NASDAQ:ICLR | Historical Stock Price | ICON PLC

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1998-05-15 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$3.03$7.85$20.34$52.72$136.64$354.141998-05-152026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2004

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2004-12-31$9.60$9.6014,400
2004-12-30$9.65$9.6577,600
2004-12-29$9.68$9.6898,000
2004-12-28$9.53$9.53126,800
2004-12-27$9.63$9.63147,200
2004-12-23$9.57$9.5750,000
2004-12-22$9.54$9.5476,400
2004-12-21$9.52$9.52168,800
2004-12-20$9.58$9.58137,600
2004-12-17$9.67$9.67175,600
2004-12-16$9.52$9.5277,600
2004-12-15$9.49$9.49129,600
2004-12-14$9.49$9.49484,000
2004-12-13$9.47$9.47148,400
2004-12-10$9.51$9.5195,600
2004-12-09$9.75$9.75190,400
2004-12-08$9.50$9.50578,000
2004-12-07$9.47$9.47506,400
2004-12-06$9.47$9.47219,200
2004-12-03$9.41$9.4184,800
2004-12-02$9.45$9.4596,800
2004-12-01$9.27$9.27128,000
2004-11-30$9.31$9.31119,600
2004-11-29$9.53$9.531,199,200
2004-11-26$9.48$9.4844,000
2004-11-24$9.49$9.49120,400
2004-11-23$9.48$9.4885,200
2004-11-22$9.35$9.35130,000
2004-11-19$9.31$9.31130,000
2004-11-18$9.31$9.31136,400
2004-11-17$9.30$9.3033,200
2004-11-16$9.38$9.3852,000
2004-11-15$9.45$9.45187,600
2004-11-12$9.53$9.53554,400
2004-11-11$9.60$9.60555,600
2004-11-10$9.85$9.85313,600
2004-11-09$9.70$9.70170,400
2004-11-08$9.75$9.75125,600
2004-11-05$9.65$9.65280,400
2004-11-04$9.37$9.37185,200
2004-11-03$8.76$8.76114,800
2004-11-02$8.75$8.75339,200
2004-11-01$8.51$8.51263,600
2004-10-29$8.26$8.26213,200
2004-10-28$7.89$7.8921,200
2004-10-27$7.86$7.8666,400
2004-10-26$7.87$7.8763,600
2004-10-25$7.77$7.77257,600
2004-10-22$7.84$7.84354,000
2004-10-21$7.98$7.98295,200
2004-10-20$7.88$7.8847,200
2004-10-19$7.93$7.93159,600
2004-10-18$8.02$8.02271,600
2004-10-15$8.00$8.00487,200
2004-10-14$8.06$8.06258,400
2004-10-13$8.00$8.00185,600
2004-10-12$8.05$8.05108,400
2004-10-11$8.07$8.07350,000
2004-10-08$7.76$7.76632,800
2004-10-07$8.10$8.10222,800
2004-10-06$8.15$8.15354,000
2004-10-05$8.39$8.39355,200
2004-10-04$8.18$8.18433,600
2004-10-01$8.38$8.3863,200
2004-09-30$8.23$8.23356,400
2004-09-29$8.18$8.18962,400
2004-09-28$8.40$8.402,577,600
2004-09-27$8.80$8.80718,000
2004-09-24$8.88$8.8820,400
2004-09-23$8.81$8.8185,200
2004-09-22$9.05$9.05160,800
2004-09-21$9.14$9.14396,000
2004-09-20$9.05$9.0584,800
2004-09-17$9.00$9.00148,000
2004-09-16$9.18$9.18172,400
2004-09-15$9.05$9.05160,400
2004-09-14$9.09$9.09287,600
2004-09-13$9.08$9.08332,400
2004-09-10$9.10$9.1081,200
2004-09-09$9.12$9.12122,800
2004-09-08$9.17$9.17869,600
2004-09-07$8.85$8.85128,800
2004-09-03$9.15$9.15104,400
2004-09-02$9.00$9.0049,200
2004-09-01$8.95$8.9534,400
2004-08-31$9.02$9.0238,400
2004-08-30$9.12$9.1260,800
2004-08-27$8.85$8.8529,600
2004-08-26$8.74$8.74182,800
2004-08-25$8.75$8.7562,000
2004-08-24$8.76$8.7642,400
2004-08-23$8.97$8.97112,400
2004-08-20$8.85$8.85113,200
2004-08-19$8.84$8.8446,400
2004-08-18$8.87$8.8768,400
2004-08-17$9.00$9.00122,400
2004-08-16$8.95$8.95240,000
2004-08-13$8.85$8.8514,400
2004-08-12$8.77$8.7777,600
2004-08-11$8.67$8.67167,200
2004-08-10$8.77$8.77433,600
2004-08-09$8.90$8.90118,400
2004-08-06$8.93$8.93312,400
2004-08-05$9.00$9.00160,400
2004-08-04$9.12$9.12131,600
2004-08-03$9.00$9.00137,600
2004-08-02$9.16$9.16222,400
2004-07-30$9.25$9.25670,800
2004-07-29$9.17$9.17385,200
2004-07-28$8.98$8.98637,200
2004-07-27$8.93$8.934,870,800
2004-07-26$11.09$11.09146,000
2004-07-23$11.08$11.0826,400
2004-07-22$11.11$11.1187,600
2004-07-21$11.12$11.1210,000
2004-07-20$11.06$11.06353,200
2004-07-19$11.32$11.32119,200
2004-07-16$11.31$11.3163,200
2004-07-15$11.25$11.25340,400
2004-07-14$11.07$11.07258,400
2004-07-13$10.97$10.9749,200
2004-07-12$10.89$10.8919,600
2004-07-09$11.14$11.1498,400
2004-07-08$10.80$10.79123,600
2004-07-07$10.82$10.82189,600
2004-07-06$10.87$10.87215,200
2004-07-02$10.88$10.88144,000
2004-07-01$11.10$11.10176,400
2004-06-30$11.07$11.0784,000
2004-06-29$10.97$10.97310,000
2004-06-28$10.88$10.8876,800
2004-06-25$10.81$10.81244,000
2004-06-24$10.75$10.7457,200
2004-06-23$10.63$10.6357,600
2004-06-22$10.50$10.5044,000
2004-06-21$10.59$10.59150,400
2004-06-18$10.43$10.4333,200
2004-06-17$10.43$10.4327,600
2004-06-16$10.47$10.4740,400
2004-06-15$10.35$10.35243,600
2004-06-14$10.35$10.35101,200
2004-06-10$10.48$10.48256,000
2004-06-09$10.64$10.64676,400
2004-06-08$10.05$10.05110,000
2004-06-07$9.75$9.75111,600
2004-06-04$9.61$9.61108,000
2004-06-03$9.74$9.7492,400
2004-06-02$9.76$9.76305,200
2004-06-01$9.65$9.6598,400
2004-05-28$9.75$9.7529,200
2004-05-27$9.72$9.7277,600
2004-05-26$9.75$9.7582,400
2004-05-25$9.50$9.50112,000
2004-05-24$9.64$9.6435,600
2004-05-21$9.56$9.56133,200
2004-05-20$9.53$9.5365,200
2004-05-19$9.51$9.5168,000
2004-05-18$9.58$9.58295,200
2004-05-17$9.50$9.5089,200
2004-05-14$9.56$9.5653,200
2004-05-13$9.68$9.68202,800
2004-05-12$9.70$9.70216,800
2004-05-11$9.98$9.98386,800
2004-05-10$10.05$10.05110,400
2004-05-07$10.25$10.24117,200
2004-05-06$10.18$10.18117,600
2004-05-05$10.50$10.50113,200
2004-05-04$10.50$10.50249,600
2004-05-03$10.24$10.24341,200
2004-04-30$9.99$9.9973,200
2004-04-29$10.06$10.06116,400
2004-04-28$10.37$10.3789,600
2004-04-27$10.45$10.4522,400
2004-04-26$10.72$10.7281,200
2004-04-23$10.57$10.5762,400
2004-04-22$10.54$10.54161,200
2004-04-21$10.51$10.51432,000
2004-04-20$10.64$10.64203,600
2004-04-19$10.72$10.7235,600
2004-04-16$10.76$10.7664,400
2004-04-15$10.75$10.75181,200
2004-04-14$10.76$10.76400,800
2004-04-13$10.75$10.75262,000
2004-04-12$10.74$10.74153,200
2004-04-08$10.41$10.41233,600
2004-04-07$10.75$10.75432,400
2004-04-06$10.77$10.77315,200
2004-04-05$10.38$10.38198,400
2004-04-02$10.42$10.42242,000
2004-04-01$10.00$10.00730,000
2004-03-31$8.86$8.86368,000
2004-03-30$8.76$8.76752,800
2004-03-29$8.94$8.94153,200
2004-03-26$8.94$8.94224,000
2004-03-25$8.93$8.93231,200
2004-03-24$8.86$8.86151,200
2004-03-23$8.87$8.87294,400
2004-03-22$8.85$8.85380,000
2004-03-19$8.94$8.94595,200
2004-03-18$9.01$9.0132,800
2004-03-17$9.05$9.05104,000
2004-03-16$9.09$9.09236,400
2004-03-15$8.75$8.75629,200
2004-03-12$8.91$8.91365,600
2004-03-11$8.77$8.77495,200
2004-03-10$8.51$8.511,347,200
2004-03-09$8.44$8.44895,600
2004-03-08$8.30$8.30251,200
2004-03-05$8.28$8.282,446,400
2004-03-04$8.25$8.25116,400
2004-03-03$8.50$8.50156,000
2004-03-02$8.57$8.5733,600
2004-03-01$8.50$8.5066,800
2004-02-27$8.32$8.32122,400
2004-02-26$8.35$8.35115,600
2004-02-25$8.37$8.37118,400
2004-02-24$8.41$8.41302,400
2004-02-23$8.59$8.59338,000
2004-02-20$8.82$8.82233,600
2004-02-19$8.98$8.98446,000
2004-02-18$8.97$8.97360,400
2004-02-17$9.27$9.27406,400
2004-02-13$9.08$9.08181,600
2004-02-12$9.25$9.25307,200
2004-02-11$9.43$9.4378,000
2004-02-10$9.42$9.42456,400
2004-02-09$9.50$9.50364,400
2004-02-06$9.45$9.45405,200
2004-02-05$9.25$9.25346,000
2004-02-04$8.88$8.88629,200
2004-02-03$8.83$8.83567,200
2004-02-02$9.15$9.15109,200
2004-01-30$9.19$9.1999,600
2004-01-29$9.19$9.1990,400
2004-01-28$9.29$9.29118,400
2004-01-27$9.36$9.36153,600
2004-01-26$9.29$9.29148,400
2004-01-23$9.45$9.45859,600
2004-01-22$9.13$9.13359,600
2004-01-21$9.32$9.32850,400
2004-01-20$9.61$9.61306,400
2004-01-16$9.55$9.55689,600
2004-01-15$10.05$10.05433,200
2004-01-14$10.25$10.25412,400
2004-01-13$10.00$10.003,406,400
2004-01-12$10.00$10.001,115,200
2004-01-09$11.40$11.40156,800
2004-01-08$11.18$11.18132,000
2004-01-07$10.93$10.9374,800
2004-01-06$10.93$10.93108,000
2004-01-05$10.91$10.91121,200
2004-01-02$10.82$10.82119,200