AIP
MASI

Ameritas Investment Partners’s Masimo MASI Stock Holding History

Ameritas Investment Partners’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 		$1.5M Sell
8,411
-4,861
-37% -$763K 0.05% 450
2025
Q4 		$1.73M Buy
13,272
+4,616
+53% +$661K 0.05% 385
2025
Q3 		$1.28M Sell
8,656
-88
-1% -$13.3K 0.04% 514
2025
Q2 		$1.47M Hold
8,744
– – 0.05% 460
2025
Q1 		$1.46M Sell
8,744
-157
-2% -$27.2K 0.05% 455
2024
Q4 		$1.47M Sell
8,901
-158
-2% -$24.9K 0.05% 478
2024
Q3 		$1.21M Sell
9,059
-426
-4% -$49.4K 0.04% 560
2024
Q2 		$1.19M Sell
9,485
-315
-3% -$41.5K 0.04% 546
2024
Q1 		$1.44M Hold
9,800
– – 0.05% 482
2023
Q4 		$1.15M Sell
9,800
-152
-2% -$14.2K 0.04% 559
2023
Q3 		$873K Sell
9,952
-2,174
-18% -$253K 0.03% 618
2023
Q2 		$2M Sell
12,126
-186
-2% -$32.4K 0.08% 295
2023
Q1 		$2.27M Sell
12,312
-117
-0.9% -$19.7K 0.09% 244
2022
Q4 		$2.15M Hold
12,429
– – 0.09% 256
2022
Q3 		$1.75M Sell
12,429
-1,155
-9% -$169K 0.08% 279
2022
Q2 		$1.77M Hold
13,584
– – 0.08% 289
2022
Q1 		$1.98M Hold
13,584
– – 0.07% 318
2021
Q4 		$3.98M Buy
13,584
+167
+1% +$47.6K 0.13% 134
2021
Q3 		$3.63M Sell
13,417
-260
-2% -$70.5K 0.13% 132
2021
Q2 		$3.32M Sell
13,677
-322
-2% -$73.5K 0.12% 153
2021
Q1 		$3.21M Hold
13,999
– – 0.12% 155
2020
Q4 		$3.76M Sell
13,999
-312
-2% -$77.8K 0.17% 112
2020
Q3 		$3.38M Sell
14,311
-92
-0.6% -$20.6K 0.15% 114
2020
Q2 		$3.28M Buy
14,403
+643
+5% +$141K 0.16% 107
2020
Q1 		$2.44M Hold
13,760
– – 0.14% 130
2019
Q4 		$2.17M Sell
13,760
-107
-0.8% -$16.1K 0.1% 218
2019
Q3 		$2.06M Sell
13,867
-462
-3% -$70.2K 0.09% 222
2019
Q2 		$2.13M Hold
14,329
– – 0.1% 217
2019
Q1 		$1.98M Hold
14,329
– – 0.09% 241
2018
Q4 		$1.54M Buy
14,329
+191
+1% +$21.3K 0.08% 280
2018
Q3 		$1.76M Hold
14,138
– – 0.08% 296
2018
Q2 		$1.38M Sell
14,138
-3,816
-21% -$363K 0.07% 383
2018
Q1 		$1.58M Sell
17,954
-180
-1% -$15.7K 0.08% 333
2017
Q4 		$1.54M Buy
18,134
+575
+3% +$49.9K 0.07% 361
2017
Q3 		$1.48M Hold
17,559
– – 0.07% 354
2017
Q2 		$1.6M Buy
17,559
+802
+5% +$73.6K 0.08% 315
2017
Q1 		$1.56M Buy
16,757
+13,228
+375% +$1.09M 0.08% 315
2016
Q4 		$238K Hold
3,529
– – 0.01% 949
2016
Q3 		$210K Buy
+3,529
New +$199K 0.01% 991
2014
Q2 		– Sell
-12,291
Closed -$336K – 1098
2014
Q1 		$336K Hold
12,291
– – 0.03% 745
2013
Q4 		$359K Hold
12,291
– – 0.03% 728
2013
Q3 		$327K Buy
+12,291
New +$303K 0.03% 700

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

Ameritas Investment Partners's MASI Position: Q1 2026 in Review

Ameritas Investment Partners reduced its Masimo (MASI) stake by 37% in Q1 2026, selling an estimated $763K and leaving 8,411 shares worth $1.5M. The position accounts for 0.05% of the portfolio, ranked #450.

Ameritas Investment Partners first reported a position in MASI in Q3 2013 and has held it in 42 quarters since. The position peaked at $3.98M in Q4 2021. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Ameritas Investment Partners held 8,411 shares of Masimo worth $1.5M as of Q1 2026.
  • Ameritas Investment Partners sold 4,861 Masimo shares in Q1 2026, an estimated $763K.
  • Masimo made up 0.05% of Ameritas Investment Partners's portfolio in Q1 2026, its #450 holding.
  • Ameritas Investment Partners first reported a position in Masimo in Q3 2013 and has held it in 42 quarters since.
  • Ameritas Investment Partners's Masimo position peaked at $3.98M in Q4 2021.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Ameritas Investment Partners's 13F filing for Q1 2026, filed 13 May 2026.