Tower Research Capital LLC (TRC)
Position in CRBU — Caribou Biosciences, Inc.
CIK 1533421
NEW YORK, NY
Position in CRBU
as of Jun 30, 2026
· filed Aug 11, 2026
Position Value
$15,579
+$4,138 QoQ
Shares Held
8,852
+47.0% QoQ
Ownership
0.008%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#108
of 137 holders
Holding Since
Sep 2021
20 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in CRBU Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Tower Research Capital LLC (TRC) holds $49,479,230 across 466 Biotechnology names. CRBU ranks #275 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ARGX |
Argenx SE
|
4,547 | $4,218,570 | |
| 2 | BBIO |
BridgeBio Pharma, Inc.
|
38,206 | $2,845,582 | |
| 3 | ARWR |
Arrowhead Pharmaceuticals, Inc.
|
34,537 | $2,815,110 | |
| 4 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
4,292 | $2,131,964 | |
| 5 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
3,927 | $2,108,602 | |
| 6 | AXSM |
Axsome Therapeutics, Inc.
|
6,437 | $1,575,584 | |
| 7 | INSM |
INSMED Inc
|
10,927 | $1,165,036 | |
| 8 | ROIV |
Roivant Sciences Ltd.
|
32,746 | $1,158,880 |
All Filings in CRBU
Export CSV
20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $15,579 | 8,852 | Shares | Defined | 2026-08-11 | |
| 2026-03-31 | $11,441 | 6,022 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $32,358 | 20,351 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $44,779 | 19,219 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $93,306 | 74,053 | Shares | Other | 2025-08-15 | |
| 2025-03-31 | $9,973 | 10,924 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $11,689 | 7,352 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $10,415 | 5,314 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $64,125 | 39,101 | Shares | Other | 2024-08-13 | |
| 2024-03-31 | $22,754 | 4,427 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $119,951 | 20,934 | Shares | Other | 2024-02-13 | |
| 2023-09-30 | $34,683 | 7,256 | Shares | Other | 2023-11-14 | |
| 2023-06-30 | $29,201 | 6,871 | Shares | Other | 2023-08-14 | |
| 2023-03-31 | $19,397 | 3,653 | Shares | Defined | 2023-05-09 | |
| 2022-12-31 | $58,321 | 9,287 | Shares | Other | 2023-02-10 | |
| 2022-09-30 | $143,025 | 13,557 | Shares | Other | 2022-11-10 | |
| 2022-06-30 | $16,659 | 3,068 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $42,970 | 4,681 | Shares | Other | 2022-05-12 | |
| 2021-12-31 | $40,139 | 2,660 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $11,218 | 470 | Shares | Defined | 2021-11-15 | |
| No filing history on record for this holder in this stock. | ||||||