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Bruce Kovner 13F Portfolio
CAXTON CORP
Latest SEC 13F filing: 2026-06-30
Bruce Kovner runs CAXTON CORP and currently holds 10 stock positions, which is fewer than the average of 229 among the investors we track. The portfolio is valued at approximately $1.85M. Their top holdings are SPCX, BRK-B, VOO, BX. The top five represent 67.1% of reported portfolio weight. Bruce Kovner ranks #N/A out of 1000 investors tracked by Alpha Score. In the most recent quarter, Bruce Kovner initiated 3 new positions. They added to 1 existing position. Their current best-performing preview position is BRK-B with returns of +4.42%.
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Top 5 Holdings
SPCX24.0%
BRK-B20.3%
VOO12.6%
BX10.2%
Top 5: 67.1%
Portfolio Returns
1 Year
+99.70%
#0/10003 Year
+311.35%
#0/10005 Year
+249.65%
#0/1000Portfolio Value
$1.85M
Alpha Score
213.3
#0 of 1000
Holdings
10
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Bruce Kovner Current 13F Holdings
Reported holdings from CAXTON CORP's latest SEC 13F filing, ranked by portfolio weight.
10 stock holdings
| Holding | Weight | Avg Buy | Current | Return | Quarter Change |
|---|---|---|---|---|---|
SP SPCX SPACE EXPLORATION TECHN CORP | 24.03% | $170.86 | $151.21 | -11.50% | New Buy |
 BRK-B BERKSHIRE HATHAWAY INC DEL | 20.35% | $415.10 | $510.36 | +22.95% | Added +3.71% |
 VOO VANGUARD INDEX FDS | 12.58% | $686.81 | $702.53 | +2.29% | New Buy |
 BX BLACKSTONE INC | 10.16% | $117.67 | $128.51 | +9.21% | New Buy |