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 — 2013

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2013-12-31$40.42$40.42202,300——
2013-12-30$40.09$40.09233,000——
2013-12-27$39.80$39.80162,000——
2013-12-26$39.81$39.81120,200——
2013-12-24$39.72$39.7292,000——
2013-12-23$39.66$39.66220,200——
2013-12-20$38.93$38.93418,200——
2013-12-19$38.18$38.18817,800——
2013-12-18$38.96$38.96378,500——
2013-12-17$38.64$38.64314,200——
2013-12-16$38.86$38.86473,200——
2013-12-13$38.11$38.11219,500——
2013-12-12$38.35$38.35447,800——
2013-12-11$38.11$38.11384,800——
2013-12-10$39.00$39.00258,500——
2013-12-09$39.52$39.52394,500——
2013-12-06$39.58$39.58686,800——
2013-12-05$37.90$37.90467,200——
2013-12-04$37.25$37.25611,300——
2013-12-03$37.16$37.16290,100——
2013-12-02$37.53$37.53503,400——
2013-11-29$38.14$38.14189,900——
2013-11-27$38.20$38.20206,600——
2013-11-26$38.29$38.29628,800——
2013-11-25$37.94$37.94566,400——
2013-11-22$38.18$38.18295,000——
2013-11-21$38.75$38.75409,000——
2013-11-20$39.20$39.20265,000——
2013-11-19$38.85$38.85192,500——
2013-11-18$39.12$39.12344,000——
2013-11-15$39.98$39.98504,500——
2013-11-14$40.22$40.22451,700——
2013-11-13$40.45$40.45257,300——
2013-11-12$41.04$41.04217,100——
2013-11-11$41.13$41.13204,000——
2013-11-08$41.17$41.17350,600——
2013-11-07$40.83$40.83537,200——
2013-11-06$40.39$40.39384,100——
2013-11-05$40.31$40.31223,500——
2013-11-04$40.80$40.80323,100——
2013-11-01$40.38$40.38304,100——
2013-10-31$40.49$40.49844,500——
2013-10-30$39.94$39.941,595,700——
2013-10-29$42.90$42.90299,400——
2013-10-28$43.00$43.00240,100——
2013-10-25$43.56$43.56231,300——
2013-10-24$43.78$43.78875,400——
2013-10-23$39.65$39.65430,100——
2013-10-22$40.00$40.00293,300——
2013-10-21$40.60$40.60121,400——
2013-10-18$40.90$40.90151,300——
2013-10-17$40.75$40.75177,600——
2013-10-16$40.17$40.17134,300——
2013-10-15$39.57$39.57175,100——
2013-10-14$39.57$39.57216,400——
2013-10-11$39.61$39.61244,100——
2013-10-10$39.11$39.11553,200——
2013-10-09$38.87$38.87266,600——
2013-10-08$39.07$39.07277,200——
2013-10-07$40.29$40.29120,900——
2013-10-04$40.89$40.89177,200——
2013-10-03$40.72$40.72227,800——
2013-10-02$40.89$40.89312,100——
2013-10-01$41.11$41.11353,000——
2013-09-30$40.93$40.93495,700——
2013-09-27$40.54$40.54347,000——
2013-09-26$39.79$39.79191,600——
2013-09-25$39.48$39.48367,500——
2013-09-24$39.08$39.08353,500——
2013-09-23$39.09$39.09335,200——
2013-09-20$38.50$38.50164,600——
2013-09-19$39.00$39.00101,200——
2013-09-18$39.54$39.54146,200——
2013-09-17$40.07$40.07266,300——
2013-09-16$38.87$38.87154,200——
2013-09-13$38.51$38.51206,400——
2013-09-12$38.62$38.62527,700——
2013-09-11$38.20$38.20417,400——
2013-09-10$37.34$37.34530,000——
2013-09-09$37.06$37.06247,600——
2013-09-06$36.64$36.64457,200——
2013-09-05$36.40$36.40178,400——
2013-09-04$36.61$36.61226,400——
2013-09-03$36.68$36.68262,500——
2013-08-30$36.54$36.54227,000——
2013-08-29$37.07$37.07203,900——
2013-08-28$37.10$37.10279,100——
2013-08-27$37.58$37.58328,900——
2013-08-26$38.59$38.59214,500——
2013-08-23$38.98$38.98169,700——
2013-08-22$39.10$39.10142,300——
2013-08-21$38.59$38.59376,300——
2013-08-20$38.79$38.79299,900——
2013-08-19$38.81$38.81137,400——
2013-08-16$38.94$38.94233,100——
2013-08-15$39.18$39.18176,400——
2013-08-14$39.65$39.65281,000——
2013-08-13$40.67$40.67593,900——
2013-08-12$40.26$40.26249,800——
2013-08-09$40.10$40.10136,700——
2013-08-08$40.14$40.14253,100——
2013-08-07$40.05$40.05326,300——
2013-08-06$40.09$40.09202,000——
2013-08-05$40.15$40.15356,500——
2013-08-02$39.96$39.96330,600——
2013-08-01$39.71$39.71269,600——
2013-07-31$39.22$39.22285,100——
2013-07-30$39.20$39.20551,100——
2013-07-29$39.45$39.45264,400——
2013-07-26$39.47$39.47334,500——
2013-07-25$38.92$38.92701,400——
2013-07-24$38.02$38.02238,300——
2013-07-23$38.42$38.42417,500——
2013-07-22$37.58$37.58288,300——
2013-07-19$37.43$37.43148,500——
2013-07-18$37.61$37.61246,400——
2013-07-17$37.59$37.59223,500——
2013-07-16$37.50$37.50201,600——
2013-07-15$38.19$38.19228,500——
2013-07-12$37.93$37.93199,200——
2013-07-11$38.05$38.05223,400——
2013-07-10$37.88$37.88312,400——
2013-07-09$37.79$37.79352,700——
2013-07-08$36.93$36.93187,600——
2013-07-05$36.65$36.65132,500——
2013-07-03$36.24$36.2471,200——
2013-07-02$36.33$36.33194,900——
2013-07-01$36.38$36.38262,100——
2013-06-28$35.43$35.43185,800——
2013-06-27$35.68$35.68310,300——
2013-06-26$34.93$34.93230,300——
2013-06-25$35.20$35.20375,100——
2013-06-24$35.40$35.40201,400——
2013-06-21$35.40$35.40184,900——
2013-06-20$35.03$35.03248,400——
2013-06-19$36.00$36.00275,000——
2013-06-18$36.22$36.22816,300——
2013-06-17$35.94$35.94384,900——
2013-06-14$35.53$35.53273,900——
2013-06-13$35.52$35.52282,700——
2013-06-12$34.96$34.96600,600——
2013-06-11$34.56$34.56148,000——
2013-06-10$34.35$34.35195,400——
2013-06-07$34.10$34.10155,300——
2013-06-06$34.00$34.00106,400——
2013-06-05$33.68$33.68172,800——
2013-06-04$34.16$34.16295,300——
2013-06-03$34.49$34.49202,000——
2013-05-31$34.34$34.34106,100——
2013-05-30$34.74$34.74164,100——
2013-05-29$34.56$34.56398,200——
2013-05-28$34.84$34.84444,700——
2013-05-24$33.41$33.41130,900——
2013-05-23$33.43$33.43204,300——
2013-05-22$33.14$33.14348,500——
2013-05-21$33.36$33.36292,600——
2013-05-20$33.39$33.39242,700——
2013-05-17$33.38$33.38247,700——
2013-05-16$32.91$32.91320,200——
2013-05-15$33.44$33.44635,700——
2013-05-14$33.93$33.93360,200——
2013-05-13$33.01$33.01294,000——
2013-05-10$32.73$32.73477,100——
2013-05-09$32.25$32.25286,600——
2013-05-08$32.27$32.27331,900——
2013-05-07$32.30$32.30433,000——
2013-05-06$32.10$32.10320,900——
2013-05-03$32.47$32.47711,300——
2013-05-02$32.50$32.50566,700——
2013-05-01$32.37$32.37609,700——
2013-04-30$32.12$32.121,489,700——
2013-04-29$31.59$31.59496,800——
2013-04-26$31.45$31.45628,400——
2013-04-25$31.88$31.881,259,700——
2013-04-24$29.20$29.20383,500——
2013-04-23$29.92$29.92159,300——
2013-04-22$29.42$29.42284,400——
2013-04-19$29.63$29.63378,200——
2013-04-18$29.33$29.33454,000——
2013-04-17$29.73$29.73162,600——
2013-04-16$30.19$30.19270,700——
2013-04-15$29.99$29.99203,600——
2013-04-12$30.53$30.53317,400——
2013-04-11$30.88$30.88370,500——
2013-04-10$30.90$30.90410,600——
2013-04-09$30.60$30.60337,900——
2013-04-08$30.54$30.54121,700——
2013-04-05$30.66$30.66144,100——
2013-04-04$31.24$31.24139,100——
2013-04-03$31.25$31.25210,300——
2013-04-02$31.87$31.87222,500——
2013-04-01$30.95$30.95844,900——
2013-03-28$32.29$32.29263,900——
2013-03-27$32.50$32.50263,000——
2013-03-26$32.25$32.25200,800——
2013-03-25$32.40$32.40231,200——
2013-03-22$32.91$32.91312,300——
2013-03-21$32.71$32.71282,400——
2013-03-20$32.76$32.76366,400——
2013-03-19$32.01$32.01232,100——
2013-03-18$31.95$31.95131,900——
2013-03-15$31.96$31.96319,700——
2013-03-14$31.90$31.90507,000——
2013-03-13$31.49$31.49156,800——
2013-03-12$31.90$31.90268,100——
2013-03-11$31.74$31.74286,400——
2013-03-08$31.83$31.83138,800——
2013-03-07$31.73$31.73371,300——
2013-03-06$31.90$31.90170,100——
2013-03-05$31.99$31.99302,600——
2013-03-04$31.73$31.73282,900——
2013-03-01$31.49$31.49204,400——
2013-02-28$31.16$31.16326,400——
2013-02-27$30.76$30.76293,800——
2013-02-26$30.07$30.07373,400——
2013-02-25$30.04$30.04437,000——
2013-02-22$29.58$29.58578,100——
2013-02-21$28.97$28.97258,900——
2013-02-20$29.19$29.19818,900——
2013-02-19$28.73$28.73822,900——
2013-02-15$28.43$28.43400,200——
2013-02-14$27.96$27.96234,900——
2013-02-13$27.46$27.46307,300——
2013-02-12$27.25$27.25382,300——
2013-02-11$28.04$28.04115,400——
2013-02-08$28.08$28.08232,500——
2013-02-07$27.99$27.99117,300——
2013-02-06$28.07$28.07459,200——
2013-02-05$28.47$28.47375,600——
2013-02-04$29.03$29.03265,100——
2013-02-01$29.30$29.30196,100——
2013-01-31$29.31$29.31659,200——
2013-01-30$28.96$28.96294,000——
2013-01-29$28.64$28.64351,700——
2013-01-28$29.15$29.15348,800——
2013-01-25$29.21$29.21584,400——
2013-01-24$28.96$28.96244,600——
2013-01-23$28.73$28.73294,800——
2013-01-22$28.51$28.51428,400——
2013-01-18$28.65$28.65178,900——
2013-01-17$28.67$28.67146,000——
2013-01-16$28.64$28.64168,100——
2013-01-15$28.77$28.7780,500——
2013-01-14$28.87$28.87494,200——
2013-01-11$28.29$28.29392,600——
2013-01-10$28.65$28.65229,300——
2013-01-09$28.69$28.69312,900——
2013-01-08$28.75$28.75178,300——
2013-01-07$28.64$28.64275,800——
2013-01-04$28.82$28.82780,400——
2013-01-03$28.49$28.49299,100——
2013-01-02$28.20$28.20381,400——