What does CUSIP 609839105 represent in this 13F holders report?

CUSIP 609839105 is the security identifier for MPWR - MONOLITHIC POWER SYSTEMS INC - Common Stock used to aggregate holder disclosures.

How many institutions held MPWR - MONOLITHIC POWER SYSTEMS INC - Common Stock in Q1 2017?

286 institutional investors reported MPWR - MONOLITHIC POWER SYSTEMS INC - Common Stock for Q1 2017. Use the holders table for investor-level position and value details.

MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR)

CUSIP: 609839105

Q1 2017 13F Holders as of 31 Mar 2017

Type / Class: Equity / Common Stock
Shares outstanding: 47,915,757
Total 13F shares: 38,307,935
Share change: +2,763,528
Total reported value: $3,528,140,646
Put/Call ratio: 120%
Price per share: $92.10
Number of holders: 286
Value change: +$259,835,652
Number of buys: 156
Number of sells: 123

Quarterly Holders Quick Answers

What is CUSIP 609839105?
CUSIP 609839105 identifies MPWR - MONOLITHIC POWER SYSTEMS INC - Common Stock in SEC institutional holdings data.

Need full ownership history?
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Related Filing Research

Latest 13F filings for newly reported positions.
Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
Latest 10-Q/10-K reports for financial context tied to this issuer.
Recent insider transactions for executive and insider activity.
SEC investors directory and top value investors for manager drilldown.
Back to full security ownership history.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2017
Previous quarter: Q4 2016

Recent filing periods for CUSIP 609839105:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of MPWR - MONOLITHIC POWER SYSTEMS INC - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
FMR LLC	13F	Company	7.1%	3,415,994	$279,873,000	—	31 Dec 2016	13F
VANGUARD GROUP INC	13F	Company	6%	2,877,732	$235,772,000	—	31 Dec 2016	13F
BlackRock Fund Advisors	13F	Company	4.8%	2,298,459	$188,313,000	—	31 Dec 2016	13F
WELLS FARGO & COMPANY/MN	13F	Company	2.8%	1,352,044	$110,773,000	—	31 Dec 2016	13F
STATE STREET CORP	13F	Company	2.6%	1,261,752	$103,374,000	—	31 Dec 2016	13F
WASATCH ADVISORS LP	13F	Company	2.6%	1,255,637	$102,874,000	—	31 Dec 2016	13F
Invesco Ltd.	13F	Company	2.5%	1,186,111	$97,178,000	—	31 Dec 2016	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	2.3%	1,114,335	$91,297,000	—	31 Dec 2016	13F
EARNEST PARTNERS LLC	13F	Company	2.1%	986,849	$80,853,000	—	31 Dec 2016	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	1.8%	872,898	$71,516,000	—	31 Dec 2016	13F
Clearbridge Investments, LLC	13F	Company	1.7%	808,157	$66,212,000	—	31 Dec 2016	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	1.5%	724,094	$59,325,000	—	31 Dec 2016	13F
CONGRESS ASSET MANAGEMENT CO	13F	Company	1.3%	645,076	$52,851,000	—	31 Dec 2016	13F
Bank of New York Mellon Corp	13F	Company	1.3%	637,781	$52,253,000	—	31 Dec 2016	13F
NORTHERN TRUST CORP	13F	Company	1.3%	631,485	$51,736,000	—	31 Dec 2016	13F
ZEVENBERGEN CAPITAL INVESTMENTS LLC	13F	Company	1.3%	612,210	$50,158,000	—	31 Dec 2016	13F
FRONTIER CAPITAL MANAGEMENT CO LLC	13F	Company	1.3%	609,697	$49,952,000	—	31 Dec 2016	13F
JPMORGAN CHASE & CO	13F	Company	1.1%	542,577	$44,455,000	—	31 Dec 2016	13F
OppenheimerFunds, Inc.	13F	Company	1.1%	505,375	$41,405,000	—	31 Dec 2016	13F
LORD, ABBETT & CO. LLC	13F	Company	1%	498,306	$40,826,000	—	31 Dec 2016	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	0.98%	467,944	$38,339,000	—	31 Dec 2016	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	0.97%	466,174	$38,194,000	—	31 Dec 2016	13F
COLUMBIA WANGER ASSET MANAGEMENT LLC	13F	Company	0.94%	450,494	$36,909,000	—	31 Dec 2016	13F
WADDELL & REED FINANCIAL INC	13F	Company	0.88%	423,200	$34,672,000	—	31 Dec 2016	13F
Baird Financial Group, Inc.	13F	Company	0.88%	422,435	$34,610,000	—	31 Dec 2016	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.85%	407,431	$33,381,000	—	31 Dec 2016	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.77%	371,255	$30,417,000	—	31 Dec 2016	13F
Ardevora Asset Management LLP	13F	Company	0.76%	363,100	$29,749,000	—	31 Dec 2016	13F
WESTFIELD CAPITAL MANAGEMENT CO LP	13F	Company	0.74%	355,277	$29,108,000	—	31 Dec 2016	13F
LOOMIS SAYLES & CO L P	13F	Company	0.7%	334,833	$27,433,000	—	31 Dec 2016	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.68%	324,951	$26,623,000	—	31 Dec 2016	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.68%	323,461	$26,502,000	—	31 Dec 2016	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	0.67%	322,063	$26,387,000	—	31 Dec 2016	13F
THRIVENT FINANCIAL FOR LUTHERANS	13F	Company	0.67%	321,849	$26,369,000	—	31 Dec 2016	13F
Carlson Capital, L.P.	13F	Company	0.64%	306,041	$25,074,000	—	31 Dec 2016	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.61%	291,595	$23,890,000	—	31 Dec 2016	13F
Neuberger Berman Group LLC	13F	Company	0.56%	267,508	$21,917,000	—	31 Dec 2016	13F
PICTET ASSET MANAGEMENT LTD	13F	Company	0.54%	260,853	$21,372,000	—	31 Dec 2016	13F
NORGES BANK	13F	Company	0.54%	260,371	$21,332,000	—	31 Dec 2016	13F
BlackRock Investment Management, LLC	13F	Company	0.53%	252,445	$20,683,000	—	31 Dec 2016	13F
Whale Rock Capital Management LLC	13F	Company	0.52%	247,998	$20,318,000	—	31 Dec 2016	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.51%	244,364	$20,021,000	—	31 Dec 2016	13F
FRANKLIN RESOURCES INC	13F	Company	0.48%	229,704	$18,820,000	—	31 Dec 2016	13F
MORGAN STANLEY	13F	Company	0.48%	229,597	$18,810,000	—	31 Dec 2016	13F
BLACKROCK ADVISORS LLC	13F	Company	0.47%	225,845	$18,503,000	—	31 Dec 2016	13F
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO	13F	Company	0.46%	219,864	$18,013,000	—	31 Dec 2016	13F
Nationwide Fund Advisors	13F	Company	0.45%	214,086	$17,540,000	—	31 Dec 2016	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.41%	195,608	$16,025,000	—	31 Dec 2016	13F
Summit Creek Advisors LLC	13F	Company	0.4%	192,954	$15,809,000	—	31 Dec 2016	13F
JENNISON ASSOCIATES LLC	13F	Company	0.4%	189,609	$15,535,000	—	31 Dec 2016	13F

Institutional Holders of MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) as of Q1 2017

As of 31 Mar 2017, MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) was held by 286 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 38,307,935 shares. The largest 10 holders included BlackRock Inc., FMR LLC, VANGUARD GROUP INC, WELLS FARGO & COMPANY/MN, STATE STREET CORP, Invesco Ltd., EARNEST PARTNERS LLC, WASATCH ADVISORS INC, Clearbridge Investments, LLC, and VICTORY CAPITAL MANAGEMENT INC. This page lists 286 institutional shareholders reporting positions in this security for the Q1 2017 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2017 vs Q4 2016 Across Filers

Q4 2016 holders

263

Q1 2017 holders

286

Holder diff

Investor	Q4 2016 Shares	Q1 2017 Shares	Share Diff	Share Chg %	Q4 2016 Value $	Q1 2017 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.