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 — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2008-12-31$18.36$18.36431,000
2008-12-30$17.65$17.65256,200
2008-12-29$17.52$17.52233,900
2008-12-26$18.23$18.23121,700
2008-12-24$17.86$17.86134,800
2008-12-23$17.93$17.93292,800
2008-12-22$18.18$18.18542,300
2008-12-19$18.91$18.911,040,400
2008-12-18$17.51$17.51431,900
2008-12-17$16.90$16.90330,500
2008-12-16$17.04$17.04430,400
2008-12-15$15.83$15.83347,200
2008-12-12$16.83$16.83569,800
2008-12-11$16.46$16.46492,000
2008-12-10$17.18$17.18347,000
2008-12-09$16.59$16.59511,000
2008-12-08$16.37$16.37486,900
2008-12-05$15.23$15.23392,900
2008-12-04$14.55$14.55447,800
2008-12-03$14.76$14.76550,500
2008-12-02$14.79$14.79843,000
2008-12-01$13.76$13.76507,000
2008-11-28$15.46$15.46235,000
2008-11-26$15.32$15.32483,700
2008-11-25$14.60$14.60476,700
2008-11-24$14.58$14.58836,500
2008-11-21$13.95$13.951,077,700
2008-11-20$14.27$14.27843,400
2008-11-19$15.66$15.66445,900
2008-11-18$17.06$17.06370,300
2008-11-17$17.67$17.67340,800
2008-11-14$17.17$17.17462,700
2008-11-13$17.69$17.69675,600
2008-11-12$17.03$17.03502,700
2008-11-11$18.59$18.59369,900
2008-11-10$19.07$19.07341,800
2008-11-07$18.35$18.35261,600
2008-11-06$17.61$17.61444,800
2008-11-05$18.34$18.34413,500
2008-11-04$19.77$19.77388,500
2008-11-03$19.88$19.88673,500
2008-10-31$19.30$19.30577,500
2008-10-30$18.14$18.14424,500
2008-10-29$17.43$17.43685,000
2008-10-28$16.75$16.75695,900
2008-10-27$15.46$15.46613,700
2008-10-24$16.15$16.15662,300
2008-10-23$17.70$17.70591,300
2008-10-22$18.69$18.69312,000
2008-10-21$19.25$19.25340,400
2008-10-20$19.40$19.40488,700
2008-10-17$18.75$18.75561,700
2008-10-16$19.29$19.29915,900
2008-10-15$17.11$17.11426,800
2008-10-14$19.25$19.25460,100
2008-10-13$19.59$19.59644,500
2008-10-10$17.14$17.141,461,500
2008-10-09$16.87$16.87593,500
2008-10-08$18.94$18.94800,200
2008-10-07$18.92$18.92563,300
2008-10-06$19.84$19.84895,100
2008-10-03$20.96$20.96672,900
2008-10-02$21.36$21.36410,400
2008-10-01$22.82$22.82491,900
2008-09-30$21.83$21.83492,700
2008-09-29$21.88$21.88656,800
2008-09-26$22.71$22.71650,800
2008-09-25$21.46$21.46295,100
2008-09-24$20.97$20.97356,900
2008-09-23$21.10$21.10395,100
2008-09-22$21.71$21.71853,000
2008-09-19$23.07$23.072,398,500
2008-09-18$22.98$22.981,288,200
2008-09-17$20.88$20.88611,100
2008-09-16$21.64$21.64578,700
2008-09-15$20.45$20.45536,400
2008-09-12$20.71$20.71487,500
2008-09-11$20.58$20.58710,000
2008-09-10$19.43$19.43667,100
2008-09-09$18.52$18.52634,500
2008-09-08$18.90$18.90620,800
2008-09-05$19.07$19.071,135,500
2008-09-04$20.38$20.38681,100
2008-09-03$21.80$21.802,118,300
2008-09-02$20.58$20.58756,900
2008-08-29$21.72$21.72235,800
2008-08-28$21.83$21.83443,600
2008-08-27$20.69$20.69593,900
2008-08-26$21.42$21.42255,200
2008-08-25$20.56$20.56370,000
2008-08-22$21.54$21.54223,700
2008-08-21$20.56$20.56340,400
2008-08-20$21.27$21.27429,200
2008-08-19$21.22$21.22464,900
2008-08-18$22.21$22.21412,700
2008-08-15$22.64$22.64488,100
2008-08-14$22.80$22.80490,900
2008-08-13$21.91$21.91667,900
2008-08-12$22.81$22.81629,800
2008-08-11$22.83$22.83638,600
2008-08-08$21.62$21.621,285,000
2008-08-07$20.24$20.241,784,000
2008-08-06$22.40$22.40732,200
2008-08-05$21.73$21.73726,400
2008-08-04$21.61$21.61760,000
2008-08-01$21.68$21.68960,100
2008-07-31$21.89$21.892,003,500
2008-07-30$20.12$20.12512,900
2008-07-29$19.85$19.85680,600
2008-07-28$18.82$18.82610,400
2008-07-25$19.00$19.00427,100
2008-07-24$18.98$18.98338,300
2008-07-23$18.78$18.78697,800
2008-07-22$19.26$19.26687,100
2008-07-21$18.27$18.27730,700
2008-07-18$17.01$17.01560,000
2008-07-17$17.31$17.31825,700
2008-07-16$16.65$16.65794,700
2008-07-15$15.50$15.50477,900
2008-07-14$15.03$15.03402,100
2008-07-11$15.08$15.08489,300
2008-07-10$14.57$14.57382,100
2008-07-09$14.70$14.70521,600
2008-07-08$14.80$14.80705,800
2008-07-07$13.35$13.35704,400
2008-07-03$14.43$14.43238,400
2008-07-02$14.50$14.50545,500
2008-07-01$13.87$13.87655,300
2008-06-30$14.44$14.44516,400
2008-06-27$14.76$14.76560,900
2008-06-26$14.55$14.55238,000
2008-06-25$15.18$15.18389,100
2008-06-24$15.05$15.05340,600
2008-06-23$14.92$14.92559,900
2008-06-20$14.68$14.681,373,600
2008-06-19$14.91$14.91540,300
2008-06-18$13.95$13.95521,400
2008-06-17$14.55$14.55413,200
2008-06-16$14.64$14.64445,500
2008-06-13$14.22$14.22328,300
2008-06-12$13.82$13.82653,300
2008-06-11$13.86$13.86502,400
2008-06-10$14.33$14.33762,700
2008-06-09$14.70$14.701,018,800
2008-06-06$14.82$14.821,668,400
2008-06-05$15.35$15.355,741,700
2008-06-04$19.08$19.08511,700
2008-06-03$18.75$18.75518,300
2008-06-02$19.47$19.47354,100
2008-05-30$19.90$19.90515,600
2008-05-29$20.21$20.21771,500
2008-05-28$19.15$19.15363,300
2008-05-27$19.44$19.44405,000
2008-05-23$18.91$18.91382,400
2008-05-22$18.86$18.86799,600
2008-05-21$18.58$18.582,902,200
2008-05-20$21.47$21.47618,400
2008-05-19$20.41$20.41571,800
2008-05-16$20.23$20.23784,800
2008-05-15$20.59$20.59501,800
2008-05-14$20.79$20.79465,500
2008-05-13$20.75$20.75246,600
2008-05-12$21.01$21.01392,500
2008-05-09$20.45$20.45426,300
2008-05-08$19.78$19.78587,900
2008-05-07$19.22$19.22549,400
2008-05-06$20.02$20.02685,000
2008-05-05$20.96$20.96454,100
2008-05-02$21.02$21.02547,000
2008-05-01$21.23$21.23529,700
2008-04-30$19.62$19.62403,300
2008-04-29$20.00$20.00290,200
2008-04-28$20.80$20.80281,600
2008-04-25$20.91$20.91308,600
2008-04-24$20.58$20.58543,400
2008-04-23$20.21$20.21450,600
2008-04-22$19.42$19.42400,300
2008-04-21$19.81$19.81307,700
2008-04-18$19.80$19.80453,300
2008-04-17$18.96$18.96329,400
2008-04-16$19.74$19.74573,400
2008-04-15$18.23$18.23341,500
2008-04-14$18.34$18.34365,200
2008-04-11$18.59$18.59738,100
2008-04-10$19.57$19.57523,200
2008-04-09$18.82$18.82451,100
2008-04-08$19.34$19.34512,200
2008-04-07$20.15$20.15480,400
2008-04-04$20.18$20.18604,500
2008-04-03$20.28$20.28424,500
2008-04-02$20.00$20.00382,200
2008-04-01$20.07$20.07818,600
2008-03-31$19.19$19.19740,200
2008-03-28$19.62$19.62510,900
2008-03-27$20.47$20.47552,900
2008-03-26$20.42$20.42414,900
2008-03-25$19.93$19.93681,100
2008-03-24$20.00$20.001,250,600
2008-03-20$17.65$17.651,375,200
2008-03-19$17.14$17.14645,200
2008-03-18$17.42$17.42863,700
2008-03-17$16.44$16.44669,200
2008-03-14$16.79$16.79741,000
2008-03-13$17.41$17.41578,000
2008-03-12$16.69$16.69943,900
2008-03-11$16.12$16.121,464,300
2008-03-10$16.18$16.18706,700
2008-03-07$17.30$17.30954,100
2008-03-06$17.87$17.87796,600
2008-03-05$18.90$18.90741,600
2008-03-04$19.45$19.451,524,400
2008-03-03$20.00$20.00798,300
2008-02-29$19.77$19.771,090,100
2008-02-28$20.03$20.031,132,100
2008-02-27$18.90$18.90536,200
2008-02-26$18.66$18.66499,700
2008-02-25$17.63$17.63688,300
2008-02-22$17.99$17.99535,800
2008-02-21$17.99$17.99583,600
2008-02-20$18.54$18.54621,800
2008-02-19$19.21$19.21292,600
2008-02-15$18.90$18.90529,800
2008-02-14$19.28$19.28421,900
2008-02-13$20.10$20.10541,800
2008-02-12$19.17$19.17717,900
2008-02-11$19.12$19.12807,700
2008-02-08$19.57$19.57440,200
2008-02-07$20.16$20.16429,600
2008-02-06$19.76$19.76367,700
2008-02-05$19.76$19.76427,500
2008-02-04$20.59$20.59392,900
2008-02-01$21.48$21.48470,600
2008-01-31$20.28$20.28470,600
2008-01-30$20.50$20.50500,600
2008-01-29$21.01$21.01667,200
2008-01-28$21.63$21.63450,500
2008-01-25$21.90$21.90356,300
2008-01-24$22.32$22.32472,900
2008-01-23$23.07$23.071,256,000
2008-01-22$24.77$24.771,170,600
2008-01-18$24.60$24.60884,500
2008-01-17$24.33$24.33876,700
2008-01-16$24.43$24.43747,400
2008-01-15$24.15$24.15534,200
2008-01-14$24.54$24.54399,600
2008-01-11$24.29$24.29435,300
2008-01-10$24.75$24.75781,200
2008-01-09$24.01$24.01580,100
2008-01-08$23.04$23.04519,800
2008-01-07$23.25$23.25591,900
2008-01-04$22.49$22.49603,500
2008-01-03$23.52$23.52478,300
2008-01-02$23.56$23.56575,300