Simplex Trading’s Masimo MASI Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $196K | Buy |
+1,100
| New | +$173K | ﹤0.01% | 4330 |
|
|
2025
Q4 | – | Sell |
-1,000
| Closed | -$147K | – | 9418 |
|
|
2025
Q3 | $147K | Buy |
1,000
+700
| +233% | +$106K | ﹤0.01% | 5300 |
|
|
2025
Q2 | $50K | Sell |
300
-7,300
| -96% | -$1.17M | ﹤0.01% | 5918 |
|
|
2025
Q1 | $1.27M | Sell |
7,600
-2,900
| -28% | -$503K | ﹤0.01% | 2470 |
|
|
2024
Q4 | $1.74M | Sell |
10,500
-38,400
| -79% | -$6.06M | ﹤0.01% | 2325 |
|
|
2024
Q3 | $6.52M | Buy |
48,900
+41,100
| +527% | +$4.77M | ﹤0.01% | 1314 |
|
|
2024
Q2 | $982K | Sell |
7,800
-8,500
| -52% | -$1.12M | ﹤0.01% | 2933 |
|
|
2024
Q1 | $2.39M | Sell |
16,300
-28,100
| -63% | -$3.63M | ﹤0.01% | 2228 |
|
|
2023
Q4 | $5.2M | Sell |
44,400
-12,500
| -22% | -$1.17M | ﹤0.01% | 1514 |
|
|
2023
Q3 | $4.99M | Buy |
56,900
+54,100
| +1,932% | +$6.3M | ﹤0.01% | 1356 |
|
|
2023
Q2 | $460K | Buy |
2,800
+1,800
| +180% | +$313K | ﹤0.01% | 3398 |
|
|
2023
Q1 | $184K | Buy |
1,000
+800
| +400% | +$135K | ﹤0.01% | 4428 |
|
|
2022
Q4 | $29K | Hold |
200
| – | – | ﹤0.01% | 6509 |
|
|
2022
Q3 | $28K | Sell |
200
-900
| -82% | -$131K | ﹤0.01% | 7155 |
|
|
2022
Q2 | $143K | Buy |
1,100
+100
| +10% | +$13.4K | ﹤0.01% | 5063 |
|
|
2022
Q1 | $145K | Buy |
+1,000
| New | +$192K | ﹤0.01% | 5627 |
|
|
2021
Q4 | – | Sell |
-5,900
| Closed | -$1.47M | – | 11001 |
|
|
2021
Q3 | $1.47M | Hold |
5,900
| – | – | ﹤0.01% | 2567 |
|
|
2021
Q2 | $1.43M | Buy |
5,900
+5,898
| +294,900% | +$1.35M | ﹤0.01% | 2625 |
|
|
2021
Q1 | $45K | Sell |
2
-181
| -99% | -$45.5K | ﹤0.01% | 6740 |
|
|
2020
Q4 | $4.91M | Buy |
183
+165
| +917% | +$41.1K | 0.01% | 1001 |
|
|
2020
Q3 | $424K | Sell |
18
-54
| -75% | -$12.1K | ﹤0.01% | 3201 |
|
|
2020
Q2 | $1.64M | Buy |
72
+28
| +64% | +$6.14K | ﹤0.01% | 1676 |
|
|
2020
Q1 | $779K | Sell |
44
-28
| -39% | -$4.8K | ﹤0.01% | 2123 |
|
|
2019
Q4 | $1.14M | Buy |
72
+47
| +188% | +$7.07K | ﹤0.01% | 1978 |
|
|
2019
Q3 | $371K | Sell |
25
-166
| -87% | -$25.2K | ﹤0.01% | 2931 |
|
|
2019
Q2 | $2.84M | Sell |
191
-290
| -60% | -$39.8K | 0.01% | 1038 |
|
|
2019
Q1 | $6.65M | Buy |
481
+479
| +23,950% | +$60.1K | 0.02% | 542 |
|
|
2018
Q4 | $21K | Sell |
2
-4
| -67% | -$446 | ﹤0.01% | 5282 |
|
|
2018
Q3 | $74K | Sell |
6
-18
| -75% | -$2K | ﹤0.01% | 4743 |
|
|
2018
Q2 | $234K | Sell |
24
-3
| -11% | -$285 | ﹤0.01% | 3289 |
|
|
2018
Q1 | $2K | Buy |
+27
| New | +$2.35K | ﹤0.01% | 5300 |
|
|
2017
Q4 | – | Sell |
-23
| Closed | -$1K | – | 6371 |
|
|
2017
Q3 | $1K | Sell |
23
-114
| -83% | -$10.1K | ﹤0.01% | 5483 |
|
|
2017
Q2 | $126K | Buy |
137
+106
| +342% | +$9.73K | 0.01% | 1567 |
|
|
2017
Q1 | $3K | Buy |
+31
| New | +$2.55K | ﹤0.01% | 5022 |
|
|
2016
Q4 | – | Sell |
-31
| Closed | -$2K | – | 6239 |
|
|
2016
Q3 | $2K | Buy |
31
+29
| +1,450% | +$1.64K | ﹤0.01% | 4973 |
|
|
2016
Q2 | $1K | Buy |
+2
| New | +$94 | ﹤0.01% | 5337 |
|
|
2015
Q1 | – | Sell |
-10
| Closed | -$1K | – | 5310 |
|
|
2014
Q4 | $1K | Buy |
+10
| New | +$247 | ﹤0.01% | 4175 |
|
Other funds holding MASI
PCM
PCM
HI
VCM
VPM
Simplex Trading's MASI Position: Q3 2025 in Review
Simplex Trading sold out of Masimo (MASI) in Q3 2025, closing a stake of 98 shares — an estimated $14.8K sold.
Simplex Trading first reported a position in MASI in Q3 2015 and held it in 28 quarters. The position peaked at $4.44M in Q3 2023. 358 funds tracked by Wall St. Rank hold MASI as of Q3 2025.
- Simplex Trading reported no remaining Masimo position as of Q3 2025 after selling out during the quarter.
- Simplex Trading sold 98 Masimo shares in Q3 2025, an estimated $14.8K.
- Simplex Trading first reported a position in Masimo in Q3 2015 and held it in 28 quarters.
- Simplex Trading's Masimo position peaked at $4.44M in Q3 2023.
- 358 funds tracked by Wall St. Rank held Masimo as of Q3 2025.
Based on Simplex Trading's 13F filing for Q3 2025, filed 12 Nov 2025.