Home
Latest Filings
Latest Buys
Latest Sells
Institutions
Derivatives
Hot Buys
Data Screener
Email Alerts
Insider Charts
MPWR
- As of 05/09/24, 01:47:55 AM: 116 Insider Transactions.
Sector:
Technology
Industry:
Semiconductor - Specialized
Prev Close:
$69.81
Avg Vol(3m):
280,398
P/E:
72.70
EPS:
0.96
Email this page to a friend.
Insider Transactions for MPWR
Buy/Sell*
Filed Date
Subject
Symbol
Acquirer
Pct Owned
Details
B
2020-02-12 08:09:02.0
MONOLITHIC POWER SYSTEMS INC
MPWR
VANGUARD GROUP INC
8.83%
view
S
2020-02-05 13:33:34.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FRANKLIN RESOURCES INC
4.9%
view
B
2020-02-04 12:16:14.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
10.6%
view
B
2019-06-07 16:59:00.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
10.2%
view
S
2019-02-13 11:58:22.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
3.378%
view
B
2019-02-11 13:34:54.0
MONOLITHIC POWER SYSTEMS INC
MPWR
VANGUARD GROUP INC
8.63%
view
S
2019-02-06 15:03:14.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
9.8%
view
B
2019-01-28 14:44:49.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FRANKLIN RESOURCES INC
5.3%
view
B
2018-02-09 14:19:38.0
MONOLITHIC POWER SYSTEMS INC
MPWR
VANGUARD GROUP INC
8.13%
view
S
2018-01-19 13:55:18.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
10.1%
view
S
2017-02-14 11:39:23.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
8.398%
view
B
2017-02-10 09:59:06.0
MONOLITHIC POWER SYSTEMS INC
MPWR
VANGUARD GROUP INC
7.07%
view
B
2017-02-08 15:42:29.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
10.3%
view
B
2017-01-25 14:46:00.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
9.8%
view
S
2016-11-02 18:21:07.0
MONOLITHIC POWER SYSTEMS INC
MPWR
RS INVESTMENT MANAGEMENT CO LLC
0.0%
view
S
2016-02-16 10:43:57.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ADAGE CAPITAL PARTNERS GP LLC
1.13%
view
B
2016-02-11 20:02:33.0
MONOLITHIC POWER SYSTEMS INC
MPWR
RS INVESTMENT MANAGEMENT CO LLC
5.35%
view
B
2016-01-26 16:40:26.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
9.0%
view
S
2015-02-17 16:35:39.0
MONOLITHIC POWER SYSTEMS INC
MPWR
CITADEL ADVISORS LLC
2.8%
view
S
2015-02-17 15:32:04.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ADAGE CAPITAL PARTNERS GP LLC
5.15%
view
S
2015-02-13 10:27:42.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
10.018%
view
B
2015-02-11 10:15:42.0
MONOLITHIC POWER SYSTEMS INC
MPWR
VANGUARD GROUP INC
6.38%
view
B
2015-01-23 15:15:26.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
8.2%
view
S
2014-11-10 11:04:43.0
MONOLITHIC POWER SYSTEMS INC
MPWR
EARNEST PARTNERS LLC
4.8%
view
B
2014-10-10 14:13:31.0
MONOLITHIC POWER SYSTEMS INC
MPWR
EARNEST PARTNERS LLC
5.1%
view
S
2014-07-10 16:45:47.0
MONOLITHIC POWER SYSTEMS INC
MPWR
EARNEST PARTNERS LLC
5.0%
view
S
2014-05-02 14:48:30.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ADAGE CAPITAL PARTNERS GP LLC
5.42%
view
B
2014-02-14 16:12:20.0
MONOLITHIC POWER SYSTEMS INC
MPWR
CITADEL ADVISORS LLC
5.1%
view
B
2014-02-14 10:41:42.0
MONOLITHIC POWER SYSTEMS INC
MPWR
EARNEST PARTNERS LLC
5.5%
view
S
2014-02-14 06:54:30.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
10.837%
view
B
2014-02-11 13:53:12.0
MONOLITHIC POWER SYSTEMS INC
MPWR
VANGUARD GROUP INC
5.77%
view
S
2014-02-03 11:41:33.0
MONOLITHIC POWER SYSTEMS INC
MPWR
COLUMBIA WANGER ASSET MANAGEMENT LLC
n/a
view
B
2014-01-29 21:44:41.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
8.0%
view
B
2013-12-27 09:25:02.0
MONOLITHIC POWER SYSTEMS INC
MPWR
CITADEL ADVISORS LLC
5.0%
view
B
2013-04-08 14:28:33.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ADAGE CAPITAL PARTNERS GP LLC
5.6%
view
S
2013-02-14 14:07:29.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
14.997%
view
S
2013-02-14 13:13:35.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FRONTIER CAPITAL MANAGEMENT CO LLC
5.857%
view
B
2013-02-13 18:39:12.0
MONOLITHIC POWER SYSTEMS INC
MPWR
COLUMBIA WANGER ASSET MANAGEMENT LLC
6.4%
view
B
2013-02-12 13:02:53.0
MONOLITHIC POWER SYSTEMS INC
MPWR
VANGUARD GROUP INC
5.56%
view
S
2013-02-07 15:49:49.0
MONOLITHIC POWER SYSTEMS INC
MPWR
MASSACHUSETTS FINANCIAL SERVICES CO
4.3%
view
S
2013-02-05 10:06:56.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
6.47%
view
S
2013-02-04 15:42:25.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BLAIR WILLIAM & CO
0.84%
view
S
2013-01-31 16:09:45.0
MONOLITHIC POWER SYSTEMS INC
MPWR
JANUS CAPITAL MANAGEMENT LLC
0.0%
view
B
2012-09-10 14:05:35.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
15.0%
view
S
2012-08-07 11:45:43.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BLAIR WILLIAM & CO
5.66%
view
B
2012-02-14 16:48:38.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FRONTIER CAPITAL MANAGEMENT CO LLC
9.303%
view
B
2012-02-14 15:58:44.0
MONOLITHIC POWER SYSTEMS INC
MPWR
JANUS CAPITAL MANAGEMENT LLC
6.0%
view
S
2012-02-13 12:22:30.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
6.77%
view
B
2012-02-10 17:28:26.0
MONOLITHIC POWER SYSTEMS INC
MPWR
COLUMBIA WANGER ASSET MANAGEMENT LLC
6.2%
view
B
2012-02-10 07:42:42.0
MONOLITHIC POWER SYSTEMS INC
MPWR
VANGUARD GROUP INC
5.27%
view
B
2012-01-31 10:08:19.0
MONOLITHIC POWER SYSTEMS INC
MPWR
MASSACHUSETTS FINANCIAL SERVICES CO
5.4%
view
B
2012-01-30 13:04:06.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BLAIR WILLIAM & CO
11.12%
view
S
2011-05-10 15:37:20.0
MONOLITHIC POWER SYSTEMS INC
MPWR
WELLS FARGO & CO
3.77%
view
B
2011-05-10 12:41:55.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BLAIR WILLIAM & CO
11.02%
view
B
2011-02-14 18:53:33.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FRONTIER CAPITAL MANAGEMENT CO LLC
9.008%
view
S
2011-02-10 14:57:56.0
MONOLITHIC POWER SYSTEMS INC
MPWR
COLUMBIA WANGER ASSET MANAGEMENT LLC
n/a
view
B
2011-02-07 20:30:59.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BLAIR WILLIAM & CO
7.38%
view
B
2011-02-07 13:56:19.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BlackRock Inc
7.14%
view
S
2011-01-20 09:54:06.0
MONOLITHIC POWER SYSTEMS INC
MPWR
WELLS FARGO & CO
5.73%
view
S
2010-12-10 16:11:32.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
4.466%
view
B
2010-06-10 18:17:55.0
MONOLITHIC POWER SYSTEMS INC
MPWR
WELLS FARGO & CO
10.36%
view
S
2010-04-12 10:39:03.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ALGER FRED MANAGEMENT INC
4.87%
view
B
2010-02-16 12:54:03.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
11.376%
view
S
2010-02-16 11:02:44.0
MONOLITHIC POWER SYSTEMS INC
MPWR
KINGDOM RIDGE CAPITAL MASTER FUND
0.29%
view
B
2010-02-16 09:25:43.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ALGER FRED MANAGEMENT INC
6.66%
view
B
2010-02-01 16:36:50.0
MONOLITHIC POWER SYSTEMS INC
MPWR
COLUMBIA WANGER ASSET MANAGEMENT LP
5.5%
view
S
2010-01-21 13:01:56.0
MONOLITHIC POWER SYSTEMS INC
MPWR
WELLS FARGO & CO
5.69%
view
B
2009-11-10 15:41:20.0
MONOLITHIC POWER SYSTEMS INC
MPWR
FMR LLC
11.181%
view
B
2009-03-09 17:28:12.0
MONOLITHIC POWER SYSTEMS INC
MPWR
WELLS FARGO & CO
12.0%
view
B
2009-02-17 13:50:31.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ARTIS CAPITAL MANAGEMENT
12.0%
view
S
2009-02-13 07:17:44.0
MONOLITHIC POWER SYSTEMS INC
MPWR
AXA FINANCIAL INC
0.2%
view
B
2009-02-11 10:39:56.0
MONOLITHIC POWER SYSTEMS INC
MPWR
TimesSquare Capital Management
5.9%
view
S
2009-02-06 06:20:27.0
MONOLITHIC POWER SYSTEMS INC
MPWR
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
n/a
view
S
2009-01-26 13:17:24.0
MONOLITHIC POWER SYSTEMS INC
MPWR
Moyer James C
4.45%
view
S
2009-01-26 13:16:08.0
MONOLITHIC POWER SYSTEMS INC
MPWR
CHANG KUO WEI HERBERT
1.63%
view
B
2008-12-15 17:16:55.0
MONOLITHIC POWER SYSTEMS INC
MPWR
KINGDOM RIDGE CAPITAL MASTER FUND
5.29%
view
B
2008-11-10 20:18:40.0
MONOLITHIC POWER SYSTEMS INC
MPWR
WELLS FARGO & CO
10.34%
view
B
2008-06-06 06:03:53.0
MONOLITHIC POWER SYSTEMS INC
MPWR
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
5.6%
view
B
2008-04-09 14:42:11.0
MONOLITHIC POWER SYSTEMS INC
MPWR
SELIGMAN J & W & CO INC
10.68%
view
S
2008-02-14 15:35:43.0
MONOLITHIC POWER SYSTEMS INC
MPWR
Moyer James C
5.16%
view
S
2008-02-14 15:35:42.0
MONOLITHIC POWER SYSTEMS INC
MPWR
CHANG KUO WEI HERBERT
4.0%
view
S
2008-02-14 15:35:42.0
MONOLITHIC POWER SYSTEMS INC
MPWR
Hsing Michael
4.84%
view
B
2008-02-14 07:25:48.0
MONOLITHIC POWER SYSTEMS INC
MPWR
AXA FINANCIAL INC
5.5%
view
B
2008-02-13 19:26:51.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ARTIS CAPITAL MANAGEMENT
5.4%
view
S
2008-02-13 19:06:34.0
MONOLITHIC POWER SYSTEMS INC
MPWR
LAFFONT PHILIPPE
2.8%
view
S
2008-01-25 19:15:19.0
MONOLITHIC POWER SYSTEMS INC
MPWR
SELIGMAN J & W & CO INC
6.8%
view
S
2007-12-13 10:40:06.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BANK OF AMERICA CORP
5.0%
view
S
2007-10-10 16:23:31.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ARTIS CAPITAL MANAGEMENT
4.9%
view
B
2007-02-14 15:13:29.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ARTIS CAPITAL MANAGEMENT
14.16%
view
S
2007-02-13 14:32:36.0
MONOLITHIC POWER SYSTEMS INC
MPWR
BAVP
7.05%
view
B
2007-02-13 13:15:34.0
MONOLITHIC POWER SYSTEMS INC
MPWR
SELIGMAN J & W & CO INC
12.17%
view
B
2007-02-12 12:00:19.0
MONOLITHIC POWER SYSTEMS INC
MPWR
LAFFONT PHILIPPE
7.25%
view
S
2007-02-07 17:01:23.0
MONOLITHIC POWER SYSTEMS INC
MPWR
Moyer James C
6.08%
view
S
2007-02-07 16:59:47.0
MONOLITHIC POWER SYSTEMS INC
MPWR
Hsing Michael
6.98%
view
B
2007-01-18 15:59:51.0
MONOLITHIC POWER SYSTEMS INC
MPWR
SELIGMAN TECH SPECTRUM
5.23%
view
B
2006-11-09 15:53:09.0
MONOLITHIC POWER SYSTEMS INC
MPWR
ARTIS CAPITAL MANAGEMENT
11.3%
view
B
2006-09-01 17:16:20.0
MONOLITHIC POWER SYSTEMS INC
MPWR
SELIGMAN J & W & CO INC
10.09%
view
S
2006-08-10 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
FMR CORP
n/a
view
S
2006-05-10 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
SELIGMAN J & W & CO INC
7.08%
view
S
2006-04-19 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
BANK OF AMERICA CORP
7.51%
view
B
2006-03-06 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
SELIGMAN J & W & CO INC
10.6%
view
B
2006-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
FMR CORP
n/a
view
S
2006-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
Moyer James C
6.8%
view
B
2006-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
Hsing Michael
7.32%
view
S
2006-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
CHANG KUO WEI HERBERT
14.41%
view
B
2006-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
LAFFONT PHILIPPE
6.81%
view
B
2006-02-13 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
SELIGMAN J & W & CO INC
9.18%
view
B
2006-02-08 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
BANK OF AMERICA CORP
8.14%
view
S
2005-12-13 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
SELIGMAN J & W & CO INC
8.65%
view
B
2005-08-12 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
SELIGMAN J & W & CO INC
11.34%
view
B
2005-08-04 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
LAFFONT PHILIPPE
5.45%
view
B
2005-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
CHWANG RONALD
6.9%
view
B
2005-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
CHANG KUO WEI HERBERT
15.1%
view
B
2005-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
Moyer James C
6.9%
view
B
2005-02-14 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
Hsing Michael
7.0%
view
B
2005-02-11 00:00:00.0
MONOLITHIC POWER SYSTEMS INC
770466789
BAVP
8.61%
view
* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.