Position in QSI
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$0
-$1,214,435 QoQ
Shares Held
0
-100.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2021
18 quarters on record
Common Shares in QSI Over Time
Shares Held
Position Value (USD)
Derivatives in QSI
reported options exposure · as of Mar 31, 2026CallValue
$194,661
CallShares
251,500
PutValue
$24,071
PutShares
31,100
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 Mar 31, 2026JANE STREET GROUP, LLC holds $517,213,376 across 57 Medical Devices names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BSX |
Boston Scientific Corp
|
4,032,117 | $253,015,341 | |
| 2 | DXCM |
Dexcom Inc
|
741,669 | $46,576,812 | |
| 3 | ESTA |
Establishment Labs Holdings Inc.
|
627,700 | $35,640,805 | |
| 4 | EW |
Edwards Lifesciences Corp
|
390,333 | $31,257,865 | |
| 5 | MDT |
Medtronic plc
|
349,874 | $30,316,580 | |
| 6 | ABT |
Abbott Laboratories
|
160,022 | $16,429,457 | |
| 7 | IRTC |
iRhythm Holdings, Inc.
|
112,864 | $13,320,209 | |
| 8 | ATEC |
Alphatec Holdings, Inc.
|
878,549 | $9,558,612 |
All Filings in QSI
Export CSV
35 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $24,071 | 31,100 | Put | Defined | 2026-05-12 | |
| 2026-03-31 | $194,661 | 251,500 | Call | Defined | 2026-05-12 | |
| 2025-12-31 | $306,460 | 278,600 | Call | Defined | 2026-02-12 | |
| 2025-12-31 | $1,214,435 | 1,104,033 | Shares | Defined | 2026-02-12 | |
| 2025-12-31 | $57,420 | 52,200 | Put | Defined | 2026-02-12 | |
| 2025-09-30 | $21,150 | 15,000 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $86,292 | 61,200 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $2,270,131 | 1,610,023 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $558,115 | 284,753 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $84,280 | 43,000 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $46,648 | 23,800 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $44,760 | 37,300 | Call | Defined | 2025-05-19 | |
| 2025-03-31 | $44,880 | 37,400 | Put | Defined | 2025-05-19 | |
| 2024-12-31 | $64,381 | 23,845 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $120,960 | 44,800 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $268,380 | 99,400 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $226,399 | 256,689 | Shares | Defined | 2024-11-15 | |
| 2024-06-30 | $319,258 | 304,056 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $297,711 | 151,123 | Shares | Defined | 2024-05-16 | |
| 2023-12-31 | $24,549 | 12,214 | Shares | Defined | 2024-02-15 | |
| 2023-09-30 | $46,123 | 27,785 | Shares | Defined | 2023-11-15 | |
| 2023-06-30 | $48,864 | 27,299 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $230,624 | 131,037 | Shares | Defined | 2023-05-16 | |
| 2022-09-30 | $31,501 | 11,455 | Shares | Defined | 2022-11-15 | |
| 2022-03-31 | $319,400 | 68,248 | Shares | Defined | 2022-05-17 | |
| 2022-03-31 | $875,628 | 187,100 | Call | Defined | 2022-05-17 | |
| 2022-03-31 | $104,364 | 22,300 | Put | Defined | 2022-05-17 | |
| 2021-12-31 | $206,194 | 26,200 | Put | Defined | 2022-02-15 | |
| 2021-12-31 | $1,581,870 | 201,000 | Call | Defined | 2022-02-15 | |
| 2021-09-30 | $207,090 | 24,831 | Shares | Defined | 2021-11-16 | |
| 2021-09-30 | $1,333,566 | 159,900 | Call | Defined | 2021-11-16 | |
| 2021-09-30 | $266,046 | 31,900 | Put | Defined | 2021-11-16 | |
| 2021-06-30 | $534,585 | 43,604 | Shares | Defined | 2021-08-16 | |
| 2021-06-30 | $2,261,970 | 184,500 | Call | Defined | 2021-08-16 | |
| 2021-06-30 | $128,730 | 10,500 | Put | Defined | 2021-08-16 | |
| No filing history on record for this holder in this stock. | ||||||