Largest Diagnostics & Research Companies by Market Cap

Largest Diagnostics & Research companies by market cap. The Diagnostics & Research sector has 167 publicly listed stocks with a combined market cap of $1.09 Trillion. Thermo Fisher Scientific Inc leads the sector with a market cap of $224.59 Billion. This ranking covers all Diagnostics & Research stocks globally — from large-cap industry leaders to mid-cap and small-cap companies — ranked by market capitalization and updated daily.

Total Market Cap (USD)

$1.09 Trillion

Companies Listed

167

Largest Company

Thermo Fisher Scientific …

Top Diagnostics & Research Stocks by Market Capitalization (October 2026)

Top Diagnostics & Research stocks by market capitalization as of October 2026, covering 167 publicly listed companies.

Rank Company Market Cap (USD) Market Cap (Local) Country Price 24h Change 7d Change 24h Volume
1 Thermo Fisher Scientific Inc
NYSE:TMO
$224.59 Billion $224.59 Billion USA $709.18 +0.71% +2.18% 55.74 Million
2 Danaher Corporation
NYSE:DHR
$167.39 Billion $167.39 Billion USA $236.98 +1.24% +1.33% 109.22 Million
3 Natera Inc
NASDAQ:NTRA
$56.33 Billion $56.33 Billion USA $436.00 +2.73% +5.47% 38.19 Million
4 WuXi AppTec Co Ltd
SHG:603259
$51.71 Billion CN¥353.41 Billion China CN¥142.89 +0.34% -3.03% 1.01 Billion
5 Agilent Technologies Inc
NYSE:A
$43.76 Billion $43.76 Billion USA $181.15 -0.18% +1.91% 50.96 Million
6 LONZA GROUP UNSP.ADR 1/10
F:LO3A
$41.04 Billion €35.10 Billion Germany €54.50 +0.00% -3.54% 230.00
7 IDEXX Laboratories Inc
NASDAQ:IDXX
$40.58 Billion $40.58 Billion USA $575.98 +2.32% +4.07% 12.19 Million
8 IQVIA Holdings Inc
NYSE:IQV
$39.29 Billion $39.29 Billion USA $275.06 -1.43% -0.57% 32.74 Million
9 Lonza Group AG
SW:LONN
$37.10 Billion CHF29.35 Billion Switzerland CHF640.80 +1.75% +2.76% 3.18 Million
10 Waters Corporation
NYSE:WAT
$34.91 Billion $34.91 Billion USA $480.07 +0.67% +4.94% 21.33 Million
11 Labcorp Holdings Inc.
MX:LH
$29.10 Billion MX$505.61 Billion Mexico MX$6099.00 +29.62% +24.22% 1.28K
12 Mettler-Toledo International Inc
NYSE:MTD
$28.64 Billion $28.64 Billion USA $1718.61 +1.19% +2.42% 4.57 Million
13 Quest Diagnostics Incorporated
NYSE:DGX
$26.31 Billion $26.31 Billion USA $252.92 +2.97% +5.86% 25.63 Million
14 Laboratory Corporation of America Holdings
NYSE:LH
$21.71 Billion $21.71 Billion USA $368.16 +2.20% +13.72% 17.25 Million
15 EXACT Sciences Corporation
NASDAQ:EXAS
$19.80 Billion $19.80 Billion USA $1819.87 +0.25% -2.61% 37.42 Million
16 Illumina Inc
NASDAQ:ILMN
$18.34 Billion $18.34 Billion USA $290.06 +0.44% +2.55% 57.06 Million
17 Medpace Holdings Inc
NASDAQ:MEDP
$16.36 Billion $16.36 Billion USA $677.56 -2.18% +2.28% 7.67 Million
18 ICON PLC
NASDAQ:ICLR
$13.06 Billion $13.06 Billion USA $215.48 +0.62% +16.32% 25.72 Million
19 WuXi AppTec Co. Ltd
F:WX8
$12.87 Billion €11.01 Billion Germany €21.57 -0.80% -2.16% 2.36K
20 Charles River Laboratories
NYSE:CRL
$12.77 Billion $12.77 Billion USA $376.10 +0.57% +9.06% 25.69 Million
21 Guardant Health Inc
NASDAQ:GH
$12.69 Billion $12.69 Billion USA $185.31 +1.49% +11.19% 42.09 Million
22 Revvity Inc.
NYSE:RVTY
$12.20 Billion $12.20 Billion USA $165.78 +0.27% +5.86% 42.55 Million
23 Eurofins Scientific SE
F:ESF0
$11.18 Billion €9.56 Billion Germany €59.14 +0.03% +0.92% 2.33K
24 Eurofins Scientific SE
PA:ERF
$10.22 Billion €8.74 Billion France €87.08 +0.97% +7.64% 7.79 Million
25 Biomerieux SA
PA:BIM
$8.48 Billion €7.25 Billion France €90.15 -0.93% +4.52% 4.48 Million
26 Qiagen NV
NYSE:QGEN
$7.79 Billion $7.79 Billion USA $50.34 +0.02% +0.68% 123.58 Million
27 ICON Public Limited Company
F:IJF
$7.52 Billion €6.43 Billion Germany €190.30 +6.97% +15.72% 154.00
28 Sonic Healthcare Ltd
AU:SHL
$6.67 Billion AU$9.43 Billion Australia AU$19.07 +1.06% +1.38% 34.55 Million
29 RadNet Inc
NASDAQ:RDNT
$5.80 Billion $5.80 Billion USA $73.65 +0.15% +7.66% 12.48 Million
30 Sotera Health Co
NASDAQ:SHC
$5.24 Billion $5.24 Billion USA $18.70 +0.27% +5.23% 47.19 Million
31 Hangzhou Tigermed Consulting
SHE:300347
$5.20 Billion CN¥35.56 Billion China CN¥48.19 -0.15% -5.86% 242.87 Million
32 BillionToOne, Inc. Class A Common Stock
NASDAQ:BLLN
$4.66 Billion $4.66 Billion USA $114.84 +0.74% +9.72% 12.17 Million
33 Joinn Laboratories(China)Co
SHG:603127
$4.22 Billion CN¥28.86 Billion China CN¥45.78 -2.28% -5.82% 981.79 Million
34 Dr. Lal Path Labs Ltd.
NSE:LALPATHLAB
$3.45 Billion Rs319.21 Billion India Rs1911.70 -0.55% +4.12% 6.78 Million
35 GRAIL, LLC
NASDAQ:GRAL
$3.40 Billion $3.40 Billion USA $158.92 +0.66% +19.85% 24.28 Million
36 Veracyte Inc
NASDAQ:VCYT
$3.38 Billion $3.38 Billion USA $52.17 +3.70% +12.87% 29.41 Million
37 CareDx Inc
NASDAQ:CDNA
$2.59 Billion $2.59 Billion USA $71.52 -0.85% +1.10% 32.00 Million
38 BGI Genomics Co Ltd
SHE:300676
$2.35 Billion CN¥16.06 Billion China CN¥38.39 -4.22% -6.14% 313.82 Million
39 Vimian Group AB
ST:VIMIAN
$2.31 Billion Skr21.49 Billion Sweden Skr40.85 +1.49% +7.36% 6.13 Million
40 NeoGenomics Inc
NASDAQ:NEO
$2.23 Billion $2.23 Billion USA $17.93 -0.33% +5.22% 53.34 Million
41 Fleury S.A.
SA:FLRY3
$2.21 Billion R$11.27 Billion Brazil R$20.74 -5.04% -26.24% 170.79 Million
42 GeneDx Holdings Corp.
NASDAQ:WGS
$2.12 Billion $2.12 Billion USA $71.02 +9.79% +3.02% 19.50 Million
43 Guangzhou Kingmed Diagnostics Group Co Ltd
SHG:603882
$1.94 Billion CN¥13.24 Billion China CN¥28.59 -9.55% -7.89% 347.83 Million
44 Zhejiang DiAn Diagnostics Co
SHE:300244
$1.86 Billion CN¥12.72 Billion China CN¥20.35 -5.08% -9.76% 1.06 Billion
45 Syngene International Limited
NSE:SYNGENE
$1.73 Billion Rs160.12 Billion India Rs398.60 -2.98% +5.88% 52.04 Million
46 Personalis Inc
NASDAQ:PSNL
$1.70 Billion $1.70 Billion USA $15.93 -0.47% +0.16% 52.28 Million
47 Vijaya Diagnostic Centre Limited
NSE:VIJAYA
$1.63 Billion Rs150.81 Billion India Rs1464.20 +1.48% +8.19% 2.79 Million
48 Freenome, Inc. Common stock
NASDAQ:FRNM
$1.38 Billion $1.38 Billion USA $12.86 -4.32% -8.21% 15.81 Million
49 Opko Health Inc
NASDAQ:OPK
$1.19 Billion $1.19 Billion USA $1.66 +2.47% +3.75% 116.61 Million
50 Amoy Diagnostics Co Ltd
SHE:300685
$1.13 Billion CN¥7.72 Billion China CN¥19.79 -1.64% +5.55% 286.89 Million
51 Beijing Strong Biotechnologies Inc
SHE:300406
$1.07 Billion CN¥7.33 Billion China CN¥12.50 -2.34% +4.34% 160.68 Million
52 Castle Biosciences Inc
NASDAQ:CSTL
$1.00 Billion $1.00 Billion USA $38.51 +4.99% +12.05% 8.50 Million
53 Thyrocare Technologies Limited
NSE:THYROCARE
$887.32 Million Rs82.05 Billion India Rs515.50 +4.25% +13.00% 8.62 Million
54 Shanghai Runda Med Tech Co
SHG:603108
$859.52 Million CN¥5.87 Billion China CN¥9.73 -2.99% -3.18% 421.74 Million
55 Clinica Baviera
MC:CBAV
$842.36 Million €720.51 Million Spain €53.80 +0.00% -0.74% 53.93K
56 Maccura Biotechnology Co Ltd
SHE:300463
$796.34 Million CN¥5.44 Billion China CN¥9.00 -3.23% -2.28% 111.45 Million
57 Diagnósticos da América S.A
SA:DASA3
$723.42 Million R$3.69 Billion Brazil R$2.95 -6.94% -45.37% 49.33 Million
58 Cowealth Medical China Co.Ltd.
SHG:603122
$641.31 Million CN¥4.38 Billion China CN¥11.01 -1.96% -7.40% 870.20 Million
59 HANGZHOU TIGERMED CO. H 1
F:5HZ1
$607.45 Million €519.59 Million Germany €4.22 -2.76% -7.46% 0.00
60 Shanghai Labway Clinical Laboratory Co Ltd
SHE:301060
$585.50 Million CN¥4.00 Billion China CN¥9.99 -3.94% -7.24% 440.73 Million
61 Fulgent Genetics Inc
NASDAQ:FLGT
$562.69 Million $562.69 Million USA $21.68 +0.74% +7.70% 6.54 Million
62 Guangdong Hybribio Biotech Co Ltd
SHE:300639
$551.54 Million CN¥3.77 Billion China CN¥5.83 -3.00% -4.43% 360.56 Million
63 Ningbo MedicalSystem Biotechnology Co Ltd
SHE:300439
$539.32 Million CN¥3.69 Billion China CN¥9.59 -4.48% -0.21% 107.43 Million
64 Wuhan Thalys Med Tech Co Ltd
SHG:603716
$536.90 Million CN¥3.67 Billion China CN¥16.25 +1.75% +9.87% 298.31 Million
65 JOONGANG DNM Co.Ltd
KQ:051980
$534.94 Million ₩789.36 Billion Korea ₩7120.00 -15.34% -16.24% 19.73 Million
66 Berry Genomics Co Ltd
SHE:000710
$499.21 Million CN¥3.41 Billion China CN¥9.65 -2.13% -10.15% 1.19 Billion
67 Lumibird SA
PA:LBIRD
$489.86 Million €419.00 Million France €24.90 +2.89% +6.64% 781.37K
68 Integral Diagnostics Ltd
AU:IDX
$468.37 Million AU$661.94 Million Australia AU$1.78 -14.66% -16.27% 24.97 Million
69 Voxel S.A.
WAR:VOX
$455.54 Million zł1.66 Billion Poland zł157.60 +0.51% +1.03% 168.53K
70 SMO ClinPlus Co. Ltd.
SHE:301257
$378.27 Million CN¥2.59 Billion China CN¥32.72 -3.37% -4.13% 88.11 Million
71 Australian Clinical Labs Ltd
AU:ACL
$360.33 Million AU$509.26 Million Australia AU$3.24 +2.86% +10.96% 10.99 Million
72 Chemclin Diagnostics Co. Ltd. A
SHG:688468
$344.54 Million CN¥2.35 Billion China CN¥5.87 -2.65% -3.14% 82.55 Million
73 Myriad Genetics Inc
NASDAQ:MYGN
$321.38 Million $321.38 Million USA $6.67 +0.60% +19.75% 68.92 Million
74 Metropolis Healthcare Limited
NSE:METROPOLIS
$310.46 Million Rs28.71 Billion India Rs553.85 +0.48% +3.79% 5.40 Million
75 Prenetics Global Ltd
NASDAQ:PRE
$289.40 Million $289.40 Million USA $18.98 +2.48% +13.45% 4.43 Million
76 Integrated Diagnostics Holdings PLC
LSE:IDHC
$262.18 Million $262.18 Million UK $0.45 -1.96% -9.80% 1.49 Million
77 Biodesix Inc
NASDAQ:BDSX
$260.82 Million $260.82 Million USA $24.72 +8.14% +3.30% 2.39 Million
78 Vimta Labs Limited
NSE:VIMTALABS
$251.20 Million Rs23.23 Billion India Rs519.80 +1.25% +6.39% 2.83 Million
79 Healius Ltd
AU:HLS
$249.19 Million AU$352.19 Million Australia AU$0.49 +0.00% +24.36% 89.96 Million
80 INTERGRATED DIA.H DL 025
F:8I8
$247.39 Million €211.60 Million Germany €0.36 -7.14% -8.08% 23.20K
81 Shanghai Rendu Biotechnology Co. Ltd. A
SHG:688193
$244.68 Million CN¥1.67 Billion China CN¥41.73 -4.25% -5.05% 13.88 Million
82 Prodia Widyahusada Tbk PT
JK:PRDA
$199.96 Million Rp3.41 Trillion Indonesia Rp3640.00 -2.15% +4.00% 36.61 Million
83 Monash Ivf Group Ltd
AU:MVF
$198.50 Million AU$280.54 Million Australia AU$0.72 -0.69% +1.41% 17.15 Million
84 Spectral Med Inc
TO:EDT
$194.52 Million CA$268.90 Million Canada CA$0.93 +5.68% -14.68% 1.16 Million
85 Exagen Inc
NASDAQ:XGN
$177.09 Million $177.09 Million USA $8.70 +3.57% +10.41% 8.46 Million
86 Krsnaa Diagnostics Limited
NSE:KRSNAA
$174.69 Million Rs16.15 Billion India Rs497.95 +0.30% -3.31% 1.27 Million
87 Cancer Rop Co. Ltd.
KQ:180400
$125.94 Million ₩185.83 Billion Korea ₩1888.00 -0.37% -7.90% 1.14 Million
88 Fonar Corporation
NASDAQ:FONR
$117.84 Million $117.84 Million USA $19.09 +0.00% +0.95% 2.89 Million
89 Scope Fluidics SA
WAR:SCP
$111.48 Million zł405.07 Million Poland zł148.60 -3.63% +11.56% 88.43K
90 MDxHealth SA ADR
NASDAQ:MDXH
$111.46 Million $111.46 Million USA $2.17 -4.82% -6.06% 5.64 Million
91 Insight Molecular Diagnostics Inc.
NASDAQ:IMDX
$104.06 Million $104.06 Million USA $3.18 +0.00% +5.30% 6.74 Million
92 Green Cross Lab Cell Corporation
KQ:144510
$99.29 Million ₩146.51 Billion Korea ₩9750.00 -6.88% -29.81% 1.00 Million
93 Burning Rock Biotech Ltd
NASDAQ:BNR
$97.39 Million $97.39 Million USA $11.05 -9.87% -18.21% 706.66K
94 SCOPE FLUIDICS SA ZY-10
F:S84
$94.51 Million €80.84 Million Germany €28.80 -3.84% +10.77% 0.00
95 Eurofins-Cerep SA
PA:ALECR
$91.80 Million €78.52 Million France €18400.00 +0.00% +0.00% 6.00
96 OncoCyte Corp
NASDAQ:OCX
$90.37 Million $90.37 Million USA $3.16 +0.00% +0.00% 1.44 Million
97 Bionet
TWO:1784
$85.45 Million NT$2.71 Billion Taiwan NT$52.20 -2.97% -4.57% 1.62 Million
98 Selvita S.A.
WAR:SLV
$84.14 Million zł305.74 Million Poland zł16.66 -0.83% -11.85% 1.13 Million
99 BioPorto
CO:BIOPOR
$79.40 Million Dkr507.47 Million Denmark Dkr1.03 -0.49% -0.97% 6.26 Million
100 Centro de Imagem Diagnósticos S.A
SA:AALR3
$73.53 Million R$374.71 Million Brazil R$2.46 -5.75% -16.61% 2.06 Million
101 DIVA Laboratories Ltd
TWO:4153
$57.11 Million NT$1.81 Billion Taiwan NT$30.90 +0.82% +1.81% 387.30K
102 Pangaea Oncology S.A.
MC:PANG
$51.36 Million €43.93 Million Spain €1.47 +0.00% +2.80% 31.36K
103 Access Bio Inc
KQ:950130
$45.77 Million ₩67.53 Billion Korea ₩1920.00 -2.04% -5.42% 2.88 Million
104 Optipharm.CO.LTD
KQ:153710
$43.20 Million ₩63.74 Billion Korea ₩4345.00 -0.69% +0.00% 233.30K
105 Cryosite Ltd
AU:CTE
$42.13 Million AU$59.55 Million Australia AU$1.22 +0.00% -2.79% 23.20K
106 Cytogen Inc
KQ:217330
$36.66 Million ₩54.10 Billion Korea ₩2345.00 -5.25% -12.17% 1.44 Million
107 P&K Skin Research Center Co. Ltd
KQ:347740
$35.52 Million ₩52.42 Billion Korea ₩1815.00 -0.11% +10.00% 955.97K
108 Precipio Inc
NASDAQ:PRPO
$31.34 Million $31.34 Million USA $19.35 +3.59% -8.94% 1.04 Million
109 Gencurix Inc
KQ:229000
$31.07 Million ₩45.85 Billion Korea ₩1957.00 +0.88% +4.88% 6.24 Million
110 INIFY LABORATORIES AB
F:WY60
$30.74 Million €26.29 Million Germany €0.41 -6.79% +7.85% 0.00
111 Biocartis Group NV
BR:BCART
$27.24 Million €23.30 Million Belgium €0.29 +0.00% +0.00% 0.00
112 Genoray Co. Ltd
KQ:122310
$25.44 Million ₩37.54 Billion Korea ₩3090.00 -0.80% -2.83% 150.28K
113 NanoRepro AG
XETRA:NN6
$22.45 Million €19.20 Million Germany €1.64 +3.81% -4.39% 171.61K
114 Bcal Diagnostics Ltd
AU:BDX
$20.87 Million AU$29.49 Million Australia AU$0.08 +0.00% +2.56% 3.31 Million
115 Quantum Cyber N.V.
NASDAQ:QUCY
$20.72 Million $20.72 Million USA $0.91 -5.21% -10.78% 11.44 Million
116 Diagnos Laboratorium Utama PT Tbk
JK:DGNS
$20.51 Million Rp350.00 Billion Indonesia Rp280.00 -0.71% +6.87% 64.58 Million
117 GeneMatrix Inc
KQ:109820
$19.20 Million ₩28.33 Billion Korea ₩1419.00 -0.91% -5.71% 5.83 Million
118 Enzo Biochem Inc
NYSE:ENZ
$16.44 Million $16.44 Million USA $0.54 +0.00% +0.00% 1.75K
119 SenzaGen AB
ST:SENZA
$15.21 Million Skr141.32 Million Sweden Skr4.79 +7.64% +7.64% 633.68K
120 Microba Life Sciences Ltd
AU:MAP
$15.08 Million AU$21.31 Million Australia AU$0.04 +0.00% -12.50% 7.19 Million
121 RHYTHM Biosciences Ltd
AU:RHY
$14.62 Million AU$20.66 Million Australia AU$0.06 -3.08% -5.97% 4.78 Million
122 bioAffinity Technologies, Inc.
NASDAQ:BIAF
$13.63 Million $13.63 Million USA $3.03 -3.50% -15.13% 40.15 Million
123 Inoviq Ltd
AU:IIQ
$13.45 Million AU$19.00 Million Australia AU$0.14 -1.82% +3.85% 2.37 Million
124 AroCell AB
ST:AROC
$13.39 Million Skr124.39 Million Sweden Skr0.54 +0.00% +0.00% 724.84K
125 Genetic Signatures Ltd
AU:GSS
$12.70 Million AU$17.94 Million Australia AU$0.08 +0.00% -5.95% 13.74 Million
126 NSN Co. Ltd
KQ:031860
$12.68 Million ₩18.71 Billion Korea ₩693.00 +17.26% +15.69% 50.75 Million
127 INOVIQ LTD.
F:EGQ0
$12.67 Million €10.84 Million Germany €0.08 -1.91% +4.76% 0.00
128 Malaysian Genomics Resource
KLSE:0155
$12.13 Million RM48.30 Million Malaysia RM0.32 -4.48% -4.48% 1.24 Million
129 Biomaxima
WAR:BMX
$10.96 Million zł39.83 Million Poland zł9.50 -2.06% -4.04% 43.41K
130 Mainz Biomed BV
NASDAQ:MYNZ
$9.49 Million $9.49 Million USA $0.76 -10.15% -16.66% 18.17 Million
131 Check Cap Ltd
NASDAQ:CHEK
$9.42 Million $9.42 Million USA $139.00 +0.72% -2.80% 22.52 Million
132 Check-Cap Ltd
F:7CC
$9.20 Million €7.87 Million Germany €1.73 +29.10% -11.28% 504.00
133 ENDRA Life Sciences Inc
NASDAQ:NDRA
$7.32 Million $7.32 Million USA $4.88 +2.95% +4.27% 389.16K
134 IZOTROPIC CORP.
F:1R3
$6.39 Million €5.47 Million Germany €0.08 +0.00% -9.88% 0.00
135 XWELL Inc.
NASDAQ:XWEL
$5.47 Million $5.47 Million USA $0.69 -7.96% -1.50% 1.34 Million
136 GENINCODE PLC LS -01
F:9PL
$5.28 Million €4.52 Million Germany €0.01 -7.69% +0.00% 0.00
137 Avricore Health Inc
V:AVCR
$4.57 Million CA$6.32 Million Canada CA$0.05 +11.11% -16.67% 1.66 Million
138 Leveljump Healthcare Corp
V:JUMP
$4.41 Million CA$6.10 Million Canada CA$0.06 +0.00% +0.00% 0.00
139 Advanced Biomed Inc. Common Stock
NASDAQ:ADVB
$4.36 Million $4.36 Million USA $2.64 -11.41% -29.79% 837.88K
140 Genetic Technologies Ltd
AU:GTG
$4.01 Million AU$5.67 Million Australia AU$0.04 +0.00% +0.00% 0.00
141 Applied DNA Sciences Inc
NASDAQ:APDN
$3.99 Million $3.99 Million USA $3.09 +3.00% +24.10% 1.14 Million
142 Euroespes S.A.
MC:EEP
$3.95 Million €3.38 Million Spain €0.34 +0.00% +0.00% 0.00
143 Predilife
PA:ALPRE
$3.89 Million €3.33 Million France €0.85 -7.61% +0.00% 16.94K
144 Genetic Technologies Ltd
NASDAQ:GENE
$3.71 Million $3.71 Million USA $1965.70 +0.40% -2.11% 18.23K
145 Telo Genomics Corp
V:TELO
$3.63 Million CA$5.02 Million Canada CA$0.05 +0.00% -28.57% 2.73 Million
146 StageZero Life Sciences Ltd
TO:SZLS
$3.58 Million CA$4.94 Million Canada CA$0.04 +0.00% +0.00% 0.00
147 Centogene N.V.
NASDAQ:CNTGF
$3.48 Million $3.48 Million USA $0.12 +0.00% +0.00% 126.40K
148 Immunovia publ AB
ST:IMMNOV
$3.19 Million Skr29.60 Million Sweden Skr0.04 -36.78% -42.86% 197.22 Million
149 GENETIC ANALYSIS NK -60
F:8V8
$2.36 Million €2.02 Million Germany €0.03 +0.61% -3.49% 0.00
150 iSpecimen Inc
NASDAQ:ISPC
$2.00 Million $2.00 Million USA $0.79 -9.35% -11.28% 4.53 Million

How Diagnostics & Research Companies Are Ranked by Market Cap

Diagnostics & Research companies are ranked by market cap, the latest share price multiplied by shares outstanding, with each company counted once at its primary listing.

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