Birchview Capital’s Masimo MASI Stock Holding History

Birchview Capital’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	–	Sell	-8,280	Closed	-$1.08M	–	79
2025 Q4	$1.08M	Hold	8,280	–	–	0.63%	38
2025 Q3	$1.22M	Hold	8,280	–	–	0.92%	29
2025 Q2	$1.39M	Sell	8,280 -3,000	-27%	-$479K	1.38%	22
2025 Q1	$1.88M	Sell	11,280 -4,000	-26%	-$694K	1.63%	17
2024 Q4	$2.53M	Hold	15,280	–	–	2.06%	14
2024 Q3	$2.04M	Hold	15,280	–	–	1.76%	17
2024 Q2	$1.92M	Hold	15,280	–	–	1.78%	15
2024 Q1	$2.24M	Hold	15,280	–	–	1.83%	13
2023 Q4	$1.79M	Hold	15,280	–	–	1.4%	16
2023 Q3	$1.34M	Hold	15,280	–	–	1.14%	16
2023 Q2	$2.51M	Hold	15,280	–	–	1.88%	13
2023 Q1	$2.82M	Hold	15,280	–	–	2.21%	10
2022 Q4	$2.26M	Hold	15,280	–	–	1.6%	13
2022 Q3	$2.16M	Hold	15,280	–	–	1.52%	16
2022 Q2	$2M	Buy	15,280 +6,000	+65%	+$803K	1.45%	16
2022 Q1	$1.35M	Buy	9,280 +1,280	+16%	+$246K	0.97%	17
2021 Q4	$2.34M	Hold	8,000	–	–	1.51%	12
2021 Q3	$2.17M	Hold	8,000	–	–	1.47%	12
2021 Q2	$1.94M	Hold	8,000	–	–	1.16%	14
2021 Q1	$1.84M	Hold	8,000	–	–	1.09%	17
2020 Q4	$2.15M	Hold	8,000	–	–	1.24%	16
2020 Q3	$1.89M	Hold	8,000	–	–	1.26%	15
2020 Q2	$1.82M	Hold	8,000	–	–	1.1%	14
2020 Q1	$1.42M	Hold	8,000	–	–	1.26%	15
2019 Q4	$1.26M	Hold	8,000	–	–	0.92%	16
2019 Q3	$1.19M	Hold	8,000	–	–	0.79%	10
2019 Q2	$1.19M	Hold	8,000	–	–	0.72%	14
2019 Q1	$1.11M	Hold	8,000	–	–	0.69%	13
2018 Q4	$859K	Hold	8,000	–	–	0.81%	14
2018 Q3	$996K	Hold	8,000	–	–	0.64%	18
2018 Q2	$781K	Hold	8,000	–	–	0.53%	22
2018 Q1	$704K	Hold	8,000	–	–	0.46%	18
2017 Q4	$678K	Hold	8,000	–	–	0.4%	20
2017 Q3	$692K	Hold	8,000	–	–	0.36%	20
2017 Q2	$729K	Sell	8,000 -7,000	-47%	-$643K	0.39%	18
2017 Q1	$1.4M	Sell	15,000 -21,600	-59%	-$1.78M	0.78%	7
2016 Q4	$2.47M	Hold	36,600	–	–	1.52%	5
2016 Q3	$2.18M	Hold	36,600	–	–	1.27%	6
2016 Q2	$1.92M	Hold	36,600	–	–	1.4%	6
2016 Q1	$1.53M	Hold	36,600	–	–	1.09%	8
2015 Q4	$1.52M	Hold	36,600	–	–	0.87%	9
2015 Q3	$1.41M	Hold	36,600	–	–	0.91%	8
2015 Q2	$1.42M	Hold	36,600	–	–	0.75%	12
2015 Q1	$1.21M	Hold	36,600	–	–	0.63%	12
2014 Q4	$964K	Buy	+36,600	New	+$903K	0.56%	19

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

Birchview Capital's MASI Position: Q1 2026 in Review

Birchview Capital sold out of Masimo (MASI) in Q1 2026, closing a stake of 8,280 shares — an estimated $1.08M sold.

Birchview Capital first reported a position in MASI in Q4 2014 and held it in 45 quarters. The position peaked at $2.82M in Q1 2023. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

Birchview Capital reported no remaining Masimo position as of Q1 2026 after selling out during the quarter.
Birchview Capital sold 8,280 Masimo shares in Q1 2026, an estimated $1.08M.
Birchview Capital first reported a position in Masimo in Q4 2014 and held it in 45 quarters.
Birchview Capital's Masimo position peaked at $2.82M in Q1 2023.
445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Birchview Capital's 13F filing for Q1 2026, filed 15 May 2026.