American Century Companies Inc Monolithic Power Systems Inc Transaction History

American Century Companies Inc

  • $188 Billion
  • Q3 2025

A detailed history of American Century Companies Inc transactions in Monolithic Power Systems Inc stock. As of the latest transaction made, American Century Companies Inc holds 214,950 shares of MPWR stock, worth $198 Million. This represents 0.11% of its overall portfolio holdings.

Number of Shares
214,950
Previous 181,926 18.15%
Holding current value
$198 Million
Previous $133 Million 48.73%
% of portfolio
0.11%
Previous 0.08%

Shares

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

Nov 12, 2025
BUY
$711.24 - $922.81 $23.5 Million - $30.5 Million
33,024 Added 18.15%
214,950 $198 Million
Q2 2025

Aug 12, 2025
SELL
$455.19 - $737.73 $9.67 Million - $15.7 Million
-21,248 Reduced 10.46%
181,926 $133 Million
Q1 2025

May 13, 2025
BUY
$565.7 - $720.25 $4.25 Million - $5.41 Million
7,511 Added 3.84%
203,174 $118 Million
Q4 2024

Feb 11, 2025
SELL
$560.06 - $942.58 $16.7 Million - $28.2 Million
-29,893 Reduced 13.25%
195,663 $116 Million
Q3 2024

Nov 12, 2024
SELL
$757.04 - $947.16 $7.53 Million - $9.43 Million
-9,952 Reduced 4.23%
225,556 $209 Million
Q2 2024

Aug 07, 2024
BUY
$591.52 - $852.56 $746,498 - $1.08 Million
1,262 Added 0.54%
235,508 $194 Million
Q1 2024

May 14, 2024
SELL
$571.06 - $767.6 $25.9 Million - $34.8 Million
-45,373 Reduced 16.23%
234,246 $159 Million
Q4 2023

Feb 13, 2024
BUY
$399.73 - $637.39 $112 Million - $178 Million
279,619 New
279,619 $176 Million
Q3 2023

Nov 13, 2023
BUY
$440.38 - $588.72 $560,603 - $749,440
1,273 Added 0.47%
272,036 $126 Million
Q2 2023

Aug 14, 2023
SELL
$398.61 - $540.23 $4.97 Million - $6.73 Million
-12,466 Reduced 4.4%
270,763 $146 Million
Q1 2023

May 11, 2023
SELL
$342.95 - $530.09 $12.6 Million - $19.5 Million
-36,843 Reduced 11.51%
283,229 $142 Million
Q4 2022

Feb 13, 2023
SELL
$309.2 - $405.03 $29.2 Million - $38.3 Million
-94,572 Reduced 22.81%
320,072 $113 Million
Q3 2022

Nov 14, 2022
SELL
$363.4 - $536.88 $18.7 Million - $27.7 Million
-51,512 Reduced 11.05%
414,644 $151 Million
Q2 2022

Aug 12, 2022
BUY
$384.04 - $479.19 $28.2 Million - $35.1 Million
73,306 Added 18.66%
466,156 $179 Million
Q1 2022

May 11, 2022
BUY
$361.12 - $512.21 $8.74 Million - $12.4 Million
24,205 Added 6.57%
392,850 $191 Million
Q4 2021

Feb 07, 2022
BUY
$460.83 - $575.97 $111 Million - $139 Million
240,599 Added 187.9%
368,645 $182 Million
Q3 2021

Nov 10, 2021
BUY
$370.18 - $517.92 $15.9 Million - $22.2 Million
42,859 Added 50.31%
128,046 $62.1 Million
Q2 2021

Aug 05, 2021
BUY
$306.1 - $389.53 $20.7 Million - $26.3 Million
67,576 Added 383.71%
85,187 $31.8 Million
Q1 2021

May 14, 2021
SELL
$302.05 - $403.18 $798,620 - $1.07 Million
-2,644 Reduced 13.05%
17,611 $6.22 Million
Q4 2020

Feb 12, 2021
SELL
$272.37 - $366.23 $4.9 Million - $6.6 Million
-18,008 Reduced 47.06%
20,255 $7.42 Million
Q3 2020

Nov 13, 2020
BUY
$235.55 - $282.85 $1.14 Million - $1.37 Million
4,855 Added 14.53%
38,263 $10.7 Million
Q2 2020

Aug 13, 2020
SELL
$153.42 - $237.0 $3.99 Million - $6.16 Million
-26,003 Reduced 43.77%
33,408 $7.92 Million
Q1 2020

May 14, 2020
SELL
$135.22 - $191.43 $1.36 Million - $1.93 Million
-10,084 Reduced 14.51%
59,411 $9.95 Million
Q4 2019

Feb 12, 2020
BUY
$135.15 - $182.89 $3.54 Million - $4.79 Million
26,214 Added 60.57%
69,495 $12.4 Million
Q3 2019

Nov 13, 2019
BUY
$136.01 - $161.55 $796,202 - $945,713
5,854 Added 15.64%
43,281 $6.74 Million
Q2 2019

Aug 14, 2019
SELL
$116.45 - $157.53 $207,746 - $281,033
-1,784 Reduced 4.55%
37,427 $5.08 Million
Q1 2019

May 14, 2019
SELL
$108.61 - $145.01 $35,406 - $47,273
-326 Reduced 0.82%
39,211 $0
Q4 2018

Feb 13, 2019
SELL
$104.17 - $134.73 $1.41 Million - $1.83 Million
-13,565 Reduced 25.55%
39,537 $4.6 Million
Q3 2018

Nov 02, 2018
SELL
$125.53 - $151.38 $4.95 Million - $5.97 Million
-39,435 Reduced 42.62%
53,102 $6.67 Million
Q2 2018

Aug 08, 2018
SELL
$110.8 - $141.63 $1.44 Million - $1.84 Million
-13,011 Reduced 12.33%
92,537 $12.4 Million
Q1 2018

May 03, 2018
BUY
$103.82 - $125.51 $719,991 - $870,411
6,935 Added 7.03%
105,548 $12.2 Million
Q4 2017

Feb 02, 2018
BUY
$107.55 - $126.64 $1.23 Million - $1.45 Million
11,456 Added 13.14%
98,613 $11.1 Million
Q3 2017

Nov 01, 2017
BUY
$95.87 - $106.55 $8.36 Million - $9.29 Million
87,157
87,157 $9.29 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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