The highest closing price for Regeneron Pharmaceuticals (REGN) last month was $852.03, on September 2. It was down 6.3% for the month. The latest price is $735.40.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
September 30 2026 | $749.84 | $763.72 | $742.94 | $758.27 | 867,813 |
September 29 2026 | $745.85 | $752.47 | $741.83 | $750.51 | 799,502 |
September 28 2026 | $778.09 | $780.95 | $750.00 | $752.25 | 1,064,518 |
September 25 2026 | $803.87 | $803.87 | $784.13 | $788.04 | 592,100 |
September 24 2026 | $801.59 | $807.21 | $789.39 | $796.02 | 602,600 |
September 23 2026 | $805.23 | $813.53 | $790.02 | $801.82 | 721,100 |
September 22 2026 | $802.48 | $811.66 | $791.31 | $803.90 | 600,200 |
September 21 2026 | $786.03 | $801.44 | $779.96 | $798.17 | 704,400 |
September 18 2026 | $787.34 | $794.73 | $779.65 | $784.85 | 2,473,436 |
September 17 2026 | $781.18 | $789.99 | $774.78 | $789.45 | 702,816 |
September 16 2026 | $775.82 | $779.98 | $771.80 | $774.61 | 382,900 |
September 15 2026 | $788.53 | $788.58 | $769.57 | $774.11 | 540,600 |
September 14 2026 | $791.98 | $798.84 | $779.45 | $793.74 | 591,100 |
September 11 2026 | $800.00 | $800.22 | $780.81 | $781.49 | 444,000 |
September 10 2026 | $794.36 | $806.14 | $792.00 | $793.26 | 526,900 |
September 09 2026 | $803.83 | $808.63 | $796.73 | $807.65 | 621,400 |
September 08 2026 | $814.36 | $821.17 | $799.42 | $810.31 | 556,500 |
September 04 2026 | $840.06 | $841.54 | $825.83 | $827.72 | 561,100 |
September 03 2026 | $858.19 | $859.34 | $837.63 | $843.47 | 496,200 |
September 02 2026 | $826.24 | $854.49 | $825.77 | $852.03 | 749,400 |
September 01 2026 | $808.86 | $824.63 | $804.32 | $823.82 | 682,600 |
Daily pricing data for Regeneron Pharmaceuticals dates back to 4/2/1991, and may be incomplete.