Massachusetts Financial Services CO Monolithic Power Systems Inc Transaction History

Massachusetts Financial Services CO

  • $303 Billion
  • Q3 2025

A detailed history of Massachusetts Financial Services CO transactions in Monolithic Power Systems Inc stock. As of the latest transaction made, Massachusetts Financial Services CO holds 556,587 shares of MPWR stock, worth $512 Million. This represents 0.17% of its overall portfolio holdings.

Number of Shares
556,587
Previous 485,388 14.67%
Holding current value
$512 Million
Previous $355 Million 44.34%
% of portfolio
0.17%
Previous 0.12%

Shares

34 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Oct 29, 2025
BUY
$711.24 - $922.81 $50.6 Million - $65.7 Million
71,199 Added 14.67%
556,587 $512 Million
Q2 2025

Aug 08, 2025
BUY
$455.19 - $737.73 $12.7 Million - $20.5 Million
27,837 Added 6.08%
485,388 $355 Million
Q1 2025

May 02, 2025
SELL
$565.7 - $720.25 $17.4 Million - $22.1 Million
-30,749 Reduced 6.3%
457,551 $265 Million
Q4 2024

Feb 12, 2025
SELL
$560.06 - $942.58 $106 Million - $179 Million
-189,793 Reduced 27.99%
488,300 $289 Million
Q3 2024

Nov 12, 2024
SELL
$757.04 - $947.16 $199 Million - $249 Million
-263,283 Reduced 27.97%
678,093 $627 Million
Q2 2024

Aug 09, 2024
SELL
$591.52 - $852.56 $25.8 Million - $37.2 Million
-43,665 Reduced 4.43%
941,376 $774 Million
Q1 2024

May 14, 2024
SELL
$571.06 - $767.6 $40.6 Million - $54.6 Million
-71,142 Reduced 6.74%
985,041 $667 Million
Q4 2023

Feb 08, 2024
BUY
$399.73 - $637.39 $1.24 Million - $1.98 Million
3,105 Added 0.29%
1,056,183 $666 Million
Q3 2023

Nov 08, 2023
SELL
$440.38 - $588.72 $16.8 Million - $22.4 Million
-38,133 Reduced 3.49%
1,053,078 $487 Million
Q2 2023

Aug 09, 2023
SELL
$398.61 - $540.23 $15.8 Million - $21.4 Million
-39,696 Reduced 3.51%
1,091,211 $590 Million
Q1 2023

May 10, 2023
BUY
$342.95 - $530.09 $3.76 Million - $5.81 Million
10,954 Added 0.98%
1,130,907 $566 Million
Q4 2022

Feb 13, 2023
SELL
$309.2 - $405.03 $48.5 Million - $63.5 Million
-156,900 Reduced 12.29%
1,119,953 $396 Million
Q3 2022

Nov 09, 2022
BUY
$363.4 - $536.88 $1.34 Million - $1.97 Million
3,675 Added 0.29%
1,276,853 $464 Million
Q2 2022

Aug 09, 2022
BUY
$384.04 - $479.19 $55 Million - $68.7 Million
143,285 Added 12.68%
1,273,178 $489 Million
Q1 2022

May 11, 2022
SELL
$361.12 - $512.21 $5.33 Million - $7.56 Million
-14,757 Reduced 1.29%
1,129,893 $549 Million
Q4 2021

Feb 10, 2022
SELL
$460.83 - $575.97 $34.9 Million - $43.6 Million
-75,697 Reduced 6.2%
1,144,650 $565 Million
Q3 2021

Nov 10, 2021
SELL
$370.18 - $517.92 $4.23 Million - $5.92 Million
-11,429 Reduced 0.93%
1,220,347 $591 Million
Q2 2021

Aug 13, 2021
SELL
$306.1 - $389.53 $5.11 Million - $6.5 Million
-16,696 Reduced 1.34%
1,231,776 $460 Million
Q1 2021

May 13, 2021
BUY
$302.05 - $403.18 $6.98 Million - $9.31 Million
23,095 Added 1.88%
1,248,472 $441 Million
Q4 2020

Feb 12, 2021
SELL
$272.37 - $366.23 $8.35 Million - $11.2 Million
-30,673 Reduced 2.44%
1,225,377 $449 Million
Q3 2020

Nov 12, 2020
BUY
$235.55 - $282.85 $8.28 Million - $9.94 Million
35,147 Added 2.88%
1,256,050 $351 Million
Q2 2020

Aug 11, 2020
BUY
$153.42 - $237.0 $24.9 Million - $38.4 Million
162,053 Added 15.3%
1,220,903 $289 Million
Q1 2020

May 14, 2020
SELL
$135.22 - $191.43 $10.8 Million - $15.3 Million
-79,843 Reduced 7.01%
1,058,850 $177 Million
Q4 2019

Feb 13, 2020
BUY
$135.15 - $182.89 $25.3 Million - $34.2 Million
187,211 Added 19.68%
1,138,693 $203 Million
Q3 2019

Nov 05, 2019
BUY
$136.01 - $161.55 $9.47 Million - $11.2 Million
69,622 Added 7.89%
951,482 $148 Million
Q2 2019

Aug 14, 2019
BUY
$116.45 - $157.53 $20 Million - $27.1 Million
171,789 Added 24.19%
881,860 $120 Million
Q1 2019

May 13, 2019
BUY
$108.61 - $145.01 $4.27 Million - $5.7 Million
39,318 Added 5.86%
710,071 $96.2 Million
Q4 2018

Feb 08, 2019
BUY
$104.17 - $134.73 $11.2 Million - $14.5 Million
107,504 Added 19.09%
670,753 $78 Million
Q3 2018

Oct 25, 2018
SELL
$125.53 - $151.38 $783,934 - $945,368
-6,245 Reduced 1.1%
563,249 $70.7 Million
Q2 2018

Jul 30, 2018
BUY
$110.8 - $141.63 $1.7 Million - $2.17 Million
15,334 Added 2.77%
569,494 $76.1 Million
Q1 2018

May 04, 2018
BUY
$103.82 - $125.51 $207,328 - $250,643
1,997 Added 0.36%
554,160 $64.2 Million
Q4 2017

Feb 14, 2018
BUY
$107.55 - $126.64 $4.93 Million - $5.8 Million
45,818 Added 9.05%
552,163 $62 Million
Q3 2017

Nov 14, 2017
BUY
$95.87 - $106.55 $4.62 Million - $5.14 Million
48,238 Added 10.53%
506,345 $54 Million
Q2 2017

Aug 14, 2017
BUY
N/A
458,107
458,107 $44.2 Million

Others Institutions Holding MPWR

# of Institutions
1,094
Shares Held
66.4M
Call Options Held
391K
Put Options Held
403K
View Full List

About MONOLITHIC POWER SYSTEMS INC

MPWR Quotes by TradingView
  • Ticker MPWR
  • Exchange NASDAQ
  • Sector Technology
  • Industry Semiconductors
  • Shares Outstandng 46,941,000
  • Market Cap $43.2B
  • 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
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