Largest Irish companies by market cap

Companies: 41 total market cap: £877.85 B

Rank	Name	Market Cap	Price	Today	Country
1	Seagate Technology STX	£152.05 B	£678.13	1.82%	🇮🇪 Ireland
2	Eaton ETN	£117.99 B	£303.86	0.98%	🇮🇪 Ireland
3	Medtronic MDT	£78.27 B	£61.15	0.56%	🇮🇪 Ireland
4	Trane Technologies TT	£78.17 B	£353.67	0.79%	🇮🇪 Ireland
5	Johnson Controls JCI	£64.91 B	£106.41	0.55%	🇮🇪 Ireland
6	Accenture ACN	£64.01 B	£104.61	0.55%	🇮🇪 Ireland
7	Cement Roadstone Holding CRH	£49.92 B	£74.72	0.32%	🇮🇪 Ireland
8	Experian EXPGF	£24.43 B	£27.63	0.00%	🇮🇪 Ireland
9	Ingersoll Rand IR	£24.41 B	£62.38	3.26%	🇮🇪 Ireland
10	Ryanair RYAAY	£22.64 B	£43.62	0.66%	🇮🇪 Ireland
11	AIB Group (Allied Irish Banks) A5G.IR	£19.75 B	£9.31	0.46%	🇮🇪 Ireland
12	AerCap AER	£17.73 B	£112.47	0.77%	🇮🇪 Ireland
13	Smurfit Westrock SW	£17.43 B	£33.24	3.37%	🇮🇪 Ireland
14	Steris STE	£15.32 B	£157.25	0.56%	🇮🇪 Ireland
15	Bank of Ireland Group BIRG.IR	£15.03 B	£15.82	1.12%	🇮🇪 Ireland
16	Flutter Entertainment FLUT	£12.92 B	£74.53	1.14%	🇮🇪 Ireland
17	Jazz Pharmaceuticals JAZZ	£11.73 B	£187.00	1.50%	🇮🇪 Ireland

18	Kingspan Group KRX.IR	£11.67 B	£64.86	0.59%	🇮🇪 Ireland
19	Kerry Group KRZ.IR	£10.93 B	£68.40	2.55%	🇮🇪 Ireland
20	James Hardie Industries JHX	£10.73 B	£18.50	0.48%	🇮🇪 Ireland
21	ICON plc ICLR	£9.63 B	£124.92	0.40%	🇮🇪 Ireland
22	Aptiv APTV	£9.20 B	£43.48	0.54%	🇮🇪 Ireland
23	Allegion ALLE	£8.98 B	£104.51	1.93%	🇮🇪 Ireland
24	Alkermes ALKS	£6.54 B	£39.26	0.51%	🇮🇪 Ireland
25	DCC plc DCC.L	£5.37 B	£62.95	0.00%	🇮🇪 Ireland
26	Glanbia plc GL9.IR	£4.63 B	£19.16	0.97%	🇮🇪 Ireland
27	Navitas Semiconductor NVTS	£2.30 B	£9.46	1.21%	🇮🇪 Ireland
28	Grafton Group GFTU.L	£1.88 B	£9.52	0.32%	🇮🇪 Ireland
29	Cimpress CMPR	£1.77 B	£73.26	2.36%	🇮🇪 Ireland
30	GH Research GHRS	£1.46 B	£21.34	0.81%	🇮🇪 Ireland
31	Adient ADNT	£1.20 B	£15.42	3.66%	🇮🇪 Ireland
32	Perrigo PRGO	£1.08 B	£7.82	0.00%	🇮🇪 Ireland
33	Dole PLC DOLE	£1.01 B	£10.68	2.36%	🇮🇪 Ireland
34	Cosmo Pharmaceuticals C43.F	£1.00 B	£58.41	0.29%	🇮🇪 Ireland
35	ADS-TEC Energy ADSE	£0.67 B	£8.96	0.74%	🇮🇪 Ireland
36	Prothena PRTA	£0.32 B	£6.30	3.54%	🇮🇪 Ireland
37	kneat.com FOBK.F	£0.32 B	£3.40	0.00%	🇮🇪 Ireland
38	Amarin Corporation AMRN	£0.21 B	£10.24	1.58%	🇮🇪 Ireland
39	Brera Holdings SLMT	£41.51 M	£3.77	0.98%	🇮🇪 Ireland
40	Trinity Biotech TRIB	£4.58 M	£0.23	15.44%	🇮🇪 Ireland
41	Iterum Therapeutics ITRM	£1.19 M	£0.02240	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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