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 — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2023-12-29$283.07$283.07286,200
2023-12-28$285.76$285.76626,700
2023-12-27$284.17$284.17169,800
2023-12-26$284.05$284.05248,900
2023-12-22$280.60$280.60684,500
2023-12-21$282.63$282.63270,500
2023-12-20$279.41$279.41408,100
2023-12-19$284.48$284.48411,600
2023-12-18$280.01$280.01291,200
2023-12-15$279.03$279.03479,000
2023-12-14$278.00$278.00914,200
2023-12-13$277.17$277.17834,500
2023-12-12$275.76$275.76291,600
2023-12-11$274.70$274.70402,400
2023-12-08$272.46$272.46726,700
2023-12-07$268.19$268.19374,200
2023-12-06$268.44$268.44402,300
2023-12-05$269.50$269.50510,200
2023-12-04$266.61$266.61475,300
2023-12-01$269.35$269.35456,100
2023-11-30$266.94$266.94721,200
2023-11-29$266.99$266.99713,200
2023-11-28$267.58$267.58353,500
2023-11-27$269.41$269.41350,500
2023-11-24$271.89$271.89183,500
2023-11-22$271.92$271.92248,800
2023-11-21$271.07$271.07567,200
2023-11-20$270.02$270.02510,700
2023-11-17$269.95$269.95286,600
2023-11-16$269.06$269.06456,500
2023-11-15$268.80$268.80665,800
2023-11-14$266.95$266.95399,600
2023-11-13$256.91$256.91260,200
2023-11-10$256.34$256.34338,400
2023-11-09$250.58$250.58538,200
2023-11-08$257.99$257.99382,900
2023-11-07$256.83$256.83435,400
2023-11-06$257.87$257.87279,500
2023-11-03$258.11$258.11372,700
2023-11-02$253.50$253.50509,300
2023-11-01$250.00$250.00604,600
2023-10-31$243.96$243.96760,600
2023-10-30$238.13$238.13623,800
2023-10-27$235.31$235.31741,400
2023-10-26$240.56$240.561,294,900
2023-10-25$225.28$225.281,098,700
2023-10-24$236.49$236.49927,400
2023-10-23$222.83$222.83627,800
2023-10-20$226.72$226.72562,900
2023-10-19$225.55$225.55497,000
2023-10-18$226.64$226.64697,200
2023-10-17$237.48$237.48528,900
2023-10-16$245.13$245.13502,500
2023-10-13$247.24$247.24442,500
2023-10-12$243.90$243.901,010,100
2023-10-11$249.25$249.25620,400
2023-10-10$242.81$242.81721,500
2023-10-09$238.55$238.55278,900
2023-10-06$239.78$239.78814,300
2023-10-05$239.68$239.68482,800
2023-10-04$240.32$240.32389,900
2023-10-03$240.42$240.42451,300
2023-10-02$243.14$243.14493,400
2023-09-29$246.25$246.25535,800
2023-09-28$247.08$247.08437,600
2023-09-27$248.07$248.07432,000
2023-09-26$246.70$246.70425,200
2023-09-25$250.41$250.41382,300
2023-09-22$250.41$250.41593,400
2023-09-21$251.87$251.87628,100
2023-09-20$261.78$261.78325,800
2023-09-19$263.26$263.26373,000
2023-09-18$263.02$263.02506,500
2023-09-15$261.71$261.71518,600
2023-09-14$261.78$261.78523,600
2023-09-13$265.10$265.10960,900
2023-09-12$257.28$257.28398,200
2023-09-11$255.46$255.46330,900
2023-09-08$250.13$250.13508,900
2023-09-07$258.12$258.12542,100
2023-09-06$256.69$256.69537,000
2023-09-05$258.65$258.65241,100
2023-09-01$262.69$262.69268,900
2023-08-31$259.94$259.94406,000
2023-08-30$265.62$265.62459,000
2023-08-29$260.23$260.23298,800
2023-08-28$255.30$255.30289,000
2023-08-25$256.32$256.32481,000
2023-08-24$252.96$252.96816,700
2023-08-23$252.75$252.75604,500
2023-08-22$250.17$250.17382,400
2023-08-21$248.83$248.83438,900
2023-08-18$250.34$250.34378,400
2023-08-17$251.99$251.99550,700
2023-08-16$256.24$256.24508,400
2023-08-15$259.09$259.09538,000
2023-08-14$259.21$259.21495,300
2023-08-11$258.39$258.39574,800
2023-08-10$256.23$256.23666,900
2023-08-09$253.62$253.62506,600
2023-08-08$255.24$255.24495,400
2023-08-07$251.57$251.57424,400
2023-08-04$253.35$253.35551,000
2023-08-03$251.05$251.05390,500
2023-08-02$251.51$251.51487,700
2023-08-01$249.23$249.23550,700
2023-07-31$251.41$251.41837,000
2023-07-28$252.14$252.14741,300
2023-07-27$241.64$241.641,533,900
2023-07-26$253.10$253.10996,900
2023-07-25$249.66$249.66800,500
2023-07-24$242.63$242.63984,600
2023-07-21$245.93$245.93708,100
2023-07-20$247.41$247.41407,600
2023-07-19$247.20$247.20866,000
2023-07-18$245.64$245.64507,600
2023-07-17$245.04$245.04482,100
2023-07-14$246.25$246.25453,200
2023-07-13$248.99$248.99626,300
2023-07-12$243.14$243.14654,000
2023-07-11$239.37$239.37807,800
2023-07-10$244.32$244.32531,300
2023-07-07$236.44$236.44435,900
2023-07-06$237.43$237.43926,300
2023-07-05$240.85$240.851,235,200
2023-07-03$243.03$243.03616,700
2023-06-30$250.20$250.20934,600
2023-06-29$242.63$242.63868,800
2023-06-28$240.26$240.261,016,100
2023-06-27$228.91$228.91559,600
2023-06-26$228.72$228.72580,300
2023-06-23$226.33$226.335,358,200
2023-06-22$227.31$227.31670,600
2023-06-21$227.48$227.48749,500
2023-06-20$230.29$230.291,208,900
2023-06-16$234.12$234.12551,100
2023-06-15$233.62$233.62595,000
2023-06-14$230.54$230.54469,200
2023-06-13$231.09$231.09348,700
2023-06-12$227.93$227.93298,500
2023-06-09$221.93$221.93457,000
2023-06-08$225.06$225.06266,400
2023-06-07$226.26$226.26753,600
2023-06-06$223.89$223.89442,500
2023-06-05$218.99$218.99443,800
2023-06-02$221.45$221.45742,800
2023-06-01$215.85$215.85608,100
2023-05-31$213.03$213.03634,400
2023-05-30$208.47$208.47668,900
2023-05-26$203.69$203.69513,000
2023-05-25$202.99$202.99712,100
2023-05-24$206.86$206.86574,700
2023-05-23$212.07$212.07608,900
2023-05-22$215.91$215.91628,700
2023-05-19$212.78$212.78683,800
2023-05-18$208.21$208.21703,400
2023-05-17$210.66$210.66956,300
2023-05-16$206.56$206.56928,900
2023-05-15$205.85$205.85998,800
2023-05-12$200.00$200.00790,100
2023-05-11$199.11$199.111,296,600
2023-05-10$191.88$191.88703,200
2023-05-09$187.16$187.16688,300
2023-05-08$189.81$189.81364,600
2023-05-05$189.79$189.79681,000
2023-05-04$183.12$183.121,052,800
2023-05-03$185.77$185.77691,300
2023-05-02$187.89$187.89586,100
2023-05-01$195.45$195.45588,800
2023-04-28$192.69$192.691,781,700
2023-04-27$190.71$190.711,564,400
2023-04-26$200.88$200.88926,000
2023-04-25$203.23$203.231,334,100
2023-04-24$206.47$206.47722,900
2023-04-21$207.13$207.13293,400
2023-04-20$206.22$206.22429,400
2023-04-19$210.55$210.55359,900
2023-04-18$212.91$212.91620,700
2023-04-17$213.97$213.97373,000
2023-04-14$209.78$209.78429,500
2023-04-13$210.30$210.30702,200
2023-04-12$208.57$208.57451,200
2023-04-11$210.45$210.45376,600
2023-04-10$208.48$208.48193,400
2023-04-06$207.54$207.54283,600
2023-04-05$208.36$208.36279,900
2023-04-04$210.84$210.84390,500
2023-04-03$214.47$214.47388,700
2023-03-31$213.59$213.59260,200
2023-03-30$210.86$210.86347,800
2023-03-29$210.58$210.58233,900
2023-03-28$207.37$207.37473,200
2023-03-27$207.89$207.89936,000
2023-03-24$206.73$206.73830,400
2023-03-23$207.85$207.85416,400
2023-03-22$208.63$208.63317,300
2023-03-21$213.32$213.32362,000
2023-03-20$208.58$208.58674,900
2023-03-17$207.75$207.75627,000
2023-03-16$213.31$213.31571,200
2023-03-15$209.52$209.52716,300
2023-03-14$215.25$215.25464,400
2023-03-13$211.79$211.79656,500
2023-03-10$213.91$213.91807,500
2023-03-09$221.60$221.60372,100
2023-03-08$228.78$228.78378,200
2023-03-07$229.45$229.45325,900
2023-03-06$235.66$235.66499,100
2023-03-03$233.88$233.88410,900
2023-03-02$230.47$230.47435,600
2023-03-01$227.50$227.50608,600
2023-02-28$225.63$225.63485,000
2023-02-27$223.13$223.13580,900
2023-02-24$223.50$223.50633,100
2023-02-23$223.12$223.12700,100
2023-02-22$221.71$221.71972,400
2023-02-21$223.35$223.35406,900
2023-02-17$227.57$227.57983,100
2023-02-16$229.90$229.90610,700
2023-02-15$235.02$235.02293,300
2023-02-14$234.12$234.12396,500
2023-02-13$237.95$237.95311,800
2023-02-10$232.27$232.27371,700
2023-02-09$234.25$234.25496,600
2023-02-08$238.80$238.80322,300
2023-02-07$241.91$241.91276,300
2023-02-06$237.74$237.74510,400
2023-02-03$244.02$244.02640,700
2023-02-02$245.33$245.33543,200
2023-02-01$235.74$235.74735,400
2023-01-31$230.71$230.71419,700
2023-01-30$223.99$223.99240,500
2023-01-27$228.24$228.24367,200
2023-01-26$231.05$231.05352,500
2023-01-25$232.26$232.26296,600
2023-01-24$231.83$231.83375,100
2023-01-23$234.87$234.87353,100
2023-01-20$231.42$231.42491,900
2023-01-19$230.28$230.28504,300
2023-01-18$227.16$227.16658,700
2023-01-17$225.45$225.45573,800
2023-01-13$224.49$224.49895,000
2023-01-12$222.66$222.66553,400
2023-01-11$224.10$224.10565,700
2023-01-10$216.83$216.83720,200
2023-01-09$201.14$201.14579,400
2023-01-06$200.45$200.45611,600
2023-01-05$199.11$199.11420,500
2023-01-04$199.35$199.35571,400
2023-01-03$193.59$193.59463,000