Position in SERA
as of Jun 30, 2026
· filed Sep 2, 2026
Position Value
$75,368
-$429,917 QoQ
Shares Held
41,411
-83.4% QoQ
Ownership
0.105%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#23
of 46 holders
Holding Since
Sep 2021
13 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in SERA Over Time
Shares Held
Position Value (USD)
Derivatives in SERA
reported options exposure · as of Mar 31, 2026CallValue
$30,044
CallShares
14,800
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Medical Devices
Healthcare · as of Jun 30, 2026CITADEL ADVISORS LLC holds $3,553,993,098 across 97 Medical Devices names. SERA ranks #79 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ABT |
Abbott Laboratories
|
8,597,227 | $780,112,377 | |
| 2 | MDT |
Medtronic plc
|
5,373,877 | $420,398,397 | |
| 3 | EW |
Edwards Lifesciences Corp
|
3,997,925 | $361,652,295 | |
| 4 | ZBH |
Zimmer Biomet Holdings, Inc.
|
3,477,472 | $299,375,563 | |
| 5 | BSX |
Boston Scientific Corp
|
4,987,748 | $212,877,084 | |
| 6 | GKOS |
GLAUKOS Corp
|
1,390,017 | $194,268,775 | |
| 7 | GEHC |
GE HealthCare Technologies Inc.
|
2,367,032 | $151,513,717 | |
| 8 | PEN |
Penumbra Inc
|
448,763 | $141,696,917 |
All Filings in SERA
Export CSV
20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $75,368 | 41,411 | Shares | Defined | 2026-09-02 | |
| 2026-03-31 | $505,285 | 248,909 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $30,044 | 14,800 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $2,087,460 | 707,614 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $2,000,462 | 653,746 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $1,742,349 | 629,007 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $34,071 | 12,300 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $2,944 | 800 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $1,104 | 300 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $2,308,857 | 627,407 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $3,256 | 400 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $235,246 | 28,900 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $520 | 64 | Shares | Defined | 2025-02-14 | |
| 2024-06-30 | $646,209 | 109,157 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $2,368 | 400 | Call | Defined | 2024-08-14 | |
| 2023-06-30 | $39,826 | 12,087 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $78,909 | 20,603 | Shares | Defined | 2023-05-15 | |
| 2022-09-30 | $20,092 | 12,558 | Shares | Defined | 2022-11-14 | |
| 2021-12-31 | $150,260 | 21,872 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $632,858 | 56,963 | Shares | Defined | 2021-11-15 | |
| No filing history on record for this holder in this stock. | ||||||