ICON PLC (ICLR) — Price History
As of 2026-09-02 — refreshed nightly from the Closelook data lake. Diary readings, not advice.
Daily prices
| Date | Open | High | Low | Close | Chg % | Volume |
|---|---|---|---|---|---|---|
| 2026-09-02 | 161.88 | 164.24 | 158.66 | 159.84 | -0.97% | 893,167 |
| 2026-09-01 | 165.24 | 165.35 | 160.01 | 161.40 | -2.18% | 604,611 |
| 2026-08-31 | 169.91 | 170.41 | 163.56 | 164.99 | -2.96% | 707,463 |
| 2026-08-28 | 169.41 | 170.42 | 165.70 | 170.02 | +0.18% | 314,630 |
| 2026-08-27 | 168.84 | 174.12 | 168.27 | 169.72 | +0.47% | 376,400 |
| 2026-08-26 | 165.88 | 169.83 | 165.45 | 168.93 | +0.01% | 414,100 |
| 2026-08-25 | 172.69 | 173.00 | 168.01 | 168.91 | -2.63% | 444,900 |
| 2026-08-24 | 170.81 | 174.44 | 168.38 | 173.48 | +0.73% | 420,700 |
| 2026-08-21 | 173.02 | 179.02 | 172.03 | 172.23 | -1.17% | 391,200 |
| 2026-08-20 | 170.17 | 180.89 | 170.17 | 174.27 | +1.03% | 516,300 |
| 2026-08-19 | 170.10 | 175.71 | 167.49 | 172.49 | +3.26% | 687,900 |
| 2026-08-18 | 170.00 | 172.95 | 166.87 | 167.05 | -1.42% | 556,600 |
| 2026-08-17 | 161.34 | 169.73 | 161.17 | 169.45 | +3.86% | 490,000 |
| 2026-08-14 | 166.65 | 167.29 | 162.42 | 163.15 | -2.59% | 323,800 |
| 2026-08-13 | 167.69 | 167.87 | 160.05 | 167.48 | +0.19% | 442,100 |
| 2026-08-12 | 165.27 | 167.74 | 161.77 | 167.17 | +0.96% | 822,300 |
| 2026-08-11 | 165.56 | 167.34 | 161.89 | 165.58 | -0.28% | 662,300 |
| 2026-08-10 | 163.80 | 167.70 | 163.80 | 166.05 | +0.94% | 516,600 |
| 2026-08-07 | 161.86 | 164.89 | 160.46 | 164.51 | +2.07% | 388,400 |
| 2026-08-06 | 162.37 | 162.65 | 159.07 | 161.17 | -1.43% | 469,300 |
| 2026-08-05 | 158.65 | 167.51 | 156.00 | 163.51 | +4.25% | 617,800 |
| 2026-08-04 | 156.71 | 157.42 | 150.86 | 156.85 | -0.98% | 1,045,200 |
| 2026-08-03 | 165.31 | 165.80 | 156.56 | 158.41 | -3.15% | 1,212,100 |
| 2026-07-31 | 165.45 | 171.74 | 162.41 | 163.57 | -1.18% | 871,900 |
| 2026-07-30 | 165.75 | 172.97 | 162.50 | 165.53 | -7.10% | 1,774,100 |
| 2026-07-29 | 180.25 | 182.54 | 175.63 | 178.18 | -1.14% | 1,572,000 |
| 2026-07-28 | 177.58 | 186.64 | 177.17 | 180.24 | +6.79% | 1,790,400 |
| 2026-07-27 | 165.55 | 169.98 | 161.29 | 168.78 | +1.82% | 778,200 |
| 2026-07-24 | 173.86 | 173.89 | 165.58 | 165.76 | -2.68% | 757,700 |
| 2026-07-23 | 175.00 | 182.97 | 169.62 | 170.32 | +1.82% | 1,282,000 |
| 2026-07-22 | 167.19 | 168.00 | 164.14 | 167.28 | +0.40% | 568,100 |
| 2026-07-21 | 163.70 | 167.64 | 162.18 | 166.62 | +0.26% | 576,100 |
| 2026-07-20 | 171.48 | 171.48 | 164.55 | 166.18 | -2.25% | 703,100 |
| 2026-07-17 | 167.00 | 172.40 | 167.00 | 170.00 | +0.00% | 579,600 |
| 2026-07-16 | 171.58 | 173.23 | 167.22 | 170.00 | -1.21% | 501,800 |
| 2026-07-15 | 169.63 | 172.26 | 167.32 | 172.08 | +2.45% | 460,300 |
| 2026-07-14 | 165.10 | 169.38 | 162.83 | 167.97 | +1.13% | 661,100 |
| 2026-07-13 | 165.75 | 168.14 | 164.32 | 166.10 | -0.97% | 401,600 |
| 2026-07-10 | 168.77 | 170.00 | 167.71 | 167.72 | -0.62% | 308,500 |
| 2026-07-09 | 166.45 | 170.40 | 164.42 | 168.77 | +1.99% | 525,300 |
| 2026-07-08 | 166.88 | 167.96 | 162.06 | 165.47 | -1.93% | 653,800 |
| 2026-07-07 | 172.03 | 172.52 | 167.55 | 168.72 | -1.30% | 665,500 |
| 2026-07-06 | 170.29 | 171.23 | 167.83 | 170.94 | -1.23% | 777,200 |
| 2026-07-02 | 177.07 | 179.29 | 170.93 | 173.06 | -1.14% | 938,200 |
| 2026-07-01 | 174.00 | 181.82 | 173.22 | 175.05 | +0.77% | 809,200 |
| 2026-06-30 | 178.29 | 181.00 | 170.85 | 173.71 | +0.42% | 1,067,800 |
| 2026-06-29 | 169.65 | 173.51 | 167.24 | 172.99 | +1.84% | 1,359,700 |
| 2026-06-26 | 158.59 | 170.51 | 158.59 | 169.86 | +5.53% | 1,443,200 |
| 2026-06-25 | 161.92 | 168.63 | 160.47 | 160.96 | +1.76% | 2,251,000 |
| 2026-06-24 | 147.79 | 162.00 | 147.71 | 158.17 | +10.86% | 2,406,500 |
| 2026-06-23 | 139.72 | 145.01 | 138.84 | 142.67 | +1.38% | 696,200 |
| 2026-06-22 | 145.77 | 148.00 | 140.14 | 140.73 | -3.61% | 918,700 |
| 2026-06-18 | 145.32 | 146.51 | 141.70 | 146.00 | +1.91% | 870,100 |
| 2026-06-17 | 143.65 | 145.09 | 140.00 | 143.27 | -0.19% | 989,800 |
| 2026-06-16 | 148.88 | 148.88 | 142.93 | 143.54 | -2.83% | 568,500 |
| 2026-06-15 | 147.20 | 148.74 | 144.84 | 147.72 | +1.05% | 598,000 |
| 2026-06-12 | 150.11 | 151.53 | 143.86 | 146.18 | -2.49% | 703,900 |
| 2026-06-11 | 144.89 | 149.97 | 143.30 | 149.92 | +3.69% | 790,300 |
| 2026-06-10 | 152.15 | 154.27 | 144.31 | 144.59 | -4.76% | 1,014,500 |
| 2026-06-09 | 152.93 | 156.20 | 150.32 | 151.82 | -0.28% | 1,220,500 |
| 2026-06-08 | 149.45 | 153.94 | 147.17 | 152.24 | +1.87% | 1,129,000 |
| 2026-06-05 | 151.78 | 153.75 | 147.97 | 149.45 | -2.19% | 1,348,900 |
| 2026-06-04 | 144.28 | 153.84 | 144.28 | 152.80 | +6.18% | 1,689,900 |
| 2026-06-03 | 136.79 | 145.92 | 135.52 | 143.90 | +4.62% | 1,380,500 |
| 2026-06-02 | 138.28 | 143.04 | 134.39 | 137.54 | -0.35% | 1,244,100 |
| 2026-06-01 | 133.70 | 138.46 | 132.36 | 138.03 | +1.44% | 1,308,100 |
| 2026-05-29 | 134.75 | 138.46 | 131.49 | 136.07 | -0.53% | 1,581,300 |
| 2026-05-28 | 117.82 | 139.69 | 116.48 | 136.80 | +15.49% | 3,417,900 |
| 2026-05-27 | 114.50 | 118.67 | 113.94 | 118.45 | +4.04% | 1,760,000 |
| 2026-05-26 | 116.78 | 116.78 | 113.10 | 113.85 | -2.51% | 996,400 |
| 2026-05-22 | 116.57 | 119.55 | 115.16 | 116.78 | +0.18% | 383,700 |
| 2026-05-21 | 113.90 | 116.80 | 112.43 | 116.57 | +1.29% | 371,700 |
| 2026-05-20 | 112.00 | 118.05 | 108.89 | 115.09 | +1.36% | 859,100 |
| 2026-05-19 | 114.38 | 116.63 | 113.38 | 113.55 | -0.20% | 967,100 |
| 2026-05-18 | 116.38 | 120.00 | 112.86 | 113.78 | -2.23% | 567,500 |
| 2026-05-15 | 117.09 | 118.70 | 115.29 | 116.38 | -0.61% | 643,400 |
| 2026-05-14 | 116.39 | 122.77 | 116.39 | 117.09 | -0.25% | 1,184,800 |
| 2026-05-13 | 121.76 | 121.76 | 115.64 | 117.38 | -3.74% | 641,100 |
| 2026-05-12 | 120.65 | 123.31 | 118.03 | 121.94 | +2.51% | 803,700 |
| 2026-05-11 | 124.14 | 124.80 | 118.79 | 118.96 | -4.44% | 824,500 |
| 2026-05-08 | 124.97 | 128.95 | 120.34 | 124.49 | -0.41% | 681,200 |
| 2026-05-07 | 125.27 | 129.73 | 122.91 | 125.00 | +0.70% | 1,121,600 |
| 2026-05-06 | 123.14 | 125.66 | 121.00 | 124.13 | +2.32% | 1,230,800 |
| 2026-05-05 | 112.00 | 122.45 | 112.00 | 121.32 | +8.35% | 1,594,500 |
| 2026-05-04 | 112.42 | 112.53 | 108.80 | 111.97 | -0.78% | 781,100 |
| 2026-05-01 | 119.66 | 120.49 | 112.12 | 112.85 | -4.63% | 1,000,900 |
| 2026-04-30 | 115.15 | 118.80 | 111.00 | 118.33 | +1.86% | 1,561,200 |
| 2026-04-29 | 116.25 | 119.43 | 110.38 | 116.17 | +13.35% | 4,097,200 |
| 2026-04-28 | 103.09 | 103.85 | 99.06 | 102.49 | -0.70% | 1,580,300 |
| 2026-04-27 | 102.42 | 103.34 | 99.37 | 103.21 | +1.02% | 3,350,300 |
| 2026-04-24 | 107.71 | 107.71 | 99.93 | 102.17 | -3.92% | 1,802,000 |
| 2026-04-23 | 107.50 | 110.10 | 104.03 | 106.34 | -7.87% | 2,320,400 |
| 2026-04-22 | 116.91 | 117.72 | 113.48 | 115.43 | +0.22% | 1,164,500 |
| 2026-04-21 | 116.47 | 118.68 | 114.10 | 115.18 | -1.66% | 1,023,900 |
| 2026-04-20 | 118.25 | 119.45 | 115.78 | 117.12 | -2.14% | 995,000 |
| 2026-04-17 | 116.98 | 121.03 | 116.41 | 119.68 | +3.55% | 1,175,700 |
| 2026-04-16 | 116.54 | 118.54 | 114.26 | 115.58 | -0.79% | 1,139,200 |
| 2026-04-15 | 113.31 | 116.65 | 112.53 | 116.50 | +3.04% | 1,356,600 |
| 2026-04-14 | 110.54 | 114.29 | 110.25 | 113.06 | +2.44% | 899,400 |
| 2026-04-13 | 106.22 | 111.09 | 105.05 | 110.37 | +3.33% | 951,000 |
| 2026-04-10 | 107.76 | 107.76 | 104.07 | 106.81 | +0.10% | 669,600 |
| 2026-04-09 | 105.12 | 106.83 | 102.53 | 106.70 | +0.15% | 693,000 |
| 2026-04-08 | 111.90 | 113.12 | 106.15 | 106.54 | -0.58% | 784,700 |
| 2026-04-07 | 109.62 | 110.74 | 106.42 | 107.16 | -2.24% | 536,600 |
| 2026-04-06 | 113.50 | 114.06 | 108.15 | 109.62 | -4.00% | 633,400 |
| 2026-04-02 | 110.06 | 115.63 | 108.58 | 114.19 | +2.49% | 661,200 |
| 2026-04-01 | 110.83 | 112.94 | 110.33 | 111.42 | +0.69% | 798,200 |
| 2026-03-31 | 105.10 | 112.01 | 103.19 | 110.66 | +5.29% | 1,189,800 |
| 2026-03-30 | 103.07 | 106.90 | 102.30 | 105.10 | +2.96% | 1,089,600 |
| 2026-03-27 | 102.70 | 103.97 | 100.95 | 102.08 | -0.97% | 1,045,800 |
| 2026-03-26 | 101.63 | 103.22 | 100.25 | 103.08 | +3.09% | 846,800 |
| 2026-03-25 | 102.40 | 104.27 | 97.11 | 99.99 | -1.27% | 557,700 |
| 2026-03-24 | 99.88 | 103.92 | 98.60 | 101.28 | +0.93% | 778,700 |
| 2026-03-23 | 101.05 | 103.42 | 99.88 | 100.35 | +0.65% | 802,800 |
| 2026-03-20 | 98.18 | 100.70 | 97.21 | 99.70 | +1.68% | 1,375,300 |
| 2026-03-19 | 96.01 | 98.77 | 95.75 | 98.05 | +0.94% | 689,000 |
| 2026-03-18 | 98.30 | 99.73 | 96.50 | 97.14 | -3.33% | 1,164,300 |
| 2026-03-17 | 98.99 | 102.34 | 98.01 | 100.49 | +2.95% | 874,100 |
| 2026-03-16 | 99.94 | 100.68 | 96.00 | 97.61 | -0.73% | 1,059,400 |
| 2026-03-13 | 98.40 | 99.40 | 97.06 | 98.33 | +0.90% | 970,100 |
| 2026-03-12 | 104.35 | 107.12 | 97.36 | 97.45 | -7.53% | 1,146,400 |
| 2026-03-11 | 107.12 | 107.98 | 104.30 | 105.38 | -1.16% | 791,300 |
| 2026-03-10 | 110.25 | 110.25 | 105.75 | 106.62 | -3.10% | 1,353,363 |
| 2026-03-09 | 105.77 | 110.41 | 104.01 | 110.03 | +2.64% | 1,051,820 |
| 2026-03-06 | 108.23 | 109.97 | 106.28 | 107.20 | -3.07% | 1,393,400 |
| 2026-03-05 | 108.43 | 113.88 | 108.43 | 110.60 | +0.36% | 1,330,100 |
| 2026-03-04 | 109.29 | 111.37 | 106.98 | 110.20 | +1.38% | 1,027,000 |
| 2026-03-03 | 105.89 | 109.58 | 103.74 | 108.70 | +0.40% | 1,225,600 |
| 2026-03-02 | 105.81 | 110.28 | 105.51 | 108.27 | +0.12% | 1,772,000 |
| 2026-02-27 | 105.95 | 108.72 | 104.12 | 108.14 | +1.89% | 1,383,300 |
| 2026-02-26 | 100.65 | 106.86 | 99.98 | 106.13 | +5.08% | 1,396,500 |
| 2026-02-25 | 104.92 | 104.92 | 99.49 | 101.00 | -2.97% | 1,138,400 |
| 2026-02-24 | 104.84 | 106.89 | 103.85 | 104.09 | -0.54% | 1,287,100 |
| 2026-02-23 | 100.68 | 105.50 | 100.03 | 104.66 | +4.97% | 2,454,600 |
| 2026-02-20 | 96.83 | 100.83 | 96.83 | 99.70 | +1.31% | 1,642,900 |
| 2026-02-19 | 94.85 | 99.52 | 92.59 | 98.41 | +1.98% | 2,217,600 |
| 2026-02-18 | 89.26 | 97.30 | 87.91 | 96.50 | +8.89% | 3,163,300 |
| 2026-02-17 | 90.48 | 94.33 | 88.38 | 88.62 | -4.71% | 5,243,400 |
| 2026-02-13 | 81.50 | 96.55 | 81.31 | 93.00 | +16.13% | 14,188,050 |
| 2026-02-12 | 79.97 | 87.00 | 66.57 | 80.08 | -39.85% | 23,558,141 |
| 2026-02-11 | 143.34 | 145.28 | 130.01 | 133.14 | -7.89% | 3,494,949 |
| 2026-02-10 | 154.40 | 154.99 | 144.01 | 144.55 | -6.48% | 1,515,345 |
| 2026-02-09 | 150.80 | 155.00 | 148.91 | 154.57 | +2.64% | 1,316,689 |
| 2026-02-06 | 145.23 | 153.15 | 144.51 | 150.59 | +3.58% | 1,775,730 |
| 2026-02-05 | 162.62 | 164.72 | 144.26 | 145.39 | -10.86% | 1,363,511 |
| 2026-02-04 | 167.67 | 168.99 | 162.87 | 163.11 | -2.86% | 1,858,472 |
| 2026-02-03 | 178.43 | 178.69 | 164.93 | 167.91 | -5.98% | 927,326 |
| 2026-02-02 | 180.25 | 180.50 | 175.07 | 178.59 | -0.92% | 1,108,139 |
| 2026-01-30 | 183.26 | 186.00 | 176.34 | 180.25 | -3.03% | 961,757 |
| 2026-01-29 | 185.03 | 186.26 | 180.03 | 185.89 | -0.23% | 555,448 |
| 2026-01-28 | 186.96 | 190.17 | 180.84 | 186.32 | -0.88% | 408,165 |
| 2026-01-27 | 186.93 | 191.00 | 186.93 | 187.97 | +0.29% | 591,551 |
| 2026-01-26 | 185.68 | 189.99 | 183.90 | 187.42 | +0.39% | 502,350 |
| 2026-01-23 | 186.83 | 189.72 | 184.75 | 186.70 | -0.02% | 515,759 |
| 2026-01-22 | 187.95 | 190.21 | 185.38 | 186.74 | +1.01% | 542,618 |
| 2026-01-21 | 176.55 | 185.44 | 175.18 | 184.87 | +4.70% | 1,186,075 |
| 2026-01-20 | 178.43 | 179.47 | 173.41 | 176.57 | -3.31% | 750,430 |
| 2026-01-16 | 181.91 | 188.00 | 181.44 | 182.61 | +0.03% | 1,397,309 |
| 2026-01-15 | 184.01 | 184.62 | 180.00 | 182.56 | -1.20% | 692,577 |
| 2026-01-14 | 184.17 | 185.99 | 183.22 | 184.77 | +0.81% | 785,086 |
| 2026-01-13 | 182.14 | 185.23 | 180.20 | 183.29 | +1.74% | 868,209 |
| 2026-01-12 | 182.98 | 183.02 | 177.47 | 180.15 | -0.68% | 886,994 |
| 2026-01-09 | 189.99 | 191.00 | 180.27 | 181.38 | -3.63% | 1,433,953 |
| 2026-01-08 | 179.07 | 190.53 | 171.99 | 188.22 | -7.24% | 3,340,765 |
| 2026-01-07 | 203.07 | 203.91 | 200.06 | 202.92 | +0.71% | 706,283 |
| 2026-01-06 | 198.22 | 202.78 | 197.38 | 201.48 | +1.97% | 1,132,224 |
| 2026-01-05 | 186.54 | 198.24 | 186.00 | 197.58 | +4.72% | 1,138,624 |
| 2026-01-02 | 183.95 | 189.53 | 182.47 | 188.67 | +3.54% | 677,638 |
| 2025-12-31 | 182.68 | 184.00 | 181.06 | 182.22 | -0.43% | 309,633 |
| 2025-12-30 | 181.74 | 183.16 | 180.48 | 183.00 | +0.35% | 377,525 |
| 2025-12-29 | 183.20 | 184.93 | 180.75 | 182.36 | -0.26% | 578,263 |
| 2025-12-26 | 183.85 | 183.91 | 180.89 | 182.84 | -0.46% | 245,571 |
| 2025-12-24 | 182.19 | 184.01 | 180.63 | 183.68 | +0.33% | 479,276 |
| 2025-12-23 | 177.98 | 183.33 | 177.31 | 183.07 | +2.19% | 693,082 |
| 2025-12-22 | 173.46 | 180.38 | 172.54 | 179.14 | +3.09% | 987,578 |
| 2025-12-19 | 177.94 | 178.75 | 172.79 | 173.77 | -2.76% | 1,411,860 |
| 2025-12-18 | 182.10 | 185.31 | 177.34 | 178.70 | -0.36% | 803,558 |
| 2025-12-17 | 182.48 | 184.29 | 179.06 | 179.34 | -1.70% | 451,364 |
| 2025-12-16 | 183.71 | 185.56 | 181.19 | 182.45 | -1.04% | 548,334 |
| 2025-12-15 | 184.94 | 189.23 | 181.89 | 184.37 | -1.18% | 1,571,130 |
| 2025-12-12 | 188.44 | 191.85 | 185.81 | 186.58 | -1.76% | 747,921 |
| 2025-12-11 | 187.22 | 190.26 | 185.69 | 189.93 | +2.19% | 778,158 |
| 2025-12-10 | 181.52 | 186.73 | 180.79 | 185.86 | +2.52% | 879,962 |
| 2025-12-09 | 182.69 | 184.20 | 178.80 | 181.29 | -0.44% | 629,615 |
| 2025-12-08 | 185.68 | 186.05 | 180.57 | 182.10 | -2.03% | 1,030,620 |
| 2025-12-05 | 186.61 | 188.99 | 180.95 | 185.87 | +0.05% | 905,324 |
| 2025-12-04 | 185.06 | 186.77 | 174.13 | 185.77 | -1.07% | 1,654,494 |
| 2025-12-03 | 181.61 | 191.15 | 181.61 | 187.78 | +2.53% | 1,031,248 |
| 2025-12-02 | 179.88 | 185.77 | 178.03 | 183.14 | +1.91% | 912,765 |
| 2025-12-01 | 183.80 | 187.56 | 177.12 | 179.71 | -2.86% | 1,336,280 |
| 2025-11-28 | 182.64 | 186.57 | 181.77 | 185.00 | +0.74% | 671,417 |
| 2025-11-26 | 175.64 | 184.09 | 173.88 | 183.65 | +5.23% | 1,628,519 |
| 2025-11-25 | 165.73 | 176.07 | 164.59 | 174.53 | +6.07% | 1,445,021 |
| 2025-11-24 | 163.11 | 165.75 | 161.75 | 164.55 | -0.01% | 799,503 |
| 2025-11-21 | 157.76 | 165.49 | 155.66 | 164.56 | +4.07% | 1,336,906 |
| 2025-11-20 | 158.74 | 162.97 | 154.20 | 158.12 | -0.43% | 1,413,791 |
| 2025-11-19 | 161.74 | 164.41 | 157.35 | 158.81 | -1.37% | 1,386,598 |
| 2025-11-18 | 155.57 | 162.00 | 154.12 | 161.02 | +2.89% | 612,880 |
| 2025-11-17 | 160.91 | 162.38 | 156.34 | 156.49 | -3.51% | 1,030,085 |
| 2025-11-14 | 163.01 | 165.47 | 158.08 | 162.18 | -0.78% | 572,120 |
| 2025-11-13 | 161.25 | 166.32 | 161.25 | 163.45 | +0.02% | 453,392 |
| 2025-11-12 | 164.57 | 167.43 | 163.27 | 163.42 | +0.00% | 566,999 |
| 2025-11-11 | 159.51 | 164.82 | 157.23 | 163.42 | +3.64% | 806,086 |
| 2025-11-10 | 158.03 | 159.76 | 156.05 | 157.68 | -0.92% | 907,914 |
| 2025-11-07 | 159.76 | 159.76 | 155.00 | 159.14 | -0.54% | 627,735 |
| 2025-11-06 | 163.72 | 168.28 | 159.77 | 160.00 | -2.26% | 570,265 |
| 2025-11-05 | 161.75 | 165.04 | 158.55 | 163.70 | +0.45% | 507,072 |
| 2025-11-04 | 166.89 | 168.67 | 162.82 | 162.96 | -3.45% | 654,128 |
| 2025-11-03 | 169.19 | 170.95 | 166.19 | 168.79 | -1.76% | 745,860 |
| 2025-10-31 | 163.42 | 172.99 | 163.42 | 171.82 | +3.93% | 975,037 |
| 2025-10-30 | 164.72 | 166.35 | 162.36 | 165.33 | -0.37% | 898,471 |
| 2025-10-29 | 175.55 | 177.51 | 165.10 | 165.95 | -6.63% | 1,283,669 |
| 2025-10-28 | 180.61 | 180.72 | 174.54 | 177.73 | -2.36% | 1,019,490 |
| 2025-10-27 | 178.11 | 184.57 | 175.13 | 182.03 | +2.20% | 905,751 |
| 2025-10-24 | 179.22 | 179.83 | 173.94 | 178.11 | -1.05% | 1,165,433 |
| 2025-10-23 | 189.00 | 193.00 | 173.38 | 180.00 | -6.54% | 2,237,354 |
| 2025-10-22 | 194.74 | 197.92 | 189.00 | 192.60 | -0.34% | 1,844,845 |
| 2025-10-21 | 187.68 | 198.30 | 184.24 | 193.26 | +2.55% | 1,496,348 |
| 2025-10-20 | 187.45 | 190.36 | 185.50 | 188.45 | +1.83% | 1,028,700 |
| 2025-10-17 | 188.00 | 189.58 | 182.33 | 185.06 | -1.80% | 777,993 |
| 2025-10-16 | 187.64 | 193.21 | 186.48 | 188.46 | +0.32% | 1,020,929 |
| 2025-10-15 | 185.64 | 188.55 | 184.09 | 187.85 | +1.04% | 642,609 |
| 2025-10-14 | 184.72 | 187.36 | 180.47 | 185.91 | -0.08% | 727,221 |
| 2025-10-13 | 183.56 | 188.18 | 182.29 | 186.05 | +1.40% | 805,035 |
| 2025-10-10 | 188.12 | 188.79 | 181.09 | 183.49 | -2.25% | 540,781 |
| 2025-10-09 | 186.13 | 189.41 | 185.58 | 187.71 | +0.66% | 484,846 |
| 2025-10-08 | 186.41 | 188.36 | 183.71 | 186.48 | -0.09% | 1,169,939 |
| 2025-10-07 | 190.43 | 192.74 | 185.80 | 186.65 | -1.98% | 640,406 |
| 2025-10-06 | 194.19 | 194.40 | 190.20 | 190.43 | -1.78% | 653,862 |
| 2025-10-03 | 192.00 | 197.05 | 192.00 | 193.89 | +0.48% | 756,989 |
| 2025-10-02 | 190.26 | 193.74 | 188.29 | 192.96 | +0.34% | 1,072,491 |
| 2025-10-01 | 174.70 | 192.58 | 174.70 | 192.31 | +9.89% | 1,797,479 |
| 2025-09-30 | 163.06 | 175.13 | 162.27 | 175.00 | +7.07% | 1,423,059 |
| 2025-09-29 | 165.34 | 165.36 | 162.03 | 163.44 | -0.21% | 615,352 |
| 2025-09-26 | 163.13 | 164.65 | 161.64 | 163.79 | +0.78% | 593,279 |
| 2025-09-25 | 167.40 | 167.40 | 162.41 | 162.53 | -2.96% | 1,092,224 |
| 2025-09-24 | 170.31 | 171.91 | 166.93 | 167.49 | -1.70% | 716,511 |
| 2025-09-23 | 170.83 | 173.01 | 169.40 | 170.38 | -0.25% | 518,589 |
| 2025-09-22 | 173.82 | 173.89 | 169.77 | 170.80 | -1.84% | 767,566 |
| 2025-09-19 | 182.03 | 183.46 | 173.19 | 174.00 | -3.03% | 1,804,750 |
| 2025-09-18 | 175.27 | 179.51 | 174.62 | 179.43 | +2.41% | 580,652 |
| 2025-09-17 | 172.79 | 178.17 | 172.79 | 175.21 | +1.20% | 895,051 |
| 2025-09-16 | 171.58 | 175.52 | 170.87 | 173.13 | +1.57% | 1,333,943 |
| 2025-09-15 | 176.69 | 177.00 | 170.35 | 170.46 | -2.59% | 1,080,719 |
| 2025-09-12 | 172.46 | 176.06 | 170.27 | 175.00 | -0.06% | 1,597,382 |
| 2025-09-11 | 166.72 | 175.38 | 166.40 | 175.11 | +5.85% | 1,410,450 |
| 2025-09-10 | 169.22 | 169.93 | 164.00 | 165.44 | -2.07% | 1,468,735 |
| 2025-09-09 | 171.08 | 175.42 | 168.61 | 168.94 | -4.99% | 1,155,429 |
| 2025-09-08 | 172.83 | 180.07 | 172.83 | 177.81 | +1.68% | 1,168,833 |
| 2025-09-05 | 177.30 | 180.95 | 174.03 | 174.88 | -0.84% | 1,260,191 |
Most recent 250 sessions, newest first.
Seasonal returns
Best month historically: Jun (+19.34%). Worst month: Feb (-21.13%). Based on 2 years of daily data (2025–2026).
FAQ · from the current price data · as of 2026-09-02
Quick answers
What is ICON PLC's (ICLR) latest close?
159.84 on 2026-09-02, from the Closelook data lake's daily price record.
What is ICLR's 52-week high and low?
203.91 high and 66.57 low over the trailing 52 weeks, as of 2026-09-02.
What is ICON PLC's strongest and weakest month historically?
Historically, ICLR's strongest calendar month has been Jun (average +19.34%) and its weakest Feb (average -21.13%), based on 2 years of daily data (2025–2026).
How many years of seasonality does this cover?
2 years (2025–2026), computed from 418 daily bars in the Closelook data lake.