Q2 2026 13F · SEC CIK 1388551
Caxton Corp
Investment managerFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗
- Reported 13F value
- $1.9M
- Reported positions
- 10
- Top holdings a year, 3 yrs
- +11.6%
- Average holding period
- 1.1 yrs
Caxton Corp is an investment manager that reported 10 positions worth $1.9M in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Space Exploration Techn Corp (SPCX, 24.0%), Berkshire Hathaway Inc Del (BRK-B, 20.3%), Alphabet Inc (GOOGL, 13.3%). A portfolio copying its top holdings returned 11.6% a year over the last 3 years, against 16.5% for the S&P 500.
Caxton Corp holdings all 10 positions.
Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.
| Stock | % of 13F value | Share change | Reported value |
|---|---|---|---|
| SPCXSpace Exploration Techn Corp | 24.0% | — | $445K |
| BRK-BBerkshire Hathaway Inc Del | 20.3% | +3.7% | $377K |
| GOOGLAlphabet Inc | 13.3% | — | $247K |
| VOOVanguard Index Fds | 12.6% | — | $233K |
| BXBlackstone Inc | 10.2% | — | $188K |
| KYTXKyverna Therapeutics Inc. | 5.9% | -34.2% | $110K |
| LXEOLexeo Therapeutics Inc | 4.3% | +21.7% | $79K |
| XFORX4 Pharmaceuticals Inc | 3.9% | +0.0% | $73K |
| IKTInhibikase Therapeutics Inc | 3.1% | +0.0% | $58K |
| ALXOAlx Oncology Hldgs Inc | 2.3% | +0.0% | $43K |
What Caxton Corp bought and sold in Q2 2026, against Q1 2026.
New positions
- SPCX Space Exploration Techn Corp24.0% of 13F
- GOOGL Alphabet Inc13.3% of 13F
- VOO Vanguard Index Fds12.6% of 13F
- BX Blackstone Inc10.2% of 13F
Added to
- LXEO Lexeo Therapeutics Inc+21.7% shares
Reduced
- KYTX Kyverna Therapeutics Inc.-34.2% shares
Sold out
- GLD Spdr Gold Trwas 81.5%
Share counts compared with the Q1 2026 13F; a split also changes share counts.
How the holdings did against the S&P 500.
- 1 year
- -54.5% /yr
- S&P 500 +11.7%
- 3 years
- +11.6% /yr
- S&P 500 +16.5%
- 5 years
- +5.3% /yr
- S&P 500 +12.3%
A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.
Reported 13F value by quarter.
| Quarter | 13F value | Positions |
|---|---|---|
| Q2 2026 | $1.9M | 10 |
| Q1 2026 | $4.0M | 7 |
| Q4 2025 | $4.3M | 11 |
| Q3 2025 | $22.9M | 12 |
| Q2 2025 | $9.9M | 11 |
| Q1 2025 | $5.1M | 12 |
| Q4 2024 | $16.6M | 15 |
| Q3 2024 | $24.2M | 12 |
| Q2 2024 | $19.7M | 12 |
| Q1 2024 | $17.6M | 11 |
| Q4 2023 | $18.5M | 12 |
| Q3 2023 | $26.3M | 9 |
Questions about Caxton Corp's portfolio
What stocks does Caxton Corp own?
Caxton Corp's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 10 positions worth $1.9M. The largest are Space Exploration Techn Corp (SPCX) at 24.0%, Berkshire Hathaway Inc Del (BRK-B) at 20.3%, Alphabet Inc (GOOGL) at 13.3%, Vanguard Index Fds (VOO) at 12.6% and Blackstone Inc (BX) at 10.2%.
What did Caxton Corp buy last quarter?
In Q2 2026, Caxton Corp added a new position in Space Exploration Techn Corp (SPCX), a new position in Alphabet Inc (GOOGL), a new position in Vanguard Index Fds (VOO), a new position in Blackstone Inc (BX) and Lexeo Therapeutics Inc (LXEO) (+21.7% shares), compared with its Q1 2026 filing.
What did Caxton Corp sell last quarter?
In Q2 2026, Caxton Corp sold all of Spdr Gold Tr (GLD) and Kyverna Therapeutics Inc. (KYTX) (-34.2% shares), compared with its Q1 2026 filing.
How has Caxton Corp's portfolio performed?
A portfolio copying Caxton Corp's 20 largest 13F holdings each quarter, from the day each filing was public, returned +11.6% a year over the last 3 years, against +16.5% for the S&P 500. Over 1 year: -54.5% against +11.7%. Over 5 years: +5.3% a year against +12.3%.
When is Caxton Corp's next 13F filing due?
13F filings are due 45 days after each quarter ends. Caxton Corp's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.