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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$309.70$309.70167,300
2021-12-30$309.29$309.29188,400
2021-12-29$307.99$307.99283,900
2021-12-28$306.05$306.05349,600
2021-12-27$307.62$307.62285,200
2021-12-23$307.93$307.93770,700
2021-12-22$307.43$307.43799,100
2021-12-21$286.70$286.70437,200
2021-12-20$287.12$287.12708,100
2021-12-17$287.67$287.67750,700
2021-12-16$284.36$284.36768,400
2021-12-15$287.31$287.31657,300
2021-12-14$274.79$274.79369,600
2021-12-13$277.56$277.56259,200
2021-12-10$277.10$277.10367,600
2021-12-09$273.60$273.60160,000
2021-12-08$278.40$278.40219,300
2021-12-07$278.59$278.59706,200
2021-12-06$265.94$265.94491,900
2021-12-03$272.81$272.81544,600
2021-12-02$273.05$273.05338,300
2021-12-01$272.97$272.97384,400
2021-11-30$270.47$270.47268,400
2021-11-29$276.08$276.08277,300
2021-11-26$272.00$272.00194,700
2021-11-24$273.87$273.87476,400
2021-11-23$273.97$273.97523,800
2021-11-22$281.53$281.53453,700
2021-11-19$286.20$286.20364,400
2021-11-18$283.89$283.89423,000
2021-11-17$281.40$281.40321,100
2021-11-16$285.57$285.57308,600
2021-11-15$282.14$282.14280,800
2021-11-12$285.55$285.55800,500
2021-11-11$275.18$275.18256,400
2021-11-10$273.45$273.45430,400
2021-11-09$274.16$274.16671,500
2021-11-08$268.05$268.05372,800
2021-11-05$265.96$265.96518,700
2021-11-04$280.50$280.50556,800
2021-11-03$275.60$275.60565,200
2021-11-02$282.39$282.39410,800
2021-11-01$288.91$288.91318,400
2021-10-29$286.77$286.77353,600
2021-10-28$286.43$286.43386,900
2021-10-27$281.74$281.74467,300
2021-10-26$285.14$285.14403,700
2021-10-25$283.36$283.36298,700
2021-10-22$277.52$277.52300,100
2021-10-21$277.13$277.13403,400
2021-10-20$276.33$276.33519,400
2021-10-19$277.58$277.58451,800
2021-10-18$276.57$276.57239,200
2021-10-15$275.04$275.04308,300
2021-10-14$275.07$275.07385,800
2021-10-13$270.17$270.17376,900
2021-10-12$264.75$264.75286,300
2021-10-11$264.86$264.86284,300
2021-10-08$265.26$265.26429,900
2021-10-07$265.57$265.57333,100
2021-10-06$264.08$264.08319,300
2021-10-05$262.47$262.47344,400
2021-10-04$258.11$258.11483,700
2021-10-01$262.33$262.33397,500
2021-09-30$262.02$262.02313,100
2021-09-29$267.67$267.67397,300
2021-09-28$265.47$265.47814,400
2021-09-27$271.19$271.19800,800
2021-09-24$283.04$283.04638,700
2021-09-23$281.46$281.46694,900
2021-09-22$274.39$274.39266,100
2021-09-21$269.96$269.96319,200
2021-09-20$268.73$268.73511,700
2021-09-17$268.19$268.19701,000
2021-09-16$270.74$270.74599,000
2021-09-15$263.04$263.04482,900
2021-09-14$265.32$265.32473,800
2021-09-13$256.77$256.77441,900
2021-09-10$258.81$258.81295,700
2021-09-09$258.96$258.96389,700
2021-09-08$259.84$259.84247,700
2021-09-07$261.54$261.54275,000
2021-09-03$262.36$262.36390,000
2021-09-02$261.27$261.27407,900
2021-09-01$258.22$258.22368,200
2021-08-31$255.77$255.77456,100
2021-08-30$256.16$256.16413,900
2021-08-27$253.71$253.71347,300
2021-08-26$253.00$253.00364,000
2021-08-25$251.65$251.65361,500
2021-08-24$249.27$249.27635,300
2021-08-23$244.98$244.98524,500
2021-08-20$247.81$247.81387,100
2021-08-19$246.60$246.60672,700
2021-08-18$240.59$240.59370,500
2021-08-17$241.77$241.77591,800
2021-08-16$240.42$240.42276,200
2021-08-13$239.06$239.06360,000
2021-08-12$238.80$238.80286,500
2021-08-11$236.26$236.26937,200
2021-08-10$237.06$237.06443,300
2021-08-09$240.65$240.65483,500
2021-08-06$241.74$241.74443,000
2021-08-05$243.54$243.54454,400
2021-08-04$246.07$246.07650,800
2021-08-03$244.08$244.081,925,300
2021-08-02$246.55$246.551,767,300
2021-07-30$243.27$243.271,493,700
2021-07-29$240.59$240.591,875,400
2021-07-28$230.27$230.271,760,500
2021-07-27$223.67$223.67695,100
2021-07-26$215.99$215.99853,800
2021-07-23$218.00$218.00850,600
2021-07-22$209.50$209.50855,900
2021-07-21$214.07$214.071,100,100
2021-07-20$215.88$215.88602,000
2021-07-19$216.44$216.44922,500
2021-07-16$217.29$217.29721,400
2021-07-15$214.87$214.871,176,900
2021-07-14$210.70$210.701,187,100
2021-07-13$210.01$210.01820,500
2021-07-12$208.53$208.53504,100
2021-07-09$210.50$210.50946,400
2021-07-08$209.35$209.351,752,100
2021-07-07$218.79$218.791,421,500
2021-07-06$211.73$211.732,264,100
2021-07-02$215.08$215.081,735,800
2021-07-01$215.85$215.856,622,800
2021-06-30$206.71$206.713,991,300
2021-06-29$214.04$214.041,589,700
2021-06-28$215.28$215.28933,000
2021-06-25$217.15$217.15720,000
2021-06-24$213.80$213.80995,000
2021-06-23$210.72$210.72978,100
2021-06-22$212.32$212.32878,700
2021-06-21$212.71$212.71779,600
2021-06-18$212.17$212.17624,000
2021-06-17$217.61$217.611,027,000
2021-06-16$210.56$210.56686,400
2021-06-15$214.46$214.46527,800
2021-06-14$214.82$214.82357,600
2021-06-11$216.18$216.18353,100
2021-06-10$217.80$217.80602,600
2021-06-09$220.04$220.04524,500
2021-06-08$219.58$219.58521,800
2021-06-07$219.88$219.88289,200
2021-06-04$220.48$220.48306,200
2021-06-03$220.88$220.88631,700
2021-06-02$220.60$220.60598,100
2021-06-01$222.76$222.76422,500
2021-05-28$223.76$223.76378,600
2021-05-27$223.66$223.66533,900
2021-05-26$224.15$224.15417,400
2021-05-25$229.39$229.39344,600
2021-05-24$232.20$232.20315,400
2021-05-21$231.08$231.08383,800
2021-05-20$231.02$231.02354,200
2021-05-19$226.65$226.65445,700
2021-05-18$222.37$222.37985,500
2021-05-17$225.73$225.73629,500
2021-05-14$229.20$229.20519,200
2021-05-13$227.09$227.09511,100
2021-05-12$224.27$224.27796,300
2021-05-11$225.65$225.65398,900
2021-05-10$225.39$225.39676,200
2021-05-07$228.82$228.82918,200
2021-05-06$223.12$223.12755,700
2021-05-05$221.98$221.98775,500
2021-05-04$219.44$219.44753,300
2021-05-03$213.49$213.49541,800
2021-04-30$216.95$216.95675,900
2021-04-29$216.13$216.13604,600
2021-04-28$214.89$214.89734,500
2021-04-27$215.06$215.06725,300
2021-04-26$217.88$217.88562,000
2021-04-23$217.82$217.82635,700
2021-04-22$212.51$212.51797,100
2021-04-21$210.80$210.80693,200
2021-04-20$206.36$206.36652,700
2021-04-19$203.64$203.64493,900
2021-04-16$204.47$204.47625,300
2021-04-15$205.20$205.201,220,700
2021-04-14$196.43$196.43444,100
2021-04-13$198.03$198.03508,000
2021-04-12$194.07$194.07458,300
2021-04-09$198.07$198.07348,200
2021-04-08$198.66$198.66434,800
2021-04-07$199.76$199.76530,800
2021-04-06$203.48$203.48481,000
2021-04-05$203.30$203.30600,000
2021-04-01$202.33$202.33809,100
2021-03-31$196.37$196.37804,600
2021-03-30$196.92$196.92840,400
2021-03-29$193.37$193.37810,900
2021-03-26$190.72$190.72605,500
2021-03-25$183.86$183.86449,200
2021-03-24$184.34$184.34633,200
2021-03-23$183.32$183.32683,600
2021-03-22$186.07$186.07328,100
2021-03-19$186.00$186.00667,900
2021-03-18$182.87$182.871,247,000
2021-03-17$182.15$182.15619,500
2021-03-16$181.15$181.15722,900
2021-03-15$182.07$182.07919,900
2021-03-12$182.28$182.28657,000
2021-03-11$180.69$180.69896,100
2021-03-10$177.25$177.25612,300
2021-03-09$181.08$181.08591,400
2021-03-08$180.22$180.221,262,400
2021-03-05$179.83$179.83945,200
2021-03-04$172.01$172.01912,000
2021-03-03$174.96$174.961,257,600
2021-03-02$171.87$171.871,266,700
2021-03-01$173.00$173.001,744,100
2021-02-26$180.68$180.681,527,700
2021-02-25$184.44$184.441,415,300
2021-02-24$192.41$192.413,999,300
2021-02-23$208.62$208.62178,600
2021-02-22$208.25$208.25256,500
2021-02-19$208.21$208.21126,200
2021-02-18$205.36$205.36142,800
2021-02-17$206.99$206.99138,700
2021-02-16$209.31$209.31227,700
2021-02-12$210.52$210.52220,500
2021-02-11$211.57$211.57285,300
2021-02-10$208.26$208.26343,500
2021-02-09$201.46$201.46210,400
2021-02-08$202.19$202.19189,600
2021-02-05$200.18$200.18285,200
2021-02-04$199.52$199.52243,900
2021-02-03$202.85$202.85170,600
2021-02-02$205.32$205.32175,000
2021-02-01$204.47$204.47300,200
2021-01-29$203.81$203.81246,100
2021-01-28$206.20$206.20214,900
2021-01-27$207.89$207.89386,500
2021-01-26$213.09$213.09164,800
2021-01-25$214.61$214.61183,900
2021-01-22$216.24$216.2495,800
2021-01-21$217.93$217.93130,500
2021-01-20$220.96$220.96188,100
2021-01-19$215.12$215.12232,600
2021-01-15$210.35$210.35118,400
2021-01-14$210.66$210.66149,100
2021-01-13$210.36$210.36168,100
2021-01-12$211.32$211.32296,800
2021-01-11$213.92$213.92273,100
2021-01-08$214.75$214.75266,800
2021-01-07$209.45$209.45307,100
2021-01-06$205.48$205.48285,100
2021-01-05$195.69$195.69181,400
2021-01-04$192.02$192.02240,400