Tower Research Capital LLC (TRC)
Position in CTKB — Cytek Biosciences, Inc.
CIK 1533421
NEW YORK, NY
Position in CTKB
as of Jun 30, 2026
· filed Aug 11, 2026
Position Value
$69,081
+$24,333 QoQ
Shares Held
15,594
+52.3% QoQ
Ownership
0.012%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#96
of 155 holders
Holding Since
Sep 2021
20 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in CTKB Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Jun 30, 2026Tower Research Capital LLC (TRC) holds $34,014,339 across 122 Medical Devices names. CTKB ranks #37 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SNN |
Smith & Nephew PLC
|
301,051 | $8,673,279 | |
| 2 | PHG |
Koninklijke Philips NV
|
172,778 | $4,697,833 | |
| 3 | BSX |
Boston Scientific Corp
|
86,205 | $3,679,229 | |
| 4 | ABT |
Abbott Laboratories
|
28,491 | $2,585,273 | |
| 5 | MDT |
Medtronic plc
|
31,327 | $2,450,710 | |
| 6 | SYK |
Stryker Corp
|
5,175 | $1,629,296 | |
| 7 | PEN |
Penumbra Inc
|
3,046 | $961,774 | |
| 8 | EW |
Edwards Lifesciences Corp
|
9,286 | $840,010 |
All Filings in CTKB
Export CSV
20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $69,081 | 15,594 | Shares | Defined | 2026-08-11 | |
| 2026-03-31 | $44,748 | 10,240 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $16,351 | 3,238 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $27,326 | 7,875 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $67,184 | 19,760 | Shares | Defined | 2025-08-15 | |
| 2025-03-31 | $18,085 | 4,510 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $20,047 | 3,089 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $13,307 | 2,402 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $95,161 | 17,054 | Shares | Defined | 2024-08-13 | |
| 2024-03-31 | $9,367 | 1,396 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $330,927 | 36,286 | Shares | Other | 2024-02-13 | |
| 2023-09-30 | $32,076 | 5,811 | Shares | Other | 2023-11-14 | |
| 2023-06-30 | $29,453 | 3,449 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $108,643 | 11,822 | Shares | Other | 2023-05-09 | |
| 2022-12-31 | $125,847 | 12,326 | Shares | Other | 2023-02-10 | |
| 2022-09-30 | $121,351 | 8,244 | Shares | Defined | 2022-11-10 | |
| 2022-06-30 | $41,321 | 3,851 | Shares | Other | 2022-08-15 | |
| 2022-03-31 | $20,319 | 1,885 | Shares | Other | 2022-05-12 | |
| 2021-12-31 | $23,647 | 1,449 | Shares | Other | 2022-02-14 | |
| 2021-09-30 | $10,897 | 509 | Shares | Other | 2021-11-15 | |
| No filing history on record for this holder in this stock. | ||||||