Position in BLFS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$4,658,801
+$2,305,774 QoQ
Shares Held
244,172
+150.9% QoQ
Ownership
0.500%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in BLFS Over Time
Shares Held
Position Value (USD)
Derivatives in BLFS
reported options exposure · as of Sep 30, 2025CallValue
$321,426
CallShares
12,600
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 Instruments & Supplies
Healthcare · as of Mar 31, 2026CITADEL ADVISORS LLC holds $1,983,694,213 across 42 Medical Instruments & Supplies names. BLFS ranks #25 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ISRG |
Intuitive Surgical Inc
|
1,356,011 | $625,107,510 | |
| 2 | TFX |
Teleflex Inc
|
1,171,096 | $140,074,791 | |
| 3 | BDX |
Becton Dickinson & Co
|
829,501 | $130,422,441 | |
| 4 | RGEN |
Repligen Corp
|
1,099,181 | $129,505,505 | |
| 5 | ALGN |
Align Technology Inc
|
730,025 | $125,148,185 | |
| 6 | NVST |
Envista Holdings Corp
|
4,584,572 | $116,310,591 | |
| 7 | HOLX |
HOLOGIC INC
|
1,090,660 | $82,442,989 | |
| 8 | WST |
West Pharmaceutical Services Inc
|
323,587 | $81,103,845 |
All Filings in BLFS
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $4,658,801 | 244,172 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $2,353,027 | 97,313 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $3,532,726 | 138,484 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $321,426 | 12,600 | Call | Defined | 2025-11-14 | |
| 2025-06-30 | $9,051,904 | 420,237 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $2,804,797 | 122,802 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $57,100 | 2,500 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $57,100 | 2,500 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $111,628 | 4,300 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $122,012 | 4,700 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $7,517,652 | 289,586 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $205,328 | 8,200 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $6,648,044 | 265,497 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $100,160 | 4,000 | Put | Defined | 2024-11-14 | |
| 2024-06-30 | $17,144 | 800 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $248,588 | 11,600 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $2,096,089 | 97,811 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $139,125 | 7,500 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $24,115 | 1,300 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $10,425,952 | 562,046 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $9,034,366 | 555,961 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $30,875 | 1,900 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $230,750 | 14,200 | Call | Defined | 2024-02-14 | |
| 2023-09-30 | $8,409,778 | 608,963 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $24,858 | 1,800 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $247,199 | 17,900 | Call | Defined | 2023-11-14 | |
| 2023-06-30 | $192,270 | 8,700 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $50,830 | 2,300 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $3,867 | 175 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $34,800 | 1,600 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $685,429 | 31,514 | Shares | Defined | 2023-05-15 | |
| 2023-03-31 | $91,350 | 4,200 | Call | Defined | 2023-05-15 | |
| 2022-12-31 | $303,940 | 16,700 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $938,410 | 51,561 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $72,800 | 4,000 | Put | Defined | 2023-02-14 | |
| 2022-09-30 | $370,825 | 16,300 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $468,490 | 20,593 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $881,698 | 63,845 | Shares | Defined | 2022-08-15 | |
| 2022-06-30 | $254,104 | 18,400 | Put | Defined | 2022-08-15 | |
| 2022-03-31 | $3,041,545 | 133,812 | Shares | Defined | 2022-05-16 | |
| 2022-03-31 | $352,315 | 15,500 | Put | Defined | 2022-05-16 | |
| 2021-12-31 | $4,066,566 | 109,111 | Shares | Defined | 2022-02-14 | |
| 2021-12-31 | $1,319,358 | 35,400 | Call | Defined | 2022-02-14 | |
| 2021-12-31 | $1,308,177 | 35,100 | Put | Defined | 2022-02-14 | |
| 2021-09-30 | $1,925,560 | 45,500 | Call | Defined | 2021-11-15 | |
| 2021-09-30 | $440,128 | 10,400 | Put | Defined | 2021-11-15 | |
| 2021-09-30 | $1,978,332 | 46,747 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $1,081,593 | 24,300 | Call | Defined | 2021-08-16 | |
| 2021-06-30 | $605,336 | 13,600 | Put | Defined | 2021-08-16 | |
| 2021-03-31 | $514,800 | 14,300 | Call | Defined | 2021-05-21 | |
| No filing history on record for this holder in this stock. | ||||||