State Street® SPDR® S&P MIDCAP 400® ETF Trust (MDY) is a SPDR ETF with a 0.23% expense ratio, 400 holdings and $25.6B in net assets. Largest sector: Industrials (22%).
Fee
0.23%
expense ratio
Net assets
$25.6B
Launched
May 4, 1995
Holdings
400
as of Oct 22, 2026
Top 10 weight
6.9%
largest ten holdings
Largest sector
Industrials
22.0%
Yield
—
Benchmark
S&P MidCap 400
MDY's holdings are as of Oct 22, 2026.
Industrials
22.0%
Technology
15.2%
Financial Services
14.4%
Healthcare
10.8%
Consumer Cyclical
10.7%
Real Estate
8.0%
Energy
5.7%
Basic Materials
5.0%
Consumer Defensive
3.5%
Utilities
3.0%
Communication Services
1.7%
1
OKTA
Okta
0.97%
2
FTI
TechnipFMC
0.76%
3
UTHR
United Therapeutics
0.73%
4
USFD
US Foods Holding
0.66%
5
ATI
ATI
0.64%
6
XPO
XPO
0.64%
7
THC
Tenet Healthcare
0.63%
8
ROKU
Roku
0.62%
9
RS
RELIANCE
0.62%
10
NVT
nVent Electric
0.60%
11
PR
Permian Resources Class A
0.60%
12
ROIV
Roivant Sciences Ltd.
0.59%
13
RGLD
Royal Gold
0.58%
14
SNX
TD SYNNEX
0.58%
15
ENTG
Entegris
0.57%
16
OVV
OVINTIV
0.56%
17
DINO
HF SINCLAIR
0.55%
18
NTNX
NUTANIX A
0.55%
19
DT
Dynatrace
0.53%
20
EWBC
East West Bancorp
0.53%
21
RGA
REINSURANCE GROUP OF AMERICA
0.52%
22
WWD
Woodward
0.52%
23
CW
Curtiss-Wright
0.51%
24
TOST
Toast Class A
0.50%
25
ITT
ITT
0.49%
1–25 of 400
Funds listed by how much of their largest holdings they share with MDY — not a ranking.
Data from SPDR; prices and returns from market data. Page updated October 29, 2026. Holdings and figures change over time. For information only — not investment advice.