BIO RAD LABS INC

Ticker: BIO CUSIP: 090572207 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2025

Shares 11,560 Value ($000) $3,503 Avg Close $312.04 Range $280.61 - $343.12

Q3 2025

Shares 12,614 Value ($000) $3,537 Avg Close $272.13 Range $237.63 - $308.44

Q2 2025

Shares 926 Value ($000) $223 Avg Close $236.40 Range $211.43 - $260.00

Q1 2025

Shares 27,095 Value ($000) $6,599 Avg Close $300.83 Range $235.84 - $373.69

Q4 2024

Shares 2,279 Value ($000) $749 Avg Close $339.43 Range $306.42 - $387.99

Q4 2023

Shares 6,300 Value ($000) $2,034 Avg Close $313.43 Range $261.59 - $366.30

Q3 2023

Shares 125,650 Value ($000) $45,039 Avg Close $385.83 Range $349.27 - $431.79

Q2 2023

Shares 19,613 Value ($000) $7,436 Avg Close $406.95 Range $356.51 - $494.05

Q1 2023

Shares 33,362 Value ($000) $15,981 Avg Close $468.12 Range $415.04 - $509.62

Q4 2022

Shares 595 Value ($000) $250 Avg Close $403.63 Range $344.63 - $457.93

Q3 2022

Shares 172,600 Value ($000) $71,998 Avg Close $498.57 Range $406.24 - $572.70

Q2 2022

Shares 224,769 Value ($000) $111,261 Avg Close $520.81 Range $462.61 - $607.54

Q1 2022

Shares 467,343 Value ($000) $263,225 Avg Close $602.81 Range $524.19 - $752.17

Q4 2021

Shares 333,370 Value ($000) $251,884 Avg Close $748.36 Range $703.67 - $798.97

Q3 2021

Shares 439,344 Value ($000) $327,728 Avg Close $749.10 Range $644.34 - $832.70

Q2 2021

Shares 435,099 Value ($000) $280,330 Avg Close $608.62 Range $569.46 - $657.79

Q1 2021

Shares 568,918 Value ($000) $324,949 Avg Close $592.18 Range $545.00 - $689.00

Q4 2020

Shares 369,411 Value ($000) $215,343 Avg Close $569.50 Range $507.22 - $648.39

Q3 2020

Shares 280,567 Value ($000) $144,621 Avg Close $506.50 Range $443.80 - $540.06

Q2 2020

Shares 233,102 Value ($000) $105,244 Avg Close $441.30 Range $330.00 - $497.42

Q1 2020

Shares 112,252 Value ($000) $39,350 Avg Close $367.68 Range $309.38 - $413.02

Q4 2019

Shares 859 Value ($000) $318 Avg Close $352.55 Range $319.26 - $376.43

Q3 2019

Shares 78,756 Value ($000) $26,206 Avg Close $326.21 Range $303.82 - $348.39

Q2 2019

Shares 21,475 Value ($000) $6,713 Avg Close $299.43 Range $281.66 - $319.99

Q4 2018

Shares 9,196 Value ($000) $2,135 Avg Close $268.31 Range $220.05 - $315.00

Q3 2018

Shares 23,963 Value ($000) $7,500 Avg Close $310.39 Range $285.83 - $345.15

Q2 2018

Shares 3,113 Value ($000) $898 Avg Close $276.12 Range $240.01 - $304.36

Q2 2017

Shares 1,114 Value ($000) $252 Avg Close $217.91 Range $198.25 - $230.40

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	11,560	$3,503	$312.04	$280.61 - $343.12
Q3 2025	12,614	$3,537	$272.13	$237.63 - $308.44
Q2 2025	926	$223	$236.40	$211.43 - $260.00
Q1 2025	27,095	$6,599	$300.83	$235.84 - $373.69
Q4 2024	2,279	$749	$339.43	$306.42 - $387.99
Q4 2023	6,300	$2,034	$313.43	$261.59 - $366.30
Q3 2023	125,650	$45,039	$385.83	$349.27 - $431.79
Q2 2023	19,613	$7,436	$406.95	$356.51 - $494.05
Q1 2023	33,362	$15,981	$468.12	$415.04 - $509.62
Q4 2022	595	$250	$403.63	$344.63 - $457.93
Q3 2022	172,600	$71,998	$498.57	$406.24 - $572.70
Q2 2022	224,769	$111,261	$520.81	$462.61 - $607.54
Q1 2022	467,343	$263,225	$602.81	$524.19 - $752.17
Q4 2021	333,370	$251,884	$748.36	$703.67 - $798.97
Q3 2021	439,344	$327,728	$749.10	$644.34 - $832.70
Q2 2021	435,099	$280,330	$608.62	$569.46 - $657.79
Q1 2021	568,918	$324,949	$592.18	$545.00 - $689.00
Q4 2020	369,411	$215,343	$569.50	$507.22 - $648.39
Q3 2020	280,567	$144,621	$506.50	$443.80 - $540.06
Q2 2020	233,102	$105,244	$441.30	$330.00 - $497.42
Q1 2020	112,252	$39,350	$367.68	$309.38 - $413.02
Q4 2019	859	$318	$352.55	$319.26 - $376.43
Q3 2019	78,756	$26,206	$326.21	$303.82 - $348.39
Q2 2019	21,475	$6,713	$299.43	$281.66 - $319.99
Q4 2018	9,196	$2,135	$268.31	$220.05 - $315.00
Q3 2018	23,963	$7,500	$310.39	$285.83 - $345.15
Q2 2018	3,113	$898	$276.12	$240.01 - $304.36
Q2 2017	1,114	$252	$217.91	$198.25 - $230.40