BIO RAD LABS INC

Ticker: BIO CUSIP: 090572207 Class: COM

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q4 2025

Shares 26,750 Value ($000) $8,105 Avg Close $312.04 Range $280.61 - $343.12

Q3 2025

Shares 26,750 Value ($000) $7,500 Avg Close $272.13 Range $237.63 - $308.44

Q2 2025

Shares 26,750 Value ($000) $6,455 Avg Close $236.40 Range $211.43 - $260.00

Q1 2025

Shares 26,750 Value ($000) $6,515 Avg Close $300.83 Range $235.84 - $373.69

Q4 2024

Shares 26,750 Value ($000) $8,788 Avg Close $339.43 Range $306.42 - $387.99

Q3 2024

Shares 26,750 Value ($000) $8,950 Avg Close $317.61 Range $262.12 - $353.09

Q2 2024

Shares 26,750 Value ($000) $7,306 Avg Close $290.85 Range $266.52 - $346.83

Q1 2024

Shares 26,750 Value ($000) $9,252 Avg Close $328.84 Range $302.65 - $364.24

Q4 2023

Shares 26,975 Value ($000) $8,710 Avg Close $313.43 Range $261.59 - $366.30

Q3 2023

Shares 27,175 Value ($000) $9,741 Avg Close $385.83 Range $349.27 - $431.79

Q2 2023

Shares 27,175 Value ($000) $10,303 Avg Close $406.95 Range $356.51 - $494.05

Q1 2023

Shares 27,260 Value ($000) $13,058 Avg Close $468.12 Range $415.04 - $509.62

Q4 2022

Shares 27,260 Value ($000) $11,463 Avg Close $403.63 Range $344.63 - $457.93

Q3 2022

Shares 27,260 Value ($000) $11,371 Avg Close $498.57 Range $406.24 - $572.70

Q2 2022

Shares 27,260 Value ($000) $13,494 Avg Close $520.81 Range $462.61 - $607.54

Q1 2022

Shares 27,360 Value ($000) $15,410 Avg Close $602.81 Range $524.19 - $752.17

Q4 2021

Shares 27,460 Value ($000) $20,748 Avg Close $748.36 Range $703.67 - $798.97

Q3 2021

Shares 27,560 Value ($000) $20,558 Avg Close $749.10 Range $644.34 - $832.70

Q2 2021

Shares 27,690 Value ($000) $17,840 Avg Close $608.62 Range $569.46 - $657.79

Q1 2021

Shares 27,740 Value ($000) $15,844 Avg Close $592.18 Range $545.00 - $689.00

Q4 2020

Shares 27,740 Value ($000) $16,171 Avg Close $569.50 Range $507.22 - $648.39

Q3 2020

Shares 28,690 Value ($000) $14,789 Avg Close $506.50 Range $443.80 - $540.06

Q2 2020

Shares 28,760 Value ($000) $12,985 Avg Close $441.30 Range $330.00 - $497.42

Q1 2020

Shares 32,022 Value ($000) $11,226 Avg Close $367.68 Range $309.38 - $413.02

Q4 2019

Shares 32,022 Value ($000) $11,849 Avg Close $352.55 Range $319.26 - $376.43

Q3 2019

Shares 33,022 Value ($000) $10,988 Avg Close $326.21 Range $303.82 - $348.39

Q2 2019

Shares 34,172 Value ($000) $10,682 Avg Close $299.43 Range $281.66 - $319.99

Q1 2019

Shares 38,722 Value ($000) $11,837 Avg Close $269.86 Range $223.89 - $323.95

Q4 2018

Shares 39,222 Value ($000) $9,108 Avg Close $268.31 Range $220.05 - $315.00

Q3 2018

Shares 39,812 Value ($000) $12,461 Avg Close $310.39 Range $285.83 - $345.15

Q2 2018

Shares 42,112 Value ($000) $12,151 Avg Close $276.12 Range $240.01 - $304.36

Q1 2018

Shares 44,112 Value ($000) $11,032 Avg Close $254.62 Range $231.00 - $279.59

Q4 2017

Shares 46,762 Value ($000) $11,161 Avg Close $242.32 Range $214.44 - $273.87

Q3 2017

Shares 52,162 Value ($000) $11,591 Avg Close $225.03 Range $208.95 - $242.79

Q2 2017

Shares 54,562 Value ($000) $12,348 Avg Close $217.91 Range $198.25 - $230.40

Q1 2017

Shares 55,162 Value ($000) $10,996 Avg Close $192.61 Range $181.87 - $209.50

Q4 2016

Shares 59,062 Value ($000) $10,766 Avg Close $170.48 Range $154.89 - $184.89

Q3 2016

Shares 61,112 Value ($000) $10,011 Avg Close $151.78 Range $140.53 - $164.45

Q2 2016

Shares 63,200 Value ($000) $9,039 Avg Close $142.64 Range $135.02 - $150.00

Q1 2016

Shares 66,500 Value ($000) $9,092 Avg Close $131.28 Range $122.03 - $139.63

Q4 2015

Shares 67,000 Value ($000) $9,290 Avg Close $138.61 Range $132.49 - $142.48

Q3 2015

Shares 68,200 Value ($000) $9,160 Avg Close $143.92 Range $131.25 - $152.38

Q2 2015

Shares 68,900 Value ($000) $10,377 Avg Close $143.07 Range $133.38 - $151.97

Q1 2015

Shares 70,400 Value ($000) $9,517 Avg Close $123.95 Range $112.51 - $137.23

Q4 2014

Shares 70,400 Value ($000) $8,487 Avg Close $115.09 Range $102.71 - $122.93

Q3 2014

Shares 89,900 Value ($000) $10,195 Avg Close $118.49 Range $113.37 - $122.73

Q2 2014

Shares 93,200 Value ($000) $11,157 Avg Close $122.10 Range $117.98 - $131.42

Q1 2014

Shares 94,600 Value ($000) $12,120 Avg Close $128.18 Range $120.43 - $134.13

Q4 2013

Shares 97,400 Value ($000) $12,040 Avg Close $121.86 Range $115.25 - $125.00

Q3 2013

Shares 97,000 Value ($000) $11,403 Avg Close $117.94 Range $111.49 - $126.98

Q2 2013

Shares 97,000 Value ($000) $10,883 Avg Close $117.30 Range $110.02 - $127.17

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	26,750	$8,105	$312.04	$280.61 - $343.12
Q3 2025	26,750	$7,500	$272.13	$237.63 - $308.44
Q2 2025	26,750	$6,455	$236.40	$211.43 - $260.00
Q1 2025	26,750	$6,515	$300.83	$235.84 - $373.69
Q4 2024	26,750	$8,788	$339.43	$306.42 - $387.99
Q3 2024	26,750	$8,950	$317.61	$262.12 - $353.09
Q2 2024	26,750	$7,306	$290.85	$266.52 - $346.83
Q1 2024	26,750	$9,252	$328.84	$302.65 - $364.24
Q4 2023	26,975	$8,710	$313.43	$261.59 - $366.30
Q3 2023	27,175	$9,741	$385.83	$349.27 - $431.79
Q2 2023	27,175	$10,303	$406.95	$356.51 - $494.05
Q1 2023	27,260	$13,058	$468.12	$415.04 - $509.62
Q4 2022	27,260	$11,463	$403.63	$344.63 - $457.93
Q3 2022	27,260	$11,371	$498.57	$406.24 - $572.70
Q2 2022	27,260	$13,494	$520.81	$462.61 - $607.54
Q1 2022	27,360	$15,410	$602.81	$524.19 - $752.17
Q4 2021	27,460	$20,748	$748.36	$703.67 - $798.97
Q3 2021	27,560	$20,558	$749.10	$644.34 - $832.70
Q2 2021	27,690	$17,840	$608.62	$569.46 - $657.79
Q1 2021	27,740	$15,844	$592.18	$545.00 - $689.00
Q4 2020	27,740	$16,171	$569.50	$507.22 - $648.39
Q3 2020	28,690	$14,789	$506.50	$443.80 - $540.06
Q2 2020	28,760	$12,985	$441.30	$330.00 - $497.42
Q1 2020	32,022	$11,226	$367.68	$309.38 - $413.02
Q4 2019	32,022	$11,849	$352.55	$319.26 - $376.43
Q3 2019	33,022	$10,988	$326.21	$303.82 - $348.39
Q2 2019	34,172	$10,682	$299.43	$281.66 - $319.99
Q1 2019	38,722	$11,837	$269.86	$223.89 - $323.95
Q4 2018	39,222	$9,108	$268.31	$220.05 - $315.00
Q3 2018	39,812	$12,461	$310.39	$285.83 - $345.15
Q2 2018	42,112	$12,151	$276.12	$240.01 - $304.36
Q1 2018	44,112	$11,032	$254.62	$231.00 - $279.59
Q4 2017	46,762	$11,161	$242.32	$214.44 - $273.87
Q3 2017	52,162	$11,591	$225.03	$208.95 - $242.79
Q2 2017	54,562	$12,348	$217.91	$198.25 - $230.40
Q1 2017	55,162	$10,996	$192.61	$181.87 - $209.50
Q4 2016	59,062	$10,766	$170.48	$154.89 - $184.89
Q3 2016	61,112	$10,011	$151.78	$140.53 - $164.45
Q2 2016	63,200	$9,039	$142.64	$135.02 - $150.00
Q1 2016	66,500	$9,092	$131.28	$122.03 - $139.63
Q4 2015	67,000	$9,290	$138.61	$132.49 - $142.48
Q3 2015	68,200	$9,160	$143.92	$131.25 - $152.38
Q2 2015	68,900	$10,377	$143.07	$133.38 - $151.97
Q1 2015	70,400	$9,517	$123.95	$112.51 - $137.23
Q4 2014	70,400	$8,487	$115.09	$102.71 - $122.93
Q3 2014	89,900	$10,195	$118.49	$113.37 - $122.73
Q2 2014	93,200	$11,157	$122.10	$117.98 - $131.42
Q1 2014	94,600	$12,120	$128.18	$120.43 - $134.13
Q4 2013	97,400	$12,040	$121.86	$115.25 - $125.00
Q3 2013	97,000	$11,403	$117.94	$111.49 - $126.98
Q2 2013	97,000	$10,883	$117.30	$110.02 - $127.17