Steve Schonfeld’s Masimo MASI Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | – | Sell |
-117,297
| Closed | -$20.9M | – | 2839 |
|
|
2026
Q1 | $20.9M | Sell |
117,297
-147,739
| -56% | -$23.2M | 0.15% | 142 |
|
|
2025
Q4 | $34.5M | Buy |
265,036
+254,152
| +2,335% | +$36.4M | 0.15% | 105 |
|
|
2025
Q3 | $1.61M | Sell |
10,884
-3,355
| -24% | -$508K | 0.01% | 1151 |
|
|
2025
Q2 | $2.4M | Buy |
14,239
+3,969
| +39% | +$634K | 0.02% | 889 |
|
|
2025
Q1 | $1.71M | Buy |
10,270
+6,290
| +158% | +$1.09M | 0.01% | 1028 |
|
|
2024
Q4 | $658K | Sell |
3,980
-4,811
| -55% | -$760K | ﹤0.01% | 1292 |
|
|
2024
Q3 | $1.17M | Sell |
8,791
-2,879
| -25% | -$334K | 0.01% | 1109 |
|
|
2024
Q2 | $1.47M | Buy |
+11,670
| New | +$1.54M | 0.01% | 1041 |
|
|
2023
Q4 | – | Sell |
-10,793
| Closed | -$946K | – | 2071 |
|
|
2023
Q3 | $946K | Buy |
+10,793
| New | +$1.26M | 0.01% | 1040 |
|
|
2023
Q2 | – | Sell |
-3,772
| Closed | -$696K | – | 2353 |
|
|
2023
Q1 | $696K | Sell |
3,772
-318
| -8% | -$53.6K | 0.01% | 1070 |
|
|
2022
Q4 | $605K | Sell |
4,090
-2,729
| -40% | -$376K | 0.01% | 1426 |
|
|
2022
Q3 | $963K | Buy |
+6,819
| New | +$996K | 0.01% | 1295 |
|
|
2022
Q2 | – | Sell |
-57,166
| Closed | -$8.32M | – | 2800 |
|
|
2022
Q1 | $8.32M | Buy |
+57,166
| New | +$11M | 0.07% | 309 |
|
|
2021
Q3 | – | Sell |
-3,458
| Closed | -$838K | – | 2334 |
|
|
2021
Q2 | $838K | Buy |
3,458
+958
| +38% | +$219K | 0.01% | 989 |
|
|
2021
Q1 | $574K | Buy |
+2,500
| New | +$628K | 0.01% | 1094 |
|
|
2020
Q4 | – | Sell |
-7,280
| Closed | -$1.72M | – | 1741 |
|
|
2020
Q3 | $1.72M | Buy |
7,280
+5,207
| +251% | +$1.17M | 0.03% | 548 |
|
|
2020
Q2 | $473K | Sell |
2,073
-4,359
| -68% | -$957K | 0.01% | 824 |
|
|
2020
Q1 | $1.14M | Buy |
+6,432
| New | +$1.1M | 0.07% | 326 |
|
|
2019
Q3 | – | Sell |
-2,400
| Closed | -$357K | – | 1144 |
|
|
2019
Q2 | $357K | Sell |
2,400
-42,500
| -95% | -$5.83M | 0.01% | 732 |
|
|
2019
Q1 | $6.21M | Buy |
44,900
+3,737
| +9% | +$469K | 0.22% | 124 |
|
|
2018
Q4 | $4.42M | Buy |
+41,163
| New | +$4.59M | 0.17% | 168 |
|
|
2018
Q3 | – | Sell |
-28,248
| Closed | -$2.76M | – | 937 |
|
|
2018
Q2 | $2.76M | Sell |
28,248
-6,713
| -19% | -$638K | 0.15% | 220 |
|
|
2018
Q1 | $3.08M | Buy |
+34,961
| New | +$3.05M | 0.23% | 129 |
|
|
2017
Q2 | – | Sell |
-16,929
| Closed | -$1.58M | – | 701 |
|
|
2017
Q1 | $1.58M | Sell |
16,929
-64,404
| -79% | -$5.3M | 0.16% | 178 |
|
|
2016
Q4 | $5.48M | Buy |
+81,333
| New | +$5M | 0.71% | 26 |
|
Other funds holding MASI
Steve Schonfeld's MASI Position: Q2 2026 in Review
Steve Schonfeld sold out of Masimo (MASI) in Q2 2026, closing a stake of 117,297 shares — an estimated $20.9M sold.
Steve Schonfeld first reported a position in MASI in Q4 2016 and held it in 25 quarters. The position peaked at $34.5M in Q4 2025. 2 funds tracked by Wall St. Rank hold MASI as of Q2 2026.
- Steve Schonfeld reported no remaining Masimo position as of Q2 2026 after selling out during the quarter.
- Steve Schonfeld sold 117,297 Masimo shares in Q2 2026, an estimated $20.9M.
- Steve Schonfeld first reported a position in Masimo in Q4 2016 and held it in 25 quarters.
- Steve Schonfeld's Masimo position peaked at $34.5M in Q4 2025.
- 2 funds tracked by Wall St. Rank held Masimo as of Q2 2026.
Based on Schonfeld Strategic Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.