Gabelli Funds’s Masimo MASI Stock Holding History

Gabelli Funds’s Portfolio MASI Stock Details MASI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$22.4M	Buy	126,082 +93,382	+286%	+$14.7M	0.15%	177
2025 Q4	$4.25M	Hold	32,700	–	–	0.03%	545
2025 Q3	$4.82M	Hold	32,700	–	–	0.03%	501
2025 Q2	$5.5M	Sell	32,700 -300	-0.9%	-$47.9K	0.04%	464
2025 Q1	$5.5M	Hold	33,000	–	–	0.04%	441
2024 Q4	$5.45M	Hold	33,000	–	–	0.04%	427
2024 Q3	$4.4M	Hold	33,000	–	–	0.03%	496
2024 Q2	$4.16M	Hold	33,000	–	–	0.03%	485
2024 Q1	$4.85M	Hold	33,000	–	–	0.04%	464
2023 Q4	$3.87M	Hold	33,000	–	–	0.03%	503
2023 Q3	$2.89M	Hold	33,000	–	–	0.02%	572
2023 Q2	$5.43M	Hold	33,000	–	–	0.04%	438
2023 Q1	$6.09M	Sell	33,000 -200	-0.6%	-$33.7K	0.05%	424
2022 Q4	$4.91M	Hold	33,200	–	–	0.04%	457
2022 Q3	$4.69M	Hold	33,200	–	–	0.04%	460
2022 Q2	$4.34M	Sell	33,200 -500	-1%	-$66.9K	0.03%	494
2022 Q1	$4.91M	Sell	33,700 -300	-0.9%	-$57.6K	0.03%	512
2021 Q4	$9.96M	Sell	34,000 -1,000	-3%	-$285K	0.06%	347
2021 Q3	$9.47M	Sell	35,000 -1,000	-3%	-$271K	0.06%	353
2021 Q2	$8.73M	Sell	36,000 -200	-0.6%	-$45.6K	0.06%	378
2021 Q1	$8.31M	Sell	36,200 -1,800	-5%	-$452K	0.06%	384
2020 Q4	$10.2M	Sell	38,000 -2,500	-6%	-$623K	0.07%	325
2020 Q3	$9.56M	Sell	40,500 -4,000	-9%	-$897K	0.07%	318
2020 Q2	$10.1M	Sell	44,500 -7,800	-15%	-$1.71M	0.08%	301
2020 Q1	$9.26M	Sell	52,300 -11,200	-18%	-$1.92M	0.08%	292
2019 Q4	$10M	Sell	63,500 -14,500	-19%	-$2.18M	0.06%	347
2019 Q3	$11.6M	Sell	78,000 -13,500	-15%	-$2.05M	0.08%	309
2019 Q2	$13.6M	Sell	91,500 -8,500	-9%	-$1.17M	0.09%	289
2019 Q1	$13.8M	Sell	100,000 -7,000	-7%	-$879K	0.09%	298
2018 Q4	$11.5M	Hold	107,000	–	–	0.08%	324
2018 Q3	$13.3M	Sell	107,000 -3,000	-3%	-$333K	0.08%	338
2018 Q2	$10.7M	Sell	110,000 -5,000	-4%	-$475K	0.06%	373
2018 Q1	$10.1M	Hold	115,000	–	–	0.06%	373
2017 Q4	$9.75M	Sell	115,000 -2,000	-2%	-$173K	0.06%	393
2017 Q3	$10.1M	Sell	117,000 -1,000	-0.8%	-$88.4K	0.06%	384
2017 Q2	$10.8M	Sell	118,000 -2,000	-2%	-$184K	0.06%	364
2017 Q1	$11.2M	Sell	120,000 -2,000	-2%	-$165K	0.07%	360
2016 Q4	$8.22M	Hold	122,000	–	–	0.05%	426
2016 Q3	$7.26M	Hold	122,000	–	–	0.04%	456
2016 Q2	$6.41M	Hold	122,000	–	–	0.04%	485
2016 Q1	$5.1M	Hold	122,000	–	–	0.03%	541
2015 Q4	$5.06M	Hold	122,000	–	–	0.03%	543
2015 Q3	$4.7M	Hold	122,000	–	–	0.03%	567
2015 Q2	$4.73M	Hold	122,000	–	–	0.02%	595
2015 Q1	$4.02M	Buy	122,000 +4,000	+3%	+$115K	0.02%	638
2014 Q4	$3.11M	Buy	118,000 +13,000	+12%	+$321K	0.02%	699
2014 Q3	$2.23M	Hold	105,000	–	–	0.01%	764
2014 Q2	$2.48M	Buy	105,000 +30,000	+40%	+$744K	0.01%	743
2014 Q1	$2.05M	Buy	75,000 +34,000	+83%	+$970K	0.01%	759
2013 Q4	$1.2M	Buy	41,000 +26,000	+173%	+$728K	0.01%	827
2013 Q3	$400K	Sell	15,000 -35,000	-70%	-$863K	﹤0.01%	955
2013 Q2	$1.06M	Buy	+50,000	New	+$1.05M	0.01%	818

Other funds holding MASI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

PCM

Politan Capital Management New York $985M AUM 3.12% 1-Year Est. Return

PCM

Pentwater Capital Management Naples, Florida $19.3B AUM 58.13% 1-Year Est. Return

Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return

HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Gabelli Funds's MASI Position: Q1 2026 in Review

Gabelli Funds increased its Masimo (MASI) stake by 286% in Q1 2026, buying an estimated $14.7M and bringing the position to 126,082 shares worth $22.4M. The position accounts for 0.15% of the portfolio, ranked #177.

Gabelli Funds first reported a position in MASI in Q2 2013 and has held it in 52 quarters since. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

Gabelli Funds held 126,082 shares of Masimo worth $22.4M as of Q1 2026.
Gabelli Funds bought 93,382 Masimo shares in Q1 2026, an estimated $14.7M.
Masimo made up 0.15% of Gabelli Funds's portfolio in Q1 2026, its #177 holding.
Gabelli Funds first reported a position in Masimo in Q2 2013 and has held it in 52 quarters since.
445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Gabelli Funds's 13F filing for Q1 2026, filed 14 May 2026.