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 — 2002

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2002-12-31$6.59$6.59591,500
2002-12-30$6.50$6.50375,700
2002-12-27$6.70$6.70302,600
2002-12-26$6.88$6.88347,000
2002-12-24$6.83$6.83200,600
2002-12-23$6.91$6.91599,200
2002-12-20$6.50$6.50635,200
2002-12-19$6.49$6.49656,200
2002-12-18$6.62$6.62863,600
2002-12-17$6.90$6.90608,200
2002-12-16$6.95$6.95795,500
2002-12-13$6.91$6.91574,100
2002-12-12$6.97$6.97587,500
2002-12-11$6.90$6.90932,500
2002-12-10$6.76$6.76841,000
2002-12-09$7.03$7.033,628,500
2002-12-06$6.19$6.197,587,400
2002-12-05$7.90$7.90292,500
2002-12-04$8.07$8.07483,300
2002-12-03$8.16$8.161,522,500
2002-12-02$8.02$8.022,267,700
2002-11-29$8.63$8.63529,200
2002-11-27$8.81$8.81881,700
2002-11-26$9.10$9.102,272,200
2002-11-25$9.75$9.75812,200
2002-11-22$9.61$9.61539,200
2002-11-21$9.68$9.68528,900
2002-11-20$9.82$9.82436,900
2002-11-19$9.49$9.49247,300
2002-11-18$9.67$9.67358,400
2002-11-15$9.85$9.85201,600
2002-11-14$9.90$9.90521,000
2002-11-13$9.97$9.97415,300
2002-11-12$10.24$10.24803,000
2002-11-11$10.38$10.38431,100
2002-11-08$10.38$10.38474,900
2002-11-07$10.20$10.201,397,300
2002-11-06$10.47$10.47473,400
2002-11-05$10.42$10.42435,200
2002-11-04$10.00$10.00638,500
2002-11-01$9.95$9.95336,100
2002-10-31$9.76$9.76378,200
2002-10-30$10.10$10.10519,900
2002-10-29$9.72$9.72290,500
2002-10-28$9.66$9.66538,100
2002-10-25$9.46$9.46443,500
2002-10-24$9.31$9.31451,500
2002-10-23$9.29$9.29359,400
2002-10-22$8.90$8.90394,000
2002-10-21$8.90$8.901,316,000
2002-10-18$9.00$9.00294,200
2002-10-17$9.35$9.35296,700
2002-10-16$9.02$9.02285,300
2002-10-15$8.73$8.73584,200
2002-10-14$8.85$8.85438,100
2002-10-11$8.69$8.69338,800
2002-10-10$8.53$8.53685,700
2002-10-09$8.18$8.18538,100
2002-10-08$8.97$8.97875,500
2002-10-07$9.02$9.02361,700
2002-10-04$9.03$9.03752,400
2002-10-03$10.00$10.00455,000
2002-10-02$10.16$10.161,215,400
2002-10-01$10.20$10.201,993,000
2002-09-30$9.86$9.86989,400
2002-09-27$9.15$9.15306,600
2002-09-26$9.06$9.06545,300
2002-09-25$8.75$8.75492,100
2002-09-24$8.33$8.33441,400
2002-09-23$8.48$8.48559,100
2002-09-20$8.64$8.64947,100
2002-09-19$8.00$8.00538,600
2002-09-18$8.28$8.28712,000
2002-09-17$8.58$8.58508,600
2002-09-16$9.25$9.25302,500
2002-09-13$8.97$8.97891,900
2002-09-12$9.16$9.16362,600
2002-09-11$9.10$9.10480,300
2002-09-10$9.02$9.02622,200
2002-09-09$9.65$9.65590,400
2002-09-06$9.45$9.45368,900
2002-09-05$8.98$8.98499,000
2002-09-04$9.82$9.82584,600
2002-09-03$9.01$9.01962,400
2002-08-30$10.12$10.12484,400
2002-08-29$11.14$11.14301,800
2002-08-28$10.40$10.40444,700
2002-08-27$10.50$10.50384,600
2002-08-26$11.29$11.29674,900
2002-08-23$10.58$10.58429,300
2002-08-22$11.09$11.09493,000
2002-08-21$11.57$11.57432,300
2002-08-20$11.11$11.11383,000
2002-08-19$11.00$11.00686,700
2002-08-16$11.25$11.25517,200
2002-08-15$11.00$11.00828,800
2002-08-14$10.88$10.88792,200
2002-08-13$10.00$10.00667,200
2002-08-12$9.80$9.80393,400
2002-08-09$9.74$9.74600,100
2002-08-08$9.22$9.221,156,900
2002-08-07$8.76$8.76238,100
2002-08-06$8.75$8.75383,900
2002-08-05$7.87$7.87504,400
2002-08-02$8.06$8.06464,500
2002-08-01$8.62$8.62236,800
2002-07-31$8.85$8.851,695,900
2002-07-30$8.51$8.51403,400
2002-07-29$8.42$8.42483,400
2002-07-26$8.00$8.00365,300
2002-07-25$8.20$8.20553,900
2002-07-24$7.85$7.85349,700
2002-07-23$7.25$7.25283,700
2002-07-22$7.78$7.78567,300
2002-07-19$7.45$7.45274,100
2002-07-18$8.25$8.25179,100
2002-07-17$8.34$8.34446,300
2002-07-16$8.17$8.17327,900
2002-07-15$7.75$7.75455,800
2002-07-12$7.10$7.10486,600
2002-07-11$6.78$6.78365,500
2002-07-10$6.87$6.87335,400
2002-07-09$7.30$7.30278,600
2002-07-08$7.07$7.07421,000
2002-07-05$7.81$7.81205,700
2002-07-03$7.50$7.50539,100
2002-07-02$7.78$7.78572,800
2002-07-01$8.15$8.15311,700
2002-06-28$9.51$9.51646,800
2002-06-27$8.88$8.88299,500
2002-06-26$8.49$8.49425,200
2002-06-25$8.32$8.32510,800
2002-06-24$8.03$8.03412,900
2002-06-21$7.99$7.99415,900
2002-06-20$8.00$8.00293,200
2002-06-19$7.82$7.82214,600
2002-06-18$8.30$8.30921,100
2002-06-17$8.00$8.00352,100
2002-06-14$7.41$7.41561,300
2002-06-13$7.05$7.05463,600
2002-06-12$7.50$7.50568,200
2002-06-11$7.80$7.80575,900
2002-06-10$8.20$8.20559,800
2002-06-07$8.00$8.00402,000
2002-06-06$7.86$7.86448,300
2002-06-05$8.15$8.15611,400
2002-06-04$8.04$8.04824,800
2002-06-03$8.38$8.38534,300
2002-05-31$9.40$9.40319,600
2002-05-30$9.57$9.57488,700
2002-05-29$9.60$9.60353,700
2002-05-28$9.93$9.93284,900
2002-05-24$9.50$9.50779,100
2002-05-23$10.30$10.30627,300
2002-05-22$9.79$9.79895,900
2002-05-21$9.44$9.441,155,100
2002-05-20$9.84$9.84882,500
2002-05-17$10.22$10.22503,200
2002-05-16$10.14$10.14965,500
2002-05-15$10.90$10.90575,100
2002-05-14$11.05$11.051,651,900
2002-05-13$10.55$10.55692,400
2002-05-10$10.29$10.291,156,200
2002-05-09$11.38$11.38324,400
2002-05-08$11.55$11.55547,800
2002-05-07$10.97$10.97538,500
2002-05-06$11.02$11.02313,800
2002-05-03$11.88$11.88553,800
2002-05-02$12.05$12.05392,900
2002-05-01$12.31$12.31688,600
2002-04-30$12.66$12.661,362,600
2002-04-29$12.00$12.001,499,300
2002-04-26$12.14$12.143,380,000
2002-04-25$13.30$13.301,606,900
2002-04-24$14.29$14.291,064,400
2002-04-23$15.08$15.081,689,800
2002-04-22$16.69$16.69304,300
2002-04-19$17.51$17.51372,900
2002-04-18$18.00$18.00758,100
2002-04-17$16.69$16.69420,000
2002-04-16$16.15$16.15359,400
2002-04-15$15.20$15.20392,100
2002-04-12$15.52$15.52499,200
2002-04-11$15.28$15.28663,800
2002-04-10$15.30$15.30609,800
2002-04-09$15.11$15.11417,100
2002-04-08$15.50$15.50566,600
2002-04-05$15.90$15.90427,000
2002-04-04$15.56$15.56466,700
2002-04-03$16.36$16.36290,700
2002-04-02$15.41$15.41262,900
2002-04-01$16.95$16.95200,300
2002-03-28$16.08$16.08443,000
2002-03-27$16.51$16.51319,000
2002-03-26$16.88$16.88318,400
2002-03-25$16.50$16.50384,700
2002-03-22$16.80$16.80199,800
2002-03-21$17.35$17.35248,800
2002-03-20$16.38$16.38249,700
2002-03-19$16.58$16.58258,200
2002-03-18$16.55$16.55260,100
2002-03-15$16.90$16.90381,900
2002-03-14$16.00$16.00345,100
2002-03-13$16.13$16.13221,900
2002-03-12$15.98$15.98168,500
2002-03-11$16.10$16.10259,500
2002-03-08$16.50$16.50297,000
2002-03-07$16.26$16.26607,700
2002-03-06$17.27$17.27498,700
2002-03-05$15.67$15.67441,000
2002-03-04$16.10$16.10521,600
2002-03-01$15.61$15.61464,000
2002-02-28$14.67$14.67487,200
2002-02-27$15.06$15.061,193,000
2002-02-26$15.03$15.031,100,100
2002-02-25$15.40$15.401,903,300
2002-02-22$17.95$17.95458,300
2002-02-21$16.90$16.90198,900
2002-02-20$17.67$17.67900,800
2002-02-19$16.25$16.25739,300
2002-02-15$17.63$17.63440,300
2002-02-14$17.88$17.881,028,200
2002-02-13$18.15$18.15613,200
2002-02-12$18.00$18.00603,500
2002-02-11$16.91$16.91298,900
2002-02-08$17.00$17.00298,100
2002-02-07$16.18$16.18712,600
2002-02-06$16.25$16.25440,600
2002-02-05$16.78$16.78389,100
2002-02-04$16.11$16.11312,400
2002-02-01$17.43$17.43409,700
2002-01-31$17.40$17.40993,300
2002-01-30$16.23$16.231,713,200
2002-01-29$16.13$16.13469,100
2002-01-28$16.25$16.25529,300
2002-01-25$16.94$16.94267,800
2002-01-24$17.05$17.05341,400
2002-01-23$17.04$17.04548,400
2002-01-22$17.15$17.15699,400
2002-01-18$17.75$17.75605,500
2002-01-17$18.08$18.08464,900
2002-01-16$17.91$17.91399,700
2002-01-15$18.68$18.68306,000
2002-01-14$18.04$18.04496,900
2002-01-11$18.50$18.50466,800
2002-01-10$18.68$18.68669,100
2002-01-09$19.39$19.39512,400
2002-01-08$19.99$19.99936,400
2002-01-07$18.70$18.70718,200
2002-01-04$20.00$20.001,944,300
2002-01-03$21.23$21.23503,600
2002-01-02$21.05$21.05614,700