Mario Gabelli Masimo Corp Transaction History

Gamco Investors, Inc. Et Al

$9.45 Billion
Q3 2025

A detailed history of Mario Gabelli (Gamco Investors, Inc. Et Al) transactions in Masimo Corp stock. As of the latest transaction made, Gamco Investors, Inc. Et Al holds 83,800 shares of MASI stock, worth $12.7 Million. This represents 0.13% of its overall portfolio holdings.

Number of Shares

83,800

Previous 84,500 0.83%

Holding current value

$12.7 Million

Previous $14.2 Million 13.02%

% of portfolio

0.13%

Previous 0.15%

20 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 12, 2025	SELL	$136.77 - $171.34 $95,739 - $119,938	-700 Reduced 0.83%	83,800 $12.4 Million
Q2 2023 Aug 10, 2023	SELL	$155.24 - $196.47 $77,620 - $98,235	-500 Reduced 0.59%	84,500 $13.9 Million
Q1 2022 May 13, 2022	SELL	$135.71 - $284.87 $339,275 - $712,175	-2,500 Reduced 2.86%	85,000 $12.4 Million
Q4 2021 Feb 11, 2022	SELL	$266.41 - $303.29 $266,410 - $303,290	-1,000 Reduced 1.13%	87,500 $25.6 Million
Q3 2021 Nov 12, 2021	SELL	$249.0 - $285.24 $249,000 - $285,240	-1,000 Reduced 1.12%	88,500 $24 Million
Q2 2021 Aug 13, 2021	SELL	$208.49 - $248.2 $104,245 - $124,100	-500 Reduced 0.56%	89,500 $21.7 Million
Q1 2021 May 14, 2021	SELL	$220.31 - $283.75 $440,620 - $567,500	-2,000 Reduced 2.17%	90,000 $20.7 Million
Q4 2020 Feb 05, 2021	SELL	$223.82 - $271.35 $447,640 - $542,700	-2,000 Reduced 2.13%	92,000 $24.7 Million
Q3 2020 Nov 06, 2020	SELL	$209.49 - $246.81 $209,490 - $246,810	-1,000 Reduced 1.05%	94,000 $22.2 Million
Q2 2020 Aug 13, 2020	SELL	$178.49 - $250.39 $713,960 - $1 Million	-4,000 Reduced 4.04%	95,000 $21.7 Million
Q1 2020 May 14, 2020	SELL	$148.38 - $186.78 $445,140 - $560,340	-3,000 Reduced 2.94%	99,000 $17.5 Million
Q4 2019 Feb 14, 2020	SELL	$140.81 - $159.49 $211,215 - $239,235	-1,500 Reduced 1.45%	102,000 $16.1 Million
Q3 2019 Nov 01, 2019	SELL	$145.61 - $159.87 $655,245 - $719,415	-4,500 Reduced 4.17%	103,500 $15.4 Million
Q1 2019 May 02, 2019	SELL	$102.78 - $138.28 $102,780 - $138,280	-1,000 Reduced 0.92%	108,000 $14.9 Million
Q4 2018 Jan 30, 2019	SELL	$98.38 - $125.32 $295,140 - $375,960	-3,000 Reduced 2.68%	109,000 $11.7 Million
Q3 2018 Nov 02, 2018	SELL	$97.19 - $124.54 $583,140 - $747,240	-6,000 Reduced 5.08%	112,000 $13.9 Million
Q2 2018 Aug 10, 2018	SELL	$83.88 - $102.21 $335,520 - $408,840	-4,000 Reduced 3.28%	118,000 $11.5 Million
Q1 2018 May 09, 2018	SELL	$82.06 - $95.19 $41,030 - $47,595	-500 Reduced 0.41%	122,000 $10.7 Million
Q4 2017 Feb 02, 2018	SELL	$84.49 - $90.09 $211,225 - $225,225	-2,500 Reduced 2.0%	122,500 $10.4 Million
Q3 2017 Nov 01, 2017	BUY	$81.79 - $96.62 $10.2 Million - $12.1 Million	125,000	125,000 $10.8 Million

Others Institutions Holding MASI

# of Institutions

403

Shares Held

48.4M

Call Options Held

33.1K

Put Options Held

71.9K

View Full List

About MASIMO CORP

Ticker MASI
Exchange NASDAQ
Sector Healthcare
Industry Medical Instruments & Supplies
Shares Outstandng 52,530,200
Market Cap $7.94B
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

Track Mario Gabelli's Portfolio

Portfolio Update

Get notified when there are updates to the investment portfolio of Gamco Investors, Inc. Et Al, based on Form 13F filings with the SEC.

News

Stay updated on Gamco Investors, Inc. Et Al and Mario Gabelli with notifications on news.

Account