Columbia Mid Cap Index Fund Institutional 3 Class (CMDYX) is a Columbia mutual fund with a 0.20% expense ratio, 400 holdings and $2.5B in net assets. Largest sector: Industrials (26%).
Fee
0.20%
prospectus Jun 25, 2026
Net assets
$2.5B
Launched
Mar 1, 2017
Holdings
400
as of May 31, 2026
Top 10 weight
8.3%
largest ten holdings
Largest sector
Industrials
25.7%
Yield
—
Benchmark
—
CMDYX's holdings are as of May 31, 2026 — a mutual fund reports its holdings to the SEC quarterly, one to three months after the date.
Industrials
25.7%
Technology
16.8%
Financial Services
13.7%
Consumer Cyclical
10.5%
Healthcare
8.8%
Real Estate
7.7%
Energy
4.9%
Basic Materials
4.8%
Consumer Defensive
3.2%
Utilities
3.0%
Communication Services
1.0%
1
FLEX
FLEX LTD
1.58%
2
TWLO
Twilio Class A
0.82%
3
FTI
TechnipFMC
0.79%
4
CW
Curtiss-Wright
0.79%
5
NVT
nVent Electric
0.77%
6
STRL
Sterling Infrastructure
0.75%
7
XPO
XPO
0.72%
8
P
Pure Storage Class A
0.71%
9
ILMN
ILLUMINA
0.71%
10
UTHR
United Therapeutics
0.68%
11
ATI
ATI
0.68%
12
MTSI
MACOM Technology Solutions Holdings
0.67%
13
FN
Fabrinet
0.67%
14
CRS
Carpenter Technology
0.67%
15
NXT
NEXTPOWER CLASS A
0.66%
16
MTZ
MASTEC
0.66%
17
MKSI
MKS
0.62%
18
ENTG
Entegris
0.60%
19
OKTA
Okta
0.60%
20
WWD
Woodward
0.59%
21
BURL
Burlington Stores
0.57%
22
LSCC
Lattice Semiconductor
0.57%
23
AA
Alcoa
0.57%
24
RS
RELIANCE
0.57%
25
RBA
RB Global
0.56%
1–25 of 400