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 — 1992

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1992-12-31$9.75$9.7522,800
1992-12-30$9.75$9.7529,000
1992-12-29$9.50$9.5059,100
1992-12-28$8.88$8.8847,300
1992-12-24$9.25$9.2513,000
1992-12-23$9.25$9.2517,700
1992-12-22$9.00$9.0041,500
1992-12-21$9.25$9.2588,200
1992-12-18$9.25$9.2514,900
1992-12-17$9.75$9.7514,900
1992-12-16$9.25$9.2524,300
1992-12-15$9.50$9.50146,900
1992-12-14$10.25$10.2532,900
1992-12-11$10.50$10.509,300
1992-12-10$10.75$10.7528,000
1992-12-09$11.00$11.0026,400
1992-12-08$11.00$11.00103,800
1992-12-07$10.63$10.6361,500
1992-12-04$10.50$10.5015,500
1992-12-03$11.00$11.0020,000
1992-12-02$10.50$10.5043,700
1992-12-01$11.00$11.0070,200
1992-11-30$11.50$11.5029,400
1992-11-27$11.13$11.1364,300
1992-11-25$11.00$11.0085,500
1992-11-24$10.75$10.7545,500
1992-11-23$11.00$11.0018,800
1992-11-20$11.00$11.0029,600
1992-11-19$10.75$10.7581,000
1992-11-18$10.88$10.88182,000
1992-11-17$11.88$11.8884,200
1992-11-16$12.00$12.00129,600
1992-11-13$12.00$12.00434,100
1992-11-12$13.50$13.50520,400
1992-11-11$13.50$13.501,225,900
1992-11-10$11.75$11.75501,800
1992-11-09$10.13$10.13226,900
1992-11-06$9.00$9.00219,900
1992-11-05$7.63$7.6354,000
1992-11-04$7.50$7.50104,100
1992-11-03$7.50$7.5079,900
1992-11-02$6.88$6.88187,700
1992-10-30$6.00$6.0082,100
1992-10-29$6.00$6.007,800
1992-10-28$6.50$6.505,800
1992-10-27$6.25$6.2516,300
1992-10-26$6.50$6.5025,000
1992-10-23$6.75$6.7523,700
1992-10-22$6.50$6.5044,400
1992-10-21$6.25$6.2537,200
1992-10-20$6.25$6.2561,200
1992-10-19$5.75$5.7562,000
1992-10-16$5.50$5.5050,300
1992-10-15$5.50$5.5064,300
1992-10-14$5.25$5.2538,300
1992-10-13$5.50$5.50120,900
1992-10-12$5.25$5.2585,100
1992-10-09$5.50$5.5056,600
1992-10-08$5.75$5.7523,500
1992-10-07$5.88$5.889,500
1992-10-06$6.00$6.0025,100
1992-10-05$6.00$6.008,900
1992-10-02$6.25$6.2544,800
1992-10-01$6.13$6.137,000
1992-09-30$6.00$6.0027,500
1992-09-29$6.75$6.7514,100
1992-09-28$6.75$6.755,500
1992-09-25$6.50$6.5011,400
1992-09-24$7.00$7.0026,800
1992-09-23$6.75$6.759,600
1992-09-22$6.75$6.7520,500
1992-09-21$7.00$7.0022,300
1992-09-18$7.00$7.0021,800
1992-09-17$7.00$7.004,800
1992-09-16$7.00$7.0013,300
1992-09-15$7.00$7.0013,900
1992-09-14$7.00$7.001,500
1992-09-11$6.75$6.759,300
1992-09-10$7.25$7.252,000
1992-09-09$6.75$6.754,000
1992-09-08$6.75$6.7540,700
1992-09-04$7.00$7.0015,800
1992-09-03$7.25$7.256,600
1992-09-02$6.75$6.753,400
1992-09-01$7.25$7.2514,200
1992-08-31$7.25$7.2516,200
1992-08-28$6.75$6.754,900
1992-08-27$6.38$6.3822,900
1992-08-26$6.00$6.007,000
1992-08-25$6.00$6.0016,200
1992-08-24$6.00$6.0025,600
1992-08-21$6.50$6.507,000
1992-08-20$6.75$6.758,400
1992-08-19$6.75$6.7557,700
1992-08-18$7.00$7.0013,400
1992-08-17$7.25$7.2518,400
1992-08-14$7.50$7.5012,300
1992-08-13$7.25$7.2517,500
1992-08-12$7.00$7.0015,900
1992-08-11$7.00$7.0046,100
1992-08-10$7.00$7.0013,700
1992-08-07$7.00$7.007,500
1992-08-06$7.50$7.505,100
1992-08-05$7.25$7.2530,100
1992-08-04$7.25$7.2510,700
1992-08-03$7.63$7.636,600
1992-07-31$7.75$7.7513,200
1992-07-30$7.88$7.8815,300
1992-07-29$7.75$7.754,900
1992-07-28$8.00$8.00800
1992-07-27$7.50$7.508,500
1992-07-24$7.75$7.7519,300
1992-07-23$7.50$7.5011,300
1992-07-22$7.50$7.5068,900
1992-07-21$7.75$7.754,400
1992-07-20$8.00$8.0016,400
1992-07-17$8.25$8.254,100
1992-07-16$8.25$8.2511,600
1992-07-15$8.00$8.0011,300
1992-07-14$8.00$8.0020,600
1992-07-13$7.75$7.758,800
1992-07-10$7.75$7.758,700
1992-07-09$7.75$7.75900
1992-07-08$8.13$8.1345,300
1992-07-07$8.25$8.2538,400
1992-07-06$8.00$8.0034,600
1992-07-02$8.25$8.256,200
1992-07-01$7.75$7.755,400
1992-06-30$8.25$8.257,200
1992-06-29$8.00$8.0014,400
1992-06-26$8.25$8.2531,900
1992-06-25$8.25$8.2516,400
1992-06-24$7.75$7.7512,300
1992-06-23$8.00$8.002,200
1992-06-22$7.75$7.753,900
1992-06-19$8.00$8.0014,600
1992-06-18$7.75$7.759,000
1992-06-17$8.00$8.0012,100
1992-06-16$7.88$7.8823,300
1992-06-15$8.25$8.258,300
1992-06-12$7.88$7.884,500
1992-06-11$7.75$7.7562,200
1992-06-10$8.38$8.3837,300
1992-06-09$8.50$8.5038,900
1992-06-08$9.00$9.001,000
1992-06-05$8.50$8.503,900
1992-06-04$9.00$9.0055,500
1992-06-03$8.75$8.75156,500
1992-06-02$9.50$9.5033,400
1992-06-01$9.75$9.7511,600
1992-05-29$9.75$9.7518,100
1992-05-28$9.75$9.752,800
1992-05-27$9.75$9.759,300
1992-05-26$9.25$9.258,100
1992-05-22$9.25$9.2559,000
1992-05-21$8.75$8.7552,100
1992-05-20$9.25$9.2515,400
1992-05-19$9.25$9.253,300
1992-05-18$9.25$9.253,000
1992-05-15$9.63$9.6315,500
1992-05-14$9.75$9.7529,100
1992-05-13$9.75$9.7534,600
1992-05-12$10.25$10.2519,600
1992-05-11$10.00$10.0018,500
1992-05-08$10.50$10.5054,900
1992-05-07$10.50$10.5034,400
1992-05-06$10.50$10.5073,600
1992-05-05$10.50$10.5042,300
1992-05-04$10.50$10.5049,400
1992-05-01$9.88$9.88120,100
1992-04-30$9.25$9.2516,300
1992-04-29$9.25$9.2517,400
1992-04-28$8.75$8.7534,900
1992-04-27$8.88$8.8833,700
1992-04-24$9.25$9.2512,400
1992-04-23$8.75$8.7529,800
1992-04-22$9.75$9.7562,400
1992-04-21$9.75$9.75113,600
1992-04-20$8.50$8.5067,100
1992-04-16$9.25$9.25212,300
1992-04-15$9.75$9.7534,100
1992-04-14$10.25$10.2520,400
1992-04-13$10.25$10.2518,400
1992-04-10$10.00$10.0048,600
1992-04-09$9.75$9.7525,000
1992-04-08$9.50$9.5024,100
1992-04-07$10.25$10.2567,800
1992-04-06$10.25$10.2536,900
1992-04-03$10.25$10.25126,400
1992-04-02$9.75$9.7539,500
1992-04-01$10.13$10.1338,200
1992-03-31$11.00$11.0040,500
1992-03-30$10.75$10.7530,100
1992-03-27$11.00$11.0023,600
1992-03-26$11.25$11.2523,600
1992-03-25$11.63$11.6313,200
1992-03-24$12.00$12.0016,600
1992-03-23$11.75$11.7524,700
1992-03-20$11.75$11.7555,200
1992-03-19$11.75$11.7519,200
1992-03-18$11.75$11.7525,900
1992-03-17$11.75$11.7559,900
1992-03-16$11.75$11.7528,700
1992-03-13$12.00$12.00211,600
1992-03-12$12.75$12.7565,300
1992-03-11$12.75$12.7582,600
1992-03-10$13.50$13.5069,300
1992-03-09$13.50$13.5093,900
1992-03-06$13.75$13.75171,800
1992-03-05$13.63$13.63236,700
1992-03-04$12.75$12.75145,000
1992-03-03$12.38$12.3868,600
1992-03-02$13.50$13.50127,800
1992-02-28$13.50$13.5015,900
1992-02-27$13.38$13.3832,700
1992-02-26$13.50$13.5066,500
1992-02-25$13.75$13.7524,100
1992-02-24$13.50$13.5044,200
1992-02-21$13.00$13.0037,100
1992-02-20$12.88$12.8848,600
1992-02-19$13.00$13.0050,500
1992-02-18$13.75$13.7584,800
1992-02-14$14.00$14.0069,000
1992-02-13$14.50$14.507,400
1992-02-12$14.75$14.75134,600
1992-02-11$15.00$15.0018,400
1992-02-10$15.25$15.2522,500
1992-02-07$15.00$15.0050,800
1992-02-06$15.50$15.50100,600
1992-02-05$15.50$15.50214,900
1992-02-04$15.88$15.88108,600
1992-02-03$16.25$16.2569,600
1992-01-31$16.25$16.25204,700
1992-01-30$15.25$15.2595,100
1992-01-29$15.00$15.0058,800
1992-01-28$14.50$14.509,000
1992-01-27$15.00$15.0033,000
1992-01-24$14.75$14.7525,300
1992-01-23$14.75$14.75104,300
1992-01-22$14.50$14.5027,200
1992-01-21$15.00$15.00164,300
1992-01-20$15.75$15.7527,100
1992-01-17$15.50$15.5025,100
1992-01-16$15.50$15.5067,600
1992-01-15$15.75$15.75238,800
1992-01-14$15.25$15.2576,000
1992-01-13$15.75$15.75145,200
1992-01-10$16.00$16.00336,500
1992-01-09$16.50$16.50296,300
1992-01-08$14.50$14.50198,700
1992-01-07$14.25$14.25272,800
1992-01-06$14.00$14.0060,700
1992-01-03$13.50$13.5069,900
1992-01-02$13.25$13.2573,700