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.

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Historical Stock Price — 2006

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2006-12-29$20.07$20.07282,900
2006-12-28$20.05$20.05315,800
2006-12-27$20.51$20.51233,500
2006-12-26$20.15$20.15213,100
2006-12-22$20.28$20.28211,500
2006-12-21$20.54$20.54630,300
2006-12-20$20.42$20.42390,500
2006-12-19$20.06$20.06516,800
2006-12-18$20.06$20.06546,000
2006-12-15$20.19$20.191,286,500
2006-12-14$20.24$20.24473,400
2006-12-13$20.05$20.05467,200
2006-12-12$20.27$20.27618,700
2006-12-11$20.82$20.82509,200
2006-12-08$21.71$21.71320,600
2006-12-07$21.28$21.28228,000
2006-12-06$21.54$21.54279,800
2006-12-05$21.70$21.70693,800
2006-12-04$21.61$21.61654,900
2006-12-01$21.16$21.16595,200
2006-11-30$21.51$21.51803,300
2006-11-29$21.50$21.50643,000
2006-11-28$21.71$21.711,120,200
2006-11-27$22.00$22.001,044,300
2006-11-24$23.24$23.2498,600
2006-11-22$23.35$23.35404,400
2006-11-21$23.41$23.41743,700
2006-11-20$23.85$23.851,467,700
2006-11-17$23.65$23.65528,200
2006-11-16$23.72$23.72574,000
2006-11-15$23.57$23.57554,800
2006-11-14$23.26$23.261,441,500
2006-11-13$24.28$24.28460,300
2006-11-10$23.82$23.82764,500
2006-11-09$22.15$22.15936,800
2006-11-08$22.98$22.98795,300
2006-11-07$24.24$24.241,025,000
2006-11-06$23.22$23.221,309,800
2006-11-03$20.78$20.78516,100
2006-11-02$20.20$20.20390,900
2006-11-01$19.89$19.89363,300
2006-10-31$20.05$20.051,048,100
2006-10-30$19.40$19.40330,500
2006-10-27$19.66$19.66249,500
2006-10-26$19.95$19.95292,600
2006-10-25$19.25$19.25278,000
2006-10-24$19.32$19.32277,700
2006-10-23$19.62$19.62395,900
2006-10-20$19.45$19.45490,800
2006-10-19$18.78$18.78867,800
2006-10-18$17.88$17.88376,300
2006-10-17$17.99$17.99379,900
2006-10-16$17.86$17.86322,200
2006-10-13$17.50$17.50478,200
2006-10-12$17.02$17.02266,400
2006-10-11$16.76$16.76216,100
2006-10-10$16.76$16.76306,900
2006-10-09$16.77$16.77168,100
2006-10-06$16.74$16.74261,700
2006-10-05$16.72$16.72432,500
2006-10-04$16.49$16.49677,200
2006-10-03$15.64$15.64551,000
2006-10-02$15.67$15.67261,000
2006-09-29$15.69$15.69242,300
2006-09-28$16.06$16.06299,500
2006-09-27$16.03$16.03573,000
2006-09-26$15.34$15.34241,200
2006-09-25$15.52$15.52214,400
2006-09-22$15.52$15.52252,800
2006-09-21$16.20$16.20280,400
2006-09-20$16.93$16.93313,500
2006-09-19$16.42$16.42428,400
2006-09-18$16.61$16.61183,400
2006-09-15$16.75$16.751,563,600
2006-09-14$16.55$16.55249,700
2006-09-13$16.52$16.52285,200
2006-09-12$16.40$16.40347,300
2006-09-11$15.98$15.98447,200
2006-09-08$16.00$16.00202,600
2006-09-07$15.83$15.83354,100
2006-09-06$15.75$15.75311,500
2006-09-05$16.37$16.37471,500
2006-09-01$15.82$15.82152,700
2006-08-31$15.88$15.88242,600
2006-08-30$15.92$15.92210,700
2006-08-29$15.47$15.47345,400
2006-08-28$15.04$15.04134,700
2006-08-25$14.79$14.7995,400
2006-08-24$14.55$14.55156,500
2006-08-23$14.62$14.62140,700
2006-08-22$14.95$14.9589,100
2006-08-21$14.95$14.95182,500
2006-08-18$15.41$15.41213,900
2006-08-17$15.20$15.20178,300
2006-08-16$14.86$14.86274,700
2006-08-15$14.45$14.45280,000
2006-08-14$13.80$13.80145,700
2006-08-11$13.91$13.91269,500
2006-08-10$13.91$13.91271,600
2006-08-09$14.25$14.25370,900
2006-08-08$14.23$14.23315,600
2006-08-07$14.09$14.09229,600
2006-08-04$14.00$14.00282,400
2006-08-03$13.96$13.96249,800
2006-08-02$13.59$13.59289,800
2006-08-01$13.21$13.21319,500
2006-07-31$13.66$13.66369,300
2006-07-28$13.80$13.80333,300
2006-07-27$13.53$13.53897,300
2006-07-26$12.66$12.66267,100
2006-07-25$12.50$12.50214,100
2006-07-24$12.09$12.09190,400
2006-07-21$11.12$11.12263,600
2006-07-20$11.58$11.58226,700
2006-07-19$12.29$12.29367,500
2006-07-18$11.23$11.23306,000
2006-07-17$11.68$11.68180,200
2006-07-14$11.92$11.92327,600
2006-07-13$12.16$12.16204,500
2006-07-12$12.69$12.69211,900
2006-07-11$13.02$13.02232,000
2006-07-10$12.79$12.79282,600
2006-07-07$12.74$12.74306,800
2006-07-06$12.80$12.80570,400
2006-07-05$12.86$12.86584,700
2006-07-03$13.22$13.22251,200
2006-06-30$12.82$12.821,380,600
2006-06-29$12.90$12.90345,600
2006-06-28$12.27$12.27372,900
2006-06-27$12.18$12.18361,300
2006-06-26$12.46$12.46249,700
2006-06-23$12.30$12.30143,800
2006-06-22$12.32$12.32167,500
2006-06-21$12.38$12.38245,500
2006-06-20$12.31$12.31298,300
2006-06-19$12.35$12.35402,800
2006-06-16$12.48$12.48985,300
2006-06-15$12.62$12.62236,700
2006-06-14$12.22$12.22283,100
2006-06-13$12.01$12.01245,200
2006-06-12$12.09$12.09237,900
2006-06-09$12.71$12.71240,600
2006-06-08$13.03$13.03435,300
2006-06-07$13.17$13.17266,800
2006-06-06$12.98$12.98288,500
2006-06-05$12.92$12.92410,000
2006-06-02$13.20$13.20275,000
2006-06-01$12.85$12.85398,700
2006-05-31$12.94$12.94585,300
2006-05-30$11.56$11.56401,300
2006-05-26$12.09$12.09314,600
2006-05-25$12.00$12.00453,800
2006-05-24$11.58$11.58541,200
2006-05-23$11.42$11.42525,900
2006-05-22$11.90$11.90470,500
2006-05-19$11.99$11.99765,100
2006-05-18$12.02$12.02360,000
2006-05-17$12.33$12.33564,200
2006-05-16$12.82$12.82566,100
2006-05-15$12.99$12.99517,700
2006-05-12$13.72$13.72381,400
2006-05-11$14.54$14.54279,900
2006-05-10$15.25$15.25236,500
2006-05-09$15.23$15.23282,800
2006-05-08$15.45$15.45383,700
2006-05-05$15.17$15.17328,200
2006-05-04$15.17$15.17303,000
2006-05-03$15.34$15.34290,300
2006-05-02$14.51$14.51471,800
2006-05-01$14.21$14.21227,400
2006-04-28$14.52$14.52290,400
2006-04-27$14.23$14.23440,200
2006-04-26$13.78$13.78164,900
2006-04-25$13.99$13.99290,800
2006-04-24$14.52$14.52406,600
2006-04-21$14.98$14.98265,400
2006-04-20$15.09$15.09318,700
2006-04-19$15.25$15.25553,200
2006-04-18$15.12$15.12337,800
2006-04-17$14.59$14.59350,600
2006-04-13$14.23$14.23495,200
2006-04-12$13.89$13.89569,900
2006-04-11$13.92$13.92382,400
2006-04-10$14.41$14.41581,200
2006-04-07$15.15$15.15269,500
2006-04-06$15.27$15.27408,400
2006-04-05$15.69$15.69273,400
2006-04-04$15.72$15.72327,600
2006-04-03$15.96$15.96462,800
2006-03-31$16.63$16.63330,600
2006-03-30$16.53$16.53307,100
2006-03-29$16.25$16.25246,700
2006-03-28$16.24$16.24345,600
2006-03-27$16.89$16.89304,900
2006-03-24$17.20$17.20275,500
2006-03-23$17.07$17.07210,200
2006-03-22$16.91$16.91371,700
2006-03-21$16.27$16.27284,900
2006-03-20$16.49$16.49296,500
2006-03-17$16.77$16.77495,600
2006-03-16$16.97$16.97339,500
2006-03-15$16.63$16.63387,300
2006-03-14$16.91$16.91242,000
2006-03-13$16.30$16.30408,600
2006-03-10$16.70$16.70488,800
2006-03-09$16.30$16.30414,400
2006-03-08$17.28$17.28324,600
2006-03-07$17.16$17.16384,700
2006-03-06$18.00$18.00745,400
2006-03-03$17.15$17.15442,000
2006-03-02$17.30$17.30279,500
2006-03-01$16.77$16.77459,700
2006-02-28$16.37$16.37982,100
2006-02-27$17.50$17.50818,000
2006-02-24$16.00$16.00808,800
2006-02-23$15.04$15.04314,100
2006-02-22$15.12$15.12498,500
2006-02-21$15.28$15.28449,600
2006-02-17$15.09$15.09281,100
2006-02-16$15.71$15.71233,100
2006-02-15$15.58$15.58183,400
2006-02-14$15.31$15.31193,100
2006-02-13$14.99$14.99432,500
2006-02-10$15.33$15.33219,000
2006-02-09$15.31$15.31220,500
2006-02-08$15.41$15.41178,100
2006-02-07$15.48$15.48314,800
2006-02-06$15.89$15.89476,600
2006-02-03$16.19$16.19794,900
2006-02-02$15.68$15.68337,300
2006-02-01$15.77$15.77472,100
2006-01-31$15.23$15.23284,700
2006-01-30$15.18$15.18221,400
2006-01-27$15.44$15.44550,800
2006-01-26$15.52$15.52340,100
2006-01-25$15.27$15.27324,300
2006-01-24$15.11$15.11345,600
2006-01-23$15.22$15.22725,100
2006-01-20$15.50$15.50441,800
2006-01-19$16.47$16.47612,700
2006-01-18$15.77$15.77619,800
2006-01-17$15.95$15.95359,400
2006-01-13$16.13$16.13491,100
2006-01-12$15.84$15.84578,400
2006-01-11$16.29$16.29767,500
2006-01-10$16.72$16.72552,600
2006-01-09$17.13$17.13889,000
2006-01-06$17.00$17.00664,600
2006-01-05$16.45$16.45691,600
2006-01-04$15.92$15.92590,400
2006-01-03$15.90$15.90964,600