Masimo Corporation shares owned by Magnetar Financial
Quarter-by-quarter ownership of Masimo Corporation (MASI) shares owned by Magnetar Financial
from 13F filings
Historical chart of Magnetar Financial investment in Masimo Corporation
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Quarterly reported holdings in Masimo Corporation by Magnetar Financial
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2026-03-31 | $76M | 427k | 177.87 |
| 2025-12-31 | $710k | 5.5k | 130.06 |
| 2022-03-31 | $1.1M | 7.9k | 145.56 |
| 2021-12-31 | $407k | 1.4k | 292.81 |
| 2021-03-31 | $2.2M | 9.8k | 229.64 |
| 2020-06-30 | $256k | 1.1k | 228.16 |
| 2017-06-30 | $318k | 3.5k | 91.20 |
| 2015-12-31 | $212k | 5.1k | 41.45 |
| 2011-06-30 | $2.3M | 77k | 29.68 |
| 2011-03-31 | $447k | 14k | 33.07 |