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ETF · holdings as filed 2026-03-31

What's inside VO?

VANGUARD MID-CAP INDEX FUND
Holdings
291
positions in the fund
Top 10
9%
of fund assets
Expense ratio
0.03%
net, per year
Fund size
$198B
total net assets

Top 20 holdings

RankLogoTicker / NameWeight
1
V
VRTVERTIV HOLDINGS CO-A
1.03%
2
H
HWMHOWMET AEROSPACE INC
1.01%
3
W
WDCWESTERN DIGITAL CORP
1.00%
4
C
CEGCONSTELLATION ENERGY
0.94%
5
S
STXSEAGATE TECHNOLOGY HOLDINGS
0.93%
6
P
PWRQUANTA SERVICES INC
0.89%
7
S
SLBSLB LTD
0.84%
8
C
CMICUMMINS INC
0.81%
9
V
VLOVALERO ENERGY CORP
0.80%
10
P
PSXPHILLIPS 66
0.79%
11
M
MPCMARATHON PETROLEUM CORP
0.78%
12
M
MSIMOTOROLA SOLUTIONS INC
0.78%
13
C
CRHCRH PLC
0.76%
14
R
ROSTROSS STORES INC
0.76%
15
G
GMGENERAL MOTORS CO
0.73%
16
R
RCLROYAL CARIBBEAN CRUISES LTD
0.73%
17
T
TDGTRANSDIGM GROUP INC
0.71%
18
W
WBDWARNER BROS DISCOVERY INC
0.70%
19
L
LHXL3HARRIS TECHNOLOGIES INC
0.70%
20
N
NETCLOUDFLARE INC - CLASS A
0.68%
Sectors
Top holdings — Information Technology
Your 10 largest positions in this sector
1
V
VRTVERTIV HOLDINGS CO-A
1.03%
2
W
WDCWESTERN DIGITAL CORP
1.00%
3
S
STXSEAGATE TECHNOLOGY HOLDINGS
0.93%
4
C
CMICUMMINS INC
0.81%
5
M
MSIMOTOROLA SOLUTIONS INC
0.78%
6
N
NETCLOUDFLARE INC - CLASS A
0.68%
7
B
BKRBAKER HUGHES CO
0.66%
8
D
DASHDOORDASH INC - A
0.57%
9
E
EAELECTRONIC ARTS INC
0.56%
10
M
MPWRMONOLITHIC POWER SYSTEMS INC
0.55%
Geography
Top holdings — United States
Your 10 largest positions in this country
1
V
VRTVERTIV HOLDINGS CO-A
1.03%
2
H
HWMHOWMET AEROSPACE INC
1.01%
3
W
WDCWESTERN DIGITAL CORP
1.00%
4
C
CEGCONSTELLATION ENERGY
0.94%
5
P
PWRQUANTA SERVICES INC
0.89%
6
C
CMICUMMINS INC
0.81%
7
V
VLOVALERO ENERGY CORP
0.80%
8
P
PSXPHILLIPS 66
0.79%
9
M
MPCMARATHON PETROLEUM CORP
0.78%
10
M
MSIMOTOROLA SOLUTIONS INC
0.78%
Geography reflects each issuer's registered business address per SEC EDGAR filings where available, falling back to the exchange or listing where no SEC filing exists — not necessarily where a company's stock is primarily listed (e.g. TSMC is classified as Taiwan even though its ADR trades on the NYSE).
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Data source: official SEC Form N-PORT filings (as of 2026-03-31); expense ratio from SEC prospectus (risk/return) filings. Fund holdings are disclosed quarterly and may reflect a 60-day reporting delay.
Informational and educational only — not investment advice.