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 — 1996

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1996-12-31$18.00$18.0064,600
1996-12-30$18.06$18.0638,400
1996-12-27$18.00$18.0051,800
1996-12-26$18.06$18.0676,300
1996-12-24$18.25$18.2530,400
1996-12-23$18.75$18.7541,200
1996-12-20$18.75$18.75158,700
1996-12-19$18.63$18.6397,200
1996-12-18$18.63$18.63310,000
1996-12-17$17.63$17.63152,400
1996-12-16$17.63$17.63111,700
1996-12-13$18.00$18.00124,300
1996-12-12$17.88$17.88311,100
1996-12-11$18.13$18.13269,700
1996-12-10$18.13$18.13221,300
1996-12-09$18.25$18.25533,000
1996-12-06$17.75$17.75236,600
1996-12-05$18.38$18.3897,900
1996-12-04$18.38$18.38331,000
1996-12-03$18.38$18.381,405,000
1996-12-02$16.75$16.75348,500
1996-11-29$16.38$16.3880,000
1996-11-27$16.44$16.44100,700
1996-11-26$16.75$16.7566,800
1996-11-25$17.25$17.2562,200
1996-11-22$17.38$17.38128,200
1996-11-21$16.75$16.75187,500
1996-11-20$18.00$18.00399,200
1996-11-19$15.63$15.6387,700
1996-11-18$16.13$16.1362,300
1996-11-15$16.75$16.75117,100
1996-11-14$17.00$17.0080,500
1996-11-13$17.38$17.38121,100
1996-11-12$17.38$17.38104,200
1996-11-11$16.75$16.75289,200
1996-11-08$15.88$15.8845,100
1996-11-07$16.00$16.00112,500
1996-11-06$15.50$15.5081,400
1996-11-05$15.50$15.5037,400
1996-11-04$15.63$15.6379,900
1996-11-01$15.50$15.50118,100
1996-10-31$16.25$16.25150,200
1996-10-30$15.50$15.5066,800
1996-10-29$15.50$15.50119,100
1996-10-28$16.00$16.0078,400
1996-10-25$16.88$16.8850,900
1996-10-24$17.13$17.13100,800
1996-10-23$17.06$17.06270,500
1996-10-22$16.63$16.63364,700
1996-10-21$17.50$17.50283,900
1996-10-18$19.00$19.00308,900
1996-10-17$19.75$19.75256,300
1996-10-16$19.75$19.75349,200
1996-10-15$19.50$19.50630,500
1996-10-14$20.00$20.00384,200
1996-10-11$18.75$18.75177,700
1996-10-10$18.50$18.50324,900
1996-10-09$17.88$17.88108,200
1996-10-08$17.63$17.63175,700
1996-10-07$18.25$18.25152,400
1996-10-04$18.25$18.25547,800
1996-10-03$17.13$17.13183,300
1996-10-02$17.13$17.13233,000
1996-10-01$16.75$16.7573,500
1996-09-30$16.13$16.13113,800
1996-09-27$15.63$15.63244,000
1996-09-26$16.50$16.50184,700
1996-09-25$16.88$16.88118,200
1996-09-24$16.63$16.63275,300
1996-09-23$16.75$16.75305,500
1996-09-20$15.88$15.8887,500
1996-09-19$15.88$15.88133,800
1996-09-18$15.50$15.50279,000
1996-09-17$15.88$15.88753,100
1996-09-16$15.25$15.25139,800
1996-09-13$15.50$15.50248,000
1996-09-12$14.88$14.88107,000
1996-09-11$14.75$14.75100,900
1996-09-10$14.88$14.88197,700
1996-09-09$14.38$14.38135,500
1996-09-06$14.13$14.13118,100
1996-09-05$13.63$13.63180,600
1996-09-04$13.25$13.2569,900
1996-09-03$13.50$13.50106,300
1996-08-30$13.13$13.1392,400
1996-08-29$13.13$13.1382,300
1996-08-28$13.06$13.06127,200
1996-08-27$13.13$13.13186,200
1996-08-26$13.36$13.36160,900
1996-08-23$13.63$13.63172,000
1996-08-22$13.75$13.75290,400
1996-08-21$13.50$13.50108,900
1996-08-20$13.52$13.5249,300
1996-08-19$13.52$13.52182,500
1996-08-16$14.25$14.2561,300
1996-08-15$14.38$14.38298,900
1996-08-14$13.69$13.69146,200
1996-08-13$13.88$13.88292,000
1996-08-12$14.75$14.7589,200
1996-08-09$15.38$15.3864,600
1996-08-08$15.63$15.63112,200
1996-08-07$15.00$15.0057,000
1996-08-06$15.13$15.13104,100
1996-08-05$15.00$15.0081,500
1996-08-02$14.94$14.94215,200
1996-08-01$16.00$16.00527,300
1996-07-31$14.50$14.50143,600
1996-07-30$13.75$13.7579,700
1996-07-29$13.50$13.50156,900
1996-07-26$14.88$14.88128,600
1996-07-25$14.88$14.88339,400
1996-07-24$13.06$13.06565,100
1996-07-23$13.13$13.13416,300
1996-07-22$14.25$14.25676,600
1996-07-19$16.63$16.63283,600
1996-07-18$17.13$17.13441,100
1996-07-17$15.63$15.63555,500
1996-07-16$13.25$13.25619,700
1996-07-15$12.75$12.751,044,900
1996-07-12$15.25$15.25192,500
1996-07-11$14.75$14.75346,300
1996-07-10$15.50$15.50675,600
1996-07-09$16.25$16.25673,800
1996-07-08$17.50$17.50144,400
1996-07-05$18.25$18.2559,800
1996-07-03$18.63$18.6368,700
1996-07-02$18.75$18.75172,800
1996-07-01$18.63$18.63250,600
1996-06-28$18.75$18.75313,300
1996-06-27$18.06$18.06326,600
1996-06-26$18.38$18.38210,000
1996-06-25$19.25$19.25254,800
1996-06-24$19.38$19.38339,400
1996-06-21$19.88$19.88418,600
1996-06-20$18.00$18.00439,500
1996-06-19$19.63$19.63294,200
1996-06-18$20.50$20.50251,000
1996-06-17$21.13$21.13210,500
1996-06-14$21.00$21.00348,600
1996-06-13$21.75$21.75364,800
1996-06-12$22.63$22.63410,700
1996-06-11$23.50$23.501,112,300
1996-06-10$23.63$23.631,029,700
1996-06-07$20.50$20.50667,200
1996-06-06$19.50$19.50255,900
1996-06-05$19.75$19.751,179,500
1996-06-04$21.13$21.131,134,100
1996-06-03$18.25$18.25216,000
1996-05-31$18.13$18.13167,100
1996-05-30$18.13$18.13204,400
1996-05-29$17.63$17.63419,000
1996-05-28$18.00$18.00660,700
1996-05-24$18.25$18.25546,300
1996-05-23$19.50$19.50287,700
1996-05-22$18.63$18.63201,700
1996-05-21$19.06$19.06442,500
1996-05-20$18.63$18.63331,300
1996-05-17$18.38$18.38384,300
1996-05-16$18.50$18.50465,400
1996-05-15$18.00$18.00469,900
1996-05-14$18.63$18.63791,400
1996-05-13$19.75$19.751,526,500
1996-05-10$18.50$18.50792,900
1996-05-09$17.50$17.50460,500
1996-05-08$16.75$16.75706,600
1996-05-07$16.75$16.751,409,700
1996-05-06$16.25$16.251,680,700
1996-05-03$14.00$14.00465,400
1996-05-02$13.63$13.63642,000
1996-05-01$13.00$13.00243,600
1996-04-30$12.75$12.7599,400
1996-04-29$12.50$12.50142,500
1996-04-26$12.38$12.38108,200
1996-04-25$12.00$12.0038,100
1996-04-24$12.25$12.25123,700
1996-04-23$12.63$12.63328,800
1996-04-22$11.63$11.63111,400
1996-04-19$11.38$11.38122,900
1996-04-18$11.63$11.63248,000
1996-04-17$10.63$10.6397,500
1996-04-16$10.94$10.94109,900
1996-04-15$11.00$11.00142,800
1996-04-12$10.50$10.50212,000
1996-04-11$10.50$10.50265,300
1996-04-10$11.00$11.00200,400
1996-04-09$10.75$10.75175,600
1996-04-08$11.38$11.38126,300
1996-04-04$11.88$11.8850,700
1996-04-03$12.13$12.1375,900
1996-04-02$11.88$11.8886,100
1996-04-01$12.00$12.00202,700
1996-03-29$11.63$11.6339,200
1996-03-28$11.50$11.5061,100
1996-03-27$11.56$11.5693,800
1996-03-26$11.38$11.38258,000
1996-03-25$12.50$12.5064,600
1996-03-22$13.25$13.2531,700
1996-03-21$13.25$13.25184,100
1996-03-20$12.81$12.81224,600
1996-03-19$12.50$12.50151,500
1996-03-18$12.13$12.13205,800
1996-03-15$12.88$12.88103,000
1996-03-14$12.88$12.88311,300
1996-03-13$12.00$12.00153,200
1996-03-12$11.63$11.6382,400
1996-03-11$11.56$11.56188,800
1996-03-08$11.25$11.25145,300
1996-03-07$12.13$12.1370,000
1996-03-06$12.50$12.5021,300
1996-03-05$12.50$12.5088,400
1996-03-04$12.81$12.8123,200
1996-03-01$12.50$12.5091,100
1996-02-29$12.44$12.44207,100
1996-02-28$12.38$12.38168,800
1996-02-27$12.25$12.25227,700
1996-02-26$11.75$11.75123,400
1996-02-23$11.88$11.88158,700
1996-02-22$12.25$12.25231,400
1996-02-21$12.50$12.50471,600
1996-02-20$11.63$11.63379,900
1996-02-16$12.38$12.3836,900
1996-02-15$12.63$12.63136,600
1996-02-14$12.38$12.38283,700
1996-02-13$12.75$12.75113,100
1996-02-12$13.25$13.25178,200
1996-02-09$13.13$13.13193,800
1996-02-08$13.13$13.1357,600
1996-02-07$13.38$13.3891,200
1996-02-06$13.50$13.50135,200
1996-02-05$13.75$13.75106,100
1996-02-02$13.63$13.63102,900
1996-02-01$13.94$13.94170,300
1996-01-31$14.38$14.38113,500
1996-01-30$14.13$14.13208,500
1996-01-29$14.81$14.81232,700
1996-01-26$14.50$14.50103,200
1996-01-25$14.50$14.5081,000
1996-01-24$14.25$14.25121,000
1996-01-23$14.25$14.25560,600
1996-01-22$13.63$13.6354,400
1996-01-19$14.00$14.00267,800
1996-01-18$14.25$14.25431,000
1996-01-17$13.75$13.75284,400
1996-01-16$13.00$13.0036,400
1996-01-15$12.88$12.8881,200
1996-01-12$13.25$13.2544,800
1996-01-11$13.63$13.63151,600
1996-01-10$13.25$13.25136,600
1996-01-09$13.63$13.63547,500
1996-01-08$13.13$13.1392,300
1996-01-05$12.63$12.6357,500
1996-01-04$12.25$12.25174,900
1996-01-03$12.25$12.25140,200
1996-01-02$13.13$13.13113,400