Position in MASI
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$75,964,897
+$75,255,421 QoQ
Shares Held
427,081
+7729.2% QoQ
Ownership
0.816%
of shares outstanding
% of Portfolio
0.81%
of 13F equity value
Holder Rank
#24
of 445 holders
Holding Since
Jun 2020
6 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in MASI Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Mar 31, 2026Magnetar Financial LLC holds $168,884,411 across 16 Medical Devices names. MASI ranks #2 (45.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PEN |
Penumbra Inc
|
251,433 | $82,563,053 | |
| 2 | MASI |
Masimo Corp
This page
|
427,081 | $75,964,897 | |
| 3 | ABT |
Abbott Laboratories
|
22,052 | $2,264,077 | |
| 4 | SYK |
Stryker Corp
|
6,160 | $2,024,113 | |
| 5 | GMED |
Globus Medical Inc
|
19,292 | $1,662,198 | |
| 6 | PODD |
Insulet Corp
|
5,458 | $1,145,306 | |
| 7 | TCMD |
Tactile Systems Technology Inc
|
27,594 | $721,030 | |
| 8 | AORT |
Artivion, Inc.
|
17,444 | $638,798 |
All Filings in MASI
Export CSV
6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $75,964,897 | 427,081 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $709,476 | 5,455 | Shares | Sole | 2026-02-17 | |
| 2022-03-31 | $1,144,817 | 7,866 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $406,964 | 1,390 | Shares | Sole | 2022-02-14 | |
| 2021-03-31 | $2,244,237 | 9,772 | Shares | Sole | 2021-05-14 | |
| 2020-06-30 | $255,804 | 1,122 | Shares | Sole | 2020-08-14 | |
| No filing history on record for this holder in this stock. | ||||||