S&P/ASX 200 Companies

Every company in the S&P/ASX 200 with its short interest, plus the next rebalance and likely additions and removals.The index has 200 places; the iShares IOZ fund that tracks it currently holds 199 companies, so one constituent isn’t listed here, usually because of a suspended stock or a change in progress.

Updated 18 October 2026Membership from the iShares IOZ ETF holdings
199
Index Members
48
≥5% Short Interest
$3.39T
Total Market Cap
Q4 2026
Next Rebalance

All 199 CompaniesSorted by market cap

StockMkt CapShort %
BHP Group Limited logo
BHP

BHP Group Limited

$305.1B1.6%
Commonwealth Bank of Australia logo
CBA

Commonwealth Bank of Australia

$258.1B2.6%
Rio Tinto Group logo
RIO

Rio Tinto Group

$252.0B9.7%
Newmont Corporation logo
NEM

Newmont Corporation

$175.1B2.8%
National Australia Bank Limited logo
NAB

National Australia Bank Limited

$120.4B2.2%
Westpac Banking Corporation logo
WBC

Westpac Banking Corporation

$120.0B2.9%
ANZ Group Holdings Limited logo
ANZ

ANZ Group Holdings Limited

$117.1B1.5%
Macquarie Group Limited logo
MQG

Macquarie Group Limited

$95.0B0.5%
CSL Limited logo
CSL

CSL Limited

$92.2B1.1%
Wesfarmers Limited logo
WES

Wesfarmers Limited

$90.0B1.9%
Block, Inc. logo
XYZ

Block, Inc

$69.3B1.0%
Woodside Energy Group Ltd logo
WDS

Woodside Energy Group Ltd

$63.0B2.9%
Goodman Group logo
GMG

Goodman Group

$54.2B1.6%
Telstra Group Limited logo
TLS

Telstra Group Limited

$52.6B1.4%
Woolworths Group Limited logo
WOW

Woolworths Group Limited

$50.3B1.4%
ResMed Inc. logo
RMD

ResMed Inc

$48.3B0.6%
Fortescue Ltd logo
FMG

Fortescue Ltd

$46.8B3.6%
Transurban Group logo
TCL

Transurban Group

$42.6B2.2%
QBE Insurance Group Limited logo
QBE

QBE Insurance Group Limited

$38.4B0.6%
Aristocrat Leisure Limited logo
ALL

Aristocrat Leisure Limited

$37.3B1.1%
Northern Star Resources Limited logo
NST

Northern Star Resources Limited

$35.8B3.2%
Sigma Healthcare Limited logo
SIG

Sigma Healthcare Limited

$32.8B5.4%
Coles Group Limited logo
COL

Coles Group Limited

$32.1B1.3%
SGH Limited logo
SGH

SGH Limited

$31.4B1.9%
Santos Limited logo
STO

Santos Limited

$29.6B0.3%
Amcor plc logo
AMC

Amcor plc

$28.7B0.7%
Brambles Limited logo
BXB

Brambles Limited

$26.8B1.6%
Evolution Mining Limited logo
EVN

Evolution Mining Limited

$25.8B4.5%
News Corporation logo
NWS

News Corporation

$25.7B1.3%
Computershare Limited logo
CPU

Computershare Limited

$24.3B0.8%
Fisher & Paykel Healthcare Corporation Limited logo
FPH

Fisher & Paykel Healthcare Corporation Limited

$23.2B0.0%
James Hardie Industries plc logo
JHX

James Hardie Industries plc

$21.5B3.1%
REA Group Limited logo
REA

REA Group Limited

$21.1B3.7%
Origin Energy Limited logo
ORG

Origin Energy Limited

$20.8B1.1%
Suncorp Group Limited logo
SUN

Suncorp Group Limited

$20.8B1.6%
South32 Limited logo
S32

South32 Limited

$20.7B1.6%
Insurance Australia Group Limited logo
IAG

Insurance Australia Group Limited

$20.0B1.4%
Pro Medicus Limited logo
PME

Pro Medicus Limited

$18.4B4.1%
Scentre Group logo
SCG

Scentre Group

$17.9B0.5%
Washington H. Soul Pattinson and Company Limited logo
SOL

Washington H. Soul Pattinson and Company Limited

$17.5B3.0%
Alcoa Corporation logo
AAI

Alcoa Corporation

$15.7B2.3%
APA Group logo
APA

APA Group

$15.0B1.8%
BlueScope Steel Limited logo
BSL

BlueScope Steel Limited

$14.1B0.7%
Medibank Private Limited logo
MPL

Medibank Private Limited

$13.1B3.8%
Ramsay Health Care Limited logo
RHC

Ramsay Health Care Limited

$12.8B5.2%
WiseTech Global Limited logo
WTC

WiseTech Global Limited

$12.6B11.0%
Qantas Airways Limited logo
QAN

Qantas Airways Limited

$12.6B1.3%
ASX Limited logo
ASX

ASX Limited

$12.3B5.5%
The Lottery Corporation Limited logo
TLC

The Lottery Corporation Limited

$11.7B10.0%
Codan Limited logo
CDA

Codan Limited

$11.5B0.4%
Auckland International Airport Limited logo
AIA

Auckland International Airport Limited

$11.3B1.0%
Lynas Rare Earths Limited logo
LYC

Lynas Rare Earths Limited

$11.1B11.8%
Vicinity Centres logo
VCX

Vicinity Centres

$11.0B4.0%
Xero Limited logo
XRO

Xero Limited

$10.9B5.9%
Reece Limited logo
REH

Reece Limited

$10.7B2.7%
Orica Limited logo
ORI

Orica Limited

$10.6B0.2%
Technology One Limited logo
TNE

Technology One Limited

$10.4B1.4%
Infratil Limited logo
IFT

Infratil Limited

$10.4B1.0%
Stockland logo
SGP

Stockland

$10.3B0.4%
ALS Limited logo
ALQ

ALS Limited

$10.3B0.8%
Ampol Limited logo
ALD

Ampol Limited

$10.2B2.5%
Capstone Copper Corp. logo
CSC

Capstone Copper Corp

$9.9B0.4%
Sandfire Resources Limited logo
SFR

Sandfire Resources Limited

$9.6B2.8%
PLS Group Limited logo
PLS

PLS Group Limited

$9.6B12.9%
Sonic Healthcare Limited logo
SHL

Sonic Healthcare Limited

$9.2B1.2%
CAR Group Limited logo
CAR

CAR Group Limited

$9.0B5.0%
Light & Wonder, Inc. logo
LNW

Light & Wonder, Inc

$9.0B0.7%
Mineral Resources Limited logo
MIN

Mineral Resources Limited

$8.9B4.9%
Charter Hall Group logo
CHC

Charter Hall Group

$8.8B1.6%
The GPT Group logo
GPT

The GPT Group

$8.7B1.0%
Cochlear Limited logo
COH

Cochlear Limited

$8.6B1.9%
Genesis Minerals Limited logo
GMD

Genesis Minerals Limited

$8.5B8.8%
Perseus Mining Limited logo
PRU

Perseus Mining Limited

$8.3B0.3%
NexGen Energy Ltd. logo
NXG

NexGen Energy Ltd

$8.2B2.9%
JB Hi-Fi Limited logo
JBH

JB Hi-Fi Limited

$7.9B3.4%
Yancoal Australia Ltd logo
YAL

Yancoal Australia Ltd

$7.9B0.7%
TPG Telecom Limited logo
TPG

TPG Telecom Limited

$7.3B2.1%
Mirvac Group logo
MGR

Mirvac Group

$7.1B2.0%
NEXTDC Limited logo
NXT

NEXTDC Limited

$7.0B8.6%
Dyno Nobel Limited logo
DNL

Dyno Nobel Limited

$6.9B0.9%
Ramelius Resources Limited logo
RMS

Ramelius Resources Limited

$6.9B1.5%
Greatland Resources Limited logo
GGP

Greatland Resources Limited

$6.7B2.3%
Challenger Limited logo
CGF

Challenger Limited

$6.7B0.3%
Capricorn Metals Ltd logo
CMM

Capricorn Metals Ltd

$6.6B0.3%
Ansell Limited logo
ANN

Ansell Limited

$6.5B1.7%
Steadfast Group Limited logo
SDF

Steadfast Group Limited

$6.4B4.0%
Aurizon Holdings Limited logo
AZJ

Aurizon Holdings Limited

$6.3B0.8%
Whitehaven Coal Limited logo
WHC

Whitehaven Coal Limited

$6.2B1.3%
Vault Minerals Limited logo
VAU

Vault Minerals Limited

$6.1B0.5%
Bendigo and Adelaide Bank Limited logo
BEN

Bendigo and Adelaide Bank Limited

$6.1B5.8%
DEXUS logo
DXS

Dexus

$6.1B3.3%
AGL Energy Limited logo
AGL

AGL Energy Limited

$5.9B4.9%
AMP Limited logo
AMP

AMP Limited

$5.7B0.8%
Endeavour Group Limited logo
EDV

Endeavour Group Limited

$5.6B8.6%
Cleanaway Waste Management Limited logo
CWY

Cleanaway Waste Management Limited

$5.5B2.7%
Atlas Arteria Limited logo
ALX

Atlas Arteria Limited

$5.5B0.7%
Regis Resources Limited logo
RRL

Regis Resources Limited

$5.4B1.7%
Telix Pharmaceuticals Limited logo
TLX

Telix Pharmaceuticals Limited

$5.3B10.7%
HUB24 Limited logo
HUB

HUB24 Limited

$5.2B1.5%
Harvey Norman Holdings Limited logo
HVN

Harvey Norman Holdings Limited

$5.1B3.4%
Viva Energy Group Limited logo
VEA

Viva Energy Group Limited

$5.1B0.4%
Eagers Automotive Limited logo
APE

Eagers Automotive Limited

$5.1B3.0%
The a2 Milk Company Limited logo
A2M

The a2 Milk Company Limited

$5.0B7.3%
New Hope Corporation Limited logo
NHC

New Hope Corporation Limited

$4.9B4.3%
Treasury Wine Estates Limited logo
TWE

Treasury Wine Estates Limited

$4.9B10.4%
Ventia Services Group Limited logo
VNT

Ventia Services Group Limited

$4.8B1.5%
Westgold Resources Limited logo
WGX

Westgold Resources Limited

$4.8B0.9%
SEEK Limited logo
SEK

SEEK Limited

$4.7B1.2%
Breville Group Limited logo
BRG

Breville Group Limited

$4.6B8.2%
Worley Limited logo
WOR

Worley Limited

$4.5B2.0%
Bank of Queensland Limited logo
BOQ

Bank of Queensland Limited

$4.5B4.4%
Downer EDI Limited logo
DOW

Downer EDI Limited

$4.5B1.4%
Emerald Resources NL logo
EMR

Emerald Resources NL

$4.4B2.8%
PDI Gold Limited logo
PDI

PDI Gold Limited

$4.3B4.0%
IGO Limited logo
IGO

IGO Limited

$4.1B0.7%
West African Resources Limited logo
WAF

West African Resources Limited

$4.1B0.3%
Sims Limited logo
SGM

Sims Limited

$4.1B1.2%
Netwealth Group Limited logo
NWL

Netwealth Group Limited

$4.1B1.1%
Megaport Limited logo
MP1

Megaport Limited

$4.0B3.0%
AUB Group Limited logo
AUB

AUB Group Limited

$3.7B7.4%
Pinnacle Investment Management Group Limited logo
PNI

Pinnacle Investment Management Group Limited

$3.5B6.1%
Reliance Worldwide Corporation Limited logo
RWC

Reliance Worldwide Corporation Limited

$3.5B1.1%
Metcash Limited logo
MTS

Metcash Limited

$3.4B4.8%
Paladin Energy Ltd logo
PDN

Paladin Energy Ltd

$3.3B11.8%
nib holdings limited logo
NHF

nib holdings limited

$3.2B2.8%
NRW Holdings Limited logo
NWH

NRW Holdings Limited

$3.2B0.2%
Super Retail Group Limited logo
SUL

Super Retail Group Limited

$3.1B5.3%
Nickel Industries Limited logo
NIC

Nickel Industries Limited

$3.0B0.8%
Chorus Limited logo
CNU

Chorus Limited

$2.9B2.4%
Monadelphous Group Limited logo
MND

Monadelphous Group Limited

$2.9B0.4%
Dalrymple Bay Infrastructure Limited logo
DBI

Dalrymple Bay Infrastructure Limited

$2.8B1.3%
Lovisa Holdings Limited logo
LOV

Lovisa Holdings Limited

$2.8B2.0%
Fletcher Building Limited logo
FBU

Fletcher Building Limited

$2.8B2.0%
BWP Trust logo
BWP

BWP Trust

$2.8B1.5%
Ora Banda Mining Limited logo
OBM

Ora Banda Mining Limited

$2.7B3.0%
Sunrise Energy Metals Limited logo
SRL

Sunrise Energy Metals Limited

$2.7B4.2%
Zip Co Limited logo
ZIP

Zip Co Limited

$2.7B12.9%
Mesoblast Limited logo
MSB

Mesoblast Limited

$2.6B7.7%
Neuren Pharmaceuticals Limited logo
NEU

Neuren Pharmaceuticals Limited

$2.6B2.9%
Region Group logo
RGN

Region Group

$2.5B0.6%
Magellan Financial Group Limited logo
MFG

Magellan Financial Group Limited

$2.5B5.9%
Alkane Resources Ltd logo
ALK

Alkane Resources Ltd

$2.4B2.2%
Resolute Mining Limited logo
RSG

Resolute Mining Limited

$2.4B0.8%
Charter Hall Long WALE REIT logo
CLW

Charter Hall Long WALE REIT

$2.3B1.8%
Iluka Resources Limited logo
ILU

Iluka Resources Limited

$2.3B6.7%
Liontown Limited logo
LTR

Liontown Limited

$2.3B7.2%
HomeCo Daily Needs REIT logo
HDN

HomeCo Daily Needs REIT

$2.2B1.4%
SRG Global Limited logo
SRG

SRG Global Limited

$2.2B0.8%
Bellevue Gold Limited logo
BGL

Bellevue Gold Limited

$2.2B1.5%
Flight Centre Travel Group Limited logo
FLT

Flight Centre Travel Group Limited

$2.1B10.5%
Deterra Royalties Limited logo
DRR

Deterra Royalties Limited

$2.1B1.7%
Data#3 Limited logo
DTL

Data#3 Limited

$2.1B2.7%
Electro Optic Systems Holdings Limited logo
EOS

Electro Optic Systems Holdings Limited

$2.1B10.9%
Premier Investments Limited logo
PMV

Premier Investments Limited

$2.1B1.4%
Tabcorp Holdings Limited logo
TAH

Tabcorp Holdings Limited

$2.0B1.2%
Domino's Pizza Enterprises Limited logo
DMP

Domino's Pizza Enterprises Limited

$2.0B12.1%
Charter Hall Retail REIT logo
CQR

Charter Hall Retail REIT

$2.0B0.4%
Minerals 260 Limited logo
MI6

Minerals 260 Limited

$2.0B8.2%
Beach Energy Limited logo
BPT

Beach Energy Limited

$2.0B8.0%
Perpetual Limited logo
PPT

Perpetual Limited

$2.0B4.3%
Bega Cheese Limited logo
BGA

Bega Cheese Limited

$1.9B0.9%
Perenti Limited logo
PRN

Perenti Limited

$1.9B0.3%
Centuria Industrial REIT logo
CIP

Centuria Industrial REIT

$1.7B2.1%
Imdex Limited logo
IMD

Imdex Limited

$1.7B1.5%
Austal Limited logo
ASB

Austal Limited

$1.7B2.6%
Orora Limited logo
ORA

Orora Limited

$1.7B5.4%
Lendlease Group logo
LLC

Lendlease Group

$1.7B8.9%
Ingenia Communities Group logo
INA

Ingenia Communities Group

$1.6B4.8%
Smartgroup Corporation Ltd logo
SIQ

Smartgroup Corporation Ltd

$1.6B2.7%
Catalyst Metals Limited logo
CYL

Catalyst Metals Limited

$1.5B7.3%
DroneShield Limited logo
DRO

DroneShield Limited

$1.4B16.2%
Helia Group Limited logo
HLI

Helia Group Limited

$1.4B3.8%
ARB Corporation Limited logo
ARB

ARB Corporation Limited

$1.4B4.1%
Waypoint REIT logo
WPR

Waypoint REIT

$1.4B0.8%
Develop Global Limited logo
DVP

Develop Global Limited

$1.4B8.0%
Elders Limited logo
ELD

Elders Limited

$1.3B9.6%
Champion Iron Limited logo
CIA

Champion Iron Limited

$1.3B6.6%
Superloop Limited logo
SLC

Superloop Limited

$1.3B0.9%
Service Stream Limited logo
SSM

Service Stream Limited

$1.3B1.0%
Kingsgate Consolidated Limited logo
KCN

Kingsgate Consolidated Limited

$1.3B1.1%
Aussie Broadband Limited logo
ABB

Aussie Broadband Limited

$1.2B6.4%
Nick Scali Limited logo
NCK

Nick Scali Limited

$1.2B7.1%
FireFly Metals Ltd logo
FFM

FireFly Metals Ltd

$1.2B2.9%
Generation Development Group Limited logo
GDG

Generation Development Group Limited

$1.2B7.5%
Karoon Energy Ltd logo
KAR

Karoon Energy Ltd

$1.2B3.1%
PEXA Group Limited logo
PXA

PEXA Group Limited

$1.2B6.5%
Centuria Capital Group logo
CNI

Centuria Capital Group

$1.1B0.7%
Silex Systems Limited logo
SLX

Silex Systems Limited

$1.0B8.0%
Nine Entertainment Co. Holdings Limited logo
NEC

Nine Entertainment Co. Holdings Limited

$1.0B5.6%
Iress Limited logo
IRE

Iress Limited

$1.0B1.9%
Arena REIT logo
ARF

Arena REIT

$1.0B4.0%
Judo Capital Holdings Limited logo
JDO

Judo Capital Holdings Limited

$1.0B2.7%
Deep Yellow Limited logo
DYL

Deep Yellow Limited

$799M9.3%
Elevra Lithium Limited logo
ELV

Elevra Lithium Limited

$778M6.5%
IperionX Limited logo
IPX

IperionX Limited

$753M12.9%
Elsight Limited logo
ELS

Elsight Limited

$750M4.0%
Weebit Nano Limited logo
WBT

Weebit Nano Limited

$699M3.3%
European Lithium Limited logo
EUR

European Lithium Limited

$653M0.1%
Vulcan Energy Resources Limited logo
VUL

Vulcan Energy Resources Limited

$562M8.1%

Rebalance Schedule

Q3 2026
Announced: 21/08/2026
18/09/2026
Q4 2026
Announced: 20/11/2026
Next
18/12/2026
Q1 2027
Announced: 19/02/2027
19/03/2027
Q2 2027
Announced: 21/05/2027
18/06/2027
Q3 2027
Announced: 20/08/2027
17/09/2027

S&P Dow Jones announces changes ~4 weeks before the effective date (third Friday of March, June, September, December).

Sector Breakdown

Materials53
Financials28
Industrials27
Real Estate20
Consumer Discretionary16
Health Care12
Energy12
Communication Services10
Information Technology10
Consumer Staples8
Utilities3

How This Works

Membership source: Downloaded daily from the BlackRock iShares IOZ ETF holdings. Any stock held by IOZ is treated as an ASX 200 member.

Buffer zone (updated Sep 2025): S&P uses a 20-position buffer. A non-member must reach rank ≤ 179 to be added; a member must fall to rank ≥ 221 before removal. This prevents excessive turnover.

Addition candidates: Non-members ranked ≤ 190 globally by market cap, within or approaching the 179 addition threshold. Rank shown in green when inside the zone.

Removal candidates: Current members ranked ≥ 185 globally, drifting toward the 221 removal threshold. Rank shown in red when approaching the danger zone.

Lookback period: S&P uses the 3-month average float-adjusted market cap (since Sep 2025), so short-term price moves matter less than sustained rank changes.

Short data: From ASIC's daily short position reports. Percentage = shares sold short as a proportion of issued capital.

Estimates use total market cap, not float-adjusted. Liquidity screens also apply. Treat as directional, not definitive.

Q4 2026 Addition EstimatesBy global rank

Stocks outside the ASX 200 ranked in the top 190 globally by market cap. S&P adds when a stock reaches rank ≤ 179 and meets liquidity screens.

RankStockMkt CapShort %
#44DPM

DPM Metals Inc.

$13.5B0.2%
#50MEZ

Meridian Energy Limited

$12.1B0.1%
#76AFI

Australian Foundation Investment Company Limited

$8.2B0.0%
#80MCY

Mercury NZ Limited

$7.8B0.0%
#81ATM

PT Antam (persero) TBK

$7.8B4.9%
#82CEN

Contact Energy Limited

$7.6B0.1%
#88ARG

Argo Investments Limited

$6.8B0.0%
#100L1G

L1 Group Limited

$5.8B0.9%

Green rank = within S&P's addition zone (≤ 179)

Q4 2026 Removal EstimatesBy global rank

Current ASX 200 members ranked below the top 185 globally. S&P removes when a stock falls to rank ≥ 221, stocks shown here are in the at-risk zone.

RankStockMkt CapShort %
#356VUL

Vulcan Energy Resources Limited

$562M8.1%
#335EUR

European Lithium Limited

$653M0.1%
#325WBT

Weebit Nano Limited

$699M3.3%
#315ELS

Elsight Limited

$750M4.0%
#314IPX

IperionX Limited

$753M12.9%
#297DYL

Deep Yellow Limited

$799M9.3%
#270JDO

Judo Capital Holdings Limited

$1.0B2.7%
#269ARF

Arena REIT

$1.0B4.0%

Red rank = approaching S&P's removal threshold (≥ 221)

What Is the S&P/ASX 200?

The S&P/ASX 200 (ticker: XJO) is Australia's primary benchmark index, maintained by S&P Dow Jones Indices. It tracks the 200 largest ASX-listed companies by float-adjusted market capitalisation, representing approximately 80% of the total market value of the Australian Securities Exchange.

The index includes companies across all GICS sectors, from the big four banks (CBA, NAB, WBC, ANZ) and mining giants (BHP, RIO) to healthcare, technology, and real estate. Membership is not simply the 200 largest stocks; S&P applies liquidity screens requiring a minimum average daily turnover relative to market cap.

How Often Does the ASX 200 Change?

The S&P/ASX 200 rebalances quarterly, with effective dates on the third Friday of March, June, September, and December each year. S&P Dow Jones Indices announces the changes approximately four weeks before the effective date, giving investors time to prepare.

Between announcements and effective dates, stocks slated for removal often see increased short selling as traders anticipate passive fund outflows. Stocks being added typically attract buying interest. This creates predictable short-selling patterns around rebalance events.

How Are Addition & Removal Candidates Identified?

S&P Dow Jones Indices uses a buffer zone to minimise unnecessary turnover. A stock outside the index must rank in the top 179 by float-adjusted market cap to be added. A current member must fall to rank 221 or lower before it is removed. This 20-position buffer (updated September 2025) means a brief dip below rank 200 does not trigger removal.

Our addition candidates show non-members ranked in the top 190, within or approaching the 179 addition zone. Our removal candidates show current members ranked 185th or lower globally, approaching the 221 removal threshold. Rankings use total market cap; S&P uses the 3-month average float-adjusted figure, so these estimates are directional only.

Short Selling & the ASX 200

Short sellers target ASX 200 stocks for various reasons: index rebalancing (shorting stocks likely to be removed before passive fund selling hits), sector rotation, and hedging long positions in index funds. Short interest data on this page comes from ASIC's daily short position reports, which reflect the total number of shares sold short as a percentage of issued capital.

Large ASX 200 stocks typically have lower short interest percentages (1–4%) due to their size and liquidity. Elevated short interest (above 5%) in an index member often signals either a structural short thesis or index rebalancing activity.

Frequently Asked Questions

How many companies are in the ASX 200 in 2026?

The S&P/ASX 200 contains exactly 200 companies at any given time. The complete list is updated on this page daily using the iShares IOZ ETF holdings published by BlackRock, which tracks the index.

When is the next ASX 200 rebalance?

The S&P/ASX 200 rebalances quarterly on the third Friday of March, June, September, and December. Changes are announced approximately four weeks before the effective date by S&P Dow Jones Indices. See the rebalance schedule on this page for exact dates.

How do I find out what stocks will be added to the ASX 200?

S&P Dow Jones Indices announces index changes approximately four weeks before each quarterly rebalance. When an announcement is made, confirmed additions and removals appear in the Confirmed Pending Changes section above. Between announcements, our Potential Additions section shows non-members currently ranked in the top 179 globally by market cap, the zone where S&P considers stocks eligible for inclusion.

Where does this ASX 200 company list come from?

We download the complete holdings of the iShares Core S&P/ASX 200 ETF (ASX: IOZ) daily from BlackRock. IOZ tracks the S&P/ASX 200 and publishes its full holdings, this is one of the most reliable publicly available sources for the current index composition.

Which sector has the most companies in the ASX 200?

Financials is typically the largest sector in the ASX 200 by number of companies and by market cap weight, driven by the big four banks (CBA, NAB, WBC, ANZ) and major insurers. Materials is the second largest, dominated by BHP and Rio Tinto.