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Regeneron Pharmaceuticals, Inc. (REGN) stock

REGNNasdaqPharmaceutical PreparationsFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Oct 30, 2026Score 17/309% above fair value
$927.89+109.12 (+13.33%)

Close on Oct 30, 2026Market cap $95.53BP/E 20.5Yield –

Price history

Regeneron Pharmaceuticals share prices for every week, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$927.89
+13.33% on the day
52-week range
$591.52 – $935.35
-0.8% from the high
Change over 52 weeks
+41.9%
From $654.04 on Oct 30, 2025
Average volume
760,006
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 26, 2026$812.31$935.35$796.61$927.89+15.26%5,346,662
Oct 19, 2026$792.59$825.52$780.83$805.02+1.81%3,074,364
Oct 12, 2026$748.67$809.49$743.57$790.74+5.92%3,579,575
Oct 5, 2026$734.37$753.68$722.02$746.54+1.54%2,902,844
Sep 28, 2026$778.09$780.95$726.02$735.20-6.71%4,483,439
Sep 21, 2026$786.03$813.53$779.96$788.04+0.41%3,220,700
Sep 14, 2026$791.98$798.84$769.57$784.85+0.43%4,691,329
Sep 8, 2026$814.36$821.17$780.81$781.49-5.59%2,148,891
Aug 31, 2026$782.44$859.34$779.08$827.72+4.22%3,383,952
Aug 24, 2026$834.51$839.94$789.08$794.19-4.78%3,018,101
Aug 17, 2026$801.76$847.00$795.73$834.04+3.80%3,454,218
Aug 10, 2026$781.72$815.80$775.83$803.48+2.44%3,863,499
Aug 3, 2026$769.54$785.99$747.00$784.36+2.85%3,814,040
Jul 27, 2026$661.77$764.75$659.53$762.63+16.25%5,193,359
Jul 20, 2026$674.72$681.74$637.80$656.01-3.06%3,864,547
Jul 13, 2026$661.63$691.13$648.66$676.69+1.83%3,018,359
Jul 6, 2026$657.96$677.92$637.72$664.52+1.57%3,634,415
Jun 29, 2026$635.99$654.94$622.29$654.27+3.38%3,797,714
Jun 22, 2026$604.46$638.76$594.90$632.90+3.76%5,634,598
Jun 15, 2026$613.35$620.00$598.19$609.94-0.36%5,732,291
Jun 8, 2026$638.04$638.95$601.22$612.14-3.67%4,926,956
Jun 1, 2026$607.54$640.82$591.52$635.45+3.36%5,084,536
May 26, 2026$642.45$648.50$609.77$614.78-3.77%6,225,888
May 18, 2026$615.93$651.00$610.60$638.88-8.50%7,781,365
May 11, 2026$714.99$730.59$693.70$698.25-2.33%4,426,566
May 4, 2026$702.56$726.16$699.23$714.89+1.92%3,300,704
Apr 27, 2026$745.47$756.40$668.85$701.42-6.67%4,833,263
Apr 20, 2026$750.00$767.21$734.12$751.57+0.13%3,841,532
Apr 13, 2026$747.74$760.58$737.34$750.57+0.23%2,974,555
Apr 6, 2026$766.83$775.63$739.09$748.87-1.70%3,010,008
Mar 30, 2026$743.83$781.21$741.47$761.85+3.27%2,901,271
Mar 23, 2026$745.00$761.73$727.96$737.71+0.66%2,577,789
Mar 16, 2026$750.00$771.23$727.88$732.87-1.73%3,494,113
Mar 9, 2026$759.86$788.69$741.90$745.77-1.85%2,644,459
Mar 2, 2026$771.10$794.77$746.66$759.86-2.79%3,291,622
Feb 23, 2026$777.58$792.67$753.79$781.67+0.26%3,389,492
Feb 17, 2026$803.48$815.00$770.00$779.67-2.93%2,543,426
Feb 9, 2026$783.17$806.18$745.07$803.17+2.25%4,292,540
Feb 2, 2026$732.92$790.00$731.51$785.51+5.94%4,061,978
Jan 26, 2026$750.09$776.25$735.61$741.45-1.61%4,651,725
Jan 20, 2026$729.40$765.00$718.38$753.55+2.80%3,064,746
Jan 12, 2026$810.00$811.09$726.43$733.04-7.97%5,485,333
Jan 5, 2026$769.72$821.11$753.20$796.55+2.61%4,796,643
Dec 29, 2025$780.56$785.05$765.77$776.31-1.10%1,748,319
Dec 22, 2025$765.84$792.77$765.09$784.97+2.21%2,238,296
Dec 15, 2025$748.85$773.85$734.72$767.96+3.60%5,805,843
Dec 8, 2025$723.69$753.61$691.86$741.29+3.19%4,885,873
Dec 1, 2025$775.60$779.92$717.26$718.36-7.92%5,021,327
Nov 24, 2025$759.05$790.98$756.64$780.19+3.21%4,137,581
Nov 17, 2025$693.34$764.09$692.29$755.90+9.00%7,610,620
Nov 10, 2025$656.00$713.58$651.38$693.50+5.47%5,423,171
Nov 3, 2025$657.46$658.21$625.14$657.53+0.88%4,265,828

Seasonality

REGN return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average0.4%2.7%3.2%-4.8%-0.2%4.1%3.9%5.5%-3.6%0.9%3.1%-0.3%
Months up4 of 108 of 106 of 103 of 105 of 108 of 108 of 107 of 101 of 105 of 105 of 94 of 9
2026-3.9%5.6%-1.2%-8.5%-12.9%1.4%22.3%4.9%-5.1%22.4%
2025-5.5%4.0%-9.2%-5.6%-18.0%7.1%3.9%6.6%-3.2%15.9%19.8%-1.1%
20247.3%2.5%-0.4%-7.5%10.0%7.2%2.7%9.8%-11.3%-20.3%-10.5%-5.1%
20235.1%0.3%8.1%-2.4%-8.3%-2.3%3.3%11.4%-0.4%-5.2%5.6%6.6%
2022-3.6%1.6%12.9%-5.6%0.9%-11.1%-1.6%-0.1%18.6%8.7%0.4%-4.0%
20214.3%-10.6%5.0%1.7%4.4%11.2%2.9%17.2%-10.1%5.7%-0.5%-0.8%
2020-10.0%31.6%9.8%7.7%16.5%1.8%1.4%-1.9%-9.7%-2.9%-5.1%-6.4%
201914.9%0.3%-4.7%-16.4%-12.1%3.7%-2.6%-4.8%-4.4%10.4%20.5%1.8%
2018-2.5%-12.6%7.5%-11.8%-1.1%14.9%6.7%10.5%-0.7%-16.0%7.8%2.1%
2017-2.1%4.0%3.8%0.3%18.2%7.0%0.1%1.1%-10.0%-10.0%-10.1%3.9%