Largest Irish companies by market cap

Companies: 41 total market cap: £791.02 B

Rank	Name	Market Cap	Price	Today	Country
1	Eaton ETN	£102.89 B	£265.26	1.46%	🇮🇪 Ireland
2	Accenture ACN	£93.15 B	£150.21	0.07%	🇮🇪 Ireland
3	Medtronic MDT	£85.16 B	£66.33	1.02%	🇮🇪 Ireland
4	Trane Technologies TT	£71.48 B	£322.39	0.29%	🇮🇪 Ireland
5	Seagate Technology STX	£64.46 B	£287.76	0.44%	🇮🇪 Ireland
6	Johnson Controls JCI	£61.59 B	£100.64	0.78%	🇮🇪 Ireland
7	Cement Roadstone Holding CRH	£51.92 B	£77.54	2.15%	🇮🇪 Ireland
8	Experian EXPGF	£25.70 B	£27.97	1.02%	🇮🇪 Ireland
9	Ingersoll Rand IR	£25.08 B	£63.50	1.45%	🇮🇪 Ireland
10	Ryanair RYAAY	£24.99 B	£47.67	0.08%	🇮🇪 Ireland
11	AerCap AER	£17.89 B	£105.14	0.27%	🇮🇪 Ireland
12	AIB Group (Allied Irish Banks) A5G.IR	£17.44 B	£8.17	1.56%	🇮🇪 Ireland
13	Smurfit Westrock SW	£16.49 B	£31.46	1.26%	🇮🇪 Ireland
14	Steris STE	£16.21 B	£165.18	0.24%	🇮🇪 Ireland
15	Flutter Entertainment FLUT	£14.32 B	£81.70	2.18%	🇮🇪 Ireland
16	Bank of Ireland Group BIRG.IR	£13.23 B	£13.91	0.84%	🇮🇪 Ireland
17	Kingspan Group KRX.IR	£12.11 B	£66.52	0.19%	🇮🇪 Ireland

18	Aptiv APTV	£11.32 B	£52.43	2.40%	🇮🇪 Ireland
19	Kerry Group KRZ.IR	£9.61 B	£60.01	0.64%	🇮🇪 Ireland
20	Allegion ALLE	£9.41 B	£109.33	0.60%	🇮🇪 Ireland
21	James Hardie Industries JHX	£8.90 B	£15.35	1.25%	🇮🇪 Ireland
22	Jazz Pharmaceuticals JAZZ	£8.51 B	£138.25	0.27%	🇮🇪 Ireland
23	ICON plc ICLR	£6.11 B	£78.57	1.16%	🇮🇪 Ireland
24	DCC plc DCC.L	£4.04 B	£47.32	1.13%	🇮🇪 Ireland
25	Glanbia plc GL9.IR	£3.59 B	£14.84	1.88%	🇮🇪 Ireland
26	Alkermes ALKS	£3.45 B	£20.70	0.11%	🇮🇪 Ireland
27	Navitas Semiconductor NVTS	£1.86 B	£8.08	24.88%	🇮🇪 Ireland
28	Grafton Group GFTU.L	£1.74 B	£9.05	0.08%	🇮🇪 Ireland
29	Cosmo Pharmaceuticals C43.F	£1.57 B	£93.18	0.00%	🇮🇪 Ireland
30	Cimpress CMPR	£1.29 B	£52.35	1.25%	🇮🇪 Ireland
31	Adient ADNT	£1.25 B	£15.81	0.52%	🇮🇪 Ireland
32	Dole PLC DOLE	£1.02 B	£10.81	1.76%	🇮🇪 Ireland
33	Perrigo PRGO	£1.00 B	£7.31	2.87%	🇮🇪 Ireland
34	GH Research GHRS	£0.69 B	£11.28	4.00%	🇮🇪 Ireland
35	ADS-TEC Energy ADSE	£0.47 B	£7.88	8.01%	🇮🇪 Ireland
36	Prothena PRTA	£0.38 B	£7.14	1.94%	🇮🇪 Ireland
37	Amarin Corporation AMRN	£0.25 B	£12.17	2.22%	🇮🇪 Ireland
38	kneat.com FOBK.F	£0.20 B	£2.04	0.00%	🇮🇪 Ireland
39	Brera Holdings SLMT	£60.92 M	£0.74	10.00%	🇮🇪 Ireland
40	Trinity Biotech TRIB	£10.14 M	£0.54	10.04%	🇮🇪 Ireland
41	Iterum Therapeutics ITRM	£6.79 M	£0.13	5.99%	🇮🇪 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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