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 — 2020

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2020-12-31$194.98$194.98103,300——
2020-12-30$193.66$193.66129,400——
2020-12-29$193.50$193.50119,600——
2020-12-28$191.38$191.3889,300——
2020-12-24$192.51$192.5139,400——
2020-12-23$193.11$193.11176,200——
2020-12-22$194.39$194.39213,200——
2020-12-21$193.53$193.53211,400——
2020-12-18$194.19$194.19361,300——
2020-12-17$193.60$193.60249,600——
2020-12-16$193.13$193.13212,300——
2020-12-15$196.63$196.63167,500——
2020-12-14$190.81$190.81301,800——
2020-12-11$193.30$193.30193,300——
2020-12-10$196.60$196.60231,800——
2020-12-09$196.70$196.70264,600——
2020-12-08$202.27$202.27113,000——
2020-12-07$200.74$200.74165,600——
2020-12-04$200.50$200.50158,600——
2020-12-03$199.33$199.33365,200——
2020-12-02$199.11$199.11256,400——
2020-12-01$197.44$197.44236,900——
2020-11-30$194.88$194.88170,800——
2020-11-27$191.14$191.1449,200——
2020-11-25$188.25$188.25130,400——
2020-11-24$186.37$186.37245,000——
2020-11-23$187.82$187.82179,400——
2020-11-20$189.68$189.68154,900——
2020-11-19$187.35$187.35151,500——
2020-11-18$186.26$186.26194,700——
2020-11-17$190.27$190.27125,100——
2020-11-16$193.93$193.93209,500——
2020-11-13$190.88$190.88123,100——
2020-11-12$186.81$186.81143,600——
2020-11-11$188.06$188.06321,700——
2020-11-10$187.50$187.50265,100——
2020-11-09$197.46$197.46235,100——
2020-11-06$199.32$199.32133,100——
2020-11-05$200.44$200.44196,900——
2020-11-04$195.10$195.10214,100——
2020-11-03$190.37$190.37199,000——
2020-11-02$186.33$186.33222,000——
2020-10-30$180.30$180.30202,900——
2020-10-29$183.27$183.27279,200——
2020-10-28$182.49$182.49156,700——
2020-10-27$187.63$187.63258,100——
2020-10-26$191.99$191.99199,800——
2020-10-23$194.35$194.35186,700——
2020-10-22$198.05$198.05287,400——
2020-10-21$202.23$202.23188,300——
2020-10-20$203.33$203.33130,500——
2020-10-19$204.00$204.00139,500——
2020-10-16$203.88$203.88269,600——
2020-10-15$203.82$203.82188,900——
2020-10-14$207.59$207.59208,700——
2020-10-13$211.72$211.72244,700——
2020-10-12$214.08$214.08151,700——
2020-10-09$211.97$211.97330,400——
2020-10-08$208.43$208.43204,700——
2020-10-07$206.70$206.70339,800——
2020-10-06$203.08$203.08273,600——
2020-10-05$201.68$201.68266,400——
2020-10-02$196.64$196.64317,400——
2020-10-01$196.78$196.78311,300——
2020-09-30$191.09$191.09184,600——
2020-09-29$188.71$188.71240,500——
2020-09-28$186.04$186.04156,300——
2020-09-25$183.14$183.14377,700——
2020-09-24$179.03$179.03333,200——
2020-09-23$177.80$177.80235,300——
2020-09-22$177.71$177.71226,100——
2020-09-21$177.08$177.08125,400——
2020-09-18$177.17$177.17285,200——
2020-09-17$180.59$180.59272,900——
2020-09-16$183.46$183.46230,100——
2020-09-15$188.38$188.38156,400——
2020-09-14$186.74$186.7491,400——
2020-09-11$184.54$184.54132,900——
2020-09-10$182.71$182.71188,000——
2020-09-09$180.51$180.51139,000——
2020-09-08$176.39$176.39111,600——
2020-09-04$178.00$178.00172,500——
2020-09-03$182.60$182.60141,200——
2020-09-02$187.98$187.98166,900——
2020-09-01$186.82$186.82126,600——
2020-08-31$186.41$186.41223,700——
2020-08-28$182.74$182.74286,200——
2020-08-27$184.76$184.76216,100——
2020-08-26$186.01$186.01108,400——
2020-08-25$185.32$185.32199,700——
2020-08-24$185.22$185.22112,400——
2020-08-21$186.84$186.84220,200——
2020-08-20$188.05$188.0594,100——
2020-08-19$191.25$191.25173,900——
2020-08-18$190.35$190.35134,200——
2020-08-17$189.21$189.2168,200——
2020-08-14$187.92$187.92109,600——
2020-08-13$192.13$192.13135,900——
2020-08-12$189.94$189.94146,800——
2020-08-11$187.90$187.90275,800——
2020-08-10$190.16$190.16320,200——
2020-08-07$189.91$189.91141,900——
2020-08-06$189.34$189.34128,600——
2020-08-05$189.74$189.74159,500——
2020-08-04$187.08$187.0899,700——
2020-08-03$188.48$188.48163,800——
2020-07-31$185.46$185.46107,700——
2020-07-30$185.22$185.22186,800——
2020-07-29$184.25$184.25204,200——
2020-07-28$185.66$185.66239,000——
2020-07-27$186.51$186.51288,700——
2020-07-24$185.06$185.06271,100——
2020-07-23$189.06$189.06342,600——
2020-07-22$196.10$196.10343,200——
2020-07-21$190.05$190.05258,100——
2020-07-20$190.75$190.75154,300——
2020-07-17$188.68$188.68188,200——
2020-07-16$186.42$186.42289,700——
2020-07-15$183.67$183.67268,800——
2020-07-14$179.39$179.39218,900——
2020-07-13$171.79$171.79197,100——
2020-07-10$169.96$169.96320,300——
2020-07-09$174.28$174.28286,900——
2020-07-08$171.40$171.40184,800——
2020-07-07$171.88$171.88187,200——
2020-07-06$169.47$169.47133,500——
2020-07-02$166.91$166.91175,200——
2020-07-01$167.83$167.83144,500——
2020-06-30$168.46$168.46181,000——
2020-06-29$162.49$162.49164,900——
2020-06-26$159.73$159.73196,200——
2020-06-25$162.67$162.67309,000——
2020-06-24$162.58$162.58322,000——
2020-06-23$167.59$167.59466,400——
2020-06-22$159.05$159.05145,900——
2020-06-19$161.62$161.62239,300——
2020-06-18$158.72$158.72159,700——
2020-06-17$159.28$159.28143,100——
2020-06-16$160.03$160.03268,700——
2020-06-15$159.86$159.86128,600——
2020-06-12$158.07$158.07230,100——
2020-06-11$155.66$155.66245,200——
2020-06-10$165.58$165.58315,300——
2020-06-09$159.41$159.41170,500——
2020-06-08$162.36$162.36257,500——
2020-06-05$162.62$162.62277,000——
2020-06-04$164.91$164.91319,200——
2020-06-03$169.48$169.48206,500——
2020-06-02$170.94$170.94144,700——
2020-06-01$169.74$169.74203,000——
2020-05-29$168.45$168.45217,600——
2020-05-28$165.61$165.61268,900——
2020-05-27$164.48$164.48349,300——
2020-05-26$167.70$167.70356,600——
2020-05-22$166.51$166.51416,700——
2020-05-21$164.74$164.74228,700——
2020-05-20$164.39$164.39249,700——
2020-05-19$159.24$159.24191,300——
2020-05-18$162.17$162.17151,500——
2020-05-15$157.03$157.03169,200——
2020-05-14$155.31$155.31276,200——
2020-05-13$154.73$154.73232,900——
2020-05-12$155.35$155.35230,400——
2020-05-11$161.08$161.08158,700——
2020-05-08$158.88$158.88171,500——
2020-05-07$156.04$156.04269,200——
2020-05-06$150.29$150.29313,200——
2020-05-05$151.92$151.92288,700——
2020-05-04$153.49$153.49273,000——
2020-05-01$154.15$154.15338,600——
2020-04-30$160.47$160.47396,600——
2020-04-29$162.00$162.00289,100——
2020-04-28$152.54$152.54418,000——
2020-04-27$151.02$151.02445,300——
2020-04-24$149.01$149.01336,300——
2020-04-23$148.90$148.90440,600——
2020-04-22$158.13$158.13308,800——
2020-04-21$151.86$151.86360,400——
2020-04-20$158.42$158.42263,400——
2020-04-17$159.89$159.89210,900——
2020-04-16$156.29$156.29335,000——
2020-04-15$152.79$152.79292,100——
2020-04-14$154.99$154.99284,500——
2020-04-13$150.88$150.88204,800——
2020-04-09$153.41$153.41307,900——
2020-04-08$151.20$151.20273,500——
2020-04-07$144.00$144.00321,300——
2020-04-06$145.07$145.07341,700——
2020-04-03$130.86$130.86327,900——
2020-04-02$129.79$129.79513,000——
2020-04-01$132.20$132.20389,200——
2020-03-31$136.00$136.00412,700——
2020-03-30$140.55$140.55357,300——
2020-03-27$135.04$135.04314,800——
2020-03-26$136.78$136.78579,900——
2020-03-25$127.84$127.84322,500——
2020-03-24$124.90$124.90435,800——
2020-03-23$116.26$116.26789,700——
2020-03-20$121.24$121.24816,200——
2020-03-19$115.95$115.95753,500——
2020-03-18$126.94$126.94878,100——
2020-03-17$132.40$132.40547,500——
2020-03-16$130.00$130.00625,300——
2020-03-13$151.08$151.08515,700——
2020-03-12$141.46$141.46502,600——
2020-03-11$152.54$152.54381,300——
2020-03-10$159.46$159.46409,300——
2020-03-09$153.97$153.97403,500——
2020-03-06$159.70$159.70373,900——
2020-03-05$160.41$160.41251,600——
2020-03-04$166.34$166.34229,100——
2020-03-03$159.33$159.33282,000——
2020-03-02$164.75$164.75408,700——
2020-02-28$156.06$156.06536,300——
2020-02-27$156.68$156.68309,000——
2020-02-26$159.73$159.73246,000——
2020-02-25$160.46$160.46347,400——
2020-02-24$163.57$163.57312,800——
2020-02-21$170.98$170.98242,000——
2020-02-20$172.04$172.04491,600——
2020-02-19$177.22$177.22222,200——
2020-02-18$173.69$173.69224,300——
2020-02-14$175.28$175.28126,200——
2020-02-13$175.28$175.28149,800——
2020-02-12$174.92$174.92157,100——
2020-02-11$174.41$174.41126,200——
2020-02-10$171.63$171.63219,000——
2020-02-07$168.92$168.92167,100——
2020-02-06$171.27$171.27176,900——
2020-02-05$172.92$172.92118,600——
2020-02-04$170.51$170.51116,200——
2020-02-03$168.87$168.87152,700——
2020-01-31$168.62$168.62248,100——
2020-01-30$169.47$169.47118,400——
2020-01-29$173.01$173.0184,400——
2020-01-28$172.95$172.95120,100——
2020-01-27$171.82$171.82232,900——
2020-01-24$174.95$174.95198,100——
2020-01-23$174.79$174.79123,500——
2020-01-22$175.25$175.25194,300——
2020-01-21$174.25$174.25210,100——
2020-01-17$175.78$175.78225,400——
2020-01-16$175.12$175.12303,100——
2020-01-15$171.60$171.60303,500——
2020-01-14$169.54$169.54239,400——
2020-01-13$168.68$168.68286,100——
2020-01-10$168.28$168.28190,600——
2020-01-09$167.67$167.67250,800——
2020-01-08$168.95$168.95150,200——
2020-01-07$168.87$168.87166,600——
2020-01-06$170.79$170.79361,200——
2020-01-03$168.09$168.09332,900——
2020-01-02$169.53$169.53365,700——