MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
BlackRock, Inc.8,855,619$1,151,762
FMR LLC7,864,164$1,022,813
Politan Capital Management LP4,589,648$596,930
VANGUARD GROUP INC4,348,786$565,603
MASSACHUSETTS FINANCIAL SERVICES CO /MA/2,663,875$346,464
NAYA CAPITAL MANAGEMENT UK LTD1,560,697$202,984
WESTFIELD CAPITAL MANAGEMENT CO LP1,522,049$197,958
STATE STREET CORP1,415,196$184,060
Alyeska Investment Group, L.P.1,259,307$163,785
AQR CAPITAL MANAGEMENT LLC1,091,326$141,938
GEODE CAPITAL MANAGEMENT, LLC953,976$124,096
MORGAN STANLEY920,735$119,751
RTW INVESTMENTS, LP683,294$88,869
Capital Research Global Investors637,894$82,964
GOLDMAN SACHS GROUP INC636,698$82,809
Liontrust Investment Partners LLP627,796$81,651
T. Rowe Price Investment Management, Inc.600,293$78
UBS Group AG599,274$77,942
Squarepoint Ops LLC583,747$75,922
VIKING GLOBAL INVESTORS LP514,340$66,895
SCHRODER INVESTMENT MANAGEMENT GROUP475,504$62,324
AMERIPRISE FINANCIAL INC468,407$60,921
NORTHERN TRUST CORP380,464$49,483
NORGES BANK377,421$49,087
BAMCO INC /NY/373,899$48,629
CHARLES SCHWAB INVESTMENT MANAGEMENT INC361,896$47,068
Gotham Asset Management, LLC342,194$44,506
Corient Private Wealth LLC341,730$44,445
Invesco Ltd.319,308$41,529
Bank of New York Mellon Corp308,485$40,122
Qube Research & Technologies Ltd293,536$38,177
BANK OF AMERICA CORP /DE/284,702$37,028
Schonfeld Strategic Advisors LLC265,036$34,471
BNP Paribas Investment Partners S.A.232,565$30
Nuveen, LLC224,068$29,142
MARSHALL WACE, LLP219,312$28,524
PRICE T ROWE ASSOCIATES INC /MD/213,594$28
Parkman Healthcare Partners LLC200,000$26,012
Erste Asset Management GmbH200,000$26,012
MILLENNIUM MANAGEMENT LLC187,965$24,447
RAYMOND JAMES FINANCIAL INC186,510$24,258
AMERICAN CENTURY COMPANIES INC178,758$23,249
DIMENSIONAL FUND ADVISORS LP173,950$22,625
Man Group plc147,416$19,173
Grantham, Mayo, Van Otterloo & Co. LLC143,825$18,706
DF DENT & CO INC142,626$18,550
RHUMBLINE ADVISERS124,556$16,200
CITIGROUP INC121,231$15,767
GW&K Investment Management, LLC119,362$16
UBS ASSET MANAGEMENT AMERICAS INC118,964$15,472
JPMORGAN CHASE & CO117,798$15,321
TD Asset Management Inc114,514$14,894
JANE STREET GROUP, LLC102,881$13,381
PRINCIPAL FINANCIAL GROUP INC97,858$12,727
Bellevue Group AG97,285$12,653
HRT FINANCIAL LP92,776$12
Legal & General Group Plc92,436$12,022
Swiss National Bank91,100$11,848
Rockefeller Capital Management L.P.86,411$11,239
Toroso Investments, LLC85,294$11,093
Engineers Gate Manager LP83,458$10,855
GAMCO INVESTORS, INC. ET AL83,000$10,795
Alpha Wave Global, LP75,552$9,826
D. E. Shaw & Co., Inc.66,016$8,586
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM63,359$8,240
RENAISSANCE TECHNOLOGIES LLC59,900$7,791
Swedbank AB59,500$7,739
BARCLAYS PLC58,358$7,590
Quantbot Technologies LP56,925$7,404
Retirement Systems of Alabama54,795$7,127
ALLIANCEBERNSTEIN L.P.54,223$7,052
Assenagon Asset Management S.A.53,525$6,961
Verition Fund Management LLC53,020$6,896
BLI - Banque de Luxembourg Investments48,839$6,400
CAPITAL FUND MANAGEMENT S.A.47,586$6,189
Sofinnova Investments, Inc.46,201$6,009
Amundi43,860$5,704
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM43,823$5,700
CITADEL ADVISORS LLC43,052$5,599
NS Partners Ltd42,348$5,508
Walleye Capital LLC42,049$5,469
NEW YORK STATE TEACHERS RETIREMENT SYSTEM40,048$5
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM39,749$5,170
VOLORIDGE INVESTMENT MANAGEMENT, LLC39,557$5,145
WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD39,437$5,129
CANADA PENSION PLAN INVESTMENT BOARD38,500$5,007
STRS OHIO36,915$4,801
MANUFACTURERS LIFE INSURANCE COMPANY, THE33,184$4,316
GABELLI FUNDS LLC32,700$4,253
Baird Financial Group, Inc.30,679$3,990
NORDEA INVESTMENT MANAGEMENT AB28,319$3,690
Campbell & CO Investment Adviser LLC27,783$3,613
GREAT WEST LIFE ASSURANCE CO /CAN/26,610$3
LOGAN CAPITAL MANAGEMENT INC26,505$3,447
GLUSKIN SHEFF & ASSOC INC25,805$3,356
INTECH INVESTMENT MANAGEMENT LLC24,765$3,221
MetLife Investment Management, LLC24,472$3,183
Westmount Partners, LLC24,232$3,152
NEW YORK STATE COMMON RETIREMENT FUND24,160$3,142
Cerity Partners LLC23,774$3,092
287 other institutions1,389,017$155,002
Total (387 institutions)53,589,951$6,772,624