BAMCO Inc
MASI

BAMCO Inc’s Masimo MASI Stock Holding History

BAMCO Inc’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
-373,899
Closed -$48.6M – 344
2025
Q4 		$48.6M Sell
373,899
-14,848
-4% -$2.13M 0.13% 138
2025
Q3 		$57.4M Buy
388,747
+4,158
+1% +$629K 0.15% 122
2025
Q2 		$64.7M Buy
384,589
+67,307
+21% +$10.8M 0.18% 108
2025
Q1 		$52.9M Buy
317,282
+10,138
+3% +$1.76M 0.16% 118
2024
Q4 		$50.8M Sell
307,144
-40,056
-12% -$6.33M 0.13% 133
2024
Q3 		$46.3M Hold
347,200
– – 0.12% 142
2024
Q2 		$43.7M Buy
347,200
+1,400
+0.4% +$184K 0.13% 139
2024
Q1 		$50.8M Buy
+345,800
New +$44.6M 0.14% 135
2021
Q1 		– Sell
-900
Closed -$242K – 401
2020
Q4 		$242K Hold
900
– – ﹤0.01% 366
2020
Q3 		$212K Hold
900
– – ﹤0.01% 327
2020
Q2 		$205K Hold
900
– – ﹤0.01% 303
2020
Q1 		$159K Hold
900
– – ﹤0.01% 303
2019
Q4 		$142K Hold
900
– – ﹤0.01% 326
2019
Q3 		$134K Buy
+900
New +$137K ﹤0.01% 324
2014
Q4 		– Sell
-16,760
Closed -$357K – 364
2014
Q3 		$357K Sell
16,760
-741,626
-98% -$16.9M ﹤0.01% 344
2014
Q2 		$17.9M Sell
758,386
-608,091
-45% -$15.1M 0.07% 209
2014
Q1 		$37.3M Sell
1,366,477
-3,537
-0.3% -$101K 0.15% 156
2013
Q4 		$40M Sell
1,370,014
-673,330
-33% -$18.8M 0.17% 149
2013
Q3 		$54.4M Sell
2,043,344
-2,625
-0.1% -$64.7K 0.25% 110
2013
Q2 		$43.4M Buy
+2,045,969
New +$43M 0.23% 122

Other funds holding MASI

BlackRock
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
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return
Massachusetts Financial Services
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
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

BAMCO Inc's MASI Position: Q1 2026 in Review

BAMCO Inc sold out of Masimo (MASI) in Q1 2026, closing a stake of 373,899 shares — an estimated $48.6M sold.

BAMCO Inc first reported a position in MASI in Q2 2013 and held it in 20 quarters. The position peaked at $64.7M in Q2 2025. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • BAMCO Inc reported no remaining Masimo position as of Q1 2026 after selling out during the quarter.
  • BAMCO Inc sold 373,899 Masimo shares in Q1 2026, an estimated $48.6M.
  • BAMCO Inc first reported a position in Masimo in Q2 2013 and held it in 20 quarters.
  • BAMCO Inc's Masimo position peaked at $64.7M in Q2 2025.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on BAMCO Inc's 13F filing for Q1 2026, filed 15 May 2026.