MONOLITHIC PWR SYS INC

Ticker: MPWR CUSIP: 609839105 Class: COM

MAI Capital Management's Holding History (CIK: 0001040197)

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

Q4 2025

Shares 371 Value ($000) $337 Avg Close $960.73 Range $831.77 - $1121.48

Q3 2025

Shares 339 Value ($000) $312 Avg Close $808.07 Range $684.50 - $934.81

Q2 2025

Shares 196 Value ($000) $143 Avg Close $633.58 Range $436.42 - $750.80

Q1 2025

Shares 158 Value ($000) $92 Avg Close $624.99 Range $550.94 - $718.03

Q4 2024

Shares 227 Value ($000) $134 Avg Close $716.72 Range $541.09 - $944.19

Q2 2022

Shares 3,109 Value ($000) $1,194 Avg Close $410.37 Range $365.38 - $475.87

Q1 2022

Shares 3,107 Value ($000) $1,509 Avg Close $422.77 Range $340.68 - $499.27

Q4 2021

Shares 3,193 Value ($000) $1,575 Avg Close $500.08 Range $444.81 - $561.94

Q3 2021

Shares 3,839 Value ($000) $1,861 Avg Close $440.15 Range $351.70 - $504.81

Q2 2021

Shares 3,838 Value ($000) $1,433 Avg Close $340.03 Range $291.31 - $382.48

Q1 2021

Shares 4,037 Value ($000) $1,426 Avg Close $351.26 Range $290.78 - $392.28

Q4 2020

Shares 4,159 Value ($000) $1,523 Avg Close $308.64 Range $261.69 - $353.99

Q3 2020

Shares 4,271 Value ($000) $1,194 Avg Close $250.15 Range $223.49 - $273.49

Q2 2020

Shares 5,328 Value ($000) $1,263 Avg Close $194.18 Range $144.85 - $229.19

Q1 2020

Shares 7,653 Value ($000) $1,282 Avg Close $163.85 Range $124.42 - $184.64

Q4 2019

Shares 7,650 Value ($000) $1,362 Avg Close $152.39 Range $125.11 - $175.03

Q3 2019

Shares 7,875 Value ($000) $1,226 Avg Close $142.31 Range $127.77 - $155.32

Q2 2019

Shares 7,875 Value ($000) $1,069 Avg Close $129.05 Range $108.95 - $152.95

Q1 2019

Shares 7,930 Value ($000) $1,074 Avg Close $124.16 Range $101.64 - $137.81

Q4 2018

Shares 8,380 Value ($000) $974 Avg Close $112.91 Range $96.22 - $130.06

Q3 2018

Shares 8,460 Value ($000) $1,062 Avg Close $131.20 Range $117.51 - $143.26

Q2 2018

Shares 8,895 Value ($000) $1,189 Avg Close $119.62 Range $102.58 - $133.88

Q1 2018

Shares 9,195 Value ($000) $1,065 Avg Close $111.03 Range $96.61 - $119.53

Q4 2017

Shares 9,910 Value ($000) $1,113 Avg Close $108.54 Range $98.18 - $118.56

Q3 2017

Shares 9,910 Value ($000) $1,056 Avg Close $94.77 Range $87.95 - $100.67

Q2 2017

Shares 9,910 Value ($000) $955 Avg Close $88.76 Range $82.13 - $96.78

Q1 2017

Shares 10,360 Value ($000) $954 Avg Close $82.35 Range $76.05 - $87.81

Q4 2016

Shares 10,155 Value ($000) $832 Avg Close $74.44 Range $69.57 - $81.67

Q3 2016

Shares 10,155 Value ($000) $817 Avg Close $68.33 Range $60.21 - $75.04

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	371	$337	$960.73	$831.77 - $1121.48
Q3 2025	339	$312	$808.07	$684.50 - $934.81
Q2 2025	196	$143	$633.58	$436.42 - $750.80
Q1 2025	158	$92	$624.99	$550.94 - $718.03
Q4 2024	227	$134	$716.72	$541.09 - $944.19
Q2 2022	3,109	$1,194	$410.37	$365.38 - $475.87
Q1 2022	3,107	$1,509	$422.77	$340.68 - $499.27
Q4 2021	3,193	$1,575	$500.08	$444.81 - $561.94
Q3 2021	3,839	$1,861	$440.15	$351.70 - $504.81
Q2 2021	3,838	$1,433	$340.03	$291.31 - $382.48
Q1 2021	4,037	$1,426	$351.26	$290.78 - $392.28
Q4 2020	4,159	$1,523	$308.64	$261.69 - $353.99
Q3 2020	4,271	$1,194	$250.15	$223.49 - $273.49
Q2 2020	5,328	$1,263	$194.18	$144.85 - $229.19
Q1 2020	7,653	$1,282	$163.85	$124.42 - $184.64
Q4 2019	7,650	$1,362	$152.39	$125.11 - $175.03
Q3 2019	7,875	$1,226	$142.31	$127.77 - $155.32
Q2 2019	7,875	$1,069	$129.05	$108.95 - $152.95
Q1 2019	7,930	$1,074	$124.16	$101.64 - $137.81
Q4 2018	8,380	$974	$112.91	$96.22 - $130.06
Q3 2018	8,460	$1,062	$131.20	$117.51 - $143.26
Q2 2018	8,895	$1,189	$119.62	$102.58 - $133.88
Q1 2018	9,195	$1,065	$111.03	$96.61 - $119.53
Q4 2017	9,910	$1,113	$108.54	$98.18 - $118.56
Q3 2017	9,910	$1,056	$94.77	$87.95 - $100.67
Q2 2017	9,910	$955	$88.76	$82.13 - $96.78
Q1 2017	10,360	$954	$82.35	$76.05 - $87.81
Q4 2016	10,155	$832	$74.44	$69.57 - $81.67
Q3 2016	10,155	$817	$68.33	$60.21 - $75.04