Regeneron Pharmaceuticals, Inc. (REGN)
NASDAQ: REGN · Real-Time Price · USD
834.04
+7.40 (0.90%)
At close: Aug 21, 2026, 4:00 PM EDT
838.10
+4.06 (0.49%)
After-hours: Aug 21, 2026, 7:58 PM EDT
Regeneron Pharmaceuticals Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Aug 21, 2026 | 835.74 | 847.00 | 826.64 | 834.04 | 834.04 | 0.90% | 771,319 |
| Aug 20, 2026 | 831.70 | 840.82 | 826.05 | 826.64 | 826.64 | -1.69% | 562,307 |
| Aug 19, 2026 | 817.17 | 844.92 | 815.38 | 840.84 | 840.84 | 3.78% | 748,810 |
| Aug 18, 2026 | 814.00 | 821.02 | 805.93 | 810.24 | 810.24 | 0.65% | 610,973 |
| Aug 17, 2026 | 801.76 | 813.18 | 795.73 | 805.93 | 804.99 | 0.30% | 541,259 |
| Aug 14, 2026 | 802.35 | 806.54 | 792.57 | 803.48 | 802.54 | -0.31% | 425,600 |
| Aug 13, 2026 | 802.21 | 815.80 | 794.49 | 805.97 | 805.03 | 1.00% | 709,747 |
| Aug 12, 2026 | 790.55 | 801.36 | 784.61 | 797.99 | 797.06 | 0.12% | 575,164 |
| Aug 11, 2026 | 808.80 | 813.63 | 796.66 | 797.00 | 796.07 | -1.37% | 939,190 |
| Aug 10, 2026 | 781.72 | 809.09 | 775.83 | 808.05 | 807.11 | 3.02% | 1,213,798 |
| Aug 7, 2026 | 774.47 | 785.99 | 767.17 | 784.36 | 783.45 | 1.59% | 837,598 |
| Aug 6, 2026 | 777.85 | 780.95 | 762.79 | 772.11 | 771.21 | 0.46% | 783,950 |
| Aug 5, 2026 | 767.98 | 782.59 | 763.31 | 768.58 | 767.68 | 1.04% | 532,482 |
| Aug 4, 2026 | 753.76 | 763.54 | 747.00 | 760.66 | 759.77 | 0.19% | 817,280 |
| Aug 3, 2026 | 769.54 | 772.75 | 756.44 | 759.24 | 758.35 | -0.44% | 842,730 |
| Jul 31, 2026 | 726.69 | 764.75 | 724.79 | 762.63 | 761.74 | 3.29% | 1,158,583 |
| Jul 30, 2026 | 701.90 | 740.00 | 694.98 | 738.34 | 737.48 | 6.17% | 1,460,963 |
| Jul 29, 2026 | 699.38 | 702.60 | 691.00 | 695.42 | 694.61 | 0.03% | 1,022,421 |
| Jul 28, 2026 | 676.93 | 696.74 | 676.46 | 695.18 | 694.37 | 4.20% | 900,408 |
| Jul 27, 2026 | 661.77 | 678.12 | 659.53 | 667.17 | 666.39 | 1.70% | 650,984 |
| Jul 24, 2026 | 658.29 | 667.50 | 654.05 | 656.01 | 655.24 | 0.63% | 708,392 |
| Jul 23, 2026 | 646.48 | 655.20 | 637.80 | 651.91 | 651.15 | 0.11% | 1,129,411 |
| Jul 22, 2026 | 676.43 | 676.80 | 648.90 | 651.18 | 650.42 | -3.56% | 872,170 |
| Jul 21, 2026 | 672.55 | 678.67 | 666.87 | 675.19 | 674.40 | 0.45% | 529,783 |
| Jul 20, 2026 | 674.72 | 681.74 | 669.88 | 672.15 | 671.37 | -0.67% | 624,791 |
| Jul 17, 2026 | 676.05 | 691.13 | 672.31 | 676.69 | 675.90 | -0.33% | 648,400 |
| Jul 16, 2026 | 666.28 | 680.29 | 661.38 | 678.94 | 678.15 | 2.18% | 730,245 |
| Jul 15, 2026 | 656.11 | 669.10 | 648.66 | 664.45 | 663.68 | 1.27% | 555,419 |
| Jul 14, 2026 | 658.00 | 663.11 | 653.31 | 656.12 | 655.35 | -1.05% | 477,991 |
| Jul 13, 2026 | 661.63 | 665.60 | 655.11 | 663.09 | 662.32 | -0.22% | 606,304 |
| Jul 10, 2026 | 670.06 | 676.66 | 658.50 | 664.52 | 663.74 | -0.51% | 581,778 |
| Jul 9, 2026 | 660.80 | 669.16 | 660.80 | 667.95 | 667.17 | 0.76% | 672,528 |
| Jul 8, 2026 | 669.11 | 670.35 | 661.43 | 662.88 | 662.11 | -1.97% | 746,834 |
| Jul 7, 2026 | 663.18 | 677.92 | 659.02 | 676.23 | 675.44 | 4.07% | 918,937 |
| Jul 6, 2026 | 657.96 | 657.96 | 637.72 | 649.81 | 649.05 | -0.68% | 714,338 |
| Jul 2, 2026 | 630.52 | 654.94 | 625.70 | 654.27 | 653.51 | 4.73% | 1,071,604 |
| Jul 1, 2026 | 629.90 | 632.85 | 623.89 | 624.72 | 623.99 | 0.19% | 1,170,657 |
| Jun 30, 2026 | 630.95 | 634.06 | 622.29 | 623.54 | 622.81 | -1.31% | 820,925 |
| Jun 29, 2026 | 635.99 | 638.30 | 626.86 | 631.81 | 631.07 | -0.17% | 734,528 |
| Jun 26, 2026 | 623.64 | 638.76 | 623.44 | 632.90 | 632.16 | 2.06% | 1,213,634 |
| Jun 25, 2026 | 623.16 | 634.31 | 619.70 | 620.14 | 619.42 | -0.53% | 696,862 |
| Jun 24, 2026 | 621.63 | 631.18 | 619.27 | 623.43 | 622.70 | 0.87% | 839,934 |
| Jun 23, 2026 | 607.92 | 621.79 | 607.92 | 618.03 | 617.31 | 0.90% | 1,279,871 |
| Jun 22, 2026 | 604.46 | 613.56 | 594.90 | 612.50 | 611.79 | 0.42% | 1,604,297 |
| Jun 18, 2026 | 612.07 | 616.24 | 598.19 | 609.94 | 609.23 | 0.33% | 2,609,258 |
| Jun 17, 2026 | 615.16 | 620.00 | 602.13 | 607.93 | 607.22 | -1.11% | 1,299,691 |
| Jun 16, 2026 | 615.18 | 617.60 | 608.21 | 614.73 | 614.01 | -0.04% | 1,007,463 |
| Jun 15, 2026 | 613.35 | 615.95 | 608.59 | 614.98 | 614.26 | 0.46% | 815,879 |
| Jun 12, 2026 | 613.11 | 616.55 | 605.01 | 612.14 | 611.43 | 0.11% | 717,780 |
| Jun 11, 2026 | 604.31 | 618.10 | 603.57 | 611.48 | 610.77 | 1.63% | 943,173 |