Whittier Trust CO Monolithic Power Systems Inc Transaction History

Whittier Trust CO

  • $8.62 Billion
  • Q3 2025

A detailed history of Whittier Trust CO transactions in Monolithic Power Systems Inc stock. As of the latest transaction made, Whittier Trust CO holds 44,201 shares of MPWR stock, worth $40.7 Million. This represents 0.47% of its overall portfolio holdings.

Number of Shares
44,201
Previous 43,523 1.56%
Holding current value
$40.7 Million
Previous $31.8 Million 27.84%
% of portfolio
0.47%
Previous 0.39%

Shares

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

Oct 31, 2025
BUY
$711.24 - $922.81 $482,220 - $625,665
678 Added 1.56%
44,201 $40.7 Million
Q2 2025

Jul 30, 2025
BUY
$455.19 - $737.73 $472,032 - $765,026
1,037 Added 2.44%
43,523 $31.8 Million
Q1 2025

May 02, 2025
BUY
$565.7 - $720.25 $539,677 - $687,118
954 Added 2.3%
42,486 $24.6 Million
Q4 2024

Feb 11, 2025
BUY
$560.06 - $942.58 $695,594 - $1.17 Million
1,242 Added 3.08%
41,532 $24.6 Million
Q3 2024

Oct 21, 2024
BUY
$757.04 - $947.16 $1.06 Million - $1.33 Million
1,406 Added 3.62%
40,290 $37.3 Million
Q2 2024

Jul 26, 2024
BUY
$591.52 - $852.56 $1.06 Million - $1.53 Million
1,793 Added 4.83%
38,884 $32 Million
Q1 2024

May 02, 2024
BUY
$571.06 - $767.6 $725,817 - $975,619
1,271 Added 3.55%
37,091 $25.1 Million
Q4 2023

Jan 11, 2024
SELL
$399.73 - $637.39 $1.19 Million - $1.89 Million
-2,967 Reduced 7.65%
35,820 $22.6 Million
Q3 2023

Oct 27, 2023
BUY
$440.38 - $588.72 $372,561 - $498,057
846 Added 2.23%
38,787 $17.9 Million
Q2 2023

Jul 24, 2023
SELL
$398.61 - $540.23 $1.86 Million - $2.52 Million
-4,658 Reduced 10.93%
37,941 $20.5 Million
Q1 2023

Apr 21, 2023
BUY
$342.95 - $530.09 $1.2 Million - $1.86 Million
3,507 Added 8.97%
42,599 $21.3 Million
Q4 2022

Jan 25, 2023
SELL
$309.2 - $405.03 $2.97 Million - $3.89 Million
-9,609 Reduced 19.73%
39,092 $0
Q3 2022

Oct 21, 2022
BUY
$363.4 - $536.88 $723,529 - $1.07 Million
1,991 Added 4.26%
48,701 $17.7 Million
Q2 2022

Jul 28, 2022
BUY
$384.04 - $479.19 $194,324 - $242,470
506 Added 1.1%
46,710 $17.9 Million
Q1 2022

Apr 29, 2022
BUY
$361.12 - $512.21 $679,266 - $963,467
1,881 Added 4.24%
46,204 $22.4 Million
Q4 2021

Jan 19, 2022
SELL
$460.83 - $575.97 $2.34 Million - $2.93 Million
-5,084 Reduced 10.29%
44,323 $21.9 Million
Q3 2021

Nov 01, 2021
SELL
$370.18 - $517.92 $194,344 - $271,908
-525 Reduced 1.05%
49,407 $23.9 Million
Q2 2021

Jul 29, 2021
BUY
$306.1 - $389.53 $858,916 - $1.09 Million
2,806 Added 5.95%
49,932 $18.6 Million
Q1 2021

Apr 26, 2021
BUY
$302.05 - $403.18 $979,548 - $1.31 Million
3,243 Added 7.39%
47,126 $16.6 Million
Q4 2020

Jan 29, 2021
SELL
$272.37 - $366.23 $3.68 Million - $4.94 Million
-13,500 Reduced 23.53%
43,883 $16.1 Million
Q3 2020

Oct 30, 2020
BUY
$235.55 - $282.85 $122,250 - $146,799
519 Added 0.91%
57,383 $16 Million
Q2 2020

Jul 10, 2020
SELL
$153.42 - $237.0 $135,776 - $209,745
-885 Reduced 1.53%
56,864 $13.5 Million
Q1 2020

Apr 27, 2020
BUY
$135.22 - $191.43 $396,329 - $561,081
2,931 Added 5.35%
57,749 $9.67 Million
Q4 2019

Jan 31, 2020
BUY
$135.15 - $182.89 $171,505 - $232,087
1,269 Added 2.37%
54,818 $9.76 Million
Q3 2019

Oct 18, 2019
BUY
$136.01 - $161.55 $76,301 - $90,629
561 Added 1.06%
53,549 $8.33 Million
Q2 2019

Jul 23, 2019
BUY
$116.45 - $157.53 $255,957 - $346,250
2,198 Added 4.33%
52,988 $7.2 Million
Q1 2019

Apr 29, 2019
BUY
$108.61 - $145.01 $285,318 - $380,941
2,627 Added 5.45%
50,790 $6.88 Million
Q4 2018

Feb 07, 2019
BUY
$104.17 - $134.73 $279,592 - $361,615
2,684 Added 5.9%
48,163 $5.6 Million
Q3 2018

Oct 23, 2018
BUY
$125.53 - $151.38 $23,474 - $28,308
187 Added 0.41%
45,479 $5.71 Million
Q2 2018

Jul 27, 2018
BUY
$110.8 - $141.63 $195,229 - $249,552
1,762 Added 4.05%
45,292 $6.06 Million
Q2 2018

Jul 20, 2018
BUY
$110.8 - $141.63 $102,822 - $131,432
928 Added 2.18%
43,530 $1.84 Million
Q1 2018

May 01, 2018
BUY
$103.82 - $125.51 $60,527 - $73,172
583 Added 1.39%
42,602 $4.93 Million
Q4 2017

Feb 07, 2018
BUY
$107.55 - $126.64 $81,415 - $95,866
757 Added 1.83%
42,019 $4.72 Million
Q3 2017

Oct 23, 2017
BUY
$95.87 - $106.55 $3.96 Million - $4.4 Million
41,262
41,262 $4.4 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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