MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q4 2025

Shares 43,052 Value ($000) $5,599 Avg Close $143.19 Range $129.77 - $157.72

Q3 2025

Shares 87,750 Value ($000) $12,948 Avg Close $151.39 Range $135.34 - $172.55

Q2 2025

Shares 24,277 Value ($000) $4,084 Avg Close $159.72 Range $133.70 - $174.50

Q1 2025

Shares 49,482 Value ($000) $8,244 Avg Close $173.51 Range $159.29 - $194.88

Q4 2024

Shares 441,025 Value ($000) $72,901 Avg Close $157.91 Range $131.60 - $180.97

Q3 2024

Shares 189,549 Value ($000) $25,273 Avg Close $116.03 Range $101.61 - $135.78

Q2 2024

Shares 227,490 Value ($000) $28,650 Avg Close $131.69 Range $112.85 - $147.89

Q1 2024

Shares 1,345,216 Value ($000) $197,545 Avg Close $129.12 Range $107.57 - $153.93

Q4 2023

Shares 764,079 Value ($000) $89,558 Avg Close $93.21 Range $75.22 - $122.60

Q3 2023

Shares 256,692 Value ($000) $22,507 Avg Close $116.39 Range $83.03 - $164.16

Q2 2023

Shares 39,534 Value ($000) $6,505 Avg Close $174.09 Range $153.35 - $198.00

Q1 2023

Shares 156,321 Value ($000) $28,847 Avg Close $168.70 Range $144.51 - $184.97

Q4 2022

Shares 33,212 Value ($000) $4,914 Avg Close $137.60 Range $108.89 - $150.87

Q3 2022

Shares 188,717 Value ($000) $26,639 Avg Close $146.09 Range $122.68 - $172.74

Q2 2022

Shares 124,965 Value ($000) $16,330 Avg Close $133.79 Range $112.07 - $154.51

Q1 2022

Shares 146,455 Value ($000) $21,315 Avg Close $192.01 Range $133.94 - $291.15

Q4 2021

Shares 56,924 Value ($000) $16,666 Avg Close $284.79 Range $262.52 - $305.21

Q3 2021

Shares 18,255 Value ($000) $4,942 Avg Close $271.15 Range $241.42 - $288.27

Q2 2021

Shares 12,818 Value ($000) $3,108 Avg Close $228.17 Range $205.10 - $250.49

Q1 2021

Shares 36,669 Value ($000) $8,421 Avg Close $251.21 Range $217.65 - $284.86

Q4 2020

Shares 7,940 Value ($000) $2,131 Avg Close $249.38 Range $218.23 - $273.33

Q2 2020

Shares 21,080 Value ($000) $4,806 Avg Close $219.47 Range $173.15 - $258.00

Q1 2020

Shares 50,399 Value ($000) $8,926 Avg Close $171.51 Range $143.90 - $187.85

Q4 2019

Shares 2,927 Value ($000) $463 Avg Close $150.33 Range $140.16 - $160.06

Q3 2019

Shares 15,281 Value ($000) $2,274 Avg Close $151.90 Range $139.36 - $160.25

Q2 2019

Shares 40,905 Value ($000) $6,087 Avg Close $137.22 Range $118.93 - $148.93

Q1 2019

Shares 496,077 Value ($000) $68,598 Avg Close $125.54 Range $101.87 - $139.48

Q4 2018

Shares 504,456 Value ($000) $54,164 Avg Close $111.51 Range $98.23 - $126.89

Q3 2018

Shares 520,487 Value ($000) $64,821 Avg Close $110.93 Range $96.14 - $124.74

Q2 2018

Shares 773,023 Value ($000) $75,485 Avg Close $95.08 Range $83.16 - $102.32

Q1 2018

Shares 990,329 Value ($000) $87,099 Avg Close $87.17 Range $80.69 - $96.45

Q4 2017

Shares 48,365 Value ($000) $4,101 Avg Close $86.74 Range $84.05 - $91.04

Q2 2017

Shares 7,843 Value ($000) $715 Avg Close $91.81 Range $82.71 - $104.71

Q1 2017

Shares 38,732 Value ($000) $3,612 Avg Close $82.32 Range $66.79 - $96.68

Q4 2016

Shares 3,207 Value ($000) $216 Avg Close $61.46 Range $53.78 - $68.88

Q3 2016

Shares 10,610 Value ($000) $631 Avg Close $56.42 Range $51.10 - $60.52

Q2 2016

Shares 38,038 Value ($000) $1,998 Avg Close $47.10 Range $41.19 - $53.55

Q1 2016

Shares 57,928 Value ($000) $2,424 Avg Close $37.61 Range $33.03 - $41.93

Q4 2015

Shares 672 Value ($000) $28 Avg Close $40.86 Range $37.40 - $43.76

Q3 2015

Shares 6,900 Value ($000) $266 Avg Close $40.86 Range $35.33 - $46.00

Q2 2015

Shares 18,859 Value ($000) $730 Avg Close $35.83 Range $32.33 - $39.91

Q1 2015

Shares 59,541 Value ($000) $1,964 Avg Close $28.75 Range $25.12 - $33.16

Q4 2014

Shares 248,580 Value ($000) $6,548 Avg Close $24.68 Range $21.03 - $27.15

Q3 2014

Shares 272,452 Value ($000) $5,798 Avg Close $22.83 Range $19.30 - $24.75

Q2 2014

Shares 156,652 Value ($000) $3,698 Avg Close $24.80 Range $21.45 - $28.78

Q1 2014

Shares 8,076 Value ($000) $220 Avg Close $28.52 Range $25.08 - $32.20

Q4 2013

Shares 54,539 Value ($000) $1,594 Avg Close $27.99 Range $25.42 - $29.66

Q3 2013

Shares 85,541 Value ($000) $2,279 Avg Close $24.65 Range $21.21 - $27.17

Q2 2013

Shares 208,652 Value ($000) $4,423 Avg Close $21.04 Range $19.03 - $22.70

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	43,052	$5,599	$143.19	$129.77 - $157.72
Q3 2025	87,750	$12,948	$151.39	$135.34 - $172.55
Q2 2025	24,277	$4,084	$159.72	$133.70 - $174.50
Q1 2025	49,482	$8,244	$173.51	$159.29 - $194.88
Q4 2024	441,025	$72,901	$157.91	$131.60 - $180.97
Q3 2024	189,549	$25,273	$116.03	$101.61 - $135.78
Q2 2024	227,490	$28,650	$131.69	$112.85 - $147.89
Q1 2024	1,345,216	$197,545	$129.12	$107.57 - $153.93
Q4 2023	764,079	$89,558	$93.21	$75.22 - $122.60
Q3 2023	256,692	$22,507	$116.39	$83.03 - $164.16
Q2 2023	39,534	$6,505	$174.09	$153.35 - $198.00
Q1 2023	156,321	$28,847	$168.70	$144.51 - $184.97
Q4 2022	33,212	$4,914	$137.60	$108.89 - $150.87
Q3 2022	188,717	$26,639	$146.09	$122.68 - $172.74
Q2 2022	124,965	$16,330	$133.79	$112.07 - $154.51
Q1 2022	146,455	$21,315	$192.01	$133.94 - $291.15
Q4 2021	56,924	$16,666	$284.79	$262.52 - $305.21
Q3 2021	18,255	$4,942	$271.15	$241.42 - $288.27
Q2 2021	12,818	$3,108	$228.17	$205.10 - $250.49
Q1 2021	36,669	$8,421	$251.21	$217.65 - $284.86
Q4 2020	7,940	$2,131	$249.38	$218.23 - $273.33
Q2 2020	21,080	$4,806	$219.47	$173.15 - $258.00
Q1 2020	50,399	$8,926	$171.51	$143.90 - $187.85
Q4 2019	2,927	$463	$150.33	$140.16 - $160.06
Q3 2019	15,281	$2,274	$151.90	$139.36 - $160.25
Q2 2019	40,905	$6,087	$137.22	$118.93 - $148.93
Q1 2019	496,077	$68,598	$125.54	$101.87 - $139.48
Q4 2018	504,456	$54,164	$111.51	$98.23 - $126.89
Q3 2018	520,487	$64,821	$110.93	$96.14 - $124.74
Q2 2018	773,023	$75,485	$95.08	$83.16 - $102.32
Q1 2018	990,329	$87,099	$87.17	$80.69 - $96.45
Q4 2017	48,365	$4,101	$86.74	$84.05 - $91.04
Q2 2017	7,843	$715	$91.81	$82.71 - $104.71
Q1 2017	38,732	$3,612	$82.32	$66.79 - $96.68
Q4 2016	3,207	$216	$61.46	$53.78 - $68.88
Q3 2016	10,610	$631	$56.42	$51.10 - $60.52
Q2 2016	38,038	$1,998	$47.10	$41.19 - $53.55
Q1 2016	57,928	$2,424	$37.61	$33.03 - $41.93
Q4 2015	672	$28	$40.86	$37.40 - $43.76
Q3 2015	6,900	$266	$40.86	$35.33 - $46.00
Q2 2015	18,859	$730	$35.83	$32.33 - $39.91
Q1 2015	59,541	$1,964	$28.75	$25.12 - $33.16
Q4 2014	248,580	$6,548	$24.68	$21.03 - $27.15
Q3 2014	272,452	$5,798	$22.83	$19.30 - $24.75
Q2 2014	156,652	$3,698	$24.80	$21.45 - $28.78
Q1 2014	8,076	$220	$28.52	$25.08 - $32.20
Q4 2013	54,539	$1,594	$27.99	$25.42 - $29.66
Q3 2013	85,541	$2,279	$24.65	$21.21 - $27.17
Q2 2013	208,652	$4,423	$21.04	$19.03 - $22.70