Ionis Pharmaceuticals Inc (IONS) — Price History
As of 2026-08-07 — refreshed nightly from the Closelook data lake. Diary readings, not advice.
Daily prices
| Date | Open | High | Low | Close | Chg % | Volume |
|---|---|---|---|---|---|---|
| 2026-08-07 | 54.73 | 56.60 | 54.40 | 56.56 | +3.80% | 2,009,277 |
| 2026-08-06 | 54.59 | 55.42 | 54.02 | 54.49 | +0.55% | 2,592,317 |
| 2026-08-05 | 55.17 | 55.36 | 53.58 | 54.19 | -1.60% | 2,122,267 |
| 2026-08-04 | 54.85 | 55.22 | 53.87 | 55.07 | +1.06% | 2,688,216 |
| 2026-08-03 | 52.66 | 54.54 | 52.16 | 54.49 | +5.25% | 3,212,858 |
| 2026-07-31 | 53.33 | 53.33 | 51.28 | 51.77 | -2.83% | 2,570,536 |
| 2026-07-30 | 53.92 | 54.04 | 52.65 | 53.28 | -1.41% | 2,875,352 |
| 2026-07-29 | 55.09 | 55.35 | 53.50 | 54.04 | -2.28% | 3,129,432 |
| 2026-07-28 | 56.56 | 56.56 | 54.00 | 55.30 | -1.18% | 2,805,274 |
| 2026-07-27 | 56.92 | 57.09 | 55.79 | 55.96 | -1.04% | 2,584,895 |
| 2026-07-24 | 56.32 | 57.36 | 56.19 | 56.55 | +1.22% | 3,094,731 |
| 2026-07-23 | 53.71 | 57.48 | 53.35 | 55.87 | +3.44% | 3,834,344 |
| 2026-07-22 | 51.16 | 54.06 | 50.01 | 54.01 | +1.16% | 8,732,966 |
| 2026-07-21 | 52.75 | 54.13 | 52.26 | 53.39 | +0.83% | 3,074,069 |
| 2026-07-20 | 54.47 | 54.80 | 52.82 | 52.95 | -2.65% | 2,167,064 |
| 2026-07-17 | 54.10 | 54.69 | 53.76 | 54.39 | -0.48% | 2,572,809 |
| 2026-07-16 | 53.95 | 55.98 | 53.38 | 54.65 | -0.15% | 3,805,259 |
| 2026-07-15 | 54.48 | 54.88 | 53.51 | 54.73 | -0.36% | 3,577,545 |
| 2026-07-14 | 55.80 | 56.45 | 54.53 | 54.93 | -3.21% | 4,700,265 |
| 2026-07-13 | 57.91 | 57.91 | 56.11 | 56.75 | -2.58% | 5,097,949 |
| 2026-07-10 | 64.27 | 64.44 | 58.20 | 58.25 | -9.37% | 11,444,106 |
| 2026-07-09 | 67.78 | 70.35 | 64.10 | 64.27 | -23.90% | 20,447,626 |
| 2026-07-08 | 85.56 | 86.74 | 83.92 | 84.46 | -2.17% | 2,280,833 |
| 2026-07-07 | 84.42 | 86.67 | 82.95 | 86.33 | +3.79% | 2,646,707 |
| 2026-07-06 | 82.11 | 84.01 | 81.19 | 83.18 | +1.69% | 1,847,437 |
| 2026-07-02 | 79.53 | 81.99 | 79.11 | 81.80 | +3.30% | 2,301,899 |
| 2026-07-01 | 79.13 | 79.48 | 77.95 | 79.19 | -0.13% | 1,442,398 |
| 2026-06-30 | 81.17 | 81.24 | 79.21 | 79.29 | -1.74% | 2,380,302 |
| 2026-06-29 | 81.00 | 82.53 | 79.95 | 80.69 | -0.60% | 2,806,623 |
| 2026-06-26 | 78.80 | 82.63 | 78.80 | 81.18 | +3.63% | 3,828,331 |
| 2026-06-25 | 76.69 | 79.55 | 76.25 | 78.34 | +2.38% | 2,583,536 |
| 2026-06-24 | 76.40 | 79.00 | 76.03 | 76.52 | +0.70% | 2,485,706 |
| 2026-06-23 | 75.89 | 77.31 | 75.77 | 75.99 | +0.13% | 1,405,415 |
| 2026-06-22 | 74.85 | 76.56 | 74.12 | 75.89 | +2.39% | 1,956,125 |
| 2026-06-18 | 75.00 | 75.66 | 73.50 | 74.12 | -0.26% | 2,984,374 |
| 2026-06-17 | 73.09 | 75.12 | 72.55 | 74.31 | +1.67% | 1,788,351 |
| 2026-06-16 | 73.93 | 73.95 | 72.30 | 73.09 | -1.18% | 1,801,390 |
| 2026-06-15 | 73.49 | 74.27 | 72.88 | 73.96 | +0.93% | 1,506,352 |
| 2026-06-12 | 73.82 | 74.35 | 72.57 | 73.28 | -0.74% | 1,964,868 |
| 2026-06-11 | 73.34 | 74.47 | 72.76 | 73.82 | +0.68% | 2,234,438 |
| 2026-06-10 | 74.43 | 75.85 | 72.83 | 73.32 | -1.69% | 1,595,746 |
| 2026-06-09 | 74.77 | 75.79 | 73.53 | 74.58 | +1.41% | 1,568,661 |
| 2026-06-08 | 74.33 | 74.43 | 73.14 | 73.54 | -1.26% | 1,620,750 |
| 2026-06-05 | 75.24 | 75.96 | 73.81 | 74.48 | -0.87% | 1,982,003 |
| 2026-06-04 | 74.01 | 75.88 | 73.82 | 75.13 | +1.77% | 1,241,131 |
| 2026-06-03 | 72.68 | 74.12 | 72.02 | 73.82 | +1.16% | 1,303,889 |
| 2026-06-02 | 74.85 | 75.22 | 72.56 | 72.97 | -3.20% | 2,086,205 |
| 2026-06-01 | 75.67 | 76.19 | 74.70 | 75.38 | -1.46% | 1,467,682 |
| 2026-05-29 | 77.54 | 78.10 | 76.39 | 76.50 | -1.07% | 1,675,660 |
| 2026-05-28 | 76.58 | 78.00 | 75.34 | 77.33 | +1.10% | 1,603,088 |
| 2026-05-27 | 76.24 | 77.40 | 76.23 | 76.49 | +0.55% | 1,341,369 |
| 2026-05-26 | 76.00 | 76.74 | 74.73 | 76.07 | +0.67% | 1,279,224 |
| 2026-05-22 | 75.71 | 76.80 | 75.00 | 75.56 | -0.29% | 1,579,206 |
| 2026-05-21 | 74.76 | 76.48 | 74.21 | 75.78 | +0.96% | 2,295,157 |
| 2026-05-20 | 74.67 | 75.69 | 73.97 | 75.06 | +1.65% | 2,005,309 |
| 2026-05-19 | 72.76 | 74.15 | 72.00 | 73.84 | +1.82% | 1,519,490 |
| 2026-05-18 | 74.58 | 74.78 | 71.93 | 72.52 | -2.30% | 2,211,491 |
| 2026-05-15 | 75.89 | 75.93 | 73.32 | 74.23 | -1.92% | 2,119,183 |
| 2026-05-14 | 79.00 | 79.19 | 75.31 | 75.68 | -2.47% | 1,798,305 |
| 2026-05-13 | 75.67 | 78.03 | 75.08 | 77.60 | +2.33% | 1,360,373 |
| 2026-05-12 | 76.03 | 77.13 | 75.38 | 75.83 | +0.60% | 1,408,887 |
| 2026-05-11 | 76.03 | 77.01 | 74.85 | 75.38 | -0.44% | 1,533,667 |
| 2026-05-08 | 76.45 | 77.40 | 75.24 | 75.71 | -0.41% | 1,656,234 |
| 2026-05-07 | 76.56 | 76.56 | 74.87 | 76.02 | -1.08% | 1,885,704 |
| 2026-05-06 | 75.62 | 77.42 | 75.29 | 76.85 | +2.13% | 1,799,880 |
| 2026-05-05 | 75.84 | 76.96 | 74.82 | 75.25 | -0.27% | 850,248 |
| 2026-05-04 | 75.28 | 76.00 | 74.47 | 75.45 | +0.23% | 1,689,516 |
| 2026-05-01 | 74.86 | 76.17 | 72.94 | 75.28 | +0.70% | 1,821,465 |
| 2026-04-30 | 74.91 | 77.76 | 73.81 | 74.76 | -0.09% | 2,430,344 |
| 2026-04-29 | 72.06 | 74.95 | 71.30 | 74.83 | +4.25% | 3,675,234 |
| 2026-04-28 | 72.71 | 73.10 | 71.17 | 71.78 | -0.62% | 2,396,291 |
| 2026-04-27 | 74.04 | 75.10 | 72.21 | 72.23 | -1.42% | 2,311,634 |
| 2026-04-24 | 74.09 | 74.51 | 72.33 | 73.27 | -1.11% | 1,817,367 |
| 2026-04-23 | 74.96 | 76.06 | 73.23 | 74.09 | -0.99% | 1,377,408 |
| 2026-04-22 | 75.22 | 75.44 | 74.00 | 74.83 | +0.07% | 2,024,007 |
| 2026-04-21 | 75.87 | 75.96 | 73.80 | 74.78 | -0.12% | 1,818,784 |
| 2026-04-20 | 75.50 | 75.62 | 74.58 | 74.87 | -1.11% | 1,106,829 |
| 2026-04-17 | 75.66 | 76.33 | 74.95 | 75.71 | +0.60% | 1,719,446 |
| 2026-04-16 | 76.42 | 76.53 | 73.91 | 75.26 | -2.03% | 1,873,899 |
| 2026-04-15 | 77.10 | 77.18 | 75.77 | 76.82 | +0.08% | 1,288,372 |
| 2026-04-14 | 74.88 | 77.38 | 74.88 | 76.76 | +2.41% | 1,595,277 |
| 2026-04-13 | 75.17 | 77.17 | 74.56 | 74.95 | -0.29% | 1,650,871 |
| 2026-04-10 | 77.02 | 77.14 | 74.53 | 75.17 | -1.65% | 1,581,578 |
| 2026-04-09 | 74.98 | 76.97 | 74.62 | 76.43 | +1.93% | 1,200,978 |
| 2026-04-08 | 76.07 | 76.48 | 74.30 | 74.98 | +1.48% | 1,266,771 |
| 2026-04-07 | 74.05 | 74.27 | 72.42 | 73.89 | -0.59% | 1,118,312 |
| 2026-04-06 | 74.54 | 75.47 | 73.56 | 74.33 | -0.62% | 1,440,939 |
| 2026-04-02 | 73.74 | 75.13 | 73.35 | 74.79 | -0.45% | 1,791,632 |
| 2026-04-01 | 75.70 | 76.48 | 74.79 | 75.13 | +0.05% | 1,664,978 |
| 2026-03-31 | 73.64 | 75.92 | 73.45 | 75.09 | +3.54% | 1,852,352 |
| 2026-03-30 | 73.12 | 73.21 | 71.48 | 72.52 | +0.51% | 2,045,479 |
| 2026-03-27 | 74.00 | 74.05 | 71.86 | 72.15 | -2.82% | 1,948,364 |
| 2026-03-26 | 72.25 | 75.63 | 70.50 | 74.24 | +2.12% | 3,884,070 |
| 2026-03-25 | 70.68 | 73.61 | 70.68 | 72.70 | +4.33% | 2,994,308 |
| 2026-03-24 | 70.27 | 70.64 | 68.90 | 69.68 | -1.57% | 1,844,404 |
| 2026-03-23 | 72.25 | 73.15 | 70.67 | 70.79 | -0.28% | 2,198,127 |
| 2026-03-20 | 71.51 | 72.59 | 70.50 | 70.99 | -0.46% | 2,920,652 |
| 2026-03-19 | 71.40 | 71.94 | 70.51 | 71.32 | -0.49% | 2,247,918 |
| 2026-03-18 | 71.84 | 72.30 | 70.92 | 71.67 | -0.91% | 2,180,298 |
| 2026-03-17 | 72.35 | 73.30 | 71.92 | 72.33 | -0.01% | 1,985,030 |
| 2026-03-16 | 71.58 | 72.88 | 71.29 | 72.34 | +1.62% | 3,231,515 |
| 2026-03-13 | 73.21 | 74.16 | 70.42 | 71.19 | -1.59% | 1,972,137 |
| 2026-03-12 | 74.30 | 74.30 | 72.01 | 72.34 | -3.28% | 2,461,797 |
| 2026-03-11 | 75.15 | 76.00 | 74.54 | 74.79 | -1.15% | 1,895,367 |
| 2026-03-10 | 75.36 | 77.03 | 74.51 | 75.66 | +0.40% | 2,785,714 |
| 2026-03-09 | 73.50 | 75.63 | 73.45 | 75.36 | +1.78% | 3,215,157 |
| 2026-03-06 | 73.97 | 75.16 | 73.15 | 74.04 | -1.49% | 1,904,239 |
| 2026-03-05 | 78.16 | 79.04 | 74.27 | 75.16 | -5.40% | 2,969,830 |
| 2026-03-04 | 79.16 | 80.06 | 77.67 | 79.45 | +1.00% | 2,503,118 |
| 2026-03-03 | 80.42 | 81.40 | 78.50 | 78.66 | -4.03% | 2,045,143 |
| 2026-03-02 | 79.27 | 82.75 | 79.27 | 81.96 | +1.00% | 3,098,359 |
| 2026-02-27 | 80.59 | 82.10 | 80.06 | 81.15 | +0.68% | 2,773,689 |
| 2026-02-26 | 80.32 | 82.44 | 78.92 | 80.60 | -0.41% | 3,330,043 |
| 2026-02-25 | 81.75 | 85.11 | 80.47 | 80.93 | -5.29% | 3,188,709 |
| 2026-02-24 | 84.66 | 85.47 | 83.45 | 85.45 | +1.00% | 2,384,832 |
| 2026-02-23 | 82.71 | 84.96 | 82.71 | 84.60 | +1.74% | 1,724,186 |
| 2026-02-20 | 82.85 | 83.63 | 81.64 | 83.15 | +0.01% | 2,832,477 |
| 2026-02-19 | 81.50 | 83.33 | 80.39 | 83.14 | +1.13% | 2,023,972 |
| 2026-02-18 | 81.26 | 83.06 | 80.98 | 82.22 | +1.06% | 1,950,099 |
| 2026-02-17 | 80.30 | 82.53 | 80.23 | 81.36 | +0.94% | 1,889,525 |
| 2026-02-13 | 81.18 | 82.56 | 79.78 | 80.60 | -1.44% | 1,931,201 |
| 2026-02-12 | 84.20 | 84.91 | 81.20 | 81.78 | -3.05% | 1,734,659 |
| 2026-02-11 | 84.19 | 84.96 | 82.00 | 84.35 | +0.07% | 1,104,176 |
| 2026-02-10 | 84.49 | 84.81 | 83.57 | 84.29 | -0.59% | 1,382,673 |
| 2026-02-09 | 86.13 | 86.49 | 84.61 | 84.79 | -1.98% | 1,738,204 |
| 2026-02-06 | 84.85 | 86.59 | 84.17 | 86.50 | +3.62% | 1,996,521 |
| 2026-02-05 | 84.51 | 86.74 | 82.89 | 83.48 | -1.78% | 2,677,732 |
| 2026-02-04 | 85.72 | 85.95 | 82.55 | 84.99 | +0.47% | 3,010,014 |
| 2026-02-03 | 83.00 | 85.45 | 83.00 | 84.59 | +1.83% | 1,461,130 |
| 2026-02-02 | 82.54 | 83.35 | 81.90 | 83.07 | +0.48% | 1,788,931 |
| 2026-01-30 | 83.48 | 83.70 | 82.21 | 82.67 | -1.44% | 2,518,439 |
| 2026-01-29 | 82.38 | 84.30 | 81.89 | 83.88 | +2.39% | 1,646,754 |
| 2026-01-28 | 81.92 | 82.63 | 81.63 | 81.92 | -0.27% | 1,732,406 |
| 2026-01-27 | 81.01 | 82.52 | 81.01 | 82.14 | +1.41% | 2,338,625 |
| 2026-01-26 | 79.49 | 81.28 | 79.24 | 81.00 | +0.89% | 1,700,602 |
| 2026-01-23 | 81.71 | 82.20 | 79.11 | 80.28 | -1.84% | 2,128,921 |
| 2026-01-22 | 79.62 | 82.19 | 78.89 | 81.79 | +2.96% | 3,695,674 |
| 2026-01-21 | 77.09 | 79.54 | 77.01 | 79.44 | +2.46% | 3,298,663 |
| 2026-01-20 | 75.03 | 77.99 | 74.20 | 77.53 | +1.57% | 4,894,345 |
| 2026-01-16 | 77.14 | 78.00 | 74.49 | 76.33 | -1.14% | 3,000,587 |
| 2026-01-15 | 79.25 | 79.75 | 77.15 | 77.21 | -2.10% | 1,409,021 |
| 2026-01-14 | 79.04 | 79.57 | 77.69 | 78.87 | -0.77% | 2,121,498 |
| 2026-01-13 | 82.24 | 82.57 | 78.61 | 79.48 | -2.67% | 1,885,179 |
| 2026-01-12 | 80.50 | 82.21 | 78.88 | 81.66 | +1.69% | 1,570,607 |
| 2026-01-09 | 82.17 | 83.23 | 79.30 | 80.30 | -1.52% | 2,668,760 |
| 2026-01-08 | 83.17 | 83.79 | 79.94 | 81.54 | -1.96% | 2,051,548 |
| 2026-01-07 | 82.50 | 86.15 | 82.40 | 83.17 | +2.06% | 3,889,646 |
| 2026-01-06 | 78.89 | 81.54 | 78.00 | 81.49 | +3.77% | 2,651,738 |
| 2026-01-05 | 79.18 | 79.42 | 76.08 | 78.53 | -1.43% | 1,448,687 |
| 2026-01-02 | 79.88 | 80.21 | 78.02 | 79.67 | +0.71% | 1,400,448 |
| 2025-12-31 | 78.78 | 79.84 | 78.63 | 79.11 | +0.18% | 1,096,900 |
| 2025-12-30 | 79.50 | 79.99 | 78.52 | 78.97 | -1.26% | 1,146,166 |
| 2025-12-29 | 79.73 | 80.04 | 78.74 | 79.98 | +0.06% | 1,077,894 |
| 2025-12-26 | 80.15 | 80.42 | 79.18 | 79.93 | -0.89% | 725,281 |
| 2025-12-24 | 80.33 | 81.02 | 80.33 | 80.65 | +0.40% | 480,227 |
| 2025-12-23 | 80.61 | 81.84 | 79.63 | 80.33 | -1.24% | 1,229,924 |
| 2025-12-22 | 79.26 | 82.09 | 79.09 | 81.34 | +2.22% | 2,257,844 |
| 2025-12-19 | 77.80 | 79.83 | 77.63 | 79.57 | +2.50% | 3,557,484 |
| 2025-12-18 | 77.39 | 78.16 | 76.69 | 77.63 | +0.71% | 1,765,565 |
| 2025-12-17 | 78.77 | 79.49 | 77.07 | 77.08 | -1.65% | 2,146,201 |
| 2025-12-16 | 79.41 | 79.56 | 77.16 | 78.37 | -1.74% | 1,959,742 |
| 2025-12-15 | 80.35 | 81.00 | 79.31 | 79.76 | -1.31% | 1,977,626 |
| 2025-12-12 | 79.19 | 80.92 | 78.50 | 80.82 | +2.12% | 1,468,893 |
| 2025-12-11 | 78.63 | 79.86 | 78.05 | 79.14 | +0.65% | 2,052,200 |
| 2025-12-10 | 79.38 | 79.71 | 77.79 | 78.63 | -0.29% | 2,659,323 |
| 2025-12-09 | 80.55 | 81.22 | 78.32 | 78.86 | -3.25% | 1,866,337 |
| 2025-12-08 | 82.12 | 82.86 | 81.18 | 81.51 | -0.21% | 1,553,583 |
| 2025-12-05 | 82.19 | 82.44 | 80.64 | 81.68 | -0.16% | 1,714,986 |
| 2025-12-04 | 81.90 | 83.61 | 81.44 | 81.81 | -0.04% | 2,317,827 |
| 2025-12-03 | 81.70 | 83.09 | 80.98 | 81.84 | +0.65% | 2,531,161 |
| 2025-12-02 | 82.38 | 82.69 | 80.00 | 81.31 | -0.83% | 2,454,566 |
| 2025-12-01 | 82.03 | 82.27 | 80.11 | 81.99 | -0.89% | 1,865,505 |
| 2025-11-28 | 82.59 | 82.95 | 81.67 | 82.73 | +0.04% | 852,943 |
| 2025-11-26 | 81.15 | 82.91 | 80.75 | 82.70 | +2.19% | 2,955,547 |
| 2025-11-25 | 78.52 | 81.20 | 78.33 | 80.93 | +3.07% | 2,543,172 |
| 2025-11-24 | 76.34 | 78.79 | 76.16 | 78.52 | +3.19% | 3,217,036 |
| 2025-11-21 | 73.00 | 76.31 | 73.00 | 76.09 | +4.06% | 2,076,032 |
| 2025-11-20 | 74.17 | 75.40 | 72.50 | 73.12 | -1.19% | 3,208,760 |
| 2025-11-19 | 74.55 | 75.00 | 71.83 | 74.00 | -0.67% | 3,620,815 |
| 2025-11-18 | 72.81 | 74.52 | 71.99 | 74.50 | +1.69% | 2,056,681 |
| 2025-11-17 | 70.70 | 74.42 | 70.69 | 73.26 | +2.39% | 3,504,705 |
| 2025-11-14 | 69.66 | 72.54 | 68.90 | 71.55 | +2.45% | 3,372,265 |
| 2025-11-13 | 72.56 | 73.05 | 68.22 | 69.84 | -3.89% | 11,502,846 |
| 2025-11-12 | 71.19 | 74.50 | 70.40 | 72.67 | +0.30% | 5,067,958 |
| 2025-11-11 | 69.32 | 72.79 | 68.55 | 72.45 | +4.18% | 2,268,649 |
| 2025-11-10 | 70.05 | 71.49 | 66.66 | 69.54 | -5.45% | 4,399,684 |
| 2025-11-07 | 73.58 | 75.00 | 72.36 | 73.55 | -0.74% | 2,332,419 |
| 2025-11-06 | 74.58 | 76.78 | 73.91 | 74.10 | -0.78% | 2,424,206 |
| 2025-11-05 | 72.14 | 75.08 | 71.48 | 74.68 | +2.47% | 2,259,305 |
| 2025-11-04 | 72.40 | 74.21 | 72.40 | 72.88 | -1.05% | 1,726,391 |
| 2025-11-03 | 74.77 | 75.25 | 71.95 | 73.65 | -0.87% | 2,576,035 |
| 2025-10-31 | 74.50 | 75.49 | 74.02 | 74.30 | +0.18% | 2,395,612 |
| 2025-10-30 | 71.91 | 74.70 | 71.66 | 74.17 | +3.19% | 2,177,727 |
| 2025-10-29 | 72.37 | 74.05 | 71.14 | 71.88 | -2.30% | 2,164,198 |
| 2025-10-28 | 72.99 | 74.04 | 72.50 | 73.57 | +0.79% | 2,559,568 |
| 2025-10-27 | 72.03 | 73.27 | 71.46 | 72.99 | +3.01% | 1,842,613 |
| 2025-10-24 | 72.39 | 72.44 | 70.22 | 70.86 | -0.90% | 1,990,370 |
| 2025-10-23 | 71.69 | 72.44 | 71.05 | 71.50 | +0.00% | 1,605,852 |
| 2025-10-22 | 71.23 | 71.98 | 70.60 | 71.50 | -0.20% | 1,508,356 |
| 2025-10-21 | 72.94 | 73.20 | 70.47 | 71.64 | -2.60% | 2,529,928 |
| 2025-10-20 | 73.55 | 73.69 | 72.30 | 73.55 | +0.63% | 1,395,624 |
| 2025-10-17 | 72.96 | 74.02 | 72.32 | 73.09 | +0.03% | 1,310,772 |
| 2025-10-16 | 73.12 | 74.42 | 72.07 | 73.07 | +0.94% | 1,739,636 |
| 2025-10-15 | 71.42 | 73.92 | 71.24 | 72.39 | +1.43% | 3,234,234 |
| 2025-10-14 | 70.59 | 72.15 | 70.08 | 71.37 | +1.10% | 1,264,896 |
| 2025-10-13 | 70.16 | 71.50 | 69.84 | 70.59 | +0.89% | 2,624,101 |
| 2025-10-10 | 70.00 | 70.49 | 69.40 | 69.97 | -0.43% | 1,697,166 |
| 2025-10-09 | 70.21 | 70.89 | 69.68 | 70.27 | +0.44% | 1,959,024 |
| 2025-10-08 | 70.49 | 71.87 | 69.60 | 69.96 | +1.48% | 3,102,776 |
| 2025-10-07 | 69.00 | 69.77 | 67.95 | 68.94 | -0.12% | 1,903,691 |
| 2025-10-06 | 69.15 | 70.14 | 68.85 | 69.02 | -0.19% | 1,824,037 |
| 2025-10-03 | 68.33 | 69.25 | 67.64 | 69.15 | +1.10% | 2,579,755 |
| 2025-10-02 | 66.21 | 68.41 | 65.97 | 68.40 | +3.95% | 2,999,333 |
| 2025-10-01 | 65.35 | 66.25 | 64.92 | 65.80 | +0.58% | 2,222,143 |
| 2025-09-30 | 63.90 | 65.55 | 63.66 | 65.42 | +1.98% | 2,140,270 |
| 2025-09-29 | 63.76 | 64.70 | 63.36 | 64.15 | +0.09% | 1,454,533 |
| 2025-09-26 | 64.03 | 64.49 | 63.05 | 64.09 | +1.78% | 1,522,295 |
| 2025-09-25 | 63.47 | 64.07 | 62.72 | 62.97 | -1.52% | 2,314,520 |
| 2025-09-24 | 62.65 | 63.99 | 62.19 | 63.94 | +2.19% | 1,592,919 |
| 2025-09-23 | 61.51 | 63.13 | 61.03 | 62.57 | +1.97% | 2,066,238 |
| 2025-09-22 | 63.18 | 63.18 | 61.05 | 61.36 | +0.57% | 2,682,881 |
| 2025-09-19 | 61.91 | 62.00 | 60.41 | 61.01 | -1.18% | 3,305,122 |
| 2025-09-18 | 62.15 | 62.52 | 61.21 | 61.74 | +0.93% | 1,644,660 |
| 2025-09-17 | 61.44 | 62.09 | 60.86 | 61.17 | -0.24% | 1,636,439 |
| 2025-09-16 | 61.03 | 61.54 | 60.66 | 61.31 | +0.35% | 1,787,612 |
| 2025-09-15 | 62.94 | 63.42 | 60.64 | 61.10 | -3.26% | 2,151,273 |
| 2025-09-12 | 63.85 | 64.61 | 63.07 | 63.16 | -1.37% | 1,471,497 |
| 2025-09-11 | 63.65 | 64.20 | 62.79 | 64.04 | +0.06% | 1,816,829 |
| 2025-09-10 | 64.30 | 64.72 | 62.84 | 64.00 | -0.62% | 2,258,156 |
| 2025-09-09 | 61.15 | 64.71 | 60.98 | 64.40 | +5.57% | 4,303,839 |
| 2025-09-08 | 61.20 | 61.26 | 59.36 | 61.00 | -0.38% | 2,774,558 |
| 2025-09-05 | 59.43 | 62.01 | 59.22 | 61.23 | +3.17% | 3,197,740 |
| 2025-09-04 | 59.34 | 60.75 | 58.84 | 59.35 | -1.88% | 3,906,664 |
| 2025-09-03 | 58.98 | 62.08 | 58.56 | 60.49 | +5.22% | 10,338,212 |
| 2025-09-02 | 49.14 | 57.92 | 49.13 | 57.49 | +34.84% | 16,461,729 |
| 2025-08-29 | 42.50 | 42.75 | 42.13 | 42.63 | +0.04% | 1,152,750 |
| 2025-08-28 | 42.75 | 43.35 | 42.59 | 42.62 | -0.30% | 1,097,745 |
| 2025-08-27 | 42.17 | 43.09 | 41.95 | 42.75 | +1.38% | 1,949,911 |
| 2025-08-26 | 41.70 | 42.57 | 41.70 | 42.17 | +0.84% | 2,596,462 |
| 2025-08-25 | 42.82 | 43.06 | 41.79 | 41.82 | -2.04% | 1,571,973 |
| 2025-08-22 | 43.68 | 43.72 | 42.09 | 42.69 | -1.26% | 1,859,935 |
| 2025-08-21 | 42.60 | 44.99 | 42.47 | 43.23 | +0.99% | 1,876,589 |
| 2025-08-20 | 42.45 | 43.26 | 41.96 | 42.81 | +0.78% | 2,285,988 |
| 2025-08-19 | 43.49 | 43.90 | 42.27 | 42.48 | -2.19% | 2,003,784 |
| 2025-08-18 | 43.99 | 44.29 | 43.41 | 43.43 | -0.80% | 1,500,750 |
| 2025-08-15 | 42.86 | 43.82 | 42.80 | 43.78 | +2.17% | 1,602,702 |
| 2025-08-14 | 43.00 | 43.40 | 42.44 | 42.85 | -0.58% | 1,582,645 |
| 2025-08-13 | 41.54 | 43.22 | 41.54 | 43.10 | +4.08% | 3,020,967 |
| 2025-08-12 | 40.87 | 41.42 | 40.37 | 41.41 | +1.40% | 1,496,847 |
| 2025-08-11 | 41.51 | 41.93 | 40.79 | 40.84 | -1.92% | 1,799,768 |
Most recent 250 sessions, newest first.
Seasonal returns
Best month historically: Jun (+9.88%). Worst month: Jul (-5.29%). Based on 5 years of daily data (2022–2026).
FAQ · from the current price data · as of 2026-08-07
Quick answers
What is Ionis Pharmaceuticals Inc's (IONS) latest close?
56.56 on 2026-08-07, from the Closelook data lake's daily price record.
What is IONS's 52-week high and low?
86.74 high and 40.03 low over the trailing 52 weeks, as of 2026-08-07.
What is Ionis Pharmaceuticals Inc's strongest and weakest month historically?
Historically, IONS's strongest calendar month has been Jun (average +9.88%) and its weakest Jul (average -5.29%), based on 5 years of daily data (2022–2026).
How many years of seasonality does this cover?
5 years (2022–2026), computed from 965 daily bars in the Closelook data lake.