Position in QSI
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$95,113
-$124,688 QoQ
Shares Held
107,473
-62.2% QoQ
Ownership
0.049%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#35
of 141 holders
Holding Since
Mar 2021
9 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in QSI Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Jun 30, 2026GROUP ONE TRADING LLC holds $20,255,911 across 37 Medical Devices names. QSI ranks #13 (0.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BSX |
Boston Scientific Corp
|
154,900 | $6,611,132 | |
| 2 | MDT |
Medtronic plc
|
44,220 | $3,459,330 | |
| 3 | ABT |
Abbott Laboratories
|
37,819 | $3,431,696 | |
| 4 | BFLY |
Butterfly Network, Inc.
|
189,442 | $1,595,101 | |
| 5 | AHCO |
AdaptHealth Corp.
|
146,994 | $1,531,677 | |
| 6 | DXCM |
Dexcom Inc
|
11,059 | $744,823 | |
| 7 | TMDX |
TransMedics Group, Inc.
|
9,527 | $632,783 | |
| 8 | GEHC |
GE HealthCare Technologies Inc.
|
8,647 | $553,494 |
All Filings in QSI
Export CSV
9 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $95,113 | 107,473 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $219,801 | 283,981 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $270,381 | 245,801 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $532,661 | 377,774 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $263,878 | 134,632 | Shares | Sole | 2025-08-14 | |
| 2023-06-30 | $5,645 | 3,154 | Shares | Sole | 2023-08-09 | |
| 2023-03-31 | $2,735 | 1,554 | Shares | Sole | 2023-05-12 | |
| 2021-06-30 | $337,150 | 27,500 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 CAPA | — | 300 | Shares | Sole | 2021-05-12 | |
| No filing history on record for this holder in this stock. | ||||||