MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

ICON ADVISERS INC/CO's Holding History (CIK: 0001058470)

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

Q4 2025

Shares 18,000 Value ($000) $2,876 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 14,500 Value ($000) $1,795 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 14,500 Value ($000) $1,441 Avg Close $80.86 Range $54.50 - $100.44

Q1 2019

Shares 10,900 Value ($000) $1,014 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 10,900 Value ($000) $704 Avg Close $68.31 Range $53.35 - $77.61

Q3 2018

Shares 10,900 Value ($000) $874 Avg Close $86.11 Range $74.38 - $97.19

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,000	$2,876	$148.21	$120.73 - $170.37
Q3 2025	14,500	$1,795	$106.31	$88.17 - $132.24
Q2 2025	14,500	$1,441	$80.86	$54.50 - $100.44
Q1 2019	10,900	$1,014	$76.40	$59.36 - $88.91
Q4 2018	10,900	$704	$68.31	$53.35 - $77.61
Q3 2018	10,900	$874	$86.11	$74.38 - $97.19