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 2016?

197 institutional investors reported MPWR - MONOLITHIC POWER SYSTEMS INC - Common Stock for Q1 2016. Use the holders table for investor-level position and value details.

MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR)

CUSIP: 609839105

Q1 2016 13F Holders as of 31 Mar 2016

Type / Class: Equity / Common Stock
Shares outstanding: 49,129,186
Total 13F shares: 39,192,404
Share change: +1,569,168
Total reported value: $2,490,943,966
Put/Call ratio: 260%
Price per share: $63.64
Number of holders: 197
Value change: +$99,987,403
Number of buys: 96
Number of sells: 97

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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Explore More Reporting Periods

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

Newer quarter: Q2 2016
Previous quarter: Q4 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	8.4%	4,139,216	$263,710,000	—	31 Dec 2015	13F
VANGUARD GROUP INC	13F	Company	5.6%	2,731,287	$174,011,000	—	31 Dec 2015	13F
BlackRock Fund Advisors	13F	Company	4.8%	2,363,216	$150,560,000	—	31 Dec 2015	13F
RS INVESTMENT MANAGEMENT CO LLC	13F	Company	4.3%	2,114,648	$134,724,000	—	31 Dec 2015	13F
WASATCH ADVISORS LP	13F	Company	2.6%	1,287,818	$82,047,000	—	31 Dec 2015	13F
Invesco Ltd.	13F	Company	2.6%	1,282,775	$81,725,000	—	31 Dec 2015	13F
EARNEST PARTNERS LLC	13F	Company	2.5%	1,211,611	$77,192,000	—	31 Dec 2015	13F
OppenheimerFunds, Inc.	13F	Company	2%	987,199	$62,894,000	—	31 Dec 2015	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	1.9%	926,460	$59,025,000	—	31 Dec 2015	13F
STATE STREET CORP	13F	Company	1.7%	836,270	$53,276,000	—	31 Dec 2015	13F
Clearbridge Investments, LLC	13F	Company	1.7%	817,651	$52,093,000	—	31 Dec 2015	13F
FRONTIER CAPITAL MANAGEMENT CO LLC	13F	Company	1.5%	725,274	$46,207,000	—	31 Dec 2015	13F
COLUMBIA WANGER ASSET MANAGEMENT LLC	13F	Company	1.4%	669,319	$42,642,000	—	31 Dec 2015	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	1.3%	658,907	$41,979,000	—	31 Dec 2015	13F
Bank of New York Mellon Corp	13F	Company	1.3%	630,000	$40,137,000	—	31 Dec 2015	13F
Carlson Capital, L.P.	13F	Company	1.2%	590,848	$37,643,000	—	31 Dec 2015	13F
NORTHERN TRUST CORP	13F	Company	1.2%	589,883	$37,581,000	—	31 Dec 2015	13F
JPMORGAN CHASE & CO	13F	Company	1.2%	586,134	$37,343,000	—	31 Dec 2015	13F
JENNISON ASSOCIATES LLC	13F	Company	1%	493,703	$31,454,000	—	31 Dec 2015	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.99%	485,231	$30,914,000	—	31 Dec 2015	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.98%	482,724	$30,755,000	—	31 Dec 2015	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	0.91%	447,876	$28,534,000	—	31 Dec 2015	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.9%	441,086	$28,102,000	—	31 Dec 2015	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.85%	417,201	$26,579,000	—	31 Dec 2015	13F
KORNITZER CAPITAL MANAGEMENT INC /KS	13F	Company	0.83%	405,535	$25,837,000	—	31 Dec 2015	13F
WESTFIELD CAPITAL MANAGEMENT CO LP	13F	Company	0.82%	403,447	$25,704,000	—	31 Dec 2015	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	0.81%	395,895	$25,222,000	—	31 Dec 2015	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	0.79%	390,468	$24,877,000	—	31 Dec 2015	13F
LOOMIS SAYLES & CO L P	13F	Company	0.77%	380,635	$24,250,000	—	31 Dec 2015	13F
Neuberger Berman Group LLC	13F	Company	0.76%	372,297	$23,719,000	—	31 Dec 2015	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.76%	372,098	$23,706,000	—	31 Dec 2015	13F
LORD, ABBETT & CO. LLC	13F	Company	0.67%	328,423	$20,924,000	—	31 Dec 2015	13F
NORGES BANK	13F	Company	0.63%	307,300	$19,578,000	—	31 Dec 2015	13F
CHARTWELL INVESTMENT PARTNERS, LLC	13F	Company	0.61%	299,581	$19,086,000	—	31 Dec 2015	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.58%	287,077	$18,289,000	—	31 Dec 2015	13F
FIDUCIARY MANAGEMENT ASSOCIATES LLC	13F	Company	0.56%	273,201	$17,412,000	—	31 Dec 2015	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.55%	268,503	$17,107,000	—	31 Dec 2015	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.5%	244,677	$15,588,000	—	31 Dec 2015	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.48%	238,211	$15,176,000	—	31 Dec 2015	13F
TEACHERS ADVISORS, LLC	13F	Company	0.46%	226,440	$14,426,000	—	31 Dec 2015	13F
THRIVENT FINANCIAL FOR LUTHERANS	13F	Company	0.45%	222,359	$14,167,000	—	31 Dec 2015	13F
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO	13F	Company	0.45%	221,729	$14,126,000	—	31 Dec 2015	13F
Robeco Schweiz AG	13F	Company	0.41%	203,500	$13,183,000	—	31 Dec 2015	13F
ZEVENBERGEN CAPITAL INVESTMENTS LLC	13F	Company	0.42%	205,695	$13,105,000	—	31 Dec 2015	13F
Nichols Asset Management LLC	13F	Company	0.39%	193,280	$12,314,000	—	31 Dec 2015	13F
NEXT CENTURY GROWTH INVESTORS LLC	13F	Company	0.39%	189,185	$12,052,000	—	31 Dec 2015	13F
WADDELL & REED FINANCIAL INC	13F	Company	0.38%	185,200	$11,799,000	—	31 Dec 2015	13F
Whale Rock Capital Management LLC	13F	Company	0.37%	183,724	$11,705,000	—	31 Dec 2015	13F
Granahan Investment Management, LLC	13F	Company	0.36%	177,886	$11,333,000	—	31 Dec 2015	13F
Nationwide Fund Advisors	13F	Company	0.36%	175,688	$11,193,000	—	31 Dec 2015	13F

Institutional Holders of MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) as of Q1 2016

As of 31 Mar 2016, MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) was held by 197 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 39,192,404 shares. The largest 10 holders included FMR LLC, VANGUARD GROUP INC, BlackRock Fund Advisors, RS INVESTMENT MANAGEMENT CO LLC, ADAGE CAPITAL PARTNERS GP, L.L.C., WASATCH ADVISORS INC, Invesco Ltd., EARNEST PARTNERS LLC, BlackRock Institutional Trust Company, N.A., and OppenheimerFunds, Inc.. This page lists 197 institutional shareholders reporting positions in this security for the Q1 2016 filing period.

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

Compare Q1 2016 vs Q4 2015 Across Filers

Q4 2015 holders

191

Q1 2016 holders

197

Holder diff

Investor	Q4 2015 Shares	Q1 2016 Shares	Share Diff	Share Chg %	Q4 2015 Value $	Q1 2016 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.