Largest Irish companies by market cap

Companies: 41 total market cap: £914.06 B

Rank	Name	Market Cap	Price	Today	Country
1	Seagate Technology STX	£157.13 B	£691.04	0.37%	🇮🇪 Ireland
2	Eaton ETN	£129.12 B	£332.45	0.36%	🇮🇪 Ireland
3	Medtronic MDT	£87.36 B	£68.30	0.21%	🇮🇪 Ireland
4	Accenture ACN	£85.15 B	£139.15	0.45%	🇮🇪 Ireland
5	Trane Technologies TT	£73.06 B	£332.06	0.58%	🇮🇪 Ireland
6	Johnson Controls JCI	£67.06 B	£110.71	0.26%	🇮🇪 Ireland
7	Cement Roadstone Holding CRH	£42.93 B	£64.54	2.78%	🇮🇪 Ireland
8	Experian EXPGF	£24.05 B	£27.30	0.90%	🇮🇪 Ireland
9	Ingersoll Rand IR	£22.22 B	£57.29	2.87%	🇮🇪 Ireland
10	Ryanair RYAAY	£21.38 B	£41.28	1.98%	🇮🇪 Ireland
11	AIB Group (Allied Irish Banks) A5G.IR	£20.91 B	£9.99	0.00%	🇮🇪 Ireland
12	Smurfit Westrock SW	£18.62 B	£35.51	1.38%	🇮🇪 Ireland
13	AerCap AER	£17.25 B	£109.79	0.96%	🇮🇪 Ireland
14	Bank of Ireland Group BIRG.IR	£16.13 B	£17.11	0.25%	🇮🇪 Ireland
15	Steris STE	£15.41 B	£158.14	0.45%	🇮🇪 Ireland
16	Kingspan Group KRX.IR	£15.19 B	£84.39	1.26%	🇮🇪 Ireland
17	James Hardie Industries JHX	£11.94 B	£20.58	0.16%	🇮🇪 Ireland

18	Jazz Pharmaceuticals JAZZ	£11.60 B	£178.84	1.41%	🇮🇪 Ireland
19	Kerry Group KRZ.IR	£11.56 B	£72.78	0.82%	🇮🇪 Ireland
20	Flutter Entertainment FLUT	£11.28 B	£65.06	2.65%	🇮🇪 Ireland
21	Allegion ALLE	£9.93 B	£116.79	0.60%	🇮🇪 Ireland
22	ICON plc ICLR	£9.69 B	£125.62	0.31%	🇮🇪 Ireland
23	Aptiv APTV	£7.02 B	£33.81	0.52%	🇮🇪 Ireland
24	DCC plc DCC.L	£5.49 B	£64.30	0.00%	🇮🇪 Ireland
25	Alkermes ALKS	£5.35 B	£31.94	2.15%	🇮🇪 Ireland
26	Glanbia plc GL9.IR	£4.11 B	£17.02	0.85%	🇮🇪 Ireland
27	Navitas Semiconductor NVTS	£2.39 B	£9.12	2.97%	🇮🇪 Ireland
28	Grafton Group GFTU.L	£1.82 B	£9.80	0.21%	🇮🇪 Ireland
29	Perrigo PRGO	£1.47 B	£10.64	1.40%	🇮🇪 Ireland
30	Cimpress CMPR	£1.42 B	£58.55	2.27%	🇮🇪 Ireland
31	GH Research GHRS	£1.39 B	£20.37	3.03%	🇮🇪 Ireland
32	Adient ADNT	£1.07 B	£13.69	0.82%	🇮🇪 Ireland
33	Dole PLC DOLE	£0.93 B	£9.91	0.42%	🇮🇪 Ireland
34	Cosmo Pharmaceuticals C43.F	£0.91 B	£53.22	3.00%	🇮🇪 Ireland
35	ADS-TEC Energy ADSE	£0.61 B	£8.14	1.82%	🇮🇪 Ireland
36	Prothena PRTA	£0.33 B	£6.57	3.11%	🇮🇪 Ireland
37	kneat.com FOBK.F	£0.33 B	£3.44	0.00%	🇮🇪 Ireland
38	Amarin Corporation AMRN	£0.21 B	£10.29	0.80%	🇮🇪 Ireland
39	Brera Holdings SLMT	£33.78 M	£3.07	3.55%	🇮🇪 Ireland
40	Trinity Biotech TRIB	£4.5 M	£5.53	0.81%	🇮🇪 Ireland
41	Iterum Therapeutics ITRM	£1.2 M	£0.02262	0.00%	🇮🇪 Ireland

This is the list of the largest companies in Ireland by market capitalization. Only the top companies with headquarters in Ireland are shown in this list and companies that are not publicly traded are excluded. The ranking and the market cap data shown on this page are updated daily.

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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