MONOLITHIC PWR SYS INC

Ticker: MPWR CUSIP: 609839105 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2025

Shares 384,770 Value ($000) $348,740 Avg Close $960.73 Range $831.77 - $1121.48

Q3 2025

Shares 452,938 Value ($000) $416,993 Avg Close $808.07 Range $684.50 - $934.81

Q2 2025

Shares 703,151 Value ($000) $514,271 Avg Close $633.58 Range $436.42 - $750.80

Q1 2025

Shares 761,906 Value ($000) $441,890 Avg Close $624.99 Range $550.94 - $718.03

Q4 2024

Shares 853,029 Value ($000) $504,737 Avg Close $716.72 Range $541.09 - $944.19

Q3 2024

Shares 1,104,225 Value ($000) $1,020,856 Avg Close $853.35 Range $721.11 - $948.49

Q2 2024

Shares 1,103,974 Value ($000) $907,113 Avg Close $712.18 Range $577.26 - $845.04

Q1 2024

Shares 953,637 Value ($000) $646,013 Avg Close $657.62 Range $552.66 - $766.48

Q4 2023

Shares 938,919 Value ($000) $592,251 Avg Close $513.84 Range $385.61 - $636.41

Q3 2023

Shares 853,243 Value ($000) $394,198 Avg Close $501.94 Range $430.22 - $584.79

Q2 2023

Shares 846,039 Value ($000) $457,056 Avg Close $465.29 Range $375.28 - $542.22

Q1 2023

Shares 340,029 Value ($000) $170,198 Avg Close $449.31 Range $331.60 - $518.64

Q4 2022

Shares 286,128 Value ($000) $101,178 Avg Close $350.38 Range $294.21 - $405.83

Q3 2022

Shares 199,145 Value ($000) $72,369 Avg Close $432.95 Range $338.72 - $526.93

Q2 2022

Shares 198,845 Value ($000) $76,364 Avg Close $410.37 Range $365.38 - $475.87

Q1 2022

Shares 199,465 Value ($000) $96,876 Avg Close $422.77 Range $340.68 - $499.27

Q4 2021

Shares 192,907 Value ($000) $95,167 Avg Close $500.08 Range $444.81 - $561.94

Q3 2021

Shares 198,059 Value ($000) $95,995 Avg Close $440.15 Range $351.70 - $504.81

Q2 2021

Shares 199,371 Value ($000) $74,455 Avg Close $340.03 Range $291.31 - $382.48

Q1 2021

Shares 297,747 Value ($000) $105,168 Avg Close $351.26 Range $290.78 - $392.28

Q4 2020

Shares 288,154 Value ($000) $105,531 Avg Close $308.64 Range $261.69 - $353.99

Q3 2020

Shares 1,417,408 Value ($000) $396,321 Avg Close $250.15 Range $223.49 - $273.49

Q2 2020

Shares 2,004,875 Value ($000) $475,155 Avg Close $194.18 Range $144.85 - $229.19

Q1 2020

Shares 2,070,255 Value ($000) $346,685 Avg Close $163.85 Range $124.42 - $184.64

Q4 2019

Shares 1,796,986 Value ($000) $319,900 Avg Close $152.39 Range $125.11 - $175.03

Q3 2019

Shares 1,761,400 Value ($000) $274,127 Avg Close $142.31 Range $127.77 - $155.32

Q2 2019

Shares 1,582,613 Value ($000) $214,887 Avg Close $129.05 Range $108.95 - $152.95

Q1 2019

Shares 1,507,200 Value ($000) $204,211 Avg Close $124.16 Range $101.64 - $137.81

Q4 2018

Shares 1,643,332 Value ($000) $191,037 Avg Close $112.91 Range $96.22 - $130.06

Q3 2018

Shares 1,007,102 Value ($000) $126,421 Avg Close $131.20 Range $117.51 - $143.26

Q2 2018

Shares 358,804 Value ($000) $47,962 Avg Close $119.62 Range $102.58 - $133.88

Q1 2018

Shares 168,980 Value ($000) $19,563 Avg Close $111.03 Range $96.61 - $119.53

Q4 2017

Shares 161,424 Value ($000) $18,138 Avg Close $108.54 Range $98.18 - $118.56

Q2 2017

Shares 161,322 Value ($000) $15,552 Avg Close $88.76 Range $82.13 - $96.78

Q1 2017

Shares 309,930 Value ($000) $28,545 Avg Close $82.35 Range $76.05 - $87.81

Q4 2016

Shares 407,431 Value ($000) $33,381 Avg Close $74.44 Range $69.57 - $81.67

Q3 2016

Shares 481,997 Value ($000) $38,800 Avg Close $68.33 Range $60.21 - $75.04

Q2 2016

Shares 419,482 Value ($000) $28,659 Avg Close $60.38 Range $55.33 - $65.50

Q1 2016

Shares 360,164 Value ($000) $22,922 Avg Close $54.76 Range $50.58 - $59.11

Q4 2015

Shares 372,098 Value ($000) $23,706 Avg Close $56.88 Range $45.12 - $63.43

Q3 2015

Shares 274,427 Value ($000) $14,051 Avg Close $45.23 Range $37.18 - $48.10

Q2 2015

Shares 486,153 Value ($000) $24,653 Avg Close $48.11 Range $44.76 - $50.50

Q1 2015

Shares 406,974 Value ($000) $21,427 Avg Close $45.64 Range $40.76 - $50.87

Q4 2014

Shares 245,822 Value ($000) $12,227 Avg Close $40.54 Range $30.68 - $45.83

Q3 2014

Shares 311,652 Value ($000) $13,728 Avg Close $39.57 Range $36.40 - $43.40

Q2 2014

Shares 432,802 Value ($000) $18,330 Avg Close $34.76 Range $31.35 - $38.50

Q1 2014

Shares 375,837 Value ($000) $14,572 Avg Close $31.60 Range $27.60 - $35.10

Q4 2013

Shares 460,509 Value ($000) $15,962 Avg Close $28.65 Range $24.43 - $31.16

Q3 2013

Shares 425,889 Value ($000) $12,896 Avg Close $25.18 Range $21.26 - $28.18

Q2 2013

Shares 611,299 Value ($000) $14,739 Avg Close $21.28 Range $18.50 - $22.86

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	384,770	$348,740	$960.73	$831.77 - $1121.48
Q3 2025	452,938	$416,993	$808.07	$684.50 - $934.81
Q2 2025	703,151	$514,271	$633.58	$436.42 - $750.80
Q1 2025	761,906	$441,890	$624.99	$550.94 - $718.03
Q4 2024	853,029	$504,737	$716.72	$541.09 - $944.19
Q3 2024	1,104,225	$1,020,856	$853.35	$721.11 - $948.49
Q2 2024	1,103,974	$907,113	$712.18	$577.26 - $845.04
Q1 2024	953,637	$646,013	$657.62	$552.66 - $766.48
Q4 2023	938,919	$592,251	$513.84	$385.61 - $636.41
Q3 2023	853,243	$394,198	$501.94	$430.22 - $584.79
Q2 2023	846,039	$457,056	$465.29	$375.28 - $542.22
Q1 2023	340,029	$170,198	$449.31	$331.60 - $518.64
Q4 2022	286,128	$101,178	$350.38	$294.21 - $405.83
Q3 2022	199,145	$72,369	$432.95	$338.72 - $526.93
Q2 2022	198,845	$76,364	$410.37	$365.38 - $475.87
Q1 2022	199,465	$96,876	$422.77	$340.68 - $499.27
Q4 2021	192,907	$95,167	$500.08	$444.81 - $561.94
Q3 2021	198,059	$95,995	$440.15	$351.70 - $504.81
Q2 2021	199,371	$74,455	$340.03	$291.31 - $382.48
Q1 2021	297,747	$105,168	$351.26	$290.78 - $392.28
Q4 2020	288,154	$105,531	$308.64	$261.69 - $353.99
Q3 2020	1,417,408	$396,321	$250.15	$223.49 - $273.49
Q2 2020	2,004,875	$475,155	$194.18	$144.85 - $229.19
Q1 2020	2,070,255	$346,685	$163.85	$124.42 - $184.64
Q4 2019	1,796,986	$319,900	$152.39	$125.11 - $175.03
Q3 2019	1,761,400	$274,127	$142.31	$127.77 - $155.32
Q2 2019	1,582,613	$214,887	$129.05	$108.95 - $152.95
Q1 2019	1,507,200	$204,211	$124.16	$101.64 - $137.81
Q4 2018	1,643,332	$191,037	$112.91	$96.22 - $130.06
Q3 2018	1,007,102	$126,421	$131.20	$117.51 - $143.26
Q2 2018	358,804	$47,962	$119.62	$102.58 - $133.88
Q1 2018	168,980	$19,563	$111.03	$96.61 - $119.53
Q4 2017	161,424	$18,138	$108.54	$98.18 - $118.56
Q2 2017	161,322	$15,552	$88.76	$82.13 - $96.78
Q1 2017	309,930	$28,545	$82.35	$76.05 - $87.81
Q4 2016	407,431	$33,381	$74.44	$69.57 - $81.67
Q3 2016	481,997	$38,800	$68.33	$60.21 - $75.04
Q2 2016	419,482	$28,659	$60.38	$55.33 - $65.50
Q1 2016	360,164	$22,922	$54.76	$50.58 - $59.11
Q4 2015	372,098	$23,706	$56.88	$45.12 - $63.43
Q3 2015	274,427	$14,051	$45.23	$37.18 - $48.10
Q2 2015	486,153	$24,653	$48.11	$44.76 - $50.50
Q1 2015	406,974	$21,427	$45.64	$40.76 - $50.87
Q4 2014	245,822	$12,227	$40.54	$30.68 - $45.83
Q3 2014	311,652	$13,728	$39.57	$36.40 - $43.40
Q2 2014	432,802	$18,330	$34.76	$31.35 - $38.50
Q1 2014	375,837	$14,572	$31.60	$27.60 - $35.10
Q4 2013	460,509	$15,962	$28.65	$24.43 - $31.16
Q3 2013	425,889	$12,896	$25.18	$21.26 - $28.18
Q2 2013	611,299	$14,739	$21.28	$18.50 - $22.86