NASDAQ:REGN | Historical Stock Price | REGENERON 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
1991-04-02 to 2026-09-04
Data captured

Stock Price Chart

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

$3.27$10.74$35.35$116.32$382.72$1,259.251991-04-022026-08-27

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

View year

Historical Stock Price — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$24.18$24.18628,900
2009-12-30$24.74$24.74521,900
2009-12-29$24.43$24.43522,700
2009-12-28$24.40$24.40701,600
2009-12-24$23.20$23.20227,700
2009-12-23$22.97$22.97391,900
2009-12-22$22.52$22.52597,200
2009-12-21$21.95$21.95500,300
2009-12-18$21.41$21.411,762,300
2009-12-17$20.65$20.65457,900
2009-12-16$20.78$20.78624,800
2009-12-15$20.22$20.22682,600
2009-12-14$19.55$19.55498,600
2009-12-11$18.96$18.96531,100
2009-12-10$18.75$18.75354,900
2009-12-09$18.99$18.99184,700
2009-12-08$18.93$18.93609,200
2009-12-07$19.23$19.23602,400
2009-12-04$19.32$19.32368,700
2009-12-03$19.00$19.00282,300
2009-12-02$19.29$19.29585,800
2009-12-01$18.94$18.941,211,700
2009-11-30$18.35$18.35521,800
2009-11-27$18.09$18.09199,800
2009-11-25$18.34$18.34353,100
2009-11-24$18.66$18.66293,700
2009-11-23$18.58$18.58318,700
2009-11-20$18.46$18.46359,600
2009-11-19$18.67$18.67440,200
2009-11-18$19.38$19.38527,500
2009-11-17$19.93$19.93528,400
2009-11-16$19.72$19.72723,300
2009-11-13$18.57$18.57836,200
2009-11-12$18.99$18.991,060,200
2009-11-11$18.95$18.954,280,300
2009-11-10$15.80$15.80526,200
2009-11-09$15.68$15.68319,700
2009-11-06$15.71$15.71356,900
2009-11-05$15.48$15.48473,100
2009-11-04$15.05$15.05759,200
2009-11-03$15.96$15.961,001,000
2009-11-02$15.39$15.39989,400
2009-10-30$15.70$15.701,063,500
2009-10-29$16.24$16.24909,300
2009-10-28$16.54$16.54474,700
2009-10-27$17.20$17.20428,600
2009-10-26$17.49$17.49398,300
2009-10-23$17.59$17.59522,200
2009-10-22$18.14$18.14611,100
2009-10-21$18.02$18.02447,400
2009-10-20$18.18$18.18349,700
2009-10-19$18.71$18.71531,000
2009-10-16$18.82$18.82412,100
2009-10-15$19.11$19.11625,200
2009-10-14$19.08$19.08571,700
2009-10-13$18.89$18.89978,000
2009-10-12$18.88$18.88530,000
2009-10-09$18.41$18.41740,600
2009-10-08$18.38$18.38456,700
2009-10-07$18.78$18.78504,100
2009-10-06$18.98$18.98614,500
2009-10-05$18.40$18.40360,600
2009-10-02$18.62$18.62368,000
2009-10-01$18.75$18.75454,700
2009-09-30$19.30$19.30586,000
2009-09-29$19.64$19.64491,700
2009-09-28$20.34$20.34672,900
2009-09-25$20.30$20.30393,500
2009-09-24$20.70$20.70264,800
2009-09-23$20.95$20.95230,100
2009-09-22$21.16$21.16269,700
2009-09-21$21.61$21.61240,300
2009-09-18$21.28$21.281,059,000
2009-09-17$21.50$21.50212,900
2009-09-16$21.42$21.42373,800
2009-09-15$21.27$21.27405,600
2009-09-14$21.39$21.391,319,200
2009-09-11$21.88$21.88938,000
2009-09-10$21.99$21.99290,300
2009-09-09$22.01$22.01306,200
2009-09-08$22.01$22.01306,700
2009-09-04$22.25$22.25363,300
2009-09-03$22.29$22.29276,600
2009-09-02$22.56$22.56276,700
2009-09-01$23.11$23.11553,700
2009-08-31$22.73$22.73354,700
2009-08-28$22.33$22.33248,400
2009-08-27$22.77$22.77188,200
2009-08-26$22.95$22.95302,200
2009-08-25$22.58$22.58501,700
2009-08-24$22.00$22.00474,200
2009-08-21$22.22$22.22657,000
2009-08-20$22.17$22.17409,400
2009-08-19$22.04$22.04657,900
2009-08-18$21.83$21.83286,300
2009-08-17$21.47$21.47362,200
2009-08-14$22.11$22.11579,400
2009-08-13$22.52$22.52418,500
2009-08-12$22.72$22.72497,100
2009-08-11$22.50$22.50515,700
2009-08-10$22.36$22.36330,300
2009-08-07$21.86$21.86545,300
2009-08-06$21.45$21.45365,800
2009-08-05$21.75$21.75375,800
2009-08-04$21.81$21.81328,500
2009-08-03$21.35$21.35399,100
2009-07-31$21.48$21.48345,000
2009-07-30$21.88$21.88592,300
2009-07-29$21.40$21.40404,500
2009-07-28$21.71$21.71694,000
2009-07-27$20.96$20.96800,500
2009-07-24$20.75$20.751,033,800
2009-07-23$19.62$19.621,282,400
2009-07-22$17.97$17.97288,300
2009-07-21$18.03$18.03227,900
2009-07-20$17.68$17.68282,500
2009-07-17$17.62$17.62321,500
2009-07-16$17.54$17.54244,700
2009-07-15$17.25$17.25532,800
2009-07-14$16.66$16.66162,600
2009-07-13$16.65$16.65292,200
2009-07-10$16.29$16.29365,300
2009-07-09$16.33$16.33498,300
2009-07-08$16.61$16.61444,300
2009-07-07$16.88$16.88306,000
2009-07-06$17.02$17.02388,900
2009-07-02$17.05$17.05578,300
2009-07-01$18.14$18.14284,600
2009-06-30$17.92$17.92451,400
2009-06-29$17.84$17.84472,200
2009-06-26$18.14$18.14919,400
2009-06-25$17.61$17.61463,800
2009-06-24$17.09$17.09560,500
2009-06-23$16.97$16.97389,600
2009-06-22$17.21$17.21610,700
2009-06-19$18.21$18.211,620,100
2009-06-18$17.32$17.32609,600
2009-06-17$16.58$16.58498,100
2009-06-16$15.64$15.64497,200
2009-06-15$15.32$15.32714,900
2009-06-12$16.36$16.36332,400
2009-06-11$16.07$16.07522,600
2009-06-10$16.15$16.15489,800
2009-06-09$16.02$16.02346,300
2009-06-08$15.92$15.92267,500
2009-06-05$16.36$16.36278,400
2009-06-04$16.36$16.36334,700
2009-06-03$16.27$16.27382,800
2009-06-02$15.86$15.86749,900
2009-06-01$15.59$15.59498,800
2009-05-29$15.27$15.27825,900
2009-05-28$14.74$14.74476,000
2009-05-27$14.58$14.58390,900
2009-05-26$14.63$14.63525,200
2009-05-22$13.99$13.99370,400
2009-05-21$14.14$14.14435,700
2009-05-20$14.79$14.79627,200
2009-05-19$14.80$14.80455,100
2009-05-18$14.88$14.88424,000
2009-05-15$14.61$14.61582,100
2009-05-14$15.10$15.10440,900
2009-05-13$15.00$15.00844,900
2009-05-12$15.91$15.91577,800
2009-05-11$16.25$16.25686,300
2009-05-08$15.84$15.84566,800
2009-05-07$15.14$15.14610,100
2009-05-06$14.88$14.88617,700
2009-05-05$15.14$15.14712,400
2009-05-04$14.95$14.95768,400
2009-05-01$13.85$13.85694,000
2009-04-30$13.26$13.26621,300
2009-04-29$13.48$13.48525,300
2009-04-28$12.84$12.84528,500
2009-04-27$12.66$12.66529,100
2009-04-24$12.94$12.94617,500
2009-04-23$12.41$12.41480,300
2009-04-22$12.48$12.48468,300
2009-04-21$12.92$12.92321,000
2009-04-20$12.79$12.79431,200
2009-04-17$13.15$13.15581,700
2009-04-16$13.40$13.40579,400
2009-04-15$13.30$13.30523,700
2009-04-14$13.26$13.26625,200
2009-04-13$13.44$13.44488,200
2009-04-09$13.94$13.94540,400
2009-04-08$13.34$13.34367,200
2009-04-07$13.15$13.15469,100
2009-04-06$13.59$13.591,006,900
2009-04-03$13.02$13.02532,600
2009-04-02$13.46$13.46671,800
2009-04-01$13.16$13.16739,600
2009-03-31$13.86$13.86701,300
2009-03-30$14.18$14.18690,200
2009-03-27$14.38$14.38644,300
2009-03-26$15.13$15.13827,200
2009-03-25$14.21$14.21367,300
2009-03-24$13.77$13.77509,500
2009-03-23$14.03$14.03699,600
2009-03-20$13.45$13.45719,600
2009-03-19$13.68$13.68441,900
2009-03-18$14.45$14.45388,800
2009-03-17$14.21$14.21451,300
2009-03-16$13.44$13.44543,500
2009-03-13$14.03$14.03506,100
2009-03-12$13.33$13.33623,800
2009-03-11$12.05$12.05553,000
2009-03-10$12.60$12.60518,300
2009-03-09$12.40$12.40475,000
2009-03-06$12.67$12.67466,200
2009-03-05$12.78$12.78717,900
2009-03-04$13.96$13.96562,500
2009-03-03$13.81$13.81697,800
2009-03-02$13.54$13.54898,300
2009-02-27$14.25$14.25786,000
2009-02-26$15.40$15.40851,900
2009-02-25$17.25$17.25540,800
2009-02-24$17.39$17.39561,500
2009-02-23$17.15$17.15491,500
2009-02-20$18.15$18.15478,000
2009-02-19$18.30$18.30349,000
2009-02-18$18.50$18.50526,300
2009-02-17$19.02$19.02467,400
2009-02-13$18.97$18.97471,100
2009-02-12$18.40$18.40525,700
2009-02-11$18.09$18.09639,400
2009-02-10$18.25$18.25379,900
2009-02-09$19.23$19.23266,600
2009-02-06$19.92$19.92336,700
2009-02-05$19.12$19.12383,800
2009-02-04$18.79$18.79357,100
2009-02-03$18.94$18.94351,500
2009-02-02$18.15$18.15502,300
2009-01-30$17.48$17.48421,100
2009-01-29$17.15$17.15335,000
2009-01-28$17.57$17.57286,400
2009-01-27$17.05$17.05468,800
2009-01-26$16.12$16.12294,400
2009-01-23$15.57$15.57350,500
2009-01-22$15.31$15.31361,800
2009-01-21$16.40$16.40430,100
2009-01-20$15.38$15.38479,800
2009-01-16$17.36$17.36319,900
2009-01-15$17.01$17.01307,000
2009-01-14$16.87$16.87286,200
2009-01-13$17.91$17.91229,300
2009-01-12$17.47$17.47268,400
2009-01-09$17.48$17.48330,400
2009-01-08$18.28$18.28257,000
2009-01-07$17.98$17.98248,600
2009-01-06$18.96$18.96301,600
2009-01-05$19.08$19.08323,700
2009-01-02$18.70$18.70354,700