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 — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$21.73$21.73136,800
2009-12-30$21.99$21.99227,900
2009-12-29$22.65$22.6599,200
2009-12-28$22.96$22.96101,300
2009-12-24$22.90$22.9021,900
2009-12-23$22.96$22.96179,600
2009-12-22$22.41$22.41275,700
2009-12-21$21.97$21.97139,600
2009-12-18$21.80$21.80219,200
2009-12-17$21.73$21.73329,200
2009-12-16$21.75$21.75289,200
2009-12-15$21.60$21.60436,200
2009-12-14$21.86$21.86172,600
2009-12-11$21.60$21.60199,700
2009-12-10$21.23$21.23233,000
2009-12-09$21.25$21.25296,900
2009-12-08$21.44$21.44150,700
2009-12-07$21.97$21.97481,100
2009-12-04$22.16$22.161,651,500
2009-12-03$22.68$22.68143,700
2009-12-02$22.71$22.71326,700
2009-12-01$23.01$23.01299,200
2009-11-30$22.70$22.70225,900
2009-11-27$23.00$23.0057,200
2009-11-25$23.39$23.39216,800
2009-11-24$23.45$23.45324,600
2009-11-23$22.88$22.88236,800
2009-11-20$22.99$22.99169,100
2009-11-19$22.71$22.71594,100
2009-11-18$22.48$22.48206,800
2009-11-17$22.72$22.72204,100
2009-11-16$23.06$23.06386,300
2009-11-13$22.71$22.71206,100
2009-11-12$22.72$22.72349,100
2009-11-11$23.34$23.34242,000
2009-11-10$23.97$23.97263,800
2009-11-09$24.28$24.28269,700
2009-11-06$24.40$24.40280,600
2009-11-05$24.88$24.88304,400
2009-11-04$24.46$24.46256,700
2009-11-03$24.81$24.81190,900
2009-11-02$24.97$24.97233,000
2009-10-30$24.70$24.70150,600
2009-10-29$25.39$25.39327,800
2009-10-28$25.15$25.15352,100
2009-10-27$25.69$25.69293,700
2009-10-26$26.24$26.24344,800
2009-10-23$26.18$26.18768,800
2009-10-22$26.10$26.101,200,700
2009-10-21$24.67$24.671,562,700
2009-10-20$23.57$23.57770,000
2009-10-19$23.87$23.87692,400
2009-10-16$23.47$23.47488,100
2009-10-15$22.48$22.48328,000
2009-10-14$22.50$22.50639,200
2009-10-13$22.58$22.58376,200
2009-10-12$22.11$22.11187,700
2009-10-09$22.33$22.33611,600
2009-10-08$22.04$22.041,195,300
2009-10-07$22.68$22.68263,600
2009-10-06$23.63$23.63265,300
2009-10-05$23.14$23.14165,900
2009-10-02$23.15$23.15320,500
2009-10-01$23.47$23.47422,100
2009-09-30$24.49$24.49223,100
2009-09-29$24.52$24.52127,000
2009-09-28$24.18$24.18386,000
2009-09-25$23.77$23.77226,900
2009-09-24$23.79$23.79654,900
2009-09-23$23.97$23.97144,600
2009-09-22$23.91$23.91193,400
2009-09-21$23.82$23.82258,000
2009-09-18$23.77$23.77690,200
2009-09-17$24.68$24.68381,200
2009-09-16$24.69$24.69208,100
2009-09-15$24.17$24.17305,600
2009-09-14$24.49$24.49433,700
2009-09-11$23.46$23.46414,500
2009-09-10$23.05$23.05868,600
2009-09-09$22.09$22.09447,200
2009-09-08$22.17$22.17168,700
2009-09-04$21.83$21.83459,900
2009-09-03$22.41$22.41115,700
2009-09-02$22.50$22.50118,300
2009-09-01$22.16$22.16459,700
2009-08-31$21.62$21.62130,500
2009-08-28$21.72$21.72144,600
2009-08-27$21.99$21.99349,800
2009-08-26$22.85$22.8581,900
2009-08-25$22.76$22.76213,300
2009-08-24$23.31$23.31156,500
2009-08-21$23.05$23.05129,400
2009-08-20$22.74$22.74103,900
2009-08-19$21.93$21.93188,200
2009-08-18$21.74$21.7499,900
2009-08-17$21.76$21.76254,500
2009-08-14$22.30$22.30201,100
2009-08-13$22.77$22.77125,500
2009-08-12$22.70$22.70241,400
2009-08-11$22.80$22.80100,900
2009-08-10$23.39$23.39159,800
2009-08-07$23.16$23.16108,000
2009-08-06$22.80$22.80192,400
2009-08-05$23.28$23.28143,400
2009-08-04$24.00$24.00238,800
2009-08-03$23.90$23.90305,200
2009-07-31$23.50$23.50297,000
2009-07-30$22.86$22.86286,700
2009-07-29$22.55$22.55162,600
2009-07-28$22.06$22.06191,500
2009-07-27$21.97$21.97254,500
2009-07-24$22.10$22.10316,500
2009-07-23$21.84$21.84813,000
2009-07-22$21.51$21.512,754,900
2009-07-21$22.98$22.98380,900
2009-07-20$22.92$22.92513,400
2009-07-17$22.93$22.93207,200
2009-07-16$23.35$23.35276,500
2009-07-15$23.31$23.31735,000
2009-07-14$22.50$22.50364,800
2009-07-13$21.94$21.94261,500
2009-07-10$21.39$21.39140,100
2009-07-09$21.24$21.24189,900
2009-07-08$21.19$21.19262,000
2009-07-07$20.87$20.87441,000
2009-07-06$21.11$21.11463,000
2009-07-02$21.08$21.08157,400
2009-07-01$21.57$21.57270,800
2009-06-30$21.58$21.58200,400
2009-06-29$21.89$21.89123,600
2009-06-26$21.98$21.98409,400
2009-06-25$22.25$22.25527,500
2009-06-24$21.69$21.69385,300
2009-06-23$20.85$20.85200,300
2009-06-22$21.25$21.25285,500
2009-06-19$22.00$22.00357,600
2009-06-18$21.85$21.85790,500
2009-06-17$21.39$21.39219,200
2009-06-16$21.46$21.46586,600
2009-06-15$21.59$21.59621,200
2009-06-12$21.40$21.40241,400
2009-06-11$21.02$21.02493,700
2009-06-10$20.97$20.97709,500
2009-06-09$21.27$21.27849,800
2009-06-08$21.10$21.10392,800
2009-06-05$20.65$20.65537,400
2009-06-04$20.22$20.22492,200
2009-06-03$19.72$19.72411,000
2009-06-02$19.47$19.47444,700
2009-06-01$18.56$18.56424,600
2009-05-29$17.44$17.44260,200
2009-05-28$17.81$17.81315,200
2009-05-27$17.54$17.54614,900
2009-05-26$16.50$16.50522,800
2009-05-22$16.15$16.15329,400
2009-05-21$16.30$16.30392,900
2009-05-20$16.55$16.55589,100
2009-05-19$16.59$16.59260,900
2009-05-18$16.50$16.50224,400
2009-05-15$16.02$16.02377,300
2009-05-14$16.63$16.63476,500
2009-05-13$15.86$15.86832,400
2009-05-12$15.35$15.35760,700
2009-05-11$15.77$15.77626,100
2009-05-08$15.41$15.41387,300
2009-05-07$14.83$14.83551,400
2009-05-06$14.84$14.84528,600
2009-05-05$15.25$15.25524,400
2009-05-04$15.81$15.81302,000
2009-05-01$15.47$15.47396,500
2009-04-30$15.84$15.84923,300
2009-04-29$16.46$16.461,748,600
2009-04-28$15.63$15.632,463,000
2009-04-27$15.96$15.961,285,100
2009-04-24$15.15$15.152,538,100
2009-04-23$14.21$14.212,241,700
2009-04-22$14.20$14.204,305,300
2009-04-21$16.25$16.253,189,600
2009-04-20$18.36$18.36232,300
2009-04-17$18.31$18.31483,600
2009-04-16$17.94$17.94374,600
2009-04-15$17.79$17.79355,800
2009-04-14$17.56$17.56470,500
2009-04-13$17.77$17.77297,800
2009-04-09$17.83$17.83368,600
2009-04-08$17.35$17.35368,000
2009-04-07$17.12$17.12230,400
2009-04-06$17.30$17.30217,300
2009-04-03$17.38$17.38435,400
2009-04-02$17.71$17.711,311,100
2009-04-01$16.30$16.30283,800
2009-03-31$16.15$16.15373,800
2009-03-30$15.97$15.97367,000
2009-03-27$16.27$16.27717,900
2009-03-26$16.31$16.311,306,800
2009-03-25$15.75$15.75789,800
2009-03-24$16.28$16.28576,300
2009-03-23$17.26$17.26243,200
2009-03-20$16.83$16.83436,300
2009-03-19$16.82$16.82248,100
2009-03-18$17.16$17.16343,300
2009-03-17$17.32$17.32353,000
2009-03-16$17.14$17.14406,000
2009-03-13$17.21$17.21727,400
2009-03-12$16.38$16.38959,600
2009-03-11$15.90$15.90555,900
2009-03-10$16.78$16.781,154,000
2009-03-09$17.55$17.55635,700
2009-03-06$19.41$19.41573,700
2009-03-05$20.46$20.46303,600
2009-03-04$21.36$21.36402,100
2009-03-03$19.80$19.80556,900
2009-03-02$19.94$19.94508,700
2009-02-27$20.52$20.52625,100
2009-02-26$20.67$20.67461,900
2009-02-25$22.26$22.26360,500
2009-02-24$23.18$23.18323,800
2009-02-23$21.42$21.42538,900
2009-02-20$23.21$23.21561,900
2009-02-19$23.33$23.33392,600
2009-02-18$24.20$24.20360,700
2009-02-17$24.00$24.00476,200
2009-02-13$24.18$24.18246,700
2009-02-12$23.74$23.74360,900
2009-02-11$23.42$23.42783,900
2009-02-10$22.59$22.59291,200
2009-02-09$22.40$22.40200,300
2009-02-06$22.74$22.74217,600
2009-02-05$22.32$22.32292,100
2009-02-04$21.69$21.69389,400
2009-02-03$20.77$20.77571,200
2009-02-02$20.45$20.45410,100
2009-01-30$20.10$20.10384,300
2009-01-29$19.99$19.991,255,300
2009-01-28$18.60$18.60422,200
2009-01-27$18.37$18.37550,000
2009-01-26$19.24$19.24589,600
2009-01-23$19.61$19.611,164,500
2009-01-22$21.10$21.10216,500
2009-01-21$21.56$21.56312,100
2009-01-20$21.01$21.01279,500
2009-01-16$22.47$22.47458,000
2009-01-15$21.77$21.77276,900
2009-01-14$21.00$21.00599,000
2009-01-13$21.71$21.71870,300
2009-01-12$21.22$21.22494,900
2009-01-09$21.64$21.641,094,000
2009-01-08$20.46$20.46817,100
2009-01-07$20.51$20.51405,100
2009-01-06$20.94$20.94695,900
2009-01-05$19.58$19.58270,400
2009-01-02$19.20$19.20284,800