HBK Investments’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 |
-2,576,109
| Closed | -$458M | – | 342 |
|
|
2026
Q1 | $458M | Buy |
+2,576,109
| New | +$404M | 4.65% | 6 |
|
|
2023
Q4 | – | Sell |
-295,000
| Closed | -$27.5M | – | 251 |
|
|
2023
Q3 | $25.9M | Buy |
+295,000
| New | +$34.3M | 0.14% | 38 |
|
|
2019
Q2 | – | Sell |
-28,173
| Closed | -$3.9M | – | 873 |
|
|
2019
Q1 | $3.9M | Sell |
28,173
-10,828
| -28% | -$1.36M | 0.04% | 378 |
|
|
2018
Q4 | $4.19M | Buy |
39,001
+11,893
| +44% | +$1.33M | 0.04% | 316 |
|
|
2018
Q3 | $3.38M | Buy |
27,108
+2,508
| +10% | +$278K | 0.03% | 386 |
|
|
2018
Q2 | $2.4M | Sell |
24,600
-40,901
| -62% | -$3.89M | 0.02% | 438 |
|
|
2018
Q1 | $5.76M | Buy |
65,501
+29,405
| +81% | +$2.56M | 0.04% | 238 |
|
|
2017
Q4 | $3.06M | Sell |
36,096
-42,350
| -54% | -$3.67M | 0.02% | 354 |
|
|
2017
Q3 | $6.79M | Buy |
78,446
+25,646
| +49% | +$2.27M | 0.04% | 215 |
|
|
2017
Q2 | $4.81M | Buy |
52,800
+40,600
| +333% | +$3.73M | 0.03% | 249 |
|
|
2017
Q1 | $1.14M | Sell |
12,200
-22,583
| -65% | -$1.86M | 0.01% | 402 |
|
|
2016
Q4 | $2.34M | Sell |
34,783
-38,417
| -52% | -$2.36M | 0.02% | 307 |
|
|
2016
Q3 | $4.36M | Buy |
73,200
+11,906
| +19% | +$672K | 0.04% | 240 |
|
|
2016
Q2 | $3.22M | Buy |
61,294
+37,061
| +153% | +$1.75M | 0.02% | 316 |
|
|
2016
Q1 | $1.01M | Sell |
24,233
-7,867
| -25% | -$296K | 0.01% | 586 |
|
|
2015
Q4 | $1.33M | Buy |
32,100
+16,700
| +108% | +$682K | 0.01% | 503 |
|
|
2015
Q3 | $594K | Buy |
+15,400
| New | +$629K | 0.01% | 711 |
|
|
2014
Q3 | – | Sell |
-21,700
| Closed | -$512K | – | 1024 |
|
|
2014
Q2 | $512K | Buy |
+21,700
| New | +$538K | 0.01% | 679 |
|
Other funds holding MASI
HBK Investments's MASI Position: Q2 2026 in Review
HBK Investments sold out of Masimo (MASI) in Q2 2026, closing a stake of 2,576,109 shares — an estimated $458M sold.
HBK Investments first reported a position in MASI in Q2 2014 and held it in 18 quarters. The position peaked at $458M in Q1 2026. 2 funds tracked by Wall St. Rank hold MASI as of Q2 2026.
- HBK Investments reported no remaining Masimo position as of Q2 2026 after selling out during the quarter.
- HBK Investments sold 2,576,109 Masimo shares in Q2 2026, an estimated $458M.
- HBK Investments first reported a position in Masimo in Q2 2014 and held it in 18 quarters.
- HBK Investments's Masimo position peaked at $458M in Q1 2026.
- 2 funds tracked by Wall St. Rank held Masimo as of Q2 2026.
Based on HBK Investments's 13F filing for Q2 2026, filed 14 Aug 2026.