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Regeneron Pharmaceuticals, Inc. (REGN)
NASDAQ: REGN · Real-Time Price · USD
819.09
+13.42 (1.67%)
At close: Oct 22, 2026, 4:00 PM EDT
818.99
-0.10 (-0.01%)
After-hours: Oct 22, 2026, 4:35 PM EDT

Regeneron Pharmaceuticals Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 22, 2026809.01825.52800.00819.09819.091.67%852,049
Oct 21, 2026806.74813.86800.24805.67805.67-0.22%577,987
Oct 20, 2026793.85807.86789.69807.48807.483.25%623,377
Oct 19, 2026792.59800.00780.83782.04782.04-1.10%489,580
Oct 16, 2026803.01805.68787.32790.74790.74-0.70%653,725
Oct 15, 2026802.33809.49792.58796.34796.342.31%798,909
Oct 14, 2026758.16781.84755.21778.36778.363.35%879,091
Oct 13, 2026762.49765.60743.57753.12753.12-1.27%629,557
Oct 12, 2026748.67768.66744.96762.81762.812.18%618,293
Oct 9, 2026737.20751.27732.83746.54746.540.94%466,026
Oct 8, 2026742.12744.50723.65739.57739.57-0.34%500,295
Oct 7, 2026738.05753.68734.18742.12742.120.46%626,433
Oct 6, 2026734.61740.51727.16738.72738.721.69%615,062
Oct 5, 2026734.37736.42722.02726.47726.47-1.19%695,028
Oct 2, 2026740.50742.50729.20735.20735.200.05%613,949
Oct 1, 2026766.53777.43726.02734.81734.81-3.09%1,042,865
Sep 30, 2026749.84763.72742.94758.27758.271.03%872,457
Sep 29, 2026745.85752.47741.83750.51750.51-0.23%804,336
Sep 28, 2026778.09780.95750.00752.25752.25-4.54%1,149,832
Sep 25, 2026803.87803.87784.13788.04788.04-1.00%592,145
Sep 24, 2026801.59807.21789.39796.02796.02-0.72%602,653
Sep 23, 2026805.23813.53790.02801.82801.82-0.26%721,110
Sep 22, 2026802.48811.66791.31803.90803.900.72%600,266
Sep 21, 2026786.03801.44779.96798.17798.171.70%704,526
Sep 18, 2026787.34794.73779.65784.85784.85-0.58%2,473,436
Sep 17, 2026781.18789.99774.78789.45789.451.92%702,816
Sep 16, 2026775.82779.98771.80774.61774.610.06%382,945
Sep 15, 2026788.53788.58769.57774.11774.11-2.47%540,837
Sep 14, 2026791.98798.84779.45793.74793.741.57%591,295
Sep 11, 2026800.00800.22780.81781.49781.49-1.48%443,986
Sep 10, 2026794.36806.14792.00793.26793.26-1.78%526,911
Sep 9, 2026803.83808.63796.73807.65807.65-0.33%621,458
Sep 8, 2026814.36821.17799.42810.31810.31-2.10%556,536
Sep 4, 2026840.06841.54825.83827.72827.72-1.87%561,170
Sep 3, 2026858.19859.34837.63843.47843.47-1.00%496,255
Sep 2, 2026826.24854.49825.77852.03852.033.42%749,453
Sep 1, 2026808.86824.63804.32823.82823.823.10%682,806
Aug 31, 2026782.44802.78779.08799.08799.080.62%894,268
Aug 28, 2026809.40809.40789.08794.19794.19-1.67%488,305
Aug 27, 2026806.18817.62804.27807.71807.71-0.87%766,990
Aug 26, 2026827.78831.67814.70814.79814.79-2.25%585,370
Aug 25, 2026829.22839.94823.44833.56833.560.61%505,424
Aug 24, 2026834.51834.70823.40828.50828.50-0.66%672,012
Aug 21, 2026835.74847.00826.64834.04834.040.90%786,921
Aug 20, 2026831.70840.82826.05826.64826.64-1.69%596,474
Aug 19, 2026817.17844.92815.38840.84840.843.78%750,445
Aug 18, 2026814.00821.02805.93810.24810.240.65%779,072
Aug 17, 2026801.76813.18795.73805.93804.990.30%541,306
Aug 14, 2026802.35806.54792.57803.48802.54-0.31%425,600
Aug 13, 2026802.21815.80794.49805.97805.031.00%709,747