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 — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$77.70$77.70291,800
2015-12-30$78.14$78.14324,700
2015-12-29$78.07$78.07300,700
2015-12-28$76.69$76.69397,100
2015-12-24$76.27$76.2782,900
2015-12-23$75.15$75.15271,900
2015-12-22$74.79$74.79285,900
2015-12-21$75.05$75.05304,100
2015-12-18$75.62$75.62447,900
2015-12-17$75.41$75.41783,300
2015-12-16$76.45$76.45508,900
2015-12-15$75.28$75.28410,700
2015-12-14$73.74$73.74451,300
2015-12-11$73.51$73.51463,600
2015-12-10$73.80$73.80417,600
2015-12-09$73.65$73.65403,700
2015-12-08$74.68$74.68466,400
2015-12-07$74.06$74.06484,200
2015-12-04$73.72$73.72325,300
2015-12-03$72.89$72.89436,000
2015-12-02$74.47$74.47494,000
2015-12-01$74.85$74.85407,200
2015-11-30$74.33$74.33539,700
2015-11-27$75.01$75.01179,200
2015-11-25$74.03$74.03469,600
2015-11-24$73.38$73.38637,000
2015-11-23$71.65$71.65864,900
2015-11-20$69.48$69.48703,100
2015-11-19$68.11$68.11447,500
2015-11-18$68.32$68.32260,600
2015-11-17$67.95$67.95304,400
2015-11-16$66.30$66.30594,200
2015-11-13$65.59$65.59405,600
2015-11-12$66.45$66.45254,400
2015-11-11$67.88$67.88243,500
2015-11-10$69.20$69.20344,800
2015-11-09$69.51$69.51484,100
2015-11-06$68.10$68.10336,200
2015-11-05$67.82$67.82609,900
2015-11-04$68.83$68.83419,200
2015-11-03$68.07$68.07424,700
2015-11-02$67.68$67.681,121,200
2015-10-30$63.87$63.87497,400
2015-10-29$65.03$65.03612,200
2015-10-28$67.09$67.09636,800
2015-10-27$64.44$64.441,978,700
2015-10-26$70.38$70.38756,800
2015-10-23$68.33$68.33744,100
2015-10-22$67.59$67.59719,400
2015-10-21$71.48$71.48416,500
2015-10-20$71.52$71.52318,500
2015-10-19$72.87$72.87273,400
2015-10-16$72.37$72.37339,700
2015-10-15$71.42$71.42351,800
2015-10-14$69.89$69.89353,800
2015-10-13$69.55$69.55416,400
2015-10-12$70.78$70.78374,500
2015-10-09$70.14$70.14597,800
2015-10-08$69.15$69.15526,400
2015-10-07$69.71$69.71563,700
2015-10-06$67.86$67.86750,400
2015-10-05$71.00$71.00476,900
2015-10-02$72.25$72.25417,800
2015-10-01$72.11$72.11431,300
2015-09-30$70.97$70.97722,600
2015-09-29$70.39$70.39693,300
2015-09-28$69.07$69.07963,200
2015-09-25$74.19$74.19410,500
2015-09-24$75.77$75.77335,000
2015-09-23$77.43$77.43303,500
2015-09-22$77.74$77.74547,100
2015-09-21$80.09$80.09775,800
2015-09-18$79.98$79.98488,600
2015-09-17$81.40$81.40421,200
2015-09-16$79.75$79.75372,500
2015-09-15$78.23$78.23416,000
2015-09-14$77.93$77.93357,300
2015-09-11$78.01$78.01449,100
2015-09-10$77.26$77.26525,000
2015-09-09$77.62$77.62497,700
2015-09-08$78.57$78.57584,100
2015-09-04$75.90$75.90361,300
2015-09-03$75.78$75.78672,200
2015-09-02$76.20$76.20460,100
2015-09-01$75.07$75.07537,400
2015-08-31$77.00$77.00625,700
2015-08-28$77.99$77.99470,100
2015-08-27$78.75$78.75673,200
2015-08-26$78.95$78.95807,600
2015-08-25$75.67$75.67806,600
2015-08-24$74.27$74.27865,700
2015-08-21$77.17$77.17665,000
2015-08-20$78.25$78.25653,200
2015-08-19$80.26$80.26793,100
2015-08-18$80.73$80.731,008,200
2015-08-17$80.57$80.572,151,000
2015-08-14$82.31$82.31463,300
2015-08-13$82.52$82.52585,700
2015-08-12$82.69$82.69655,200
2015-08-11$82.58$82.58482,300
2015-08-10$83.28$83.28554,600
2015-08-07$81.76$81.76436,900
2015-08-06$81.17$81.17587,500
2015-08-05$82.57$82.57583,800
2015-08-04$81.22$81.22422,500
2015-08-03$81.48$81.48653,100
2015-07-31$80.80$80.80699,100
2015-07-30$80.86$80.861,086,300
2015-07-29$78.58$78.581,028,900
2015-07-28$75.20$75.202,767,800
2015-07-27$64.95$64.95905,900
2015-07-24$66.74$66.74401,300
2015-07-23$67.90$67.90303,400
2015-07-22$68.12$68.12374,600
2015-07-21$68.17$68.17397,500
2015-07-20$68.87$68.87330,100
2015-07-17$68.12$68.12356,200
2015-07-16$68.23$68.23405,800
2015-07-15$68.96$68.96699,400
2015-07-14$68.94$68.94320,900
2015-07-13$68.23$68.23344,200
2015-07-10$66.20$66.20407,900
2015-07-09$64.54$64.54451,400
2015-07-08$65.09$65.09377,000
2015-07-07$67.13$67.13484,700
2015-07-06$67.60$67.60440,900
2015-07-02$67.40$67.40313,000
2015-07-01$67.84$67.84381,900
2015-06-30$67.30$67.30360,500
2015-06-29$66.15$66.15313,000
2015-06-26$68.14$68.14279,200
2015-06-25$68.93$68.93531,400
2015-06-24$69.77$69.77636,300
2015-06-23$71.66$71.66543,500
2015-06-22$70.95$70.95625,200
2015-06-19$69.11$69.11305,200
2015-06-18$68.38$68.38323,000
2015-06-17$68.53$68.53362,100
2015-06-16$67.61$67.61399,500
2015-06-15$66.97$66.97241,300
2015-06-12$66.93$66.93329,100
2015-06-11$67.19$67.19288,100
2015-06-10$67.02$67.02572,100
2015-06-09$67.25$67.25583,300
2015-06-08$67.59$67.59435,500
2015-06-05$68.15$68.15742,000
2015-06-04$66.52$66.52658,800
2015-06-03$65.20$65.20794,200
2015-06-02$65.21$65.21392,200
2015-06-01$65.58$65.58515,700
2015-05-29$64.87$64.87439,900
2015-05-28$65.91$65.91351,100
2015-05-27$65.95$65.95883,400
2015-05-26$65.39$65.39492,700
2015-05-22$66.47$66.47479,600
2015-05-21$67.24$67.24393,400
2015-05-20$67.33$67.33348,600
2015-05-19$67.97$67.97326,800
2015-05-18$67.94$67.94582,500
2015-05-15$66.26$66.26236,000
2015-05-14$65.79$65.79306,000
2015-05-13$64.70$64.70478,000
2015-05-12$65.85$65.85452,100
2015-05-11$65.49$65.49588,900
2015-05-08$67.07$67.07774,300
2015-05-07$65.47$65.47588,500
2015-05-06$65.39$65.39537,500
2015-05-05$64.31$64.31626,000
2015-05-04$66.08$66.08655,000
2015-05-01$65.71$65.71846,900
2015-04-30$64.34$64.34859,900
2015-04-29$63.29$63.291,040,700
2015-04-28$64.36$64.363,020,300
2015-04-27$70.21$70.21779,900
2015-04-24$69.85$69.85349,400
2015-04-23$69.41$69.41360,000
2015-04-22$69.24$69.24440,900
2015-04-21$67.96$67.961,005,700
2015-04-20$69.58$69.58256,200
2015-04-17$68.98$68.98295,300
2015-04-16$68.84$68.84279,100
2015-04-15$67.59$67.59205,600
2015-04-14$68.29$68.29271,800
2015-04-13$68.92$68.92275,000
2015-04-10$69.68$69.68202,600
2015-04-09$69.37$69.37269,500
2015-04-08$69.83$69.83242,800
2015-04-07$68.97$68.97309,500
2015-04-06$69.83$69.83249,400
2015-04-02$69.87$69.87271,600
2015-04-01$70.57$70.57342,100
2015-03-31$70.53$70.53360,800
2015-03-30$70.93$70.93227,600
2015-03-27$70.46$70.46225,100
2015-03-26$69.61$69.61428,800
2015-03-25$68.35$68.35513,100
2015-03-24$70.77$70.77385,900
2015-03-23$71.56$71.56372,600
2015-03-20$71.29$71.29395,300
2015-03-19$70.50$70.50313,500
2015-03-18$68.39$68.39355,900
2015-03-17$68.48$68.48385,100
2015-03-16$68.50$68.50469,500
2015-03-13$67.26$67.26312,800
2015-03-12$68.20$68.20420,400
2015-03-11$67.70$67.70326,500
2015-03-10$67.55$67.55415,200
2015-03-09$67.18$67.18223,000
2015-03-06$67.15$67.15271,800
2015-03-05$67.84$67.84333,200
2015-03-04$67.72$67.72402,600
2015-03-03$68.06$68.06489,800
2015-03-02$69.41$69.41441,000
2015-02-27$69.01$69.01452,900
2015-02-26$69.44$69.44578,300
2015-02-25$67.75$67.751,588,100
2015-02-24$61.55$61.55547,300
2015-02-23$61.94$61.94514,900
2015-02-20$60.31$60.31332,200
2015-02-19$61.09$61.09331,700
2015-02-18$60.59$60.59218,400
2015-02-17$60.12$60.12429,000
2015-02-13$60.01$60.01507,900
2015-02-12$59.63$59.63523,600
2015-02-11$57.40$57.40198,100
2015-02-10$56.92$56.92191,800
2015-02-09$56.84$56.84213,800
2015-02-06$57.56$57.56357,000
2015-02-05$57.97$57.97389,400
2015-02-04$57.71$57.71335,600
2015-02-03$57.15$57.15244,500
2015-02-02$57.01$57.01304,200
2015-01-30$56.40$56.40353,500
2015-01-29$56.99$56.99419,600
2015-01-28$57.71$57.71327,400
2015-01-27$57.82$57.82305,500
2015-01-26$57.89$57.89272,500
2015-01-23$57.24$57.24310,700
2015-01-22$56.77$56.77389,900
2015-01-21$56.18$56.18319,900
2015-01-20$56.91$56.91379,800
2015-01-16$57.68$57.68319,200
2015-01-15$56.32$56.32398,400
2015-01-14$56.57$56.57482,800
2015-01-13$56.05$56.05503,400
2015-01-12$53.75$53.75316,300
2015-01-09$53.94$53.94519,200
2015-01-08$53.70$53.70460,400
2015-01-07$52.91$52.91490,000
2015-01-06$53.51$53.51618,600
2015-01-05$53.11$53.11601,800
2015-01-02$51.61$51.61228,300