Janus Henderson Group PLC Monolithic Power Systems Inc Transaction History

Janus Henderson Group PLC

$194 Billion
Q2 2025

A detailed history of Janus Henderson Group PLC transactions in Monolithic Power Systems Inc stock. As of the latest transaction made, Janus Henderson Group PLC holds 127,429 shares of MPWR stock, worth $139 Million. This represents 0.05% of its overall portfolio holdings.

Number of Shares

127,429

Previous 105,613 20.66%

Holding current value

$139 Million

Previous $61.3 Million 52.15%

% of portfolio

0.05%

Previous 0.04%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 14, 2025	BUY	$455.19 - $737.73 $9.93 Million - $16.1 Million	21,816 Added 20.66%	127,429 $93.2 Million
Q1 2025 May 15, 2025	BUY	$565.7 - $720.25 $56.4 Million - $71.8 Million	99,668 Added 1676.5%	105,613 $61.3 Million
Q4 2024 Feb 14, 2025	SELL	$560.06 - $942.58 $28,563 - $48,071	-51 Reduced 0.85%	5,945 $3.52 Million
Q3 2024 Nov 14, 2024	BUY	$757.04 - $947.16 $1.62 Million - $2.02 Million	2,134 Added 55.26%	5,996 $5.55 Million
Q2 2024 Aug 14, 2024	SELL	$591.52 - $852.56 $672,558 - $969,360	-1,137 Reduced 22.74%	3,862 $3.17 Million
Q1 2024 May 15, 2024	BUY	$571.06 - $767.6 $1,142 - $1,535	2 Added 0.04%	4,999 $3.39 Million
Q4 2023 Feb 14, 2024	SELL	$399.73 - $637.39 $14,390 - $22,946	-36 Reduced 0.72%	4,997 $3.15 Million
Q3 2023 Nov 14, 2023	SELL	$440.38 - $588.72 $81,910 - $109,501	-186 Reduced 3.56%	5,033 $2.33 Million
Q2 2023 Aug 14, 2023	SELL	$398.61 - $540.23 $222,424 - $301,448	-558 Reduced 9.66%	5,219 $2.82 Million
Q1 2023 May 15, 2023	BUY	$342.95 - $530.09 $400,222 - $618,615	1,167 Added 25.31%	5,777 $2.89 Million
Q4 2022 Feb 14, 2023	BUY	$309.2 - $405.03 $1.43 Million - $1.87 Million	4,610 New	4,610 $1.63 Million
Q3 2022 Nov 14, 2022	BUY	$363.4 - $536.88 $1,453 - $2,147	4 Added 0.09%	4,609 $1.68 Million
Q2 2022 Aug 15, 2022	SELL	$384.04 - $479.19 $246,169 - $307,160	-641 Reduced 12.22%	4,605 $1.77 Million
Q1 2022 May 16, 2022	BUY	$361.12 - $512.21 $449,594 - $637,701	1,245 Added 31.12%	5,246 $2.55 Million
Q4 2021 Feb 14, 2022	BUY	$460.83 - $575.97 $83,871 - $104,826	182 Added 4.77%	4,001 $1.98 Million
Q3 2021 Nov 16, 2021	SELL	$370.18 - $517.92 $58,858 - $82,349	-159 Reduced 4.0%	3,819 $1.85 Million
Q2 2021 Aug 16, 2021	BUY	$306.1 - $389.53 $13,468 - $17,139	44 Added 1.12%	3,978 $1.49 Million
Q1 2021 May 17, 2021	SELL	$302.05 - $403.18 $1.03 Million - $1.37 Million	-3,406 Reduced 46.4%	3,934 $1.39 Million
Q4 2020 Feb 16, 2021	SELL	$272.37 - $366.23 $1.56 Million - $2.1 Million	-5,722 Reduced 43.81%	7,340 $2.69 Million
Q3 2020 Nov 16, 2020	SELL	$235.55 - $282.85 $563,671 - $676,860	-2,393 Reduced 15.48%	13,062 $3.65 Million
Q2 2020 Aug 14, 2020	BUY	$153.42 - $237.0 $1.21 Million - $1.86 Million	7,855 Added 103.36%	15,455 $3.66 Million
Q1 2020 May 14, 2020	SELL	$135.22 - $191.43 $34.1 Million - $48.3 Million	-252,094 Reduced 97.07%	7,600 $1.27 Million
Q4 2019 Feb 18, 2020	SELL	$135.15 - $182.89 $355,174 - $480,634	-2,628 Reduced 1.0%	259,694 $46.2 Million
Q3 2019 Nov 14, 2019	BUY	$136.01 - $161.55 $136,282 - $161,873	1,002 Added 0.38%	262,322 $40.8 Million
Q2 2019 Jul 31, 2019	SELL	$116.45 - $157.53 $189,231 - $255,986	-1,625 Reduced 0.62%	261,320 $35.5 Million
Q1 2019 Apr 30, 2019	BUY	$108.61 - $145.01 $331,803 - $443,005	3,055 Added 1.18%	262,945 $35.6 Million
Q4 2018 Feb 06, 2019	SELL	$104.17 - $134.73 $751,899 - $972,481	-7,218 Reduced 2.7%	259,890 $30.2 Million
Q3 2018 Nov 09, 2018	SELL	$125.53 - $151.38 $198,839 - $239,785	-1,584 Reduced 0.59%	267,108 $33.5 Million
Q2 2018 Aug 10, 2018	BUY	$110.8 - $141.63 $1.69 Million - $2.16 Million	15,237 Added 6.01%	268,692 $35.9 Million
Q1 2018 May 14, 2018	BUY	$103.82 - $125.51 $2.86 Million - $3.46 Million	27,541 Added 12.19%	253,455 $29.3 Million
Q4 2017 Feb 09, 2018	BUY	$107.55 - $126.64 $12 Million - $14.1 Million	111,725 Added 97.84%	225,914 $25.4 Million
Q3 2017 Nov 14, 2017	SELL	$95.87 - $106.55 $3.22 Million - $3.58 Million	-33,554 Reduced 22.71%	114,189 $0
Q2 2017 Aug 17, 2017	BUY	N/A	147,743	147,743 $14.2 Million

Others Institutions Holding MPWR

# of Institutions

1,058

Shares Held

45.2M

Call Options Held

306K

Put Options Held

430K

View Full List

About MONOLITHIC POWER SYSTEMS INC

Ticker MPWR
Exchange NASDAQ
Sector Technology
Industry Semiconductors
Shares Outstandng 46,941,000
Market Cap $51.1B
Description
Monolithic Power Systems, Inc. engages in the design, development, marketing, and sale of semiconductor-based power electronics solutions for the computing and storage, automotive, industrial, communications, and consumer markets. The company provides direct current (DC) to DC integrated circuits (ICs) that are used to convert and control voltag...

More about MPWR

Track This Portfolio

Portfolio Update

Get notified when there are updates to the investment portfolio of Janus Henderson Group PLC, based on Form 13F filings with the SEC.

News

Stay updated on Janus Henderson Group PLC with notifications on news.

Account

Janus Henderson Group PLC Monolithic Power Systems Inc Transaction History