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 Q4 2020?

480 institutional investors reported MASI - MASIMO CORP - Common Stock, par value $0.001 per share for Q4 2020. Use the holders table for investor-level position and value details.

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

CUSIP: 574795100

Q4 2020 13F Holders as of 31 Dec 2020

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 46,134,675
Total 13F value: $12,367,769,029
Share change: +431,416
Put/Call ratio: 40%
SEC-reported price per share: $268.38
Number of holders: 480
Value change: +$118,456,546
Number of buys: 240
Number of sells: 186
Shares outstanding: 52,065,574

Security key

574795100

Report period

Q4 2020

Institutions

480

Top holders

MASI full security history Ownership snapshot Full 13F holder table MASIMO CORP SEC filings MASIMO CORP company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders 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. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BlackRock Finance, Inc.

Disclosed value leader

BlackRock Finance, Inc.

Comparable rows

15/15

Latest evidence

30 Sep 2020

13F Lead comparable stake: 15% Showing 1-6 of 15 holder rows.

Quick read

BlackRock Finance, Inc. leads the comparable SEC ownership view at 15%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock Finance, Inc.'s linked filing trail.

Comparable ownership Top 5

BlackRock Finance, Inc. 15%

VANGUARD GROUP INC 8.6%

FMR LLC 8.5%

STATE STREET CORP 3.2%

Invesco Ltd. 2.7%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock Finance, Inc.	13F Company 13F	15%	$1,864,456,000 7,898,232 shares	—	30 Sep 2020
VANGUARD GROUP INC	13F Company 13F	8.6%	$1,062,022,000 4,498,951 shares	—	30 Sep 2020
FMR LLC	13F Company 13F	8.5%	$1,049,604,000 4,446,346 shares	—	30 Sep 2020
STATE STREET CORP	13F Company 13F	3.2%	$388,339,000 1,645,085 shares	—	30 Sep 2020
Invesco Ltd.	13F Company 13F	2.7%	$331,542,000 1,404,481 shares	—	30 Sep 2020
Ownership Capital B.V.	13F Company 13F	2.6%	$319,231,000 1,352,329 shares	—	30 Sep 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2020

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

480

46,134,675

Rows available

480

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2020 vs Q3 2020 Across Filers

Q3 2020 holders

449

Q4 2020 holders

480

Holder diff

Investor	Q3 2020 Shares	Q4 2020 Shares	Share Diff	Share Chg %	Q3 2020 value	Q4 2020 value	Value change	Value Chg %