BIO RAD LABS INC

Ticker: BIO CUSIP: 090572207 Class: COM

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q4 2025

Shares 13,648 Value ($000) $4,135 Avg Close $312.04 Range $280.61 - $343.12

Q3 2025

Shares 15,872 Value ($000) $4,450 Avg Close $272.13 Range $237.63 - $308.44

Q2 2025

Shares 16,102 Value ($000) $3,886 Avg Close $236.40 Range $211.43 - $260.00

Q1 2025

Shares 14,492 Value ($000) $3,530 Avg Close $300.83 Range $235.84 - $373.69

Q4 2024

Shares 15,353 Value ($000) $5,044 Avg Close $339.43 Range $306.42 - $387.99

Q3 2024

Shares 11,861 Value ($000) $3,968 Avg Close $317.61 Range $262.12 - $353.09

Q2 2024

Shares 20,315 Value ($000) $5,548 Avg Close $290.85 Range $266.52 - $346.83

Q1 2024

Shares 12,597 Value ($000) $4,357 Avg Close $328.84 Range $302.65 - $364.24

Q4 2023

Shares 14,400 Value ($000) $4,650 Avg Close $313.43 Range $261.59 - $366.30

Q3 2023

Shares 11,792 Value ($000) $4,227 Avg Close $385.83 Range $349.27 - $431.79

Q2 2023

Shares 12,923 Value ($000) $4,899 Avg Close $406.95 Range $356.51 - $494.05

Q1 2023

Shares 13,056 Value ($000) $6,254 Avg Close $468.12 Range $415.04 - $509.62

Q4 2022

Shares 11,190 Value ($000) $4,705 Avg Close $403.63 Range $344.63 - $457.93

Q3 2022

Shares 13,175 Value ($000) $5,496 Avg Close $498.57 Range $406.24 - $572.70

Q2 2022

Shares 16,126 Value ($000) $7,982 Avg Close $520.81 Range $462.61 - $607.54

Q1 2022

Shares 17,317 Value ($000) $9,753 Avg Close $602.81 Range $524.19 - $752.17

Q4 2021

Shares 34,058 Value ($000) $25,733 Avg Close $748.36 Range $703.67 - $798.97

Q3 2021

Shares 41,286 Value ($000) $30,797 Avg Close $749.10 Range $644.34 - $832.70

Q2 2021

Shares 33,045 Value ($000) $21,291 Avg Close $608.62 Range $569.46 - $657.79

Q1 2021

Shares 45,440 Value ($000) $25,954 Avg Close $592.18 Range $545.00 - $689.00

Q4 2020

Shares 46,891 Value ($000) $27,335 Avg Close $569.50 Range $507.22 - $648.39

Q3 2020

Shares 45,931 Value ($000) $23,676 Avg Close $506.50 Range $443.80 - $540.06

Q2 2020

Shares 33,797 Value ($000) $15,259 Avg Close $441.30 Range $330.00 - $497.42

Q1 2020

Shares 38,109 Value ($000) $13,359 Avg Close $367.68 Range $309.38 - $413.02

Q4 2019

Shares 18,923 Value ($000) $7,002 Avg Close $352.55 Range $319.26 - $376.43

Q3 2019

Shares 3,008 Value ($000) $1,001 Avg Close $326.21 Range $303.82 - $348.39

Q2 2019

Shares 3,025 Value ($000) $946 Avg Close $299.43 Range $281.66 - $319.99

Q1 2019

Shares 3,945 Value ($000) $1,206 Avg Close $269.86 Range $223.89 - $323.95

Q4 2018

Shares 4,055 Value ($000) $942 Avg Close $268.31 Range $220.05 - $315.00

Q3 2018

Shares 4,055 Value ($000) $1,269 Avg Close $310.39 Range $285.83 - $345.15

Q2 2018

Shares 4,145 Value ($000) $1,196 Avg Close $276.12 Range $240.01 - $304.36

Q1 2018

Shares 4,205 Value ($000) $1,052 Avg Close $254.62 Range $231.00 - $279.59

Q4 2017

Shares 4,322 Value ($000) $1,032 Avg Close $242.32 Range $214.44 - $273.87

Q3 2017

Shares 4,266 Value ($000) $948 Avg Close $225.03 Range $208.95 - $242.79

Q2 2017

Shares 4,187 Value ($000) $948 Avg Close $217.91 Range $198.25 - $230.40

Q1 2017

Shares 4,147 Value ($000) $827 Avg Close $192.61 Range $181.87 - $209.50

Q4 2016

Shares 11,370 Value ($000) $2,073 Avg Close $170.48 Range $154.89 - $184.89

Q3 2016

Shares 13,350 Value ($000) $2,187 Avg Close $151.78 Range $140.53 - $164.45

Q2 2016

Shares 13,550 Value ($000) $1,938 Avg Close $142.64 Range $135.02 - $150.00

Q1 2016

Shares 14,410 Value ($000) $1,970 Avg Close $131.28 Range $122.03 - $139.63

Q4 2015

Shares 15,070 Value ($000) $2,090 Avg Close $138.61 Range $132.49 - $142.48

Q3 2015

Shares 15,430 Value ($000) $2,072 Avg Close $143.92 Range $131.25 - $152.38

Q2 2015

Shares 15,850 Value ($000) $2,387 Avg Close $143.07 Range $133.38 - $151.97

Q1 2015

Shares 15,770 Value ($000) $2,132 Avg Close $123.95 Range $112.51 - $137.23

Q4 2014

Shares 16,180 Value ($000) $1,951 Avg Close $115.09 Range $102.71 - $122.93

Q3 2014

Shares 15,280 Value ($000) $1,733 Avg Close $118.49 Range $113.37 - $122.73

Q2 2014

Shares 15,160 Value ($000) $1,815 Avg Close $122.10 Range $117.98 - $131.42

Q1 2014

Shares 14,640 Value ($000) $1,876 Avg Close $128.18 Range $120.43 - $134.13

Q4 2013

Shares 14,680 Value ($000) $1,815 Avg Close $121.86 Range $115.25 - $125.00

Q3 2013

Shares 15,060 Value ($000) $1,770 Avg Close $117.94 Range $111.49 - $126.98

Q2 2013

Shares 16,220 Value ($000) $1,820 Avg Close $117.30 Range $110.02 - $127.17

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13,648	$4,135	$312.04	$280.61 - $343.12
Q3 2025	15,872	$4,450	$272.13	$237.63 - $308.44
Q2 2025	16,102	$3,886	$236.40	$211.43 - $260.00
Q1 2025	14,492	$3,530	$300.83	$235.84 - $373.69
Q4 2024	15,353	$5,044	$339.43	$306.42 - $387.99
Q3 2024	11,861	$3,968	$317.61	$262.12 - $353.09
Q2 2024	20,315	$5,548	$290.85	$266.52 - $346.83
Q1 2024	12,597	$4,357	$328.84	$302.65 - $364.24
Q4 2023	14,400	$4,650	$313.43	$261.59 - $366.30
Q3 2023	11,792	$4,227	$385.83	$349.27 - $431.79
Q2 2023	12,923	$4,899	$406.95	$356.51 - $494.05
Q1 2023	13,056	$6,254	$468.12	$415.04 - $509.62
Q4 2022	11,190	$4,705	$403.63	$344.63 - $457.93
Q3 2022	13,175	$5,496	$498.57	$406.24 - $572.70
Q2 2022	16,126	$7,982	$520.81	$462.61 - $607.54
Q1 2022	17,317	$9,753	$602.81	$524.19 - $752.17
Q4 2021	34,058	$25,733	$748.36	$703.67 - $798.97
Q3 2021	41,286	$30,797	$749.10	$644.34 - $832.70
Q2 2021	33,045	$21,291	$608.62	$569.46 - $657.79
Q1 2021	45,440	$25,954	$592.18	$545.00 - $689.00
Q4 2020	46,891	$27,335	$569.50	$507.22 - $648.39
Q3 2020	45,931	$23,676	$506.50	$443.80 - $540.06
Q2 2020	33,797	$15,259	$441.30	$330.00 - $497.42
Q1 2020	38,109	$13,359	$367.68	$309.38 - $413.02
Q4 2019	18,923	$7,002	$352.55	$319.26 - $376.43
Q3 2019	3,008	$1,001	$326.21	$303.82 - $348.39
Q2 2019	3,025	$946	$299.43	$281.66 - $319.99
Q1 2019	3,945	$1,206	$269.86	$223.89 - $323.95
Q4 2018	4,055	$942	$268.31	$220.05 - $315.00
Q3 2018	4,055	$1,269	$310.39	$285.83 - $345.15
Q2 2018	4,145	$1,196	$276.12	$240.01 - $304.36
Q1 2018	4,205	$1,052	$254.62	$231.00 - $279.59
Q4 2017	4,322	$1,032	$242.32	$214.44 - $273.87
Q3 2017	4,266	$948	$225.03	$208.95 - $242.79
Q2 2017	4,187	$948	$217.91	$198.25 - $230.40
Q1 2017	4,147	$827	$192.61	$181.87 - $209.50
Q4 2016	11,370	$2,073	$170.48	$154.89 - $184.89
Q3 2016	13,350	$2,187	$151.78	$140.53 - $164.45
Q2 2016	13,550	$1,938	$142.64	$135.02 - $150.00
Q1 2016	14,410	$1,970	$131.28	$122.03 - $139.63
Q4 2015	15,070	$2,090	$138.61	$132.49 - $142.48
Q3 2015	15,430	$2,072	$143.92	$131.25 - $152.38
Q2 2015	15,850	$2,387	$143.07	$133.38 - $151.97
Q1 2015	15,770	$2,132	$123.95	$112.51 - $137.23
Q4 2014	16,180	$1,951	$115.09	$102.71 - $122.93
Q3 2014	15,280	$1,733	$118.49	$113.37 - $122.73
Q2 2014	15,160	$1,815	$122.10	$117.98 - $131.42
Q1 2014	14,640	$1,876	$128.18	$120.43 - $134.13
Q4 2013	14,680	$1,815	$121.86	$115.25 - $125.00
Q3 2013	15,060	$1,770	$117.94	$111.49 - $126.98
Q2 2013	16,220	$1,820	$117.30	$110.02 - $127.17