Position in QSI
as of Jun 30, 2026
· filed Sep 2, 2026
Position Value
$39,236
+$27,204 QoQ
Shares Held
44,335
+185.2% QoQ
Ownership
0.020%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#55
of 141 holders
Holding Since
Mar 2021
22 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in QSI Over Time
Shares Held
Position Value (USD)
Derivatives in QSI
reported options exposure · as of Jun 30, 2026CallValue
$160,185
CallShares
181,000
PutValue
$95,226
PutShares
107,600
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. QSI ranks #84 (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 QSI
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $95,226 | 107,600 | Put | Defined | 2026-09-02 | |
| 2026-06-30 | $39,236 | 44,335 | Shares | Defined | 2026-09-02 | |
| 2026-06-30 | $160,185 | 181,000 | Call | Defined | 2026-09-02 | |
| 2026-03-31 | $88,081 | 113,800 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $12,032 | 15,546 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $69,814 | 90,200 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $611,600 | 556,000 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $287,100 | 261,000 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $2,943,706 | 2,676,097 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $459,237 | 325,700 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $573,936 | 407,047 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $655,227 | 464,700 | Put | Defined | 2025-11-14 | |
| 2025-06-30 | $512,148 | 261,300 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $1,003,128 | 511,800 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $1,094,281 | 558,307 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $166,197 | 138,498 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $626,040 | 521,700 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $357,360 | 297,800 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $2,078,460 | 769,800 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $797,310 | 295,300 | Put | Defined | 2025-02-14 | |
| 2024-09-30 | $5,909 | 6,700 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $60,064 | 68,100 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $70,342 | 79,753 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $4,305 | 4,100 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $237,614 | 226,300 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $52,815 | 50,300 | Call | Defined | 2024-08-14 | |
| 2024-03-31 | $197,985 | 100,500 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $10,441 | 5,300 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $183,210 | 93,000 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $42,210 | 21,000 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $251,511 | 125,130 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $328,233 | 163,300 | Call | Defined | 2024-02-14 | |
| 2023-09-30 | $365,034 | 219,900 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $43,160 | 26,000 | Put | Defined | 2023-11-14 | |
| 2023-06-30 | $128,880 | 72,000 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $60,681 | 33,900 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $191,727 | 107,111 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $53,913 | 30,633 | Shares | Defined | 2023-05-15 | |
| 2023-03-31 | $128,832 | 73,200 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $59,664 | 33,900 | Put | Defined | 2023-05-15 | |
| 2022-12-31 | $300,669 | 164,300 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $100,650 | 55,000 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $264,954 | 144,784 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $70,125 | 25,500 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $456,857 | 166,130 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $322,850 | 117,400 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $27,840 | 12,000 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $339,184 | 146,200 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $673,136 | 290,145 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $195,085 | 41,685 | Shares | Defined | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||