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 Q2 2015?

178 institutional investors reported MPWR - MONOLITHIC POWER SYSTEMS INC - Common Stock for Q2 2015. Use the holders table for investor-level position and value details.

MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR)

CUSIP: 609839105

Q2 2015 13F Holders as of 30 Jun 2015

Type / Class: Equity / Common Stock
Shares outstanding: 47,915,757
Total 13F shares: 37,204,401
Share change: +649,063
Total reported value: $1,886,652,193
Put/Call ratio: 0%
Price per share: $50.71
Number of holders: 178
Value change: +$30,569,520
Number of buys: 93
Number of sells: 90

Quarterly Holders Quick Answers

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

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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.
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Explore More Reporting Periods

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

Newer quarter: Q3 2015
Previous quarter: Q1 2015

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	9.4%	4,514,277	$237,677,000	—	31 Mar 2015	13F
VANGUARD GROUP INC	13F	Company	5.3%	2,518,713	$132,610,000	—	31 Mar 2015	13F
BlackRock Fund Advisors	13F	Company	4.6%	2,180,439	$114,800,000	—	31 Mar 2015	13F
EARNEST PARTNERS LLC	13F	Company	3.5%	1,698,519	$89,427,000	—	31 Mar 2015	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	3.3%	1,597,517	$84,109,000	—	31 Mar 2015	13F
OppenheimerFunds, Inc.	13F	Company	2.4%	1,154,360	$60,777,000	—	31 Mar 2015	13F
Invesco Ltd.	13F	Company	2.4%	1,136,976	$59,861,000	—	31 Mar 2015	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	2.1%	1,013,499	$53,361,000	—	31 Mar 2015	13F
FRONTIER CAPITAL MANAGEMENT CO LLC	13F	Company	2%	943,173	$49,658,000	—	31 Mar 2015	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	1.9%	927,310	$48,823,000	—	31 Mar 2015	13F
Clearbridge Investments, LLC	13F	Company	1.8%	861,027	$45,333,000	—	31 Mar 2015	13F
STATE STREET CORP	13F	Company	1.7%	796,696	$41,944,000	—	31 Mar 2015	13F
JPMORGAN CHASE & CO	13F	Company	1.6%	784,604	$41,309,000	—	31 Mar 2015	13F
COLUMBIA WANGER ASSET MANAGEMENT LLC	13F	Company	1.4%	662,000	$34,854,000	—	31 Mar 2015	13F
CITADEL ADVISORS LLC	13F	Company	1.3%	628,497	$33,091,000	—	31 Mar 2015	13F
NORTHERN TRUST CORP	13F	Company	1.2%	566,086	$29,804,000	—	31 Mar 2015	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.2%	564,372	$29,714,000	—	31 Mar 2015	13F
Bank of New York Mellon Corp	13F	Company	1.2%	555,410	$29,241,000	—	31 Mar 2015	13F
WESTFIELD CAPITAL MANAGEMENT CO LP	13F	Company	1.1%	528,925	$27,848,000	—	31 Mar 2015	13F
RS INVESTMENT MANAGEMENT CO LLC	13F	Company	1%	491,560	$25,881,000	—	31 Mar 2015	13F
JENNISON ASSOCIATES LLC	13F	Company	1%	485,281	$25,550,000	—	31 Mar 2015	13F
LOOMIS SAYLES & CO L P	13F	Company	1%	478,206	$25,177,000	—	31 Mar 2015	13F
Carlson Capital, L.P.	13F	Company	0.99%	476,565	$25,091,000	—	31 Mar 2015	13F
LORD, ABBETT & CO. LLC	13F	Company	0.98%	471,363	$24,817,000	—	31 Mar 2015	13F
Neuberger Berman Group LLC	13F	Company	0.96%	461,027	$24,273,000	—	31 Mar 2015	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.94%	449,986	$23,692,000	—	31 Mar 2015	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.93%	445,152	$23,437,000	—	31 Mar 2015	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.86%	411,989	$21,691,000	—	31 Mar 2015	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.85%	406,974	$21,427,000	—	31 Mar 2015	13F
Century Capital Management, LLC	13F	Company	0.7%	335,271	$17,652,000	—	31 Mar 2015	13F
NORGES BANK	13F	Company	0.64%	307,362	$16,183,000	—	31 Mar 2015	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	0.6%	289,384	$15,236,068	—	31 Mar 2015	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.58%	276,392	$14,553,000	—	31 Mar 2015	13F
Granahan Investment Management, LLC	13F	Company	0.57%	272,236	$14,333,000	—	31 Mar 2015	13F
MANAGED ACCOUNT ADVISORS LLC	13F	Company	0.56%	270,255	$14,229,000	—	31 Mar 2015	13F
DEUTSCHE BANK AG\	13F	Company	0.56%	268,251	$14,120,000	—	31 Mar 2015	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	0.54%	258,985	$13,635,000	—	31 Mar 2015	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.48%	230,865	$12,155,000	—	31 Mar 2015	13F
TEACHERS ADVISORS, LLC	13F	Company	0.47%	224,193	$11,804,000	—	31 Mar 2015	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.45%	216,791	$11,414,000	—	31 Mar 2015	13F
Nichols Asset Management LLC	13F	Company	0.44%	209,285	$11,019,000	—	31 Mar 2015	13F
D. E. Shaw & Co., Inc.	13F	Company	0.43%	204,190	$10,751,000	—	31 Mar 2015	13F
Nationwide Fund Advisors	13F	Company	0.43%	203,934	$10,737,000	—	31 Mar 2015	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.38%	181,981	$9,584,000	—	31 Mar 2015	13F
ARBOR CAPITAL MANAGEMENT LLC	13F	Company	0.36%	174,030	$9,163,000	—	31 Mar 2015	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.33%	156,057	$8,216,000	—	31 Mar 2015	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	0.32%	153,204	$8,066,000	—	31 Mar 2015	13F
Creative Planning	13F	Company	0.32%	152,631	$8,036,000	—	31 Mar 2015	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.33%	158,921	$7,585,000	—	31 Mar 2015	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.28%	135,201	$7,118,000	—	31 Mar 2015	13F

Institutional Holders of MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) as of Q2 2015

As of 30 Jun 2015, MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) was held by 178 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 37,204,401 shares. The largest 10 holders included FMR LLC, VANGUARD GROUP INC, BlackRock Fund Advisors, ADAGE CAPITAL PARTNERS GP LLC, EARNEST PARTNERS LLC, RS INVESTMENT MANAGEMENT CO LLC, Invesco Ltd., OPPENHEIMER FUNDS INC, FRONTIER CAPITAL MANAGEMENT CO LLC, and ALLIANCEBERNSTEIN L.P.. This page lists 178 institutional shareholders reporting positions in this security for the Q2 2015 filing period.

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

Compare Q2 2015 vs Q1 2015 Across Filers

Q1 2015 holders

177

Q2 2015 holders

178

Holder diff

Investor	Q1 2015 Shares	Q2 2015 Shares	Share Diff	Share Chg %	Q1 2015 Value $	Q2 2015 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.