Westfield Capital Management CO LP Masimo Corp Transaction History

Westfield Capital Management CO LP

  • $19.3 Billion
  • Q1 2025

A detailed history of Westfield Capital Management CO LP transactions in Masimo Corp stock. As of the latest transaction made, Westfield Capital Management CO LP holds 671,479 shares of MASI stock, worth $101 Million. This represents 0.58% of its overall portfolio holdings.

Number of Shares
671,479
Previous 768,858 12.67%
Holding current value
$101 Million
Previous $127 Million 11.98%
% of portfolio
0.58%
Previous 0.59%

Shares

24 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q1 2025

May 09, 2025
SELL
$163.55 - $190.63 $15.9 Million - $18.6 Million
-97,379 Reduced 12.67%
671,479 $112 Million
Q4 2024

Feb 11, 2025
SELL
$132.43 - $177.7 $82.8 Million - $111 Million
-625,198 Reduced 44.85%
768,858 $127 Million
Q3 2024

Nov 12, 2024
BUY
$104.79 - $133.77 $27.5 Million - $35.1 Million
262,370 Added 23.18%
1,394,056 $186 Million
Q2 2024

Aug 14, 2024
BUY
$115.24 - $144.91 $51.3 Million - $64.6 Million
445,586 Added 64.94%
1,131,686 $143 Million
Q1 2024

May 10, 2024
SELL
$109.17 - $146.85 $14.5 Million - $19.4 Million
-132,376 Reduced 16.17%
686,100 $101 Million
Q4 2023

Feb 09, 2024
BUY
$76.73 - $120.62 $16.5 Million - $25.9 Million
214,795 Added 35.58%
818,476 $95.9 Million
Q3 2023

Nov 13, 2023
SELL
$84.17 - $161.17 $29.5 Million - $56.4 Million
-350,118 Reduced 36.71%
603,681 $52.9 Million
Q2 2023

Aug 11, 2023
BUY
$155.24 - $196.47 $148 Million - $187 Million
953,799 New
953,799 $157 Million
Q2 2021

Aug 10, 2021
SELL
$208.49 - $248.2 $43.3 Million - $51.6 Million
-207,846 Closed
0 $0
Q1 2021

May 14, 2021
SELL
$220.31 - $283.75 $6.52 Million - $8.4 Million
-29,597 Reduced 12.46%
207,846 $47.7 Million
Q4 2020

Feb 12, 2021
SELL
$223.82 - $271.35 $11.9 Million - $14.4 Million
-53,100 Reduced 18.28%
237,443 $63.7 Million
Q3 2020

Nov 13, 2020
SELL
$209.49 - $246.81 $2.76 Million - $3.25 Million
-13,184 Reduced 4.34%
290,543 $68.6 Million
Q2 2020

Aug 13, 2020
SELL
$178.49 - $250.39 $23.1 Million - $32.4 Million
-129,550 Reduced 29.9%
303,727 $69.2 Million
Q1 2020

May 14, 2020
SELL
$148.38 - $186.78 $378,072 - $475,915
-2,548 Reduced 0.58%
433,277 $76.7 Million
Q4 2019

Feb 13, 2020
BUY
$140.81 - $159.49 $30.2 Million - $34.2 Million
214,380 Added 96.81%
435,825 $68.9 Million
Q3 2019

Nov 08, 2019
BUY
$145.61 - $159.87 $4.87 Million - $5.35 Million
33,468 Added 17.8%
221,445 $32.9 Million
Q2 2019

Aug 13, 2019
SELL
$122.29 - $148.82 $974,651 - $1.19 Million
-7,970 Reduced 4.07%
187,977 $28 Million
Q1 2019

May 14, 2019
SELL
$102.78 - $138.28 $953,284 - $1.28 Million
-9,275 Reduced 4.52%
195,947 $27.1 Million
Q4 2018

Feb 08, 2019
SELL
$98.38 - $125.32 $2.75 Million - $3.5 Million
-27,915 Reduced 11.97%
205,222 $22 Million
Q3 2018

Nov 14, 2018
SELL
$97.19 - $124.54 $36.2 Million - $46.4 Million
-372,250 Reduced 61.49%
233,137 $29 Million
Q2 2018

Aug 13, 2018
SELL
$83.88 - $102.21 $3.99 Million - $4.86 Million
-47,571 Reduced 7.29%
605,387 $59.1 Million
Q1 2018

May 14, 2018
BUY
$82.06 - $95.19 $13.5 Million - $15.7 Million
164,490 Added 33.67%
652,958 $57.4 Million
Q4 2017

Feb 13, 2018
BUY
$84.49 - $90.09 $22.2 Million - $23.6 Million
262,489 Added 116.16%
488,468 $41.4 Million
Q3 2017

Nov 13, 2017
BUY
$81.79 - $96.62 $18.5 Million - $21.8 Million
225,979
225,979 $19.6 Million

Others Institutions Holding MASI

# of Institutions
419
Shares Held
48.2M
Call Options Held
58.5K
Put Options Held
58.6K
View Full List

About MASIMO CORP

MASI Quotes by TradingView
  • Ticker MASI
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Medical Instruments & Supplies
  • Shares Outstandng 52,530,200
  • Market Cap $7.89B
  • Description
  • Masimo Corporation develops, manufactures, and markets noninvasive monitoring technologies and hospital automation solutions worldwide. The company offers masimo signal extraction technology (SET) pulse oximetry with measure-through motion and low perfusion pulse oximetry monitoring to address the primary limitations of conventional pulse oximet...
More about MASI
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