Position in FULC
as of Mar 31, 2026
· filed May 18, 2026
Position Value
$536,900
-$373,622 QoQ
Shares Held
70,000
-13.0% QoQ
Ownership
0.105%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#64
of 168 holders
Holding Since
Jun 2023
12 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in FULC Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026RBF Capital, LLC holds $7,669,628 across 23 Biotechnology names. FULC ranks #5 (7.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | XOMA |
XOMA Royalty Corp
|
30,000 | $941,100 | |
| 2 | LYEL |
Lyell Immunopharma, Inc.
|
44,094 | $884,525 | |
| 3 | RLMD |
Relmada Therapeutics, Inc.
|
120,000 | $835,200 | |
| 4 | KROS |
Keros Therapeutics, Inc.
|
62,800 | $693,312 | |
| 5 | FULC |
Fulcrum Therapeutics, Inc.
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|
70,000 | $536,900 | |
| 6 | XBIT |
XBiotech Inc.
|
198,501 | $466,477 | |
| 7 | STRO |
Sutro Biopharma, Inc.
|
15,272 | $380,425 | |
| 8 | ZURA |
Zura Bio Ltd
|
58,193 | $346,248 |
All Filings in FULC
Export CSV
12 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $536,900 | 70,000 | Shares | Sole | 2026-05-18 | |
| 2025-12-31 | $910,522 | 80,506 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $740,655 | 80,506 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $553,881 | 80,506 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $231,857 | 80,506 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $378,378 | 80,506 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $378,876 | 106,128 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $775,000 | 125,000 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $1,321,600 | 140,000 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $945,000 | 140,000 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $684,204 | 154,100 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $508,530 | 154,100 | Shares | Sole | 2023-08-14 | |
| No filing history on record for this holder in this stock. | ||||||