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 — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$373.50$373.50680,200
2018-12-28$362.62$362.62522,200
2018-12-27$364.79$364.79690,200
2018-12-26$363.29$363.29832,700
2018-12-24$340.64$340.64463,800
2018-12-21$344.60$344.601,514,200
2018-12-20$356.23$356.23852,400
2018-12-19$360.70$360.70827,100
2018-12-18$369.00$369.00804,800
2018-12-17$375.50$375.50833,100
2018-12-14$381.17$381.17758,400
2018-12-13$378.51$378.51478,900
2018-12-12$377.96$377.96601,200
2018-12-11$375.72$375.72814,700
2018-12-10$377.59$377.59876,100
2018-12-07$372.83$372.83835,800
2018-12-06$381.69$381.69896,700
2018-12-04$372.80$372.801,012,900
2018-12-03$382.61$382.611,100,700
2018-11-30$365.65$365.65696,800
2018-11-29$359.57$359.57555,700
2018-11-28$363.64$363.64651,100
2018-11-27$353.59$353.59558,600
2018-11-26$353.18$353.18706,000
2018-11-23$340.86$340.86199,500
2018-11-21$343.17$343.17481,200
2018-11-20$337.29$337.29552,500
2018-11-19$338.99$338.99827,800
2018-11-16$345.33$345.33768,300
2018-11-15$341.65$341.65796,700
2018-11-14$337.29$337.29935,300
2018-11-13$342.10$342.10594,100
2018-11-12$346.56$346.56657,100
2018-11-09$356.66$356.66544,000
2018-11-08$363.34$363.34536,600
2018-11-07$364.25$364.25823,600
2018-11-06$357.61$357.61981,400
2018-11-05$354.93$354.93819,100
2018-11-02$352.59$352.59663,600
2018-11-01$355.11$355.11997,300
2018-10-31$339.24$339.24890,300
2018-10-30$339.70$339.701,086,800
2018-10-29$336.18$336.18947,000
2018-10-26$335.82$335.821,038,700
2018-10-25$336.94$336.942,351,700
2018-10-24$351.39$351.391,416,600
2018-10-23$380.69$380.69778,000
2018-10-22$387.80$387.80643,900
2018-10-19$389.83$389.83728,900
2018-10-18$395.22$395.22553,500
2018-10-17$399.06$399.06440,000
2018-10-16$398.52$398.52684,500
2018-10-15$377.55$377.55444,900
2018-10-12$384.16$384.16810,200
2018-10-11$371.67$371.67761,600
2018-10-10$381.94$381.94673,300
2018-10-09$392.53$392.53422,000
2018-10-08$394.15$394.15371,500
2018-10-05$391.77$391.77453,700
2018-10-04$392.05$392.05627,500
2018-10-03$403.04$403.04516,200
2018-10-02$400.57$400.57586,900
2018-10-01$394.23$394.23866,700
2018-09-28$404.04$404.04841,600
2018-09-27$406.00$406.00813,200
2018-09-26$391.53$391.53406,200
2018-09-25$390.05$390.05442,200
2018-09-24$390.19$390.19372,800
2018-09-21$390.28$390.281,147,800
2018-09-20$387.25$387.25680,600
2018-09-19$383.70$383.70610,500
2018-09-18$388.33$388.33644,600
2018-09-17$386.49$386.49525,800
2018-09-14$392.17$392.17493,400
2018-09-13$397.71$397.71538,800
2018-09-12$388.88$388.88684,200
2018-09-11$393.77$393.77346,000
2018-09-10$395.04$395.04355,700
2018-09-07$395.42$395.42503,600
2018-09-06$397.93$397.93483,900
2018-09-05$406.94$406.94541,000
2018-09-04$403.93$403.93627,100
2018-08-31$406.75$406.75484,400
2018-08-30$408.51$408.51956,700
2018-08-29$406.62$406.621,234,200
2018-08-28$390.05$390.05657,900
2018-08-27$388.44$388.44847,700
2018-08-24$376.33$376.33421,300
2018-08-23$379.19$379.19438,900
2018-08-22$380.17$380.17464,700
2018-08-21$378.56$378.56553,500
2018-08-20$374.80$374.80543,800
2018-08-17$374.26$374.26669,600
2018-08-16$371.78$371.78595,400
2018-08-15$361.87$361.87551,100
2018-08-14$366.23$366.23517,700
2018-08-13$366.45$366.45590,200
2018-08-10$368.78$368.78633,400
2018-08-09$372.14$372.141,000,600
2018-08-08$374.27$374.271,161,000
2018-08-07$391.42$391.42477,700
2018-08-06$390.05$390.05769,100
2018-08-03$394.88$394.881,312,200
2018-08-02$397.00$397.002,148,400
2018-08-01$371.03$371.03675,200
2018-07-31$368.01$368.01961,500
2018-07-30$371.51$371.51758,400
2018-07-27$367.60$367.601,093,900
2018-07-26$373.59$373.59579,300
2018-07-25$374.49$374.49672,700
2018-07-24$372.77$372.77846,700
2018-07-23$366.21$366.211,106,500
2018-07-20$367.11$367.11965,100
2018-07-19$367.74$367.74667,000
2018-07-18$365.98$365.98456,700
2018-07-17$365.43$365.43415,300
2018-07-16$364.75$364.75596,400
2018-07-13$367.64$367.64546,200
2018-07-12$366.43$366.43698,100
2018-07-11$365.21$365.21595,800
2018-07-10$366.27$366.27921,300
2018-07-09$371.31$371.31881,400
2018-07-06$369.59$369.591,002,500
2018-07-05$360.95$360.95954,300
2018-07-03$353.86$353.86540,600
2018-07-02$351.14$351.14871,600
2018-06-29$344.99$344.991,205,600
2018-06-28$341.82$341.82948,300
2018-06-27$336.61$336.611,500,900
2018-06-26$327.23$327.23655,000
2018-06-25$327.11$327.11574,400
2018-06-22$331.97$331.97714,900
2018-06-21$329.04$329.041,014,100
2018-06-20$336.93$336.931,300,000
2018-06-19$327.07$327.071,096,400
2018-06-18$315.61$315.61613,900
2018-06-15$315.30$315.301,034,200
2018-06-14$315.67$315.67606,900
2018-06-13$308.28$308.28465,200
2018-06-12$309.53$309.53353,600
2018-06-11$311.95$311.95535,500
2018-06-08$308.10$308.10644,300
2018-06-07$308.72$308.72829,700
2018-06-06$315.13$315.13630,000
2018-06-05$311.85$311.85714,000
2018-06-04$312.09$312.091,153,400
2018-06-01$306.88$306.881,012,700
2018-05-31$300.32$300.32670,800
2018-05-30$300.89$300.89775,700
2018-05-29$296.50$296.50737,500
2018-05-25$293.74$293.74637,400
2018-05-24$294.61$294.61585,400
2018-05-23$295.31$295.31568,700
2018-05-22$294.68$294.68441,900
2018-05-21$296.60$296.60766,700
2018-05-18$301.81$301.81938,300
2018-05-17$308.00$308.001,229,100
2018-05-16$303.21$303.21667,900
2018-05-15$300.45$300.45819,900
2018-05-14$309.54$309.541,258,000
2018-05-11$306.94$306.942,944,500
2018-05-10$288.90$288.90720,400
2018-05-09$284.60$284.60764,400
2018-05-08$285.86$285.86758,800
2018-05-07$288.54$288.541,037,300
2018-05-04$291.25$291.251,398,700
2018-05-03$292.41$292.411,259,500
2018-05-02$296.14$296.141,036,000
2018-05-01$301.22$301.221,195,300
2018-04-30$303.68$303.681,568,900
2018-04-27$313.05$313.052,085,600
2018-04-26$323.97$323.97803,000
2018-04-25$316.17$316.17704,400
2018-04-24$312.00$312.00752,300
2018-04-23$316.01$316.01605,800
2018-04-20$314.25$314.25688,700
2018-04-19$315.83$315.83546,100
2018-04-18$321.39$321.39405,800
2018-04-17$322.63$322.63874,500
2018-04-16$318.20$318.20816,400
2018-04-13$321.56$321.56846,100
2018-04-12$325.08$325.08575,200
2018-04-11$322.78$322.78688,000
2018-04-10$328.04$328.04554,000
2018-04-09$319.70$319.70681,300
2018-04-06$319.61$319.611,010,200
2018-04-05$328.59$328.59848,500
2018-04-04$337.35$337.35857,500
2018-04-03$332.20$332.20815,400
2018-04-02$330.56$330.561,317,100
2018-03-29$344.36$344.361,032,800
2018-03-28$338.48$338.481,037,400
2018-03-27$329.24$329.24996,300
2018-03-26$330.71$330.71733,600
2018-03-23$321.29$321.29693,300
2018-03-22$327.69$327.69608,400
2018-03-21$334.87$334.87431,300
2018-03-20$333.86$333.86690,000
2018-03-19$339.08$339.08924,000
2018-03-16$343.30$343.301,348,900
2018-03-15$334.93$334.93569,600
2018-03-14$341.42$341.42577,800
2018-03-13$337.75$337.75851,500
2018-03-12$344.55$344.551,234,400
2018-03-09$341.70$341.70759,700
2018-03-08$340.78$340.78836,100
2018-03-07$334.41$334.41599,300
2018-03-06$333.48$333.48716,700
2018-03-05$333.91$333.91746,200
2018-03-02$330.47$330.47909,500
2018-03-01$321.78$321.78923,300
2018-02-28$320.44$320.44840,300
2018-02-27$320.97$320.97935,100
2018-02-26$324.89$324.89552,300
2018-02-23$323.86$323.86688,700
2018-02-22$315.82$315.82841,600
2018-02-21$317.51$317.51946,800
2018-02-20$323.04$323.04844,000
2018-02-16$332.15$332.151,175,400
2018-02-15$333.18$333.18834,400
2018-02-14$330.69$330.691,981,400
2018-02-13$324.57$324.571,557,300
2018-02-12$342.67$342.671,398,200
2018-02-09$336.38$336.382,088,300
2018-02-08$322.62$322.621,634,600
2018-02-07$334.61$334.611,022,600
2018-02-06$338.80$338.802,005,600
2018-02-05$331.98$331.981,297,000
2018-02-02$347.86$347.861,546,600
2018-02-01$345.79$345.792,403,100
2018-01-31$366.65$366.65848,700
2018-01-30$379.77$379.77603,700
2018-01-29$382.88$382.881,095,200
2018-01-26$374.36$374.361,429,600
2018-01-25$391.84$391.84869,800
2018-01-24$383.32$383.32712,900
2018-01-23$381.71$381.71842,200
2018-01-22$375.86$375.86760,100
2018-01-19$371.53$371.53665,000
2018-01-18$371.28$371.28596,400
2018-01-17$374.07$374.07738,900
2018-01-16$370.21$370.211,003,400
2018-01-12$366.96$366.96830,700
2018-01-11$368.26$368.26627,700
2018-01-10$366.46$366.46805,800
2018-01-09$368.65$368.651,207,600
2018-01-08$372.52$372.521,117,800
2018-01-05$385.10$385.10461,100
2018-01-04$382.95$382.95650,100
2018-01-03$393.78$393.78721,300
2018-01-02$382.60$382.60621,800