Largest Irish companies by market cap

Companies: 41 total market cap: £845.22 B

Rank	Name	Market Cap	Price	Today	Country
1	Seagate Technology STX	£128.73 B	£574.11	2.11%	🇮🇪 Ireland
2	Eaton ETN	£114.36 B	£294.53	0.87%	🇮🇪 Ireland
3	Accenture ACN	£81.45 B	£132.35	0.13%	🇮🇪 Ireland
4	Trane Technologies TT	£75.59 B	£341.96	0.77%	🇮🇪 Ireland
5	Medtronic MDT	£71.71 B	£55.86	2.32%	🇮🇪 Ireland
6	Johnson Controls JCI	£62.44 B	£102.34	0.19%	🇮🇪 Ireland
7	Cement Roadstone Holding CRH	£55.76 B	£83.45	1.00%	🇮🇪 Ireland
8	Experian EXPGF	£25.64 B	£28.61	6.70%	🇮🇪 Ireland
9	Ryanair RYAAY	£22.18 B	£42.60	2.11%	🇮🇪 Ireland
10	Ingersoll Rand IR	£21.74 B	£55.57	2.26%	🇮🇪 Ireland
11	AIB Group (Allied Irish Banks) A5G.IR	£17.69 B	£8.34	1.65%	🇮🇪 Ireland
12	AerCap AER	£17.35 B	£110.03	1.02%	🇮🇪 Ireland
13	Smurfit Westrock SW	£15.98 B	£30.48	0.19%	🇮🇪 Ireland
14	Steris STE	£14.93 B	£152.17	2.92%	🇮🇪 Ireland
15	Bank of Ireland Group BIRG.IR	£13.68 B	£14.40	0.95%	🇮🇪 Ireland
16	Flutter Entertainment FLUT	£12.90 B	£74.23	0.01%	🇮🇪 Ireland
17	Kingspan Group KRX.IR	£12.18 B	£67.37	1.52%	🇮🇪 Ireland

18	Jazz Pharmaceuticals JAZZ	£10.39 B	£165.63	0.52%	🇮🇪 Ireland
19	Kerry Group KRZ.IR	£9.97 B	£62.40	0.69%	🇮🇪 Ireland
20	Aptiv APTV	£8.99 B	£42.50	1.45%	🇮🇪 Ireland
21	James Hardie Industries JHX	£8.92 B	£15.39	2.49%	🇮🇪 Ireland
22	Allegion ALLE	£8.47 B	£98.57	1.78%	🇮🇪 Ireland
23	ICON plc ICLR	£7.10 B	£91.32	0.41%	🇮🇪 Ireland
24	DCC plc DCC.L	£4.91 B	£57.49	0.09%	🇮🇪 Ireland
25	Alkermes ALKS	£4.27 B	£25.67	1.16%	🇮🇪 Ireland
26	Glanbia plc GL9.IR	£4.08 B	£16.89	0.66%	🇮🇪 Ireland
27	Navitas Semiconductor NVTS	£3.12 B	£13.35	15.26%	🇮🇪 Ireland
28	Grafton Group GFTU.L	£1.72 B	£8.70	1.90%	🇮🇪 Ireland
29	Cimpress CMPR	£1.62 B	£67.24	0.34%	🇮🇪 Ireland
30	Adient ADNT	£1.31 B	£16.71	4.21%	🇮🇪 Ireland
31	Cosmo Pharmaceuticals C43.F	£1.19 B	£69.58	3.59%	🇮🇪 Ireland
32	Perrigo PRGO	£1.18 B	£8.59	0.09%	🇮🇪 Ireland
33	GH Research GHRS	£1.07 B	£15.71	1.95%	🇮🇪 Ireland
34	Dole PLC DOLE	£1.03 B	£10.92	0.54%	🇮🇪 Ireland
35	ADS-TEC Energy ADSE	£0.49 B	£8.20	1.36%	🇮🇪 Ireland
36	Prothena PRTA	£0.42 B	£7.87	1.90%	🇮🇪 Ireland
37	kneat.com FOBK.F	£0.24 B	£2.44	3.42%	🇮🇪 Ireland
38	Amarin Corporation AMRN	£0.23 B	£11.04	1.42%	🇮🇪 Ireland
39	Brera Holdings SLMT	£39.08 M	£0.47	2.21%	🇮🇪 Ireland
40	Trinity Biotech TRIB	£9.01 M	£0.45	2.52%	🇮🇪 Ireland
41	Iterum Therapeutics ITRM	£1.17 M	£0.02201	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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