cheaper than 99% of peers

Net assets

US$198B

Largest

1.0%

P / E

22.0

covers 92.0% by weight

Sections

Holdings as of 2026-03-31.

01Overview

the fund's regulatory facts

Fund currency

USD

Volatility 1Y

12.6%

How it tracks

Index, full replication

02Valuation and performance

price · as of 2026-07-23

+1.0%

+4.9%

+7.8%

YTD

+11.5%

+13.2%

Valuation275 companies covered · weighted, profitable holdings only

22.0

price / earnings

covers 92.0% by weight

4.5%

earnings yield

2.95

price / book

covers 87.0% by weight

Computed from company filings and reported position values. How this is computed. Not investment advice.

03Holdings

50 largest · as of 2026-03-31

#	Company	Identifier	Weight
1	VERTIV HOLDINGS CO US	VRT	1.0
2	HOWMET AEROSPACE INC. US	HWM	1.0
3	WESTERN DIGITAL CORPORATION US	WDC	1.0
4	CONSTELLATION ENERGY CORPORATION. US	CEG	0.9
5	SEAGATE TECHNOLOGY HOLDINGS PUBLIC LIMITED COMPANY IE	STX	0.9
6	Quanta Services Inc US	PWR	0.9
7	SLB Ltd US	SLB	0.8
8	CUMMINS INC. US	CMI	0.8
9	Valero Energy Corp US	VLO	0.8
10	PHILLIPS 66 US	PSX	0.8
11	Marathon Petroleum Corp US	MPC	0.8
12	MOTOROLA SOLUTIONS, INC. US	MSI	0.8
13	CRH PUBLIC LIMITED COMPANY IE	CRH	0.8
14	ROSS STORES, INC. US	ROST	0.8
15	GENERAL MOTORS COMPANY US	GM	0.7
16	Royal Caribbean Cruises Ltd LR	RCL	0.7
17	TransDigm Group Inc US	TDG	0.7
18	Warner Bros Discovery Inc US	WBD	0.7
19	L3HARRIS TECHNOLOGIES, INC. US	LHX	0.7
20	CLOUDFLARE INC - CLASS A US	NET	0.7
21	Digital Realty Trust, Inc. US	DLR	0.7
22	TE CONNECTIVITY PUBLIC LIMITED COMPANY IE	TEL	0.7
23	PACCAR Inc US	PCAR	0.7
24	Baker Hughes Co US	BKR	0.7
25	Newmont Corp US	NEM	0.6
26	Cencora Inc US	COR	0.6
27	Corteva Inc US	CTVA	0.6
28	REALTY INCOME CORP US	O	0.6
29	ONEOK, INC. US	OKE	0.6
30	CHENIERE ENERGY, INC. US	LNG	0.6
31	ARTHUR J. GALLAGHER & CO. US	AJG	0.6
32	Target Corp US	TGT	0.6
33	ROBINHOOD MARKETS INC - A US	HOOD	0.6
34	Dominion Energy, Inc. US	D	0.6
35	TARGA RESOURCES CORP. US	TRGP	0.6
36	THE ALLSTATE CORPORATION US	ALL	0.6
37	FASTENAL COMPANY US	FAST	0.6
38	CORNING INCORPORATED US	GLW	0.6
39	DOORDASH INC - A US	DASH	0.6
40	ELECTRONIC ARTS INC. US	EA	0.6
41	VISTRA CORP. US	VST	0.6
42	ENTERGY CORPORATION US	ETR	0.6
43	MONOLITHIC POWER SYSTEMS, INC. US	MPWR US	0.6
44	Cardinal Health Inc US	CAH	0.5
45	Xcel Energy Inc. US	XEL	0.5
46	EXELON CORPORATION US	EXC	0.5
47	W.W. GRAINGER, INC. US	GWW	0.5
48	AMETEK, INC. US	AME	0.5
49	KEYSIGHT TECHNOLOGIES, INC. US	KEYS	0.5
50	Occidental Petroleum Corp US	OXY	0.5

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04Exposure

Equity 99.6%

By sector

Industrials18.1%

Technology14.2%

Financial Services13.8%

Consumer Cyclical9.4%

Utilities8.8%

Energy8.5%

Healthcare8.1%

Real Estate5.4%

Consumer Defensive5.1%

Materials4.5%

Communication Services2.5%

By country

USUnited States94.0%

IEIreland3.5%

LRLR0.7%

CACanada0.6%

CHSwitzerland0.4%

BMBermuda0.4%

GBUnited Kingdom0.3%

NLNetherlands0.1%

CurrencyUSD 94.4% EUR 3.6% CAD 0.6% CHF 0.4% GBP 0.3%

05Similar funds

funds with comparable exposure

VOO

the S&P 500 (VOO)

253 shared companies

16.6%compare →

VTI

the US total market (VTI)

288 shared companies

16.2%compare →

Ranked by how much of their holdings you already own through this fund. Overlap by weight where shown.

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