What does CUSIP 574795100 represent in this 13F holders report?

CUSIP 574795100 is the security identifier for MASI - MASIMO CORP - Common Stock, par value $0.001 per share used to aggregate holder disclosures.

How many institutions held MASI - MASIMO CORP - Common Stock, par value $0.001 per share in Q1 2014?

168 institutional investors reported MASI - MASIMO CORP - Common Stock, par value $0.001 per share for Q1 2014. Use the holders table for investor-level position and value details.

MASIMO CORP - Common Stock, par value $0.001 per share (MASI)

CUSIP: 574795100

Q1 2014 13F Holders as of 31 Mar 2014

Type / Class: Equity / Common Stock, par value $0.001 per share
Shares outstanding: 52,065,574
Total 13F shares: 48,536,107
Share change: +1,121,168
Total reported value: $1,325,418,870
Put/Call ratio: 313%
Price per share: $27.31
Number of holders: 168
Value change: +$23,725,182
Number of buys: 91
Number of sells: 68

Quarterly Holders Quick Answers

What is CUSIP 574795100?
CUSIP 574795100 identifies MASI - MASIMO CORP - Common Stock, par value $0.001 per share 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 2014
Previous quarter: Q4 2013

Recent filing periods for CUSIP 574795100:

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

Top shareholders of MASI - MASIMO CORP - Common Stock, par value $0.001 per share (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
JANUS HENDERSON INVESTORS US LLC	13F	Company	10%	5,454,141	$159,425,000	—	31 Dec 2013	13F
FMR LLC	13F	Company	7.3%	3,823,000	$111,747,000	—	31 Dec 2013	13F
VANGUARD GROUP INC	13F	Company	5.9%	3,095,135	$90,470,000	—	31 Dec 2013	13F
BlackRock Fund Advisors	13F	Company	4.6%	2,403,388	$70,251,000	—	31 Dec 2013	13F
Bares Capital Management, Inc.	13F	Company	4.1%	2,153,144	$62,936,000	—	31 Dec 2013	13F
Champlain Investment Partners, LLC	13F	Company	4.1%	2,119,270	$61,946,000	—	31 Dec 2013	13F
STATE STREET CORP	13F	Company	3.1%	1,589,070	$46,446,000	—	31 Dec 2013	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	2.9%	1,489,904	$43,550,000	—	31 Dec 2013	13F
Camber Capital Management LP	13F	Company	2.7%	1,425,000	$41,653,000	—	31 Dec 2013	13F
WESTFIELD CAPITAL MANAGEMENT CO LP	13F	Company	2.7%	1,410,513	$41,229,000	—	31 Dec 2013	13F
BAMCO INC /NY/	13F	Company	2.6%	1,370,014	$40,046,000	—	31 Dec 2013	13F
Invesco Ltd.	13F	Company	2.5%	1,275,645	$37,287,000	—	31 Dec 2013	13F
SCHRODER INVESTMENT MANAGEMENT GROUP	13F	Company	1.9%	990,605	$28,955,384	—	31 Dec 2013	13F
KENNEDY CAPITAL MANAGEMENT LLC	13F	Company	1.9%	979,935	$28,643,000	—	31 Dec 2013	13F
HERMES INVESTMENT MANAGEMENT LTD	13F	Company	1.9%	976,911	$28,555,000	—	31 Dec 2013	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	1.8%	960,244	$28,068,000	—	31 Dec 2013	13F
NORTHERN TRUST CORP	13F	Company	1.8%	923,634	$26,998,000	—	31 Dec 2013	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.4%	709,039	$20,725,000	—	31 Dec 2013	13F
FIDUCIARY MANAGEMENT ASSOCIATES LLC	13F	Company	1.3%	666,675	$19,487,000	—	31 Dec 2013	13F
Bank of New York Mellon Corp	13F	Company	1.2%	608,512	$17,787,000	—	31 Dec 2013	13F
ROYAL BANK OF CANADA	13F	Company	1.1%	585,552	$17,115,000	—	31 Dec 2013	13F
FULLER & THALER ASSET MANAGEMENT, INC.	13F	Company	1.1%	581,300	$16,991,000	—	31 Dec 2013	13F
WEATHERBIE CAPITAL, LLC	13F	Company	0.92%	478,624	$13,990,000	—	31 Dec 2013	13F
NORGES BANK	13F	Company	0.89%	464,851	$13,587,000	—	31 Dec 2013	13F
ArrowMark Colorado Holdings LLC	13F	Company	0.88%	460,310	$13,455,000	—	31 Dec 2013	13F
SENTINEL ASSET MANAGEMENT, INC.	13F	Company	0.86%	448,720	$13,116,000	—	31 Dec 2013	13F
TIVERTON ASSET MANAGEMENT LLC	13F	Company	0.69%	360,200	$10,531,000	—	31 Dec 2013	13F
ROCKEFELLER FINANCIAL SERVICES INC	13F	Company	0.64%	335,605	$9,810,000	—	31 Dec 2013	13F
AMUNDI ASSET MANAGEMENT US, INC.	13F	Company	0.62%	324,995	$9,500,000	—	31 Dec 2013	13F
TEACHERS ADVISORS, LLC	13F	Company	0.57%	296,108	$8,655,000	—	31 Dec 2013	13F
FEDERATED HERMES, INC.	13F	Company	0.56%	292,035	$8,537,000	—	31 Dec 2013	13F
PARADIGM CAPITAL MANAGEMENT INC/NY	13F	Company	0.55%	286,850	$8,385,000	—	31 Dec 2013	13F
BNP Paribas Asset Management Holding S.A.	13F	Company	0.55%	286,578	$8,377,000	—	31 Dec 2013	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.52%	269,732	$7,884,000	—	31 Dec 2013	13F
MANAGED ACCOUNT ADVISORS LLC	13F	Company	0.52%	269,418	$7,875,000	—	31 Dec 2013	13F
BlackRock Investment Management, LLC	13F	Company	0.5%	260,360	$7,610,000	—	31 Dec 2013	13F
DEUTSCHE BANK AG\	13F	Company	0.49%	257,517	$7,525,000	—	31 Dec 2013	13F
Gamma As Sector	13F	Individual	0.47%	243,150	$7,107,000	—	31 Dec 2013	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	0.45%	233,430	$6,823,000	—	31 Dec 2013	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.41%	215,363	$6,295,000	—	31 Dec 2013	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.37%	194,510	$5,686,000	—	31 Dec 2013	13F
State of Tennessee, Department of Treasury	13F	Company	0.36%	190,000	$5,554,000	—	31 Dec 2013	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.31%	162,451	$4,748,000	—	31 Dec 2013	13F
Absolute Return Capital, LLC	13F	Company	0.33%	173,327	$4,617,000	—	31 Dec 2013	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.3%	154,650	$4,520,000	—	31 Dec 2013	13F
Waterstone Capital Management, L.P.	13F	Company	0.29%	150,000	$4,385,000	—	31 Dec 2013	13F
Wilmington Savings Fund Society, FSB	13F	Company	0.29%	149,513	$4,370,000	—	31 Dec 2013	13F
UBS AG	13F	Company	0.28%	147,635	$4,315,000	—	31 Dec 2013	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.28%	147,281	$4,306,000	—	31 Dec 2013	13F
FORESTERS INVESTMENT MANAGEMENT COMPANY, INC.	13F	Company	0.28%	144,000	$4,209,000	—	31 Dec 2013	13F

Institutional Holders of MASIMO CORP - Common Stock, par value $0.001 per share (MASI) as of Q1 2014

As of 31 Mar 2014, MASIMO CORP - Common Stock, par value $0.001 per share (MASI) was held by 168 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 48,536,107 shares. The largest 10 holders included FMR LLC, JANUS CAPITAL MANAGEMENT LLC, VANGUARD GROUP INC, BlackRock Fund Advisors, Champlain Investment Partners, LLC, State Street Corp, BlackRock Institutional Trust Company, N.A., WESTFIELD CAPITAL MANAGEMENT CO LP, BAMCO INC /NY/, and Invesco Ltd.. This page lists 168 institutional shareholders reporting positions in this security for the Q1 2014 filing period.

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

Compare Q1 2014 vs Q4 2013 Across Filers

Q4 2013 holders

163

Q1 2014 holders

168

Holder diff

Investor	Q4 2013 Shares	Q1 2014 Shares	Share Diff	Share Chg %	Q4 2013 Value $	Q1 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.