REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

Rafferty Asset Management, LLC's Holding History (CIK: 0001389426)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 35,319 Value ($000) $27,262 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 46,472 Value ($000) $26,130 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 52,628 Value ($000) $27,630 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 44,702 Value ($000) $28,351 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 47,608 Value ($000) $33,913 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 35,699 Value ($000) $37,528 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 41,217 Value ($000) $43,320 Avg Close $964.05 Range $870.40 - $1075.21

Q1 2024

Shares 33,272 Value ($000) $32,024 Avg Close $945.64 Range $866.58 - $992.82

Q4 2023

Shares 34,176 Value ($000) $30,016 Avg Close $818.96 Range $764.95 - $894.90

Q3 2023

Shares 32,055 Value ($000) $26,380 Avg Close $781.58 Range $684.72 - $842.83

Q2 2023

Shares 30,644 Value ($000) $22,019 Avg Close $766.75 Range $681.03 - $832.93

Q1 2023

Shares 25,673 Value ($000) $21,095 Avg Close $750.05 Range $664.32 - $830.39

Q4 2022

Shares 26,037 Value ($000) $18,785 Avg Close $733.79 Range $690.81 - $774.70

Q3 2022

Shares 24,792 Value ($000) $17,078 Avg Close $625.92 Range $560.71 - $750.51

Q2 2022

Shares 20,325 Value ($000) $12,015 Avg Close $646.43 Range $535.04 - $743.30

Q1 2022

Shares 21,222 Value ($000) $14,822 Avg Close $629.16 Range $589.59 - $706.29

Q4 2021

Shares 18,086 Value ($000) $11,422 Avg Close $611.44 Range $536.21 - $670.14

Q3 2021

Shares 14,599 Value ($000) $8,835 Avg Close $617.39 Range $551.89 - $682.83

Q2 2021

Shares 13,934 Value ($000) $7,783 Avg Close $503.83 Range $466.78 - $566.85

Q1 2021

Shares 16,625 Value ($000) $7,866 Avg Close $484.19 Range $438.57 - $555.83

Q4 2020

Shares 11,159 Value ($000) $5,391 Avg Close $536.82 Range $468.18 - $616.55

Q3 2020

Shares 10,662 Value ($000) $5,968 Avg Close $602.99 Range $537.02 - $660.97

Q2 2020

Shares 8,954 Value ($000) $5,584 Avg Close $564.49 Range $473.82 - $642.77

Q1 2020

Shares 8,221 Value ($000) $4,014 Avg Close $410.21 Range $326.32 - $515.14

Q4 2019

Shares 19,867 Value ($000) $7,460 Avg Close $334.59 Range $270.76 - $380.14

Q3 2019

Shares 30,356 Value ($000) $8,421 Avg Close $294.28 Range $269.87 - $318.99

Q2 2019

Shares 24,199 Value ($000) $7,574 Avg Close $331.08 Range $293.64 - $413.60

Q1 2019

Shares 17,489 Value ($000) $7,181 Avg Close $409.51 Range $363.99 - $439.56

Q4 2018

Shares 4,563 Value ($000) $1,704 Avg Close $364.00 Range $325.77 - $407.74

Q3 2018

Shares 5,364 Value ($000) $2,167 Avg Close $378.49 Range $340.69 - $414.19

Q2 2018

Shares 5,404 Value ($000) $1,864 Avg Close $311.03 Range $280.34 - $347.31

Q1 2018

Shares 4,973 Value ($000) $1,713 Avg Close $345.90 Range $311.80 - $394.59

Q4 2017

Shares 3,787 Value ($000) $1,424 Avg Close $402.77 Range $351.19 - $474.37

Q3 2017

Shares 5,119 Value ($000) $2,289 Avg Close $473.21 Range $424.12 - $523.22

Q2 2017

Shares 3,111 Value ($000) $1,528 Avg Close $435.19 Range $358.01 - $540.55

Q1 2017

Shares 3,024 Value ($000) $1,172 Avg Close $368.62 Range $338.21 - $399.00

Q4 2016

Shares 2,658 Value ($000) $976 Avg Close $378.17 Range $323.56 - $450.46

Q3 2016

Shares 1,797 Value ($000) $722 Avg Close $398.92 Range $346.51 - $441.54

Q2 2016

Shares 1,659 Value ($000) $579 Avg Close $383.00 Range $327.27 - $431.54

Q1 2016

Shares 3,338 Value ($000) $1,203 Avg Close $409.79 Range $347.04 - $529.97

Q4 2015

Shares 4,186 Value ($000) $2,295 Avg Close $538.82 Range $445.63 - $589.32

Q3 2015

Shares 3,917 Value ($000) $1,822 Avg Close $534.07 Range $433.12 - $602.59

Q2 2015

Shares 3,658 Value ($000) $1,866 Avg Close $485.93 Range $431.08 - $541.00

Q1 2015

Shares 1,828 Value ($000) $825 Avg Close $421.46 Range $390.83 - $492.77

Q4 2014

Shares 1,554 Value ($000) $638 Avg Close $391.09 Range $318.29 - $435.23

Q3 2014

Shares 1,131 Value ($000) $408 Avg Close $333.32 Range $283.49 - $367.27

Q2 2014

Shares 851 Value ($000) $240 Avg Close $294.74 Range $268.01 - $318.24

Q1 2014

Shares 1,341 Value ($000) $403 Avg Close $306.39 Range $261.52 - $350.55

Q4 2013

Shares 962 Value ($000) $265 Avg Close $286.03 Range $256.27 - $317.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	35,319	$27,262	$678.68	$540.32 - $792.77
Q3 2025	46,472	$26,130	$564.28	$519.56 - $609.69
Q2 2025	52,628	$27,630	$556.12	$475.17 - $638.52
Q1 2025	44,702	$28,351	$684.44	$615.89 - $745.12
Q4 2024	47,608	$33,913	$834.60	$689.18 - $1055.74
Q3 2024	35,699	$37,528	$1106.73	$1002.85 - $1204.52
Q2 2024	41,217	$43,320	$964.05	$870.40 - $1075.21
Q1 2024	33,272	$32,024	$945.64	$866.58 - $992.82
Q4 2023	34,176	$30,016	$818.96	$764.95 - $894.90
Q3 2023	32,055	$26,380	$781.58	$684.72 - $842.83
Q2 2023	30,644	$22,019	$766.75	$681.03 - $832.93
Q1 2023	25,673	$21,095	$750.05	$664.32 - $830.39
Q4 2022	26,037	$18,785	$733.79	$690.81 - $774.70
Q3 2022	24,792	$17,078	$625.92	$560.71 - $750.51
Q2 2022	20,325	$12,015	$646.43	$535.04 - $743.30
Q1 2022	21,222	$14,822	$629.16	$589.59 - $706.29
Q4 2021	18,086	$11,422	$611.44	$536.21 - $670.14
Q3 2021	14,599	$8,835	$617.39	$551.89 - $682.83
Q2 2021	13,934	$7,783	$503.83	$466.78 - $566.85
Q1 2021	16,625	$7,866	$484.19	$438.57 - $555.83
Q4 2020	11,159	$5,391	$536.82	$468.18 - $616.55
Q3 2020	10,662	$5,968	$602.99	$537.02 - $660.97
Q2 2020	8,954	$5,584	$564.49	$473.82 - $642.77
Q1 2020	8,221	$4,014	$410.21	$326.32 - $515.14
Q4 2019	19,867	$7,460	$334.59	$270.76 - $380.14
Q3 2019	30,356	$8,421	$294.28	$269.87 - $318.99
Q2 2019	24,199	$7,574	$331.08	$293.64 - $413.60
Q1 2019	17,489	$7,181	$409.51	$363.99 - $439.56
Q4 2018	4,563	$1,704	$364.00	$325.77 - $407.74
Q3 2018	5,364	$2,167	$378.49	$340.69 - $414.19
Q2 2018	5,404	$1,864	$311.03	$280.34 - $347.31
Q1 2018	4,973	$1,713	$345.90	$311.80 - $394.59
Q4 2017	3,787	$1,424	$402.77	$351.19 - $474.37
Q3 2017	5,119	$2,289	$473.21	$424.12 - $523.22
Q2 2017	3,111	$1,528	$435.19	$358.01 - $540.55
Q1 2017	3,024	$1,172	$368.62	$338.21 - $399.00
Q4 2016	2,658	$976	$378.17	$323.56 - $450.46
Q3 2016	1,797	$722	$398.92	$346.51 - $441.54
Q2 2016	1,659	$579	$383.00	$327.27 - $431.54
Q1 2016	3,338	$1,203	$409.79	$347.04 - $529.97
Q4 2015	4,186	$2,295	$538.82	$445.63 - $589.32
Q3 2015	3,917	$1,822	$534.07	$433.12 - $602.59
Q2 2015	3,658	$1,866	$485.93	$431.08 - $541.00
Q1 2015	1,828	$825	$421.46	$390.83 - $492.77
Q4 2014	1,554	$638	$391.09	$318.29 - $435.23
Q3 2014	1,131	$408	$333.32	$283.49 - $367.27
Q2 2014	851	$240	$294.74	$268.01 - $318.24
Q1 2014	1,341	$403	$306.39	$261.52 - $350.55
Q4 2013	962	$265	$286.03	$256.27 - $317.74