Fidelity Extended Market Index Fund (FSMAX) is a Fidelity mutual fund with a 0.035% expense ratio, 3,359 holdings and $42.7B in net assets. Largest sector: Technology (23%).
Fee
0.035%
prospectus Apr 24, 2026
Net assets
$42.7B
Launched
Sep 8, 2011
Holdings
3,359
as of May 31, 2026
Top 10 weight
8.8%
largest ten holdings
Largest sector
Technology
22.6%
Yield
—
Benchmark
—
FSMAX'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.
Technology
22.6%
Industrials
19.9%
Financial Services
13.8%
Healthcare
12.5%
Consumer Cyclical
9.2%
Real Estate
5.9%
Energy
4.5%
Basic Materials
4.2%
Communication Services
3.2%
Consumer Defensive
2.3%
Utilities
1.9%
1
MRVL
MARVELL TECHNOLOGY
2.16%
2
SNOW
Snowflake
1.06%
3
NET
Cloudflare Class A
0.93%
4
BE
Bloom Energy Class A
0.89%
5
RKLB
Rocket Lab
0.82%
6
FLEX
FLEX LTD
0.67%
7
MSTR
MicroStrategy Class A
0.60%
8
LNG
CHENIERE ENERGY
0.58%
9
ALAB
Astera Labs
0.55%
10
FERG
Ferguson Plc.
0.53%
11
ALNY
Alnylam Pharmaceuticals
0.48%
12
CRDO
Credo Technology Group Holding Ltd.
0.45%
13
RBLX
ROBLOX -CLASS A
0.38%
14
NTRA
Natera
0.37%
15
RVMD
Revolution Medicines
0.37%
16
TWLO
Twilio Class A
0.35%
17
ASTS
AST SpaceMobile Class A
0.34%
18
AMRZ
AMRIZE LTD
0.34%
19
CW
Curtiss-Wright
0.33%
20
FTI
TechnipFMC
0.33%
21
MDB
MongoDB Class A
0.33%
22
NVT
nVent Electric
0.33%
23
ZM
Zoom Video Communications Inc - Class A
0.33%
24
CRWV
CoreWeave Class A
0.32%
25
FTAI
FTAI Aviation Ltd.
0.32%
1–25 of 3,359