Institutional Manager · CIK 0001388551
CAXTON CORP
Princeton, NJ · File #028-15293
Latest AUM
$4.3M
Positions
11
Top-10 Concentration
99.4%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| EXITED | REZOLUTE INC | 76200L309 | -1,986,818 | -$18.7M | $0 |
| NEW | SPYRE THERAPEUTICS INC | SYRE | +8,919 | +$292,194 | $0 |
| EXITED | ENLIVEN THERAPEUTICS INC | 29337E102 | -13,097 | -$268,106 | $0 |
| EXITED | BICARA THERAPEUTICS INC | 055477103 | -10,941 | -$172,760 | $0 |
| REDUCE | MIND MEDICINE MINDMED INC | 60255C885 | -11,323 | -$151,612 | +$43,211 |
| REDUCE | COMPASS THERAPEUTICS INC | CMPX | -24,008 | -$128,921 | +$100,047 |
| REDUCE | SPDR GOLD TR | GLD | -322 | -$127,612 | +$297,577 |
| NEW | X4 PHARMACEUTICALS INC | XFOR | +15,557 | +$62,227 | $0 |
| REDUCE | KYVERNA THERAPEUTICS INC | KYTX | -4,208 | -$39,556 | +$78,137 |
| REDUCE | LEXEO THERAPEUTICS INC | LXEO | -3,389 | -$33,653 | +$57,022 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202511 pos · $4.3M
- 13F HOLDINGS REPORTQ/E Sep 202512 pos · $22.9M
- 13F HOLDINGS REPORTQ/E Jun 202511 pos · $9.9M
- 13F HOLDINGS REPORTQ/E Mar 202512 pos · $5.1M
- 13F HOLDINGS REPORTQ/E Dec 202415 pos · $16.6M
- 13F HOLDINGS REPORTQ/E Sep 202412 pos · $24.2M
- 13F HOLDINGS REPORTQ/E Jun 202412 pos · $19.7M
- 13F HOLDINGS REPORTQ/E Mar 202411 pos · $17.6M
- 13F HOLDINGS REPORTQ/E Dec 20239 pos · $26.3M
Top 11 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | SPDR GOLD TR | GLD | 6,964 | $2.8M | 64.50% |
| 2 | BERKSHIRE HATHAWAY INC DEL | BRK-A | 710 | $356,771 | 8.34% |
| 3 | SPYRE THERAPEUTICS INC | SYRE | 8,919 | $292,194 | 6.83% |
| 4 | MIND MEDICINE MINDMED INC | 60255C885 | 15,688 | $210,058 | 4.91% |
| 5 | KYVERNA THERAPEUTICS INC | KYTX | 18,773 | $176,468 | 4.12% |
| 6 | COMPASS THERAPEUTICS INC | CMPX | 29,495 | $158,386 | 3.70% |
| 7 | LEXEO THERAPEUTICS INC | LXEO | 13,943 | $138,453 | 3.24% |
| 8 | X4 PHARMACEUTICALS INC | XFOR | 15,557 | $62,227 | 1.45% |
| 9 | INHIBIKASE THERAPEUTICS INC | IKT | 28,453 | $58,328 | 1.36% |
| 10 | SAB BIOTHERAPEUTICS INC | SABSW | 10,527 | $39,371 | 0.92% |
| 11 | CONTEXT THERAPEUTICS INC | CNTX | 18,403 | $27,053 | 0.63% |