MONOLITHIC PWR SYS INC

Ticker: MPWR CUSIP: 609839105 Class: COM

PARNASSUS INVESTMENTS, LLC's Holding History (CIK: 0000948669)

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

Q4 2025

Shares 26,590 Value ($000) $24,100 Avg Close $960.73 Range $831.77 - $1121.48

Q3 2025

Shares 27,411 Value ($000) $25,236 Avg Close $808.07 Range $684.50 - $934.81

Q2 2025

Shares 27,712 Value ($000) $20,268 Avg Close $633.58 Range $436.42 - $750.80

Q1 2025

Shares 28,450 Value ($000) $16,500 Avg Close $624.99 Range $550.94 - $718.03

Q4 2024

Shares 28,450 Value ($000) $16,834 Avg Close $716.72 Range $541.09 - $944.19

Q3 2024

Shares 22,806 Value ($000) $21,084 Avg Close $853.35 Range $721.11 - $948.49

Q2 2024

Shares 30,663 Value ($000) $25,195 Avg Close $712.18 Range $577.26 - $845.04

Q1 2024

Shares 30,663 Value ($000) $20,772 Avg Close $657.62 Range $552.66 - $766.48

Q4 2023

Shares 30,663 Value ($000) $19,342 Avg Close $513.84 Range $385.61 - $636.41

Q3 2023

Shares 28,318 Value ($000) $13,083 Avg Close $501.94 Range $430.22 - $584.79

Q2 2023

Shares 28,318 Value ($000) $15,298 Avg Close $465.29 Range $375.28 - $542.22

Q1 2023

Shares 28,318 Value ($000) $14,174 Avg Close $449.31 Range $331.60 - $518.64

Q4 2022

Shares 39,450 Value ($000) $13,950 Avg Close $350.38 Range $294.21 - $405.83

Q3 2022

Shares 16,156 Value ($000) $5,871 Avg Close $432.95 Range $338.72 - $526.93

Q2 2022

Shares 50,262 Value ($000) $19,303 Avg Close $410.37 Range $365.38 - $475.87

Q1 2022

Shares 50,262 Value ($000) $24,411 Avg Close $422.77 Range $340.68 - $499.27

Q4 2021

Shares 50,262 Value ($000) $24,796 Avg Close $500.08 Range $444.81 - $561.94

Q3 2021

Shares 50,262 Value ($000) $24,361 Avg Close $440.15 Range $351.70 - $504.81

Q2 2021

Shares 50,262 Value ($000) $18,770 Avg Close $340.03 Range $291.31 - $382.48

Q1 2021

Shares 50,262 Value ($000) $17,753 Avg Close $351.26 Range $290.78 - $392.28

Q4 2020

Shares 50,262 Value ($000) $18,407 Avg Close $308.64 Range $261.69 - $353.99

Q3 2020

Shares 50,262 Value ($000) $14,054 Avg Close $250.15 Range $223.49 - $273.49

Q2 2020

Shares 51,414 Value ($000) $12,185 Avg Close $194.18 Range $144.85 - $229.19

Q3 2019

Shares 112,827 Value ($000) $17,559 Avg Close $142.31 Range $127.77 - $155.32

Q2 2019

Shares 112,827 Value ($000) $15,320 Avg Close $129.05 Range $108.95 - $152.95

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	26,590	$24,100	$960.73	$831.77 - $1121.48
Q3 2025	27,411	$25,236	$808.07	$684.50 - $934.81
Q2 2025	27,712	$20,268	$633.58	$436.42 - $750.80
Q1 2025	28,450	$16,500	$624.99	$550.94 - $718.03
Q4 2024	28,450	$16,834	$716.72	$541.09 - $944.19
Q3 2024	22,806	$21,084	$853.35	$721.11 - $948.49
Q2 2024	30,663	$25,195	$712.18	$577.26 - $845.04
Q1 2024	30,663	$20,772	$657.62	$552.66 - $766.48
Q4 2023	30,663	$19,342	$513.84	$385.61 - $636.41
Q3 2023	28,318	$13,083	$501.94	$430.22 - $584.79
Q2 2023	28,318	$15,298	$465.29	$375.28 - $542.22
Q1 2023	28,318	$14,174	$449.31	$331.60 - $518.64
Q4 2022	39,450	$13,950	$350.38	$294.21 - $405.83
Q3 2022	16,156	$5,871	$432.95	$338.72 - $526.93
Q2 2022	50,262	$19,303	$410.37	$365.38 - $475.87
Q1 2022	50,262	$24,411	$422.77	$340.68 - $499.27
Q4 2021	50,262	$24,796	$500.08	$444.81 - $561.94
Q3 2021	50,262	$24,361	$440.15	$351.70 - $504.81
Q2 2021	50,262	$18,770	$340.03	$291.31 - $382.48
Q1 2021	50,262	$17,753	$351.26	$290.78 - $392.28
Q4 2020	50,262	$18,407	$308.64	$261.69 - $353.99
Q3 2020	50,262	$14,054	$250.15	$223.49 - $273.49
Q2 2020	51,414	$12,185	$194.18	$144.85 - $229.19
Q3 2019	112,827	$17,559	$142.31	$127.77 - $155.32
Q2 2019	112,827	$15,320	$129.05	$108.95 - $152.95