Regeneron Pharmaceuticals, Inc. (REGN)
NASDAQ: REGN · Real-Time Price · USD
576.77
-1.28 (-0.22%)
At close: Oct 20, 2025, 4:00 PM EDT
582.00
+5.23 (0.91%)
After-hours: Oct 20, 2025, 7:48 PM EDT
Regeneron Pharmaceuticals Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 20, 2025 | 579.41 | 582.65 | 574.23 | 576.77 | 576.77 | -0.22% | 638,946 |
| Oct 17, 2025 | 570.35 | 579.05 | 566.11 | 578.05 | 578.05 | 1.56% | 745,708 |
| Oct 16, 2025 | 583.01 | 589.08 | 564.00 | 569.17 | 569.17 | -1.26% | 842,249 |
| Oct 15, 2025 | 575.03 | 584.87 | 569.02 | 576.42 | 576.42 | 0.67% | 927,747 |
| Oct 14, 2025 | 556.92 | 576.18 | 553.87 | 572.60 | 572.60 | 2.67% | 1,010,700 |
| Oct 13, 2025 | 551.50 | 563.77 | 541.00 | 557.73 | 557.73 | -1.22% | 1,426,513 |
| Oct 10, 2025 | 569.29 | 577.17 | 555.55 | 564.63 | 564.63 | -0.92% | 1,495,028 |
| Oct 9, 2025 | 569.02 | 574.72 | 563.51 | 569.90 | 569.90 | 1.07% | 853,522 |
| Oct 8, 2025 | 584.01 | 605.00 | 560.97 | 563.86 | 563.86 | -3.32% | 1,415,840 |
| Oct 7, 2025 | 587.59 | 591.45 | 578.42 | 583.24 | 583.24 | -0.38% | 656,378 |
| Oct 6, 2025 | 602.00 | 603.65 | 584.41 | 585.48 | 585.48 | -2.42% | 1,072,437 |
| Oct 3, 2025 | 602.09 | 618.01 | 599.87 | 600.00 | 600.00 | - | 1,154,866 |
| Oct 2, 2025 | 600.42 | 605.41 | 596.60 | 600.00 | 600.00 | 0.01% | 1,096,615 |
| Oct 1, 2025 | 570.87 | 615.39 | 569.99 | 599.94 | 599.94 | 6.70% | 2,083,171 |
| Sep 30, 2025 | 560.58 | 574.04 | 555.00 | 562.27 | 562.27 | 0.27% | 1,662,880 |
| Sep 29, 2025 | 563.90 | 564.91 | 557.34 | 560.75 | 560.75 | -0.56% | 922,537 |
| Sep 26, 2025 | 562.00 | 564.61 | 550.71 | 563.90 | 563.90 | 1.51% | 838,628 |
| Sep 25, 2025 | 577.30 | 579.00 | 549.20 | 555.51 | 555.51 | -3.72% | 1,394,243 |
| Sep 24, 2025 | 567.89 | 577.98 | 566.00 | 576.98 | 576.98 | 1.60% | 777,700 |
| Sep 23, 2025 | 580.00 | 582.00 | 565.45 | 567.89 | 567.89 | -4.67% | 1,362,191 |
| Sep 22, 2025 | 593.00 | 600.75 | 588.67 | 595.68 | 595.68 | 0.62% | 904,972 |
| Sep 19, 2025 | 602.54 | 603.47 | 591.00 | 591.99 | 591.99 | -1.12% | 2,178,008 |
| Sep 18, 2025 | 589.52 | 600.00 | 583.92 | 598.71 | 598.71 | 2.26% | 1,267,122 |
| Sep 17, 2025 | 576.31 | 587.67 | 576.31 | 585.50 | 585.50 | 1.82% | 921,792 |
| Sep 16, 2025 | 573.43 | 579.40 | 567.31 | 575.06 | 575.06 | 0.43% | 708,090 |
| Sep 15, 2025 | 558.54 | 573.69 | 558.54 | 572.59 | 572.59 | 2.25% | 995,857 |
| Sep 12, 2025 | 567.34 | 570.00 | 559.45 | 560.00 | 560.00 | -1.44% | 602,753 |
| Sep 11, 2025 | 555.81 | 570.76 | 555.81 | 568.20 | 568.20 | 2.23% | 868,393 |
| Sep 10, 2025 | 555.21 | 560.00 | 552.98 | 555.83 | 555.83 | -0.13% | 874,725 |
| Sep 9, 2025 | 557.00 | 563.57 | 554.80 | 556.53 | 556.53 | -0.34% | 873,267 |
| Sep 8, 2025 | 571.20 | 571.20 | 552.81 | 558.44 | 558.44 | -2.61% | 1,250,565 |
| Sep 5, 2025 | 565.15 | 577.75 | 565.00 | 573.38 | 573.38 | 1.09% | 960,386 |
| Sep 4, 2025 | 568.01 | 581.98 | 559.62 | 567.22 | 567.22 | 0.61% | 1,124,613 |
| Sep 3, 2025 | 581.99 | 588.70 | 562.79 | 563.80 | 563.80 | -2.44% | 1,117,342 |
| Sep 2, 2025 | 580.54 | 585.49 | 570.35 | 577.90 | 577.90 | -0.48% | 1,020,575 |
| Aug 29, 2025 | 577.15 | 581.25 | 575.89 | 580.70 | 580.70 | 0.19% | 574,375 |
| Aug 28, 2025 | 586.43 | 590.96 | 575.04 | 579.61 | 579.61 | -1.25% | 616,620 |
| Aug 27, 2025 | 591.87 | 597.02 | 585.50 | 586.96 | 586.96 | -0.12% | 584,150 |
| Aug 26, 2025 | 573.00 | 588.10 | 567.08 | 587.65 | 587.65 | 2.67% | 1,614,497 |
| Aug 25, 2025 | 591.06 | 594.88 | 572.25 | 572.38 | 572.38 | -2.90% | 881,012 |
| Aug 22, 2025 | 602.35 | 610.45 | 585.50 | 589.48 | 589.48 | -1.45% | 1,439,350 |
| Aug 21, 2025 | 586.87 | 605.18 | 585.10 | 598.16 | 598.16 | 1.21% | 1,010,305 |
| Aug 20, 2025 | 572.33 | 596.92 | 570.39 | 591.01 | 591.01 | 3.36% | 1,298,657 |
| Aug 19, 2025 | 575.30 | 581.69 | 570.80 | 571.78 | 571.78 | -0.37% | 854,756 |
| Aug 18, 2025 | 582.09 | 585.00 | 573.81 | 573.91 | 573.91 | -1.12% | 769,389 |
| Aug 15, 2025 | 577.96 | 581.95 | 570.84 | 580.41 | 579.52 | 2.55% | 1,122,244 |
| Aug 14, 2025 | 560.90 | 573.49 | 558.00 | 565.97 | 565.10 | 0.79% | 976,320 |
| Aug 13, 2025 | 557.08 | 565.50 | 552.00 | 561.55 | 560.69 | 0.90% | 1,096,184 |
| Aug 12, 2025 | 547.94 | 562.74 | 547.09 | 556.56 | 555.70 | 1.94% | 766,066 |
| Aug 11, 2025 | 561.52 | 572.58 | 544.16 | 545.94 | 545.10 | -3.03% | 1,104,021 |