MASIMO CORP - Common Stock, $0.0001 par value (MASI)

Historical Holders from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock, $0.0001 par value
Symbol
MASI on Nasdaq
Shares outstanding
57,447,928
Price per share
$130.06
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
56,174,327
Total reported value
$8,285,436,108
% of total 13F portfolios
0.01%
Share change
-1,370,499
Value change
-$247,825,073
Number of holders
350
Price from insider filings
$130.06
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of MASIMO CORP - Common Stock, $0.0001 par value (MASI) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
FMR LLC 15% $1,315,009,580 8,031,083 FMR LLC 31 Dec 2024
KIANI JOE E 11% -2.7% $940,885,036 -$30,552,146 6,376,720 -3.1% Joe Kiani 30 Sep 2025
BlackRock Portfolio Management LLC 10% $906,591,375 5,536,774 BlackRock Portfolio Management LLC 28 Feb 2025
BlackRock, Inc. 7.9% $692,807,191 4,231,142 BlackRock, Inc. 31 Jan 2025
As of 30 Sep 2025, MASIMO CORP - Common Stock, $0.0001 par value (MASI) has 350 institutional shareholders filing 13F forms. They hold 56,174,327 shares. of 57,447,928 outstanding shares (98%) .

Top 25 institutional shareholders own 83% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
BlackRock, Inc. 18% 10,361,091 -1.4% 0.03% $1,528,779,050
FMR LLC 14% 8,213,721 +0.4% 0.06% $1,211,934,519
VANGUARD GROUP INC 8.4% 4,810,011 +3.7% 0.01% $709,717,123
Politan Capital Management LP 8% 4,589,648 -2.7% 62% $677,202,562
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 4.6% 2,619,960 +6.1% 0.12% $386,575,098
T. Rowe Price Investment Management, Inc. 3.7% 2,126,763 -15% 0.19% $313,804,000
Capital Research Global Investors 3.2% 1,854,128 -0.08% 0.05% $273,576,586
STATE STREET CORP 2.6% 1,484,471 -0.13% 0.01% $219,033,696
WESTFIELD CAPITAL MANAGEMENT CO LP 2.5% 1,419,250 +20% 0.88% $209,410,274
Alyeska Investment Group, L.P. 2.4% 1,381,085 +22% 0.62% $203,779,092
VIKING GLOBAL INVESTORS LP 1.9% 1,073,433 +40% 0.41% $158,385,039
GEODE CAPITAL MANAGEMENT, LLC 1.6% 942,439 +5.1% 0.01% $139,080,035
GOLDMAN SACHS GROUP INC 1.3% 744,402 +58% 0.02% $109,836,515
MORGAN STANLEY 1.2% 690,601 -10% 0.01% $101,898,663
RTW INVESTMENTS, LP 1.2% 683,294 0% 1.2% $100,820,030
Liontrust Investment Partners LLP 1.2% 681,895 -3.7% 1.5% $100,613,607
Squarepoint Ops LLC 1.1% 620,932 +739% 0.2% $91,618,517
Durable Capital Partners LP 1.1% 620,619 -47% 0.68% $91,572,333
PRICE T ROWE ASSOCIATES INC /MD/ 0.9% 514,946 +27% 0.01% $75,981,000
AMERIPRISE FINANCIAL INC 0.8% 460,951 +17% 0.02% $68,013,321
BANK OF AMERICA CORP /DE/ 0.71% 405,061 +113% 0% $59,766,751
Sumitomo Mitsui Trust Group, Inc. 0.69% 397,248 -16% 0.03% $58,613,942
NORTHERN TRUST CORP 0.68% 392,142 +0.93% 0.01% $57,860,553
BAMCO INC /NY/ 0.68% 388,747 +1.1% 0.15% $57,359,620
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.63% 364,457 -1.7% 0.01% $53,775,630

Institutional Holders of MASIMO CORP - Common Stock, $0.0001 par value (MASI) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price Investors
2025 Q4 123,281 $16,135,643 +$9,024,472 $130.06 18
2025 Q3 56,174,327 $8,285,436,108 -$247,825,073 $147.55 350
2025 Q2 57,531,263 $9,678,040,277 +$566,298,917 $168.22 375
2025 Q1 54,245,883 $9,034,866,757 +$448,557,462 $166.60 389
2024 Q4 51,411,548 $8,501,447,911 +$221,294,182 $165.30 362
2024 Q3 50,430,653 $6,717,968,664 +$195,557,848 $133.33 357
2024 Q2 49,545,428 $6,238,873,009 -$289,595,358 $125.94 350
2024 Q1 51,603,603 $7,578,656,800 +$54,858,314 $146.85 330
2023 Q4 50,338,512 $5,900,007,837 +$429,947,280 $117.21 333
2023 Q3 47,611,421 $4,174,934,463 -$49,427,852 $87.68 349
2023 Q2 45,905,078 $7,556,450,399 +$147,455,979 $164.55 406
2023 Q1 44,980,748 $8,299,415,764 +$131,407,346 $184.54 422
2022 Q4 44,446,198 $6,576,885,382 -$261,109,381 $147.95 399
2022 Q3 46,357,468 $6,545,831,305 +$305,043,460 $141.16 405
2022 Q2 44,331,887 $5,805,221,289 -$135,171,216 $130.67 394
2022 Q1 45,258,877 $6,588,554,196 -$700,651,716 $145.54 435
2021 Q4 46,324,863 $13,546,650,154 -$6,634,536 $292.78 502
2021 Q3 46,260,495 $12,512,067,827 +$159,621,988 $270.71 457
2021 Q2 45,755,768 $11,088,901,374 +$303,542,126 $242.45 447
2021 Q1 45,034,445 $10,334,233,469 -$154,653,705 $229.66 469
2020 Q4 46,134,675 $12,367,769,029 +$118,456,546 $268.38 480
2020 Q3 45,513,746 $10,736,770,297 -$426,567 $236.06 449
2020 Q2 45,565,863 $10,382,684,886 -$45,339,410 $227.99 467
2020 Q1 45,927,274 $8,139,877,716 +$51,831,017 $177.12 394
2019 Q4 44,938,202 $7,100,269,622 +$134,499,433 $158.06 376
2019 Q3 44,078,987 $6,554,014,971 -$26,539,658 $148.79 387
2019 Q2 44,253,000 $6,579,080,937 +$87,334,220 $148.82 380
2019 Q1 44,448,873 $6,143,880,819 +$95,355,328 $138.28 397
2018 Q4 43,916,003 $4,715,440,176 +$4,670,131 $107.37 362
2018 Q3 43,758,851 $5,449,391,811 +$30,553,990 $124.54 347
2018 Q2 43,689,354 $4,266,798,989 +$9,236,648 $97.65 334
2018 Q1 43,588,229 $3,833,601,534 +$188,073,886 $87.95 319
2017 Q4 43,928,863 $3,723,381,823 -$101,698,184 $84.80 333
2017 Q3 43,964,692 $3,803,529,775 -$1,695,010 $86.56 316
2017 Q2 43,952,421 $4,007,992,911 +$119,093,443 $91.18 330
2017 Q1 42,650,521 $3,978,048,815 +$842,907,910 $93.26 363
2016 Q4 40,449,406 $2,726,201,878 -$2,875,693 $67.40 308
2016 Q3 40,553,020 $2,411,634,707 +$66,436,055 $59.49 290
2016 Q2 39,482,461 $2,073,623,320 +$7,155,965 $52.51 261
2016 Q1 39,653,579 $1,658,291,704 -$7,451,543 $41.84 223
2015 Q4 39,855,135 $1,654,226,332 -$19,334,090 $41.51 234
2015 Q3 40,350,761 $1,555,877,307 -$10,152,670 $38.56 216
2015 Q2 40,873,752 $1,583,092,408 -$59,576,606 $38.74 198
2015 Q1 42,183,688 $1,389,342,995 +$18,569,076 $32.98 174
2014 Q4 42,045,270 $1,107,548,336 -$9,241,122 $26.34 177
2014 Q3 43,030,779 $915,663,226 -$56,283,952 $21.28 166
2014 Q2 45,421,118 $1,071,924,710 -$84,818,879 $23.60 176
2014 Q1 48,536,107 $1,325,418,870 +$23,725,182 $27.31 168