Home › Countries🇮🇪 Top Companies in Ireland by Market Cap6 companies based in Ireland with a combined market cap of $595.64B.#CompanySectorMkt. CapPriceChange1EEaton Corporation plcETNIndustrials$153.11B$394.30-4.37%2PPDD Holdings Inc.PDDConsumer Cyclical$118.16B$83.01+0.59%3TTrane Technologies plcTTIndustrials$104.63B$473.31-2.33%4JJohnson Controls International plcJCIIndustrials$86.29B$141.44-2.32%5AAon plcAONFinancial Services$75.57B$353.83+2.99%6TTE Connectivity plcTELTechnology$57.89B$198.32-1.55%