NASDAQ:IONS | Historical Stock Price | IONIS PHARMACEUTICALS INC

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
1991-05-17 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$2.77$5.54$11.08$22.15$44.28$88.501991-05-172026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2007

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2007-12-31$15.75$15.751,164,700
2007-12-28$16.24$16.24611,600
2007-12-27$16.10$16.10648,300
2007-12-26$16.59$16.59838,600
2007-12-24$16.51$16.51332,600
2007-12-21$16.26$16.261,558,900
2007-12-20$16.08$16.082,640,900
2007-12-19$15.81$15.81961,000
2007-12-18$15.65$15.651,810,500
2007-12-17$15.60$15.602,654,600
2007-12-14$16.47$16.47932,800
2007-12-13$17.04$17.041,132,900
2007-12-12$16.95$16.951,171,200
2007-12-11$16.90$16.901,405,700
2007-12-10$17.36$17.36897,700
2007-12-07$16.80$16.801,078,500
2007-12-06$17.33$17.331,233,700
2007-12-05$17.18$17.181,079,800
2007-12-04$17.02$17.022,955,900
2007-12-03$17.68$17.682,712,700
2007-11-30$17.69$17.693,474,900
2007-11-29$17.53$17.532,731,000
2007-11-28$17.48$17.484,428,700
2007-11-27$17.56$17.562,197,000
2007-11-26$17.06$17.062,343,800
2007-11-23$16.94$16.94441,400
2007-11-21$16.50$16.501,473,800
2007-11-20$17.08$17.083,338,500
2007-11-19$16.52$16.522,080,100
2007-11-16$16.75$16.752,942,800
2007-11-15$16.44$16.442,460,600
2007-11-14$16.08$16.082,400,900
2007-11-13$16.06$16.063,498,800
2007-11-12$15.61$15.611,436,300
2007-11-09$15.40$15.401,347,500
2007-11-08$15.84$15.842,484,400
2007-11-07$16.38$16.38999,300
2007-11-06$17.21$17.21986,700
2007-11-05$16.57$16.57959,200
2007-11-02$16.87$16.871,171,100
2007-11-01$16.77$16.771,586,200
2007-10-31$17.62$17.622,361,700
2007-10-30$16.66$16.661,502,100
2007-10-29$17.19$17.19836,800
2007-10-26$17.38$17.38855,500
2007-10-25$17.34$17.341,581,200
2007-10-24$17.70$17.701,441,000
2007-10-23$17.46$17.461,052,900
2007-10-22$16.90$16.901,408,500
2007-10-19$16.89$16.891,545,600
2007-10-18$17.61$17.612,108,100
2007-10-17$17.54$17.541,579,900
2007-10-16$17.64$17.642,418,100
2007-10-15$17.37$17.371,993,600
2007-10-12$16.83$16.832,315,100
2007-10-11$16.48$16.483,141,600
2007-10-10$15.86$15.862,816,700
2007-10-09$16.39$16.395,795,300
2007-10-08$16.64$16.643,550,000
2007-10-05$16.00$16.001,519,400
2007-10-04$15.49$15.491,759,300
2007-10-03$15.75$15.751,771,000
2007-10-02$15.49$15.491,538,900
2007-10-01$15.26$15.261,513,100
2007-09-28$14.97$14.971,689,300
2007-09-27$15.35$15.351,586,600
2007-09-26$15.10$15.101,235,800
2007-09-25$14.77$14.771,779,300
2007-09-24$14.55$14.551,496,900
2007-09-21$14.91$14.912,983,800
2007-09-20$14.47$14.471,333,900
2007-09-19$14.61$14.612,056,000
2007-09-18$14.38$14.382,284,200
2007-09-17$14.00$14.002,662,000
2007-09-14$14.13$14.134,519,400
2007-09-13$13.30$13.305,194,900
2007-09-12$12.76$12.761,079,200
2007-09-11$12.90$12.902,115,300
2007-09-10$12.74$12.741,232,200
2007-09-07$12.74$12.741,387,900
2007-09-06$12.74$12.74792,200
2007-09-05$12.47$12.471,114,300
2007-09-04$12.73$12.731,089,200
2007-08-31$12.34$12.34987,200
2007-08-30$12.17$12.171,024,900
2007-08-29$12.27$12.271,527,500
2007-08-28$11.96$11.96844,600
2007-08-27$12.47$12.47586,800
2007-08-24$12.67$12.67781,400
2007-08-23$12.58$12.581,800,600
2007-08-22$12.72$12.721,357,500
2007-08-21$12.86$12.861,983,400
2007-08-20$12.24$12.242,349,300
2007-08-17$11.90$11.901,725,100
2007-08-16$11.65$11.651,658,900
2007-08-15$11.35$11.351,740,600
2007-08-14$11.42$11.421,258,400
2007-08-13$11.58$11.581,672,800
2007-08-10$11.08$11.082,099,300
2007-08-09$11.76$11.762,471,400
2007-08-08$11.37$11.372,914,200
2007-08-07$10.69$10.691,359,700
2007-08-06$10.33$10.331,477,500
2007-08-03$9.74$9.741,395,400
2007-08-02$10.08$10.081,417,800
2007-08-01$10.23$10.231,398,600
2007-07-31$10.41$10.411,737,300
2007-07-30$10.14$10.141,713,900
2007-07-27$9.99$9.991,551,600
2007-07-26$10.06$10.061,349,500
2007-07-25$10.44$10.441,218,600
2007-07-24$10.43$10.431,355,100
2007-07-23$10.85$10.851,162,000
2007-07-20$11.04$11.041,668,500
2007-07-19$11.52$11.522,113,400
2007-07-18$10.94$10.941,292,600
2007-07-17$10.91$10.911,389,500
2007-07-16$11.13$11.131,745,400
2007-07-13$11.77$11.771,306,500
2007-07-12$11.96$11.962,166,800
2007-07-11$11.45$11.452,150,300
2007-07-10$11.64$11.645,214,100
2007-07-09$11.80$11.805,518,500
2007-07-06$10.07$10.07819,200
2007-07-05$10.05$10.051,540,700
2007-07-03$10.00$10.00763,700
2007-07-02$9.77$9.77564,800
2007-06-29$9.68$9.681,078,600
2007-06-28$9.81$9.811,654,800
2007-06-27$9.65$9.651,386,200
2007-06-26$9.14$9.14771,900
2007-06-25$9.19$9.191,478,600
2007-06-22$9.53$9.532,308,100
2007-06-21$9.61$9.611,684,600
2007-06-20$9.33$9.331,502,900
2007-06-19$9.13$9.132,703,600
2007-06-18$8.98$8.981,519,400
2007-06-15$9.31$9.312,037,700
2007-06-14$8.95$8.951,070,800
2007-06-13$8.99$8.991,043,300
2007-06-12$8.86$8.861,414,800
2007-06-11$9.01$9.011,475,900
2007-06-08$9.16$9.161,506,900
2007-06-07$9.16$9.161,542,300
2007-06-06$9.54$9.541,229,800
2007-06-05$9.67$9.671,404,400
2007-06-04$9.88$9.88994,700
2007-06-01$9.99$9.99717,800
2007-05-31$10.06$10.061,397,800
2007-05-30$10.14$10.141,668,200
2007-05-29$10.00$10.00810,300
2007-05-25$9.94$9.941,072,400
2007-05-24$9.70$9.701,009,200
2007-05-23$10.04$10.041,389,600
2007-05-22$9.93$9.931,019,600
2007-05-21$10.07$10.071,224,200
2007-05-18$9.94$9.941,343,700
2007-05-17$9.89$9.891,647,300
2007-05-16$9.86$9.861,436,900
2007-05-15$9.60$9.601,435,700
2007-05-14$9.65$9.651,989,900
2007-05-11$9.88$9.881,290,300
2007-05-10$9.85$9.851,401,900
2007-05-09$10.24$10.242,750,400
2007-05-08$9.91$9.91853,200
2007-05-07$9.95$9.95621,700
2007-05-04$10.00$10.00914,600
2007-05-03$9.91$9.91712,400
2007-05-02$10.22$10.221,415,600
2007-05-01$9.92$9.921,302,700
2007-04-30$10.23$10.231,018,700
2007-04-27$10.19$10.19921,000
2007-04-26$10.30$10.301,302,500
2007-04-25$10.25$10.253,036,000
2007-04-24$9.92$9.921,337,200
2007-04-23$9.60$9.60915,600
2007-04-20$9.48$9.48898,100
2007-04-19$9.66$9.66815,200
2007-04-18$9.66$9.66811,300
2007-04-17$9.67$9.67812,800
2007-04-16$9.88$9.88760,200
2007-04-13$9.75$9.75533,700
2007-04-12$9.79$9.79810,100
2007-04-11$9.61$9.611,028,800
2007-04-10$9.71$9.711,358,300
2007-04-09$10.11$10.112,053,900
2007-04-05$9.67$9.671,432,200
2007-04-04$9.68$9.681,579,300
2007-04-03$9.40$9.401,487,600
2007-04-02$9.22$9.221,781,000
2007-03-30$9.27$9.273,405,700
2007-03-29$9.43$9.431,821,000
2007-03-28$9.61$9.611,609,000
2007-03-27$9.62$9.623,113,300
2007-03-26$9.86$9.865,815,000
2007-03-23$10.14$10.142,717,200
2007-03-22$10.25$10.253,599,100
2007-03-21$9.59$9.591,720,800
2007-03-20$8.97$8.97949,500
2007-03-19$9.07$9.071,001,700
2007-03-16$8.96$8.961,122,000
2007-03-15$9.12$9.121,093,100
2007-03-14$8.95$8.951,503,900
2007-03-13$9.09$9.091,768,700
2007-03-12$9.38$9.381,230,200
2007-03-09$9.46$9.461,643,900
2007-03-08$9.82$9.823,381,100
2007-03-07$9.36$9.362,547,600
2007-03-06$9.01$9.011,855,500
2007-03-05$8.37$8.372,437,500
2007-03-02$8.86$8.861,917,100
2007-03-01$9.14$9.142,790,300
2007-02-28$9.12$9.122,525,600
2007-02-27$9.00$9.002,385,100
2007-02-26$9.48$9.481,495,100
2007-02-23$9.71$9.711,102,900
2007-02-22$9.89$9.891,116,600
2007-02-21$9.91$9.911,160,200
2007-02-20$10.10$10.101,252,900
2007-02-16$10.07$10.07854,400
2007-02-15$10.24$10.241,211,900
2007-02-14$10.03$10.03784,000
2007-02-13$10.01$10.011,501,300
2007-02-12$10.07$10.071,086,300
2007-02-09$10.15$10.151,620,800
2007-02-08$10.55$10.551,649,300
2007-02-07$10.36$10.361,021,000
2007-02-06$10.38$10.381,561,000
2007-02-05$10.50$10.50785,300
2007-02-02$10.51$10.51812,600
2007-02-01$10.77$10.771,422,500
2007-01-31$10.39$10.391,169,800
2007-01-30$10.30$10.301,716,800
2007-01-29$10.77$10.771,594,400
2007-01-26$10.43$10.43828,400
2007-01-25$10.46$10.46748,700
2007-01-24$10.74$10.741,494,300
2007-01-23$10.40$10.401,700,100
2007-01-22$10.67$10.671,299,300
2007-01-19$11.04$11.042,610,100
2007-01-18$10.99$10.992,938,200
2007-01-17$11.25$11.256,428,700
2007-01-16$12.08$12.081,207,700
2007-01-12$12.37$12.372,202,100
2007-01-11$11.95$11.951,158,000
2007-01-10$11.33$11.33645,700
2007-01-09$11.21$11.21676,300
2007-01-08$11.16$11.16628,700
2007-01-05$11.32$11.321,012,400
2007-01-04$11.30$11.30762,200
2007-01-03$10.93$10.931,444,300