Monolithic Power Systems Inc

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Monolithic Power Systems Inc
TickerMPWR
CIK #0001280452
CUSIP609839105
SectorManufacturing - Semiconductors & Related Devices
Address6409 Guadalupe Mines Road, San Jose, CA 95120
Source [EDGAR]
CIK Filing 2011 - 2025
[0001280452] 10-K
[0001280452] 10-Q
[0001280452] 3
[0001280452] 4
[0001280452] 5
[0001280452] 8-K
[0001280452] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Price T Rowe Associates Inc /MD/ Monolithic Power Systems Inc [2024-02-14] 4.6
FMR LLC Monolithic Power Systems Inc [2024-02-09] 0.0
Price T Rowe Associates Inc /MD/ Monolithic Power Systems Inc [2023-02-14] 7.8
BlackRock Inc Monolithic Power Systems Inc [2023-01-20] 11.6
Franklin Resources Inc Monolithic Power Systems Inc [2019-01-28] 5.3
RS Investment Management Co LLC Monolithic Power Systems Inc [2016-02-12] 5.35
Earnest Partners LLC Monolithic Power Systems Inc [2014-02-14] 5.5
Citadel Advisors LLC Monolithic Power Systems Inc [2013-12-27] 5.0
[2013-04-08] None
FMR LLC Monolithic Power Systems Inc [2012-09-10] 0.0
Janus Capital Management LLC Monolithic Power Systems Inc [2012-02-14] 6.0
Vanguard Group Inc Monolithic Power Systems Inc [2012-02-10] 5.27
Columbia Wanger Asset Management LLC Monolithic Power Systems Inc [2012-02-10] 6.2
Massachusetts Financial Services Co /MA/ Monolithic Power Systems Inc [2012-01-31] 5.4
Form 3/4/5 Filer 2011 - 2025
Hsing Michael
Monolithic Power Systems Inc
Zhou Jeff
Xiao Deming
Sciammas Maurice
Blegen Theodore
Chang KUO Wei Herbert
Tseng Saria
Wynne Eileen
Lee Victor K
Elmiger Eugen J
Martinez Carintia
Moyer James C
Smith-Bogart Karen A
Rao Meera
McBurnie Douglas M
Ueunten Paul
Form 13F Holdings
Firm Period DFND Voting Shares
Vanguard Group Inc [2025-06-30] SOLE 0 5,709,572
BlackRock, Inc. [2025-06-30] SOLE 4,850,105 5,229,158
FMR LLC [2025-06-30] DFND 3,170,274 3,392,704
State Street Corp [2025-06-30] DFND 1,280,383 2,120,034
Geode Capital Management LLC [2025-06-30] DFND 1,317,472 1,318,541
Invesco Ltd. [2025-06-30] DFND 0 1,166,059
Franklin Resources Inc [2025-06-30] DFND 1,084,860 1,088,223
Brown Advisory Inc [2025-06-30] DFND 797,738 864,309
JPMorgan Chase & Co [2025-06-30] DFND 777,087 856,307
Wellington Management Group LLP [2025-06-30] DFND 0 703,151
Bank of America Corp /DE/ [2025-06-30] DFND 21,583 692,747
Norges Bank [2025-06-30] SOLE 598,887 598,887
Morgan Stanley [2025-06-30] DFND 466,137 565,019
Rafferty Asset Management LLC [2025-06-30] SOLE 529,124 529,124
FIL Ltd [2025-06-30] DFND 499,777 523,073
Goldman Sachs Group Inc [2025-06-30] DFND 515,781 521,548
UBS Group AG [2025-06-30] DFND 465,232 502,536
Northern Trust Corp [2025-06-30] DFND 475,721 478,019
Massachusetts Financial Services Co /MA/ [2025-06-30] SOLE 383,098 383,098
Susquehanna International Group LLP [2025-06-30] OTR 76,073 369,973
Legal & General Group Plc [2025-06-30] DFND 294,527 350,574
Charles Schwab Investment Management Inc [2025-06-30] SOLE 343,950 343,961
Bank of New York Mellon Corp [2025-06-30] DFND 271,878 330,556
AllianceBernstein LP [2025-06-30] DFND 193,795 314,136
Raymond James Financial Inc [2025-06-30] DFND 254,335 286,448
Citigroup Inc [2025-06-30] DFND 278,929 278,929
Vaughan Nelson Investment Management LP [2025-06-30] DFND 199,362 272,047
First Trust Advisors LP [2025-06-30] SOLE 269,179 269,179
Vanguard Group Inc [2025-06-30] DFND 0 230,374
Voya Investment Management LLC [2025-06-30] DFND 0 228,135
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