MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

JANUS HENDERSON GROUP PLC's Holding History (CIK: 0001274173)

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

Q4 2025

Shares 29,070 Value ($000) $4,647 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 29,070 Value ($000) $3,597 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 90,936 Value ($000) $9,035 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 29,070 Value ($000) $2,372 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 31,070 Value ($000) $3,244 Avg Close $106.91 Range $96.54 - $118.37

Q3 2024

Shares 31,070 Value ($000) $3,377 Avg Close $117.45 Range $99.10 - $145.63

Q2 2024

Shares 31,070 Value ($000) $4,055 Avg Close $124.55 Range $105.72 - $137.52

Q1 2024

Shares 31,392 Value ($000) $4,175 Avg Close $114.51 Range $94.23 - $132.85

Q4 2023

Shares 61,396 Value ($000) $6,318 Avg Close $79.84 Range $62.28 - $104.49

Q3 2023

Shares 26,927 Value ($000) $2,330 Avg Close $95.58 Range $81.25 - $107.67

Q2 2023

Shares 26,912 Value ($000) $2,909 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 26,997 Value ($000) $2,392 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 39,214 Value ($000) $3,323 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 34,553 Value ($000) $2,854 Avg Close $100.01 Range $79.23 - $120.27

Q2 2022

Shares 52,059 Value ($000) $5,343 Avg Close $112.92 Range $94.75 - $148.07

Q1 2022

Shares 333,120 Value ($000) $49,969 Avg Close $150.35 Range $131.30 - $175.09

Q4 2021

Shares 311,267 Value ($000) $54,214 Avg Close $151.09 Range $136.06 - $172.80

Q3 2021

Shares 18,254 Value ($000) $2,755 Avg Close $148.13 Range $133.76 - $168.78

Q2 2021

Shares 19,172 Value ($000) $3,412 Avg Close $175.09 Range $158.98 - $192.11

Q1 2021

Shares 16,733 Value ($000) $3,103 Avg Close $161.78 Range $138.78 - $185.00

Q2 2020

Shares 276,105 Value ($000) $31,266 Avg Close $95.31 Range $70.45 - $112.06

Q1 2020

Shares 577,062 Value ($000) $47,002 Avg Close $97.84 Range $64.00 - $116.86

Q4 2019

Shares 528,891 Value ($000) $58,183 Avg Close $99.99 Range $81.07 - $109.78

Q3 2019

Shares 745,626 Value ($000) $68,806 Avg Close $78.64 Range $68.69 - $91.29

Q2 2019

Shares 171,659 Value ($000) $13,371 Avg Close $80.27 Range $67.03 - $98.53

Q1 2019

Shares 37,004 Value ($000) $3,443 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 39,486 Value ($000) $2,551 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 34,375 Value ($000) $2,755 Avg Close $86.11 Range $74.38 - $97.19

Q2 2018

Shares 3,440 Value ($000) $329 Avg Close $102.60 Range $86.55 - $115.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	29,070	$4,647	$148.21	$120.73 - $170.37
Q3 2025	29,070	$3,597	$106.31	$88.17 - $132.24
Q2 2025	90,936	$9,035	$80.86	$54.50 - $100.44
Q1 2025	29,070	$2,372	$100.21	$75.89 - $124.28
Q4 2024	31,070	$3,244	$106.91	$96.54 - $118.37
Q3 2024	31,070	$3,377	$117.45	$99.10 - $145.63
Q2 2024	31,070	$4,055	$124.55	$105.72 - $137.52
Q1 2024	31,392	$4,175	$114.51	$94.23 - $132.85
Q4 2023	61,396	$6,318	$79.84	$62.28 - $104.49
Q3 2023	26,927	$2,330	$95.58	$81.25 - $107.67
Q2 2023	26,912	$2,909	$89.53	$77.81 - $108.20
Q1 2023	26,997	$2,392	$93.12	$80.00 - $111.27
Q4 2022	39,214	$3,323	$78.00	$62.97 - $89.22
Q3 2022	34,553	$2,854	$100.01	$79.23 - $120.27
Q2 2022	52,059	$5,343	$112.92	$94.75 - $148.07
Q1 2022	333,120	$49,969	$150.35	$131.30 - $175.09
Q4 2021	311,267	$54,214	$151.09	$136.06 - $172.80
Q3 2021	18,254	$2,755	$148.13	$133.76 - $168.78
Q2 2021	19,172	$3,412	$175.09	$158.98 - $192.11
Q1 2021	16,733	$3,103	$161.78	$138.78 - $185.00
Q2 2020	276,105	$31,266	$95.31	$70.45 - $112.06
Q1 2020	577,062	$47,002	$97.84	$64.00 - $116.86
Q4 2019	528,891	$58,183	$99.99	$81.07 - $109.78
Q3 2019	745,626	$68,806	$78.64	$68.69 - $91.29
Q2 2019	171,659	$13,371	$80.27	$67.03 - $98.53
Q1 2019	37,004	$3,443	$76.40	$59.36 - $88.91
Q4 2018	39,486	$2,551	$68.31	$53.35 - $77.61
Q3 2018	34,375	$2,755	$86.11	$74.38 - $97.19
Q2 2018	3,440	$329	$102.60	$86.55 - $115.42