MONOLITHIC PWR SYS INC

Ticker: MPWR CUSIP: 609839105 Class: COM

Clearbridge Investments, LLC's Holding History (CIK: 0001348883)

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

Q4 2025

Shares 9,211 Value ($000) $8,348 Avg Close $960.73 Range $831.77 - $1121.48

Q3 2025

Shares 9,211 Value ($000) $8,480 Avg Close $808.07 Range $684.50 - $934.81

Q2 2025

Shares 8,952 Value ($000) $6,547 Avg Close $633.58 Range $436.42 - $750.80

Q1 2025

Shares 39,120 Value ($000) $22,689 Avg Close $624.99 Range $550.94 - $718.03

Q4 2024

Shares 52,746 Value ($000) $31,210 Avg Close $716.72 Range $541.09 - $944.19

Q3 2024

Shares 53,580 Value ($000) $49,535 Avg Close $853.35 Range $721.11 - $948.49

Q2 2024

Shares 208,362 Value ($000) $171,207 Avg Close $712.18 Range $577.26 - $845.04

Q1 2024

Shares 325,750 Value ($000) $220,670 Avg Close $657.62 Range $552.66 - $766.48

Q4 2023

Shares 390,036 Value ($000) $246,027 Avg Close $513.84 Range $385.61 - $636.41

Q3 2023

Shares 406,338 Value ($000) $187,728 Avg Close $501.94 Range $430.22 - $584.79

Q2 2023

Shares 407,844 Value ($000) $220,330 Avg Close $465.29 Range $375.28 - $542.22

Q1 2023

Shares 424,396 Value ($000) $212,427 Avg Close $449.31 Range $331.60 - $518.64

Q4 2022

Shares 447,840 Value ($000) $158,361 Avg Close $350.38 Range $294.21 - $405.83

Q3 2022

Shares 468,672 Value ($000) $170,315 Avg Close $432.95 Range $338.72 - $526.93

Q2 2022

Shares 468,235 Value ($000) $179,821 Avg Close $410.37 Range $365.38 - $475.87

Q1 2022

Shares 467,938 Value ($000) $227,268 Avg Close $422.77 Range $340.68 - $499.27

Q4 2021

Shares 468,074 Value ($000) $230,915 Avg Close $500.08 Range $444.81 - $561.94

Q3 2021

Shares 539,705 Value ($000) $261,584 Avg Close $440.15 Range $351.70 - $504.81

Q2 2021

Shares 544,899 Value ($000) $203,493 Avg Close $340.03 Range $291.31 - $382.48

Q1 2021

Shares 706,352 Value ($000) $249,491 Avg Close $351.26 Range $290.78 - $392.28

Q4 2020

Shares 734,463 Value ($000) $268,982 Avg Close $308.64 Range $261.69 - $353.99

Q3 2020

Shares 818,338 Value ($000) $228,815 Avg Close $250.15 Range $223.49 - $273.49

Q2 2020

Shares 821,144 Value ($000) $194,611 Avg Close $194.18 Range $144.85 - $229.19

Q1 2020

Shares 921,247 Value ($000) $154,272 Avg Close $163.85 Range $124.42 - $184.64

Q4 2019

Shares 867,901 Value ($000) $156,231 Avg Close $152.39 Range $125.11 - $175.03

Q3 2019

Shares 867,295 Value ($000) $134,977 Avg Close $142.31 Range $127.77 - $155.32

Q2 2019

Shares 866,714 Value ($000) $117,682 Avg Close $129.05 Range $108.95 - $152.95

Q1 2019

Shares 874,866 Value ($000) $118,536 Avg Close $124.16 Range $101.64 - $137.81

Q4 2018

Shares 786,110 Value ($000) $91,385 Avg Close $112.91 Range $96.22 - $130.06

Q3 2018

Shares 568,054 Value ($000) $71,308 Avg Close $131.20 Range $117.51 - $143.26

Q2 2018

Shares 560,553 Value ($000) $74,929 Avg Close $119.62 Range $102.58 - $133.88

Q1 2018

Shares 590,143 Value ($000) $68,321 Avg Close $111.03 Range $96.61 - $119.53

Q4 2017

Shares 590,170 Value ($000) $66,312 Avg Close $108.54 Range $98.18 - $118.56

Q3 2017

Shares 589,654 Value ($000) $62,828 Avg Close $94.77 Range $87.95 - $100.67

Q2 2017

Shares 695,667 Value ($000) $67,062 Avg Close $88.76 Range $82.13 - $96.78

Q1 2017

Shares 819,191 Value ($000) $75,447 Avg Close $82.35 Range $76.05 - $87.81

Q4 2016

Shares 808,157 Value ($000) $66,212 Avg Close $74.44 Range $69.57 - $81.67

Q3 2016

Shares 808,721 Value ($000) $65,102 Avg Close $68.33 Range $60.21 - $75.04

Q2 2016

Shares 810,007 Value ($000) $55,340 Avg Close $60.38 Range $55.33 - $65.50

Q1 2016

Shares 806,156 Value ($000) $51,304 Avg Close $54.76 Range $50.58 - $59.11

Q4 2015

Shares 817,651 Value ($000) $52,093 Avg Close $56.88 Range $45.12 - $63.43

Q3 2015

Shares 826,758 Value ($000) $42,330 Avg Close $45.23 Range $37.18 - $48.10

Q2 2015

Shares 857,292 Value ($000) $43,473 Avg Close $48.11 Range $44.76 - $50.50

Q1 2015

Shares 861,027 Value ($000) $45,333 Avg Close $45.64 Range $40.76 - $50.87

Q4 2014

Shares 859,597 Value ($000) $42,756 Avg Close $40.54 Range $30.68 - $45.83

Q3 2014

Shares 862,635 Value ($000) $37,999 Avg Close $39.57 Range $36.40 - $43.40

Q2 2014

Shares 856,943 Value ($000) $36,292 Avg Close $34.76 Range $31.35 - $38.50

Q1 2014

Shares 853,368 Value ($000) $33,085 Avg Close $31.60 Range $27.60 - $35.10

Q4 2013

Shares 691,583 Value ($000) $23,970 Avg Close $28.65 Range $24.43 - $31.16

Q3 2013

Shares 611,625 Value ($000) $18,520 Avg Close $25.18 Range $21.26 - $28.18

Q2 2013

Shares 444,079 Value ($000) $10,707 Avg Close $21.28 Range $18.50 - $22.86

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	9,211	$8,348	$960.73	$831.77 - $1121.48
Q3 2025	9,211	$8,480	$808.07	$684.50 - $934.81
Q2 2025	8,952	$6,547	$633.58	$436.42 - $750.80
Q1 2025	39,120	$22,689	$624.99	$550.94 - $718.03
Q4 2024	52,746	$31,210	$716.72	$541.09 - $944.19
Q3 2024	53,580	$49,535	$853.35	$721.11 - $948.49
Q2 2024	208,362	$171,207	$712.18	$577.26 - $845.04
Q1 2024	325,750	$220,670	$657.62	$552.66 - $766.48
Q4 2023	390,036	$246,027	$513.84	$385.61 - $636.41
Q3 2023	406,338	$187,728	$501.94	$430.22 - $584.79
Q2 2023	407,844	$220,330	$465.29	$375.28 - $542.22
Q1 2023	424,396	$212,427	$449.31	$331.60 - $518.64
Q4 2022	447,840	$158,361	$350.38	$294.21 - $405.83
Q3 2022	468,672	$170,315	$432.95	$338.72 - $526.93
Q2 2022	468,235	$179,821	$410.37	$365.38 - $475.87
Q1 2022	467,938	$227,268	$422.77	$340.68 - $499.27
Q4 2021	468,074	$230,915	$500.08	$444.81 - $561.94
Q3 2021	539,705	$261,584	$440.15	$351.70 - $504.81
Q2 2021	544,899	$203,493	$340.03	$291.31 - $382.48
Q1 2021	706,352	$249,491	$351.26	$290.78 - $392.28
Q4 2020	734,463	$268,982	$308.64	$261.69 - $353.99
Q3 2020	818,338	$228,815	$250.15	$223.49 - $273.49
Q2 2020	821,144	$194,611	$194.18	$144.85 - $229.19
Q1 2020	921,247	$154,272	$163.85	$124.42 - $184.64
Q4 2019	867,901	$156,231	$152.39	$125.11 - $175.03
Q3 2019	867,295	$134,977	$142.31	$127.77 - $155.32
Q2 2019	866,714	$117,682	$129.05	$108.95 - $152.95
Q1 2019	874,866	$118,536	$124.16	$101.64 - $137.81
Q4 2018	786,110	$91,385	$112.91	$96.22 - $130.06
Q3 2018	568,054	$71,308	$131.20	$117.51 - $143.26
Q2 2018	560,553	$74,929	$119.62	$102.58 - $133.88
Q1 2018	590,143	$68,321	$111.03	$96.61 - $119.53
Q4 2017	590,170	$66,312	$108.54	$98.18 - $118.56
Q3 2017	589,654	$62,828	$94.77	$87.95 - $100.67
Q2 2017	695,667	$67,062	$88.76	$82.13 - $96.78
Q1 2017	819,191	$75,447	$82.35	$76.05 - $87.81
Q4 2016	808,157	$66,212	$74.44	$69.57 - $81.67
Q3 2016	808,721	$65,102	$68.33	$60.21 - $75.04
Q2 2016	810,007	$55,340	$60.38	$55.33 - $65.50
Q1 2016	806,156	$51,304	$54.76	$50.58 - $59.11
Q4 2015	817,651	$52,093	$56.88	$45.12 - $63.43
Q3 2015	826,758	$42,330	$45.23	$37.18 - $48.10
Q2 2015	857,292	$43,473	$48.11	$44.76 - $50.50
Q1 2015	861,027	$45,333	$45.64	$40.76 - $50.87
Q4 2014	859,597	$42,756	$40.54	$30.68 - $45.83
Q3 2014	862,635	$37,999	$39.57	$36.40 - $43.40
Q2 2014	856,943	$36,292	$34.76	$31.35 - $38.50
Q1 2014	853,368	$33,085	$31.60	$27.60 - $35.10
Q4 2013	691,583	$23,970	$28.65	$24.43 - $31.16
Q3 2013	611,625	$18,520	$25.18	$21.26 - $28.18
Q2 2013	444,079	$10,707	$21.28	$18.50 - $22.86