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 Q4 2014?

169 institutional investors reported MPWR - MONOLITHIC POWER SYSTEMS INC - Common Stock for Q4 2014. Use the holders table for investor-level position and value details.

MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR)

CUSIP: 609839105

Q4 2014 13F Holders as of 31 Dec 2014

Type / Class: Equity / Common Stock
Shares outstanding: 49,129,186
Total 13F shares: 36,864,580
Share change: -334,857
Total reported value: $1,833,337,638
Put/Call ratio: 41%
Price per share: $49.74
Number of holders: 169
Value change: -$12,959,562
Number of buys: 68
Number of sells: 102

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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Newer quarter: Q1 2015
Previous quarter: Q3 2014

Recent filing periods for CUSIP 609839105:

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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	8.3%	4,069,166	$179,246,000	—	30 Sep 2014	13F
VANGUARD GROUP INC	13F	Company	5%	2,447,000	$107,790,000	—	30 Sep 2014	13F
EARNEST PARTNERS LLC	13F	Company	4%	1,986,392	$87,501,000	—	30 Sep 2014	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	3.9%	1,923,468	$84,729,000	—	30 Sep 2014	13F
BlackRock Fund Advisors	13F	Company	3.8%	1,864,938	$82,151,000	—	30 Sep 2014	13F
FRONTIER CAPITAL MANAGEMENT CO LLC	13F	Company	2.6%	1,296,988	$57,132,000	—	30 Sep 2014	13F
OppenheimerFunds, Inc.	13F	Company	2.5%	1,208,790	$53,247,000	—	30 Sep 2014	13F
COLUMBIA WANGER ASSET MANAGEMENT LLC	13F	Company	2.2%	1,096,000	$48,279,000	—	30 Sep 2014	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	2.2%	1,082,242	$47,673,000	—	30 Sep 2014	13F
CITADEL ADVISORS LLC	13F	Company	2%	970,155	$42,735,000	—	30 Sep 2014	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	1.9%	941,236	$41,461,000	—	30 Sep 2014	13F
Clearbridge Investments, LLC	13F	Company	1.8%	862,635	$37,999,000	—	30 Sep 2014	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.7%	831,188	$36,615,000	—	30 Sep 2014	13F
JPMORGAN CHASE & CO	13F	Company	1.6%	805,663	$35,489,000	—	30 Sep 2014	13F
STATE STREET CORP	13F	Company	1.6%	780,051	$34,358,000	—	30 Sep 2014	13F
MANAGED ACCOUNT ADVISORS LLC	13F	Company	1.5%	718,570	$31,653,000	—	30 Sep 2014	13F
LOOMIS SAYLES & CO L P	13F	Company	1.2%	612,897	$26,998,000	—	30 Sep 2014	13F
NORTHERN TRUST CORP	13F	Company	1.2%	589,400	$25,963,000	—	30 Sep 2014	13F
Century Capital Management, LLC	13F	Company	1.2%	572,287	$25,209,000	—	30 Sep 2014	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	1.2%	566,575	$24,958,000	—	30 Sep 2014	13F
Bank of New York Mellon Corp	13F	Company	1.1%	528,124	$23,263,000	—	30 Sep 2014	13F
Invesco Ltd.	13F	Company	1.1%	524,896	$23,122,000	—	30 Sep 2014	13F
Neuberger Berman Group LLC	13F	Company	0.99%	487,838	$21,489,000	—	30 Sep 2014	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	0.89%	438,993	$19,338,000	—	30 Sep 2014	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.84%	413,667	$18,222,000	—	30 Sep 2014	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.82%	402,986	$17,752,000	—	30 Sep 2014	13F
Cupps Capital Management, LLC	13F	Company	0.72%	353,545	$15,573,000	—	30 Sep 2014	13F
JENNISON ASSOCIATES LLC	13F	Company	0.71%	348,883	$15,368,000	—	30 Sep 2014	13F
Granahan Investment Management, LLC	13F	Company	0.67%	330,500	$14,559,000	—	30 Sep 2014	13F
TURNER INVESTMENTS LLC	13F	Company	0.67%	328,440	$14,468,000	—	30 Sep 2014	13F
NORGES BANK	13F	Company	0.66%	322,680	$14,214,000	—	30 Sep 2014	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.63%	311,652	$13,728,000	—	30 Sep 2014	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	0.53%	260,975	$11,496,000	—	30 Sep 2014	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.46%	224,973	$9,910,000	—	30 Sep 2014	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.46%	224,351	$9,882,000	—	30 Sep 2014	13F
D. E. Shaw & Co., Inc.	13F	Company	0.44%	214,491	$9,448,000	—	30 Sep 2014	13F
Nationwide Fund Advisors	13F	Company	0.42%	205,142	$9,037,000	—	30 Sep 2014	13F
Nichols Asset Management LLC	13F	Company	0.41%	201,574	$8,879,000	—	30 Sep 2014	13F
ARBOR CAPITAL MANAGEMENT LLC	13F	Company	0.41%	200,630	$8,838,000	—	30 Sep 2014	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.41%	199,098	$8,770,000	—	30 Sep 2014	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.4%	194,772	$8,579,000	—	30 Sep 2014	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.36%	174,988	$7,708,000	—	30 Sep 2014	13F
KINGDON CAPITAL MANAGEMENT, L.L.C.	13F	Company	0.33%	161,666	$7,121,000	—	30 Sep 2014	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.32%	158,575	$6,985,000	—	30 Sep 2014	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.32%	158,457	$6,980,000	—	30 Sep 2014	13F
SCHRODER INVESTMENT MANAGEMENT GROUP	13F	Company	0.32%	155,784	$6,862,286	—	30 Sep 2014	13F
Creative Planning	13F	Company	0.31%	153,556	$6,764,000	—	30 Sep 2014	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.3%	145,964	$6,430,000	—	30 Sep 2014	13F
G2 Investment Partners Management LLC	13F	Company	0.29%	143,700	$6,330,000	—	30 Sep 2014	13F
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC	13F	Company	0.29%	142,969	$6,298,000	—	30 Sep 2014	13F

Institutional Holders of MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) as of Q4 2014

As of 31 Dec 2014, MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) was held by 169 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 36,864,580 shares. The largest 10 holders included FMR LLC, VANGUARD GROUP INC, BlackRock Fund Advisors, ADAGE CAPITAL PARTNERS GP LLC, EARNEST PARTNERS LLC, OPPENHEIMER FUNDS INC, Invesco Ltd., ALLIANCEBERNSTEIN L.P., Citadel Advisors LLC, and FRONTIER CAPITAL MANAGEMENT CO LLC. This page lists 169 institutional shareholders reporting positions in this security for the Q4 2014 filing period.

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

Compare Q4 2014 vs Q3 2014 Across Filers

Q3 2014 holders

173

Q4 2014 holders

169

Holder diff

-4

Investor	Q3 2014 Shares	Q4 2014 Shares	Share Diff	Share Chg %	Q3 2014 Value $	Q4 2014 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.