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 — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$182.22$182.22309,600
2025-12-30$183.00$183.00377,500
2025-12-29$182.36$182.36578,200
2025-12-26$182.84$182.84245,600
2025-12-24$183.68$183.68479,300
2025-12-23$183.07$183.07693,100
2025-12-22$179.14$179.14987,600
2025-12-19$173.77$173.771,411,900
2025-12-18$178.70$178.70803,600
2025-12-17$179.34$179.34451,400
2025-12-16$182.45$182.45548,300
2025-12-15$184.37$184.371,571,100
2025-12-12$186.58$186.58747,700
2025-12-11$189.93$189.93778,200
2025-12-10$185.86$185.86880,000
2025-12-09$181.29$181.29629,600
2025-12-08$182.10$182.101,030,600
2025-12-05$185.87$185.87905,300
2025-12-04$185.77$185.771,654,500
2025-12-03$187.78$187.781,031,200
2025-12-02$183.14$183.14912,800
2025-12-01$179.71$179.711,340,500
2025-11-28$185.00$185.00671,400
2025-11-26$183.65$183.651,628,500
2025-11-25$174.53$174.531,445,000
2025-11-24$164.55$164.55799,500
2025-11-21$164.56$164.561,336,800
2025-11-20$158.12$158.121,413,800
2025-11-19$158.81$158.811,386,600
2025-11-18$161.02$161.02612,900
2025-11-17$156.49$156.491,030,100
2025-11-14$162.18$162.18572,000
2025-11-13$163.45$163.45453,400
2025-11-12$163.42$163.42567,000
2025-11-11$163.42$163.42806,100
2025-11-10$157.68$157.68907,900
2025-11-07$159.14$159.14627,700
2025-11-06$160.00$160.00570,300
2025-11-05$163.70$163.70507,100
2025-11-04$162.96$162.96654,100
2025-11-03$168.79$168.79745,900
2025-10-31$171.82$171.82975,000
2025-10-30$165.33$165.33898,500
2025-10-29$165.95$165.951,283,600
2025-10-28$177.73$177.731,019,500
2025-10-27$182.03$182.03905,800
2025-10-24$178.11$178.111,165,400
2025-10-23$180.00$180.002,237,400
2025-10-22$192.60$192.601,844,800
2025-10-21$193.26$193.261,496,300
2025-10-20$188.45$188.451,028,700
2025-10-17$185.06$185.06778,000
2025-10-16$188.46$188.461,020,900
2025-10-15$187.85$187.85642,600
2025-10-14$185.91$185.91727,200
2025-10-13$186.05$186.05805,000
2025-10-10$183.49$183.49540,800
2025-10-09$187.71$187.71484,800
2025-10-08$186.48$186.481,169,900
2025-10-07$186.65$186.65640,400
2025-10-06$190.43$190.43653,900
2025-10-03$193.89$193.89757,000
2025-10-02$192.96$192.961,072,400
2025-10-01$192.31$192.311,797,300
2025-09-30$175.00$175.001,423,100
2025-09-29$163.44$163.44615,400
2025-09-26$163.79$163.79593,300
2025-09-25$162.53$162.531,092,200
2025-09-24$167.49$167.49716,500
2025-09-23$170.38$170.38518,600
2025-09-22$170.80$170.80767,600
2025-09-19$174.00$174.001,804,800
2025-09-18$179.43$179.43580,700
2025-09-17$175.21$175.21895,100
2025-09-16$173.13$173.131,333,900
2025-09-15$170.46$170.461,080,700
2025-09-12$175.00$175.001,597,400
2025-09-11$175.11$175.111,410,400
2025-09-10$165.44$165.441,468,700
2025-09-09$168.94$168.941,155,400
2025-09-08$177.81$177.811,168,800
2025-09-05$174.88$174.881,260,100
2025-09-04$176.36$176.362,066,700
2025-09-03$180.01$180.011,064,800
2025-09-02$177.84$177.84829,300
2025-08-29$177.94$177.94552,300
2025-08-28$175.05$175.05534,600
2025-08-27$174.00$174.00709,600
2025-08-26$171.76$171.76361,600
2025-08-25$171.75$171.75739,300
2025-08-22$175.83$175.831,166,400
2025-08-21$175.70$175.701,205,200
2025-08-20$180.25$180.25987,600
2025-08-19$179.64$179.64901,700
2025-08-18$178.56$178.56867,400
2025-08-15$175.84$175.84892,300
2025-08-14$175.36$175.361,057,400
2025-08-13$176.29$176.291,444,200
2025-08-12$169.08$169.081,274,400
2025-08-11$159.71$159.71899,900
2025-08-08$158.44$158.44871,100
2025-08-07$157.85$157.851,205,600
2025-08-06$155.42$155.421,096,900
2025-08-05$165.98$165.981,132,900
2025-08-04$164.80$164.80706,800
2025-08-01$166.44$166.441,131,200
2025-07-31$169.19$169.191,615,800
2025-07-30$181.50$181.502,560,300
2025-07-29$185.21$185.211,550,500
2025-07-28$189.66$189.661,002,400
2025-07-25$187.01$187.011,598,500
2025-07-24$195.01$195.014,523,700
2025-07-23$167.89$167.892,868,800
2025-07-22$161.50$161.504,126,000
2025-07-21$139.63$139.632,201,700
2025-07-18$143.54$143.541,599,300
2025-07-17$146.88$146.881,757,300
2025-07-16$144.04$144.041,134,100
2025-07-15$145.58$145.581,254,100
2025-07-14$149.52$149.521,240,600
2025-07-11$150.52$150.521,009,200
2025-07-10$152.07$152.071,513,900
2025-07-09$150.53$150.53865,600
2025-07-08$151.58$151.581,080,400
2025-07-07$147.59$147.591,141,600
2025-07-03$150.10$150.10486,300
2025-07-02$150.82$150.82656,200
2025-07-01$148.88$148.881,208,600
2025-06-30$145.45$145.451,167,900
2025-06-27$144.56$144.561,213,000
2025-06-26$146.75$146.751,160,100
2025-06-25$145.91$145.911,538,900
2025-06-24$148.54$148.54927,600
2025-06-23$147.30$147.301,824,000
2025-06-20$146.48$146.481,647,000
2025-06-18$143.58$143.581,131,600
2025-06-17$141.86$141.861,189,100
2025-06-16$147.04$147.04955,100
2025-06-13$145.66$145.661,284,600
2025-06-12$147.09$147.09908,400
2025-06-11$145.54$145.541,619,300
2025-06-10$144.73$144.731,011,500
2025-06-09$139.71$139.711,083,100
2025-06-06$139.11$139.11980,400
2025-06-05$134.82$134.821,262,800
2025-06-04$139.61$139.612,069,100
2025-06-03$133.76$133.76936,100
2025-06-02$128.90$128.90641,900
2025-05-30$130.28$130.28917,400
2025-05-29$131.07$131.071,251,000
2025-05-28$130.84$130.84874,200
2025-05-27$131.38$131.381,784,900
2025-05-23$127.99$127.99883,300
2025-05-22$126.99$126.99823,300
2025-05-21$126.62$126.621,493,000
2025-05-20$132.08$132.081,890,200
2025-05-19$130.75$130.751,487,000
2025-05-16$131.63$131.63870,200
2025-05-15$130.66$130.661,530,300
2025-05-14$132.23$132.231,368,700
2025-05-13$140.49$140.492,580,100
2025-05-12$140.22$140.221,723,900
2025-05-09$133.96$133.961,233,600
2025-05-08$138.48$138.483,034,500
2025-05-07$138.85$138.852,372,400
2025-05-06$135.10$135.101,943,400
2025-05-05$143.02$143.021,400,300
2025-05-02$142.96$142.962,302,100
2025-05-01$145.21$145.214,001,400
2025-04-30$151.44$151.442,767,600
2025-04-29$149.31$149.313,624,300
2025-04-28$145.00$145.001,196,200
2025-04-25$144.96$144.961,049,900
2025-04-24$145.92$145.922,595,100
2025-04-23$143.12$143.122,248,600
2025-04-22$136.79$136.794,032,900
2025-04-21$137.23$137.231,460,500
2025-04-17$139.32$139.321,759,900
2025-04-16$143.54$143.541,186,100
2025-04-15$145.17$145.17794,600
2025-04-14$146.74$146.741,287,700
2025-04-11$144.04$144.041,845,700
2025-04-10$142.64$142.641,680,700
2025-04-09$155.49$155.491,764,800
2025-04-08$142.50$142.501,735,400
2025-04-07$150.83$150.831,023,400
2025-04-04$153.72$153.721,171,100
2025-04-03$163.60$163.60942,700
2025-04-02$168.70$168.70801,300
2025-04-01$166.56$166.561,287,700
2025-03-31$174.99$174.991,689,600
2025-03-28$179.07$179.071,239,500
2025-03-27$180.11$180.111,468,500
2025-03-26$178.78$178.78554,300
2025-03-25$179.02$179.02945,800
2025-03-24$184.44$184.44536,900
2025-03-21$184.87$184.87741,400
2025-03-20$183.96$183.96472,100
2025-03-19$184.48$184.48929,000
2025-03-18$186.03$186.03788,200
2025-03-17$185.77$185.77810,500
2025-03-14$184.58$184.58785,300
2025-03-13$178.95$178.951,223,500
2025-03-12$183.39$183.391,258,400
2025-03-11$175.78$175.781,513,900
2025-03-10$182.72$182.72861,200
2025-03-07$186.56$186.561,012,300
2025-03-06$185.18$185.18807,100
2025-03-05$186.49$186.49787,900
2025-03-04$183.62$183.621,533,800
2025-03-03$184.81$184.811,000,900
2025-02-28$190.02$190.02885,900
2025-02-27$189.63$189.631,045,600
2025-02-26$196.20$196.20807,100
2025-02-25$197.50$197.50726,300
2025-02-24$199.15$199.151,120,400
2025-02-21$201.39$201.391,353,300
2025-02-20$201.84$201.841,846,000
2025-02-19$191.32$191.321,456,600
2025-02-18$188.65$188.651,482,900
2025-02-14$186.21$186.211,663,700
2025-02-13$182.64$182.641,258,100
2025-02-12$186.53$186.53761,600
2025-02-11$187.35$187.35639,700
2025-02-10$190.85$190.85938,700
2025-02-07$193.46$193.46404,600
2025-02-06$195.94$195.94543,200
2025-02-05$196.41$196.41490,300
2025-02-04$193.27$193.27766,200
2025-02-03$195.51$195.51655,300
2025-01-31$199.08$199.08494,500
2025-01-30$201.72$201.72599,200
2025-01-29$198.12$198.12815,500
2025-01-28$202.19$202.191,262,600
2025-01-27$202.26$202.26848,500
2025-01-24$200.48$200.48831,200
2025-01-23$202.68$202.681,105,700
2025-01-22$203.07$203.07586,600
2025-01-21$205.07$205.071,095,900
2025-01-17$198.11$198.111,229,600
2025-01-16$202.47$202.471,455,300
2025-01-15$199.47$199.471,878,400
2025-01-14$200.24$200.241,830,700
2025-01-13$217.99$217.99815,900
2025-01-10$218.22$218.22936,800
2025-01-08$219.34$219.341,021,800
2025-01-07$222.58$222.581,017,900
2025-01-06$215.51$215.51532,200
2025-01-03$213.28$213.28503,100
2025-01-02$212.63$212.63537,900