S&P/ASX 100 Index (ATOI) Companies by Market Cap
The S&P/ASX 100 Index (ATOI) tracks 100 constituent companies with a combined market cap of $1.83 Trillion, covering the largest publicly traded companies in Australia. This ranking lists all ATOI index holdings ordered by market capitalization — from the largest index heavyweights to smaller constituents. Updated daily with live market data.
Total Market Cap (USD)
$1.83 Trillion
Constituent Companies
100
Index Country
Australia
| Rank | Company | Weight (%) | Market Cap (USD) | Sector | Industry | Price | 24h Change |
|---|---|---|---|---|---|---|---|
| 51 |
CAR Group Ltd
AU:CAR |
% | $6.61 Billion | Communication Services | Internet Content & Information | AU$24.67 | +1.90% |
| 52 |
Sonic Healthcare Ltd
AU:SHL |
% | $6.60 Billion | Healthcare | Diagnostics & Research | AU$18.88 | -0.74% |
| 53 |
Charter Hall Group
AU:CHC |
% | $6.60 Billion | Real Estate | Real Estate - Diversified | AU$19.73 | -2.47% |
| 54 |
GPT Group
AU:GPT |
% | $6.59 Billion | Real Estate | REIT - Diversified | AU$4.86 | +0.21% |
| 55 |
ASX Ltd
AU:ASX |
% | $6.37 Billion | Financial Services | Financial Data & Stock Exchanges | AU$46.06 | -9.74% |
| 56 |
QUBE Holdings Ltd
AU:QUB |
% | $6.29 Billion | Industrials | Integrated Freight & Logistics | AU$5.02 | +0.20% |
| 57 |
Ramsay Health Care Ltd
AU:RHC |
% | $6.12 Billion | Healthcare | Medical Care Facilities | AU$37.49 | +0.35% |
| 58 |
Reece Ltd
AU:REH |
% | $5.99 Billion | Industrials | Industrial Distribution | AU$13.76 | +0.58% |
| 59 |
JB Hi-Fi Ltd
AU:JBH |
% | $5.72 Billion | Consumer Cyclical | Specialty Retail | AU$73.95 | +1.18% |
| 60 |
Ampol Ltd
AU:ALD |
% | $5.68 Billion | Energy | Oil & Gas Refining & Marketing | AU$33.68 | -0.06% |
| 61 |
Liontown Resources Ltd
AU:LTR |
% | $5.11 Billion | Basic Materials | Other Industrial Metals & Mining | AU$2.27 | -2.16% |
| 62 |
Whitehaven Coal Ltd
AU:WHC |
% | $5.10 Billion | Energy | Thermal Coal | AU$8.73 | +2.22% |
| 63 |
Atlas Arteria
AU:ALX |
% | $5.05 Billion | Industrials | Infrastructure Operations | AU$4.92 | +0.82% |
| 64 |
Aurizon Holdings Ltd
AU:AZJ |
% | $4.98 Billion | Industrials | Railroads | AU$4.18 | +0.97% |
| 65 |
IGO Ltd
AU:IGO |
% | $4.96 Billion | Basic Materials | Other Industrial Metals & Mining | AU$9.25 | -2.32% |
| 66 |
Mirvac Group
AU:MGR |
% | $4.75 Billion | Real Estate | REIT - Diversified | AU$1.70 | +0.59% |
| 67 |
Worley Ltd
AU:WOR |
% | $4.64 Billion | Energy | Oil & Gas Equipment & Services | AU$12.94 | +1.81% |
| 68 |
Dexus
AU:DXS |
% | $4.55 Billion | Real Estate | REIT - Office | AU$5.99 | -0.83% |
| 69 |
Cochlear Ltd
AU:COH |
% | $4.53 Billion | Healthcare | Medical Devices | AU$97.97 | +1.09% |
| 70 |
Challenger Ltd
AU:CGF |
% | $4.39 Billion | Financial Services | Insurance - Life | AU$8.98 | +1.47% |
| 71 |
AGL Energy Ltd
AU:AGL |
% | $4.18 Billion | Utilities | Utilities - Independent Power Producers | AU$8.78 | +0.92% |
| 72 |
Bendigo and Adelaide Bank Ltd
AU:BEN |
% | $4.15 Billion | Financial Services | Banks - Regional | AU$10.41 | +0.48% |
| 73 |
Downer Edi Ltd
AU:DOW |
% | $3.74 Billion | Industrials | Engineering & Construction | AU$7.98 | +1.66% |
| 74 |
Endeavour Group Ltd
AU:EDV |
% | $3.72 Billion | Consumer Defensive | Beverages - Wineries & Distilleries | AU$2.93 | -4.87% |
| 75 |
Cleanaway Waste Management Ltd
AU:CWY |
% | $3.68 Billion | Industrials | Waste Management | AU$2.32 | +0.87% |
| 76 |
Incitec Pivot Ltd
AU:IPL |
% | $3.48 Billion | Basic Materials | Specialty Chemicals | AU$2.64 | +0.00% |
| 77 |
Steadfast Group Ltd
AU:SDF |
% | $3.28 Billion | Financial Services | Insurance Brokers | AU$4.17 | +1.96% |
| 78 |
Seek Ltd
AU:SEK |
% | $3.11 Billion | Communication Services | Internet Content & Information | AU$12.30 | +2.07% |
| 79 |
Bank of Queensland Ltd
AU:BOQ |
% | $2.92 Billion | Financial Services | Banks - Regional | AU$6.27 | +0.00% |
| 80 |
The a2 Milk Company Ltd
AU:A2M |
% | $2.87 Billion | Consumer Defensive | Packaged Foods | AU$5.59 | +0.54% |
| 81 |
AMP Ltd
AU:AMP |
% | $2.87 Billion | Financial Services | Financial Conglomerates | AU$1.60 | +0.63% |
| 82 |
Ansell Ltd
AU:ANN |
% | $2.73 Billion | Healthcare | Medical Instruments & Supplies | AU$27.21 | +1.64% |
| 83 |
Treasury Wine Estates Ltd
AU:TWE |
% | $2.50 Billion | Consumer Defensive | Beverages - Wineries & Distilleries | AU$4.38 | -1.13% |
| 84 |
Metcash Ltd
AU:MTS |
% | $2.40 Billion | Consumer Defensive | Food Distribution | AU$3.09 | +1.31% |
| 85 |
NIB Holdings Ltd
AU:NHF |
% | $2.38 Billion | Financial Services | Insurance - Specialty | AU$6.87 | +1.33% |
| 86 |
Iluka Resources Ltd
AU:ILU |
% | $2.36 Billion | Basic Materials | Other Industrial Metals & Mining | AU$7.96 | -0.13% |
| 87 |
Flight Centre Travel Group Ltd
AU:FLT |
% | $1.44 Billion | Consumer Cyclical | Travel Services | AU$9.88 | -0.40% |
| 88 |
Lendlease Group
AU:LLC |
% | $1.37 Billion | Real Estate | Real Estate - Diversified | AU$2.81 | +1.08% |
| 89 |
Dominos PIZZA Enterprises Ltd
AU:DMP |
% | $1.19 Billion | Consumer Cyclical | Restaurants | AU$17.82 | +1.37% |
| 90 |
Orora Ltd
AU:ORA |
% | $1.14 Billion | Consumer Cyclical | Packaging & Containers | AU$1.30 | -1.14% |
| 91 |
Nine Entertainment Co. Holdings Ltd
AU:NEC |
% | $1.05 Billion | Communication Services | Entertainment | AU$0.94 | +0.00% |
| 92 |
Idp Education Ltd
AU:IEL |
% | $521.89 Million | Consumer Defensive | Education & Training Services | AU$2.65 | -3.99% |
| 93 |
Altium Ltd
AU:ALU
|
% | - | Technology | Software - Application | - | - |
| 94 |
Resmed Inc DRC
AU:RMD
|
% | - | Healthcare | Medical Instruments & Supplies | - | - |
| 95 |
Fisher & Paykel Healthcare Corporation Limited
AU:FPH
|
% | - | Healthcare | Medical Instruments & Supplies | - | - |
| 96 |
Reliance Worldwide Corporation Ltd
AU:RWC
|
% | - | Industrials | Building Products & Equipment | - | - |
| 97 |
Virgin Money PLC
AU:VUK
|
% | - | Financial Services | Banks - Regional | - | - |
| 98 |
Block Inc
AU:SQ2
|
% | - | Technology | Software - Infrastructure | - | - |
| 99 |
Arcadium Lithium plc
AU:LTM
|
% | - | N/A | N/A | - | - |
| 100 |
SEVEN GROUP HOLDINGS LTD
AU:SVW
|
% | - | Industrials | Conglomerates | - | - |
Complete list of all companies in the ATOI index ranked by market capitalization. Track index constituent performance and market values. View all indices