MONOLITHIC PWR SYS INC

Ticker: MPWR CUSIP: 609839105 Class: COM

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q4 2025

Shares 365,384 Value ($000) $331,169 Avg Close $960.73 Range $831.77 - $1121.48

Q3 2025

Shares 357,910 Value ($000) $329,506 Avg Close $808.07 Range $684.50 - $934.81

Q2 2025

Shares 343,961 Value ($000) $251,566 Avg Close $633.58 Range $436.42 - $750.80

Q1 2025

Shares 335,986 Value ($000) $194,865 Avg Close $624.99 Range $550.94 - $718.03

Q4 2024

Shares 325,823 Value ($000) $192,789 Avg Close $716.72 Range $541.09 - $944.19

Q3 2024

Shares 314,264 Value ($000) $290,537 Avg Close $853.35 Range $721.11 - $948.49

Q2 2024

Shares 308,619 Value ($000) $253,586 Avg Close $712.18 Range $577.26 - $845.04

Q1 2024

Shares 294,315 Value ($000) $199,375 Avg Close $657.62 Range $552.66 - $766.48

Q4 2023

Shares 286,256 Value ($000) $180,565 Avg Close $513.84 Range $385.61 - $636.41

Q3 2023

Shares 277,038 Value ($000) $127,992 Avg Close $501.94 Range $430.22 - $584.79

Q2 2023

Shares 260,275 Value ($000) $140,608 Avg Close $465.29 Range $375.28 - $542.22

Q1 2023

Shares 255,188 Value ($000) $127,732 Avg Close $449.31 Range $331.60 - $518.64

Q4 2022

Shares 249,952 Value ($000) $88,386 Avg Close $350.38 Range $294.21 - $405.83

Q3 2022

Shares 241,924 Value ($000) $87,916 Avg Close $432.95 Range $338.72 - $526.93

Q2 2022

Shares 233,687 Value ($000) $89,746 Avg Close $410.37 Range $365.38 - $475.87

Q1 2022

Shares 226,421 Value ($000) $109,968 Avg Close $422.77 Range $340.68 - $499.27

Q4 2021

Shares 223,667 Value ($000) $110,342 Avg Close $500.08 Range $444.81 - $561.94

Q3 2021

Shares 218,194 Value ($000) $105,754 Avg Close $440.15 Range $351.70 - $504.81

Q2 2021

Shares 306,773 Value ($000) $114,565 Avg Close $340.03 Range $291.31 - $382.48

Q1 2021

Shares 300,372 Value ($000) $106,095 Avg Close $351.26 Range $290.78 - $392.28

Q4 2020

Shares 238,970 Value ($000) $87,518 Avg Close $308.64 Range $261.69 - $353.99

Q3 2020

Shares 237,494 Value ($000) $66,406 Avg Close $250.15 Range $223.49 - $273.49

Q2 2020

Shares 232,208 Value ($000) $55,034 Avg Close $194.18 Range $144.85 - $229.19

Q1 2020

Shares 231,106 Value ($000) $38,702 Avg Close $163.85 Range $124.42 - $184.64

Q4 2019

Shares 208,552 Value ($000) $37,127 Avg Close $152.39 Range $125.11 - $175.03

Q3 2019

Shares 205,391 Value ($000) $31,966 Avg Close $142.31 Range $127.77 - $155.32

Q2 2019

Shares 262,199 Value ($000) $35,602 Avg Close $129.05 Range $108.95 - $152.95

Q1 2019

Shares 256,264 Value ($000) $34,722 Avg Close $124.16 Range $101.64 - $137.81

Q4 2018

Shares 232,428 Value ($000) $27,020 Avg Close $112.91 Range $96.22 - $130.06

Q3 2018

Shares 228,177 Value ($000) $28,644 Avg Close $131.20 Range $117.51 - $143.26

Q2 2018

Shares 208,119 Value ($000) $27,820 Avg Close $119.62 Range $102.58 - $133.88

Q1 2018

Shares 261,656 Value ($000) $30,292 Avg Close $111.03 Range $96.61 - $119.53

Q4 2017

Shares 246,147 Value ($000) $27,658 Avg Close $108.54 Range $98.18 - $118.56

Q3 2017

Shares 231,236 Value ($000) $24,639 Avg Close $94.77 Range $87.95 - $100.67

Q2 2017

Shares 172,874 Value ($000) $16,666 Avg Close $88.76 Range $82.13 - $96.78

Q1 2017

Shares 156,150 Value ($000) $14,382 Avg Close $82.35 Range $76.05 - $87.81

Q4 2016

Shares 146,166 Value ($000) $11,976 Avg Close $74.44 Range $69.57 - $81.67

Q3 2016

Shares 134,205 Value ($000) $10,804 Avg Close $68.33 Range $60.21 - $75.04

Q2 2016

Shares 128,047 Value ($000) $8,749 Avg Close $60.38 Range $55.33 - $65.50

Q1 2016

Shares 125,887 Value ($000) $8,012 Avg Close $54.76 Range $50.58 - $59.11

Q4 2015

Shares 120,473 Value ($000) $7,676 Avg Close $56.88 Range $45.12 - $63.43

Q3 2015

Shares 117,524 Value ($000) $6,018 Avg Close $45.23 Range $37.18 - $48.10

Q2 2015

Shares 110,379 Value ($000) $5,598 Avg Close $48.11 Range $44.76 - $50.50

Q1 2015

Shares 107,192 Value ($000) $5,644 Avg Close $45.64 Range $40.76 - $50.87

Q4 2014

Shares 97,664 Value ($000) $4,858 Avg Close $40.54 Range $30.68 - $45.83

Q3 2014

Shares 98,695 Value ($000) $4,348 Avg Close $39.57 Range $36.40 - $43.40

Q2 2014

Shares 98,817 Value ($000) $4,185 Avg Close $34.76 Range $31.35 - $38.50

Q1 2014

Shares 96,491 Value ($000) $3,741 Avg Close $31.60 Range $27.60 - $35.10

Q4 2013

Shares 90,974 Value ($000) $3,154 Avg Close $28.65 Range $24.43 - $31.16

Q3 2013

Shares 87,737 Value ($000) $2,705 Avg Close $25.18 Range $21.26 - $28.18

Q2 2013

Shares 83,757 Value ($000) $2,005 Avg Close $21.28 Range $18.50 - $22.86

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	365,384	$331,169	$960.73	$831.77 - $1121.48
Q3 2025	357,910	$329,506	$808.07	$684.50 - $934.81
Q2 2025	343,961	$251,566	$633.58	$436.42 - $750.80
Q1 2025	335,986	$194,865	$624.99	$550.94 - $718.03
Q4 2024	325,823	$192,789	$716.72	$541.09 - $944.19
Q3 2024	314,264	$290,537	$853.35	$721.11 - $948.49
Q2 2024	308,619	$253,586	$712.18	$577.26 - $845.04
Q1 2024	294,315	$199,375	$657.62	$552.66 - $766.48
Q4 2023	286,256	$180,565	$513.84	$385.61 - $636.41
Q3 2023	277,038	$127,992	$501.94	$430.22 - $584.79
Q2 2023	260,275	$140,608	$465.29	$375.28 - $542.22
Q1 2023	255,188	$127,732	$449.31	$331.60 - $518.64
Q4 2022	249,952	$88,386	$350.38	$294.21 - $405.83
Q3 2022	241,924	$87,916	$432.95	$338.72 - $526.93
Q2 2022	233,687	$89,746	$410.37	$365.38 - $475.87
Q1 2022	226,421	$109,968	$422.77	$340.68 - $499.27
Q4 2021	223,667	$110,342	$500.08	$444.81 - $561.94
Q3 2021	218,194	$105,754	$440.15	$351.70 - $504.81
Q2 2021	306,773	$114,565	$340.03	$291.31 - $382.48
Q1 2021	300,372	$106,095	$351.26	$290.78 - $392.28
Q4 2020	238,970	$87,518	$308.64	$261.69 - $353.99
Q3 2020	237,494	$66,406	$250.15	$223.49 - $273.49
Q2 2020	232,208	$55,034	$194.18	$144.85 - $229.19
Q1 2020	231,106	$38,702	$163.85	$124.42 - $184.64
Q4 2019	208,552	$37,127	$152.39	$125.11 - $175.03
Q3 2019	205,391	$31,966	$142.31	$127.77 - $155.32
Q2 2019	262,199	$35,602	$129.05	$108.95 - $152.95
Q1 2019	256,264	$34,722	$124.16	$101.64 - $137.81
Q4 2018	232,428	$27,020	$112.91	$96.22 - $130.06
Q3 2018	228,177	$28,644	$131.20	$117.51 - $143.26
Q2 2018	208,119	$27,820	$119.62	$102.58 - $133.88
Q1 2018	261,656	$30,292	$111.03	$96.61 - $119.53
Q4 2017	246,147	$27,658	$108.54	$98.18 - $118.56
Q3 2017	231,236	$24,639	$94.77	$87.95 - $100.67
Q2 2017	172,874	$16,666	$88.76	$82.13 - $96.78
Q1 2017	156,150	$14,382	$82.35	$76.05 - $87.81
Q4 2016	146,166	$11,976	$74.44	$69.57 - $81.67
Q3 2016	134,205	$10,804	$68.33	$60.21 - $75.04
Q2 2016	128,047	$8,749	$60.38	$55.33 - $65.50
Q1 2016	125,887	$8,012	$54.76	$50.58 - $59.11
Q4 2015	120,473	$7,676	$56.88	$45.12 - $63.43
Q3 2015	117,524	$6,018	$45.23	$37.18 - $48.10
Q2 2015	110,379	$5,598	$48.11	$44.76 - $50.50
Q1 2015	107,192	$5,644	$45.64	$40.76 - $50.87
Q4 2014	97,664	$4,858	$40.54	$30.68 - $45.83
Q3 2014	98,695	$4,348	$39.57	$36.40 - $43.40
Q2 2014	98,817	$4,185	$34.76	$31.35 - $38.50
Q1 2014	96,491	$3,741	$31.60	$27.60 - $35.10
Q4 2013	90,974	$3,154	$28.65	$24.43 - $31.16
Q3 2013	87,737	$2,705	$25.18	$21.26 - $28.18
Q2 2013	83,757	$2,005	$21.28	$18.50 - $22.86