State Street® SPDR® S&P 400™ Mid Cap Growth ETF (MDYG) is a SPDR ETF with a 0.15% expense ratio, 249 holdings and $2.8B in net assets. Largest sector: Industrials (26%).
Fee
0.15%
expense ratio
Net assets
$2.8B
Launched
Nov 8, 2005
Holdings
249
as of Oct 22, 2026
Top 10 weight
13.5%
largest ten holdings
Largest sector
Industrials
25.9%
Yield
30-day SEC 0.68% · TTM 0.68%
as of Oct 22, 2026
Benchmark
S&P Mid Cap 400 Growth Index
MDYG's holdings are as of Oct 22, 2026.
Industrials
25.9%
Technology
21.2%
Healthcare
17.2%
Consumer Cyclical
7.9%
Financial Services
7.7%
Real Estate
6.3%
Basic Materials
4.2%
Energy
3.2%
Communication Services
2.6%
Consumer Defensive
2.1%
Utilities
1.8%
1
OKTA
Okta
1.95%
2
FTI
TechnipFMC
1.53%
3
UTHR
United Therapeutics
1.47%
4
ATI
ATI
1.29%
5
XPO
XPO
1.29%
6
THC
Tenet Healthcare
1.27%
7
ROKU
Roku
1.24%
8
NVT
nVent Electric
1.20%
9
RGLD
Royal Gold
1.16%
10
DT
Dynatrace
1.07%
11
WWD
Woodward
1.05%
12
CW
Curtiss-Wright
1.02%
13
TOST
Toast Class A
1.00%
14
ITT
ITT
0.98%
15
EXEL
Exelixis
0.95%
16
MTSI
MACOM Technology Solutions Holdings
0.93%
17
GWRE
Guidewire Software
0.92%
18
RBA
RB Global
0.91%
19
SGI
SOMNIGROUP INTERNATIONAL
0.89%
20
RBC
RBC Bearings
0.88%
21
APG
API Group
0.87%
22
MEDP
Medpace Holdings
0.86%
23
TLN
Talen Energy
0.86%
24
CRS
Carpenter Technology
0.85%
25
NBIX
Neurocrine Biosciences
0.85%
1–25 of 249
Funds listed by how much of their largest holdings they share with MDYG — 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.