MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q2 2023

Shares 114,460 Value ($000) $19 Avg Close $174.09 Range $153.35 - $198.00

Q1 2023

Shares 109,311 Value ($000) $20 Avg Close $168.70 Range $144.51 - $184.97

Q4 2022

Shares 86,229 Value ($000) $13 Avg Close $137.60 Range $108.89 - $150.87

Q3 2022

Shares 85,902 Value ($000) $12,126 Avg Close $146.09 Range $122.68 - $172.74

Q2 2022

Shares 120,035 Value ($000) $15,685 Avg Close $133.79 Range $112.07 - $154.51

Q1 2022

Shares 229,138 Value ($000) $33,349 Avg Close $192.01 Range $133.94 - $291.15

Q4 2021

Shares 142,507 Value ($000) $41,723 Avg Close $284.79 Range $262.52 - $305.21

Q3 2021

Shares 180,777 Value ($000) $48,938 Avg Close $271.15 Range $241.42 - $288.27

Q2 2021

Shares 172,477 Value ($000) $41,817 Avg Close $228.17 Range $205.10 - $250.49

Q1 2021

Shares 116,325 Value ($000) $26,715 Avg Close $251.21 Range $217.65 - $284.86

Q4 2020

Shares 60,740 Value ($000) $16,301 Avg Close $249.38 Range $218.23 - $273.33

Q1 2020

Shares 7,700 Value ($000) $1,364 Avg Close $171.51 Range $143.90 - $187.85

Q4 2019

Shares 1,400 Value ($000) $221 Avg Close $150.33 Range $140.16 - $160.06

Q3 2019

Shares 32,986 Value ($000) $4,908 Avg Close $151.90 Range $139.36 - $160.25

Q2 2019

Shares 160,365 Value ($000) $23,866 Avg Close $137.22 Range $118.93 - $148.93

Q1 2019

Shares 173,168 Value ($000) $23,946 Avg Close $125.54 Range $101.87 - $139.48

Q1 2018

Shares 75,363 Value ($000) $6,628 Avg Close $87.17 Range $80.69 - $96.45

Q4 2017

Shares 997,073 Value ($000) $84,552 Avg Close $86.74 Range $84.05 - $91.04

Q3 2017

Shares 1,111,513 Value ($000) $96,213 Avg Close $88.42 Range $81.01 - $100.00

Q2 2017

Shares 1,113,113 Value ($000) $101,494 Avg Close $91.81 Range $82.71 - $104.71

Q1 2017

Shares 1,074,122 Value ($000) $100,173 Avg Close $82.32 Range $66.79 - $96.68

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2023	114,460	$19	$174.09	$153.35 - $198.00
Q1 2023	109,311	$20	$168.70	$144.51 - $184.97
Q4 2022	86,229	$13	$137.60	$108.89 - $150.87
Q3 2022	85,902	$12,126	$146.09	$122.68 - $172.74
Q2 2022	120,035	$15,685	$133.79	$112.07 - $154.51
Q1 2022	229,138	$33,349	$192.01	$133.94 - $291.15
Q4 2021	142,507	$41,723	$284.79	$262.52 - $305.21
Q3 2021	180,777	$48,938	$271.15	$241.42 - $288.27
Q2 2021	172,477	$41,817	$228.17	$205.10 - $250.49
Q1 2021	116,325	$26,715	$251.21	$217.65 - $284.86
Q4 2020	60,740	$16,301	$249.38	$218.23 - $273.33
Q1 2020	7,700	$1,364	$171.51	$143.90 - $187.85
Q4 2019	1,400	$221	$150.33	$140.16 - $160.06
Q3 2019	32,986	$4,908	$151.90	$139.36 - $160.25
Q2 2019	160,365	$23,866	$137.22	$118.93 - $148.93
Q1 2019	173,168	$23,946	$125.54	$101.87 - $139.48
Q1 2018	75,363	$6,628	$87.17	$80.69 - $96.45
Q4 2017	997,073	$84,552	$86.74	$84.05 - $91.04
Q3 2017	1,111,513	$96,213	$88.42	$81.01 - $100.00
Q2 2017	1,113,113	$101,494	$91.81	$82.71 - $104.71
Q1 2017	1,074,122	$100,173	$82.32	$66.79 - $96.68