Institutional Manager · CIK 0001032814
CHECK CAPITAL MANAGEMENT INC/CA
COSTA MESA, CA · File #028-05998
Latest AUM
$3.44B
Positions
75
Top-10 Concentration
80.2%
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 |
|---|---|---|---|---|---|
| ADD | Brookfield Corp. | 11271J107 | +1,459,800 | +$67.0M | -$66.5M |
| REDUCE | FedEx | FDX | -197,951 | -$57.2M | +$10.6M |
| NEW | Jefferies | JEF | +452,487 | +$28.0M | $0 |
| EXITED | CarMax | 143130102 | -600,043 | -$26.9M | $0 |
| ADD | Sirius XM | 829933100 | +821,657 | +$16.4M | -$6.8M |
| ADD | First Citizens | 31946M103 | +7,424 | +$15.9M | +$12.6M |
| REDUCE | Alphabet | GOOG | -11,739 | -$3.7M | +$50.3M |
| ADD | Cimpress | CMPR | +22,319 | +$1.5M | +$1.4M |
| REDUCE | LKQ Corp | LKQ | -32,837 | -$991,677 | -$541,058 |
| REDUCE | AerCap Holdings | AER | -4,375 | -$628,950 | +$18.9M |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202575 pos · $3.44B
- 13F HOLDINGS REPORTQ/E Sep 202570 pos · $3.03B
- 13F HOLDINGS REPORTQ/E Jun 202567 pos · $2.96B
- 13F HOLDINGS REPORTQ/E Mar 202569 pos · $3.43B
- 13F HOLDINGS REPORTQ/E Dec 202477 pos · $3.36B
- 13F HOLDINGS REPORTQ/E Sep 202472 pos · $3.25B
- 13F HOLDINGS REPORTQ/E Jun 202468 pos · $3.02B
- 13F HOLDINGS REPORTQ/E Mar 202466 pos · $3.04B
- 13F HOLDINGS REPORTQ/E Dec 202367 pos · $2.6M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | Berkshire Hathaway | BRK-A | 1,102,508 | $554.2M | 16.16% |
| 2 | Berkshire Hathaway | BRK-A | 947,000 | $476.0M | 13.88% |
| 3 | Berkshire Hathaway | BRK-A | 653,900 | $328.7M | 9.59% |
| 4 | Berkshire Hathaway | BRK-A | 589,600 | $296.4M | 8.64% |
| 5 | Berkshire Hathaway | BRK-A | 586,700 | $294.9M | 8.60% |
| 6 | Alphabet | GOOG | 703,613 | $220.8M | 6.44% |
| 7 | Brookfield Corp. | 11271J107 | 4,388,968 | $201.4M | 5.87% |
| 8 | Markel | MKL | 77,313 | $166.2M | 4.85% |
| 9 | AerCap Holdings | AER | 827,362 | $118.9M | 3.47% |
| 10 | First Citizens | 31946M103 | 42,788 | $91.8M | 2.68% |
| 11 | Berkshire Hathaway | BRK-A | 136,600 | $68.7M | 2.00% |
| 12 | Berkshire Hathaway | BRK-A | 119,600 | $60.1M | 1.75% |
| 13 | Sirius XM | 829933100 | 2,883,500 | $57.7M | 1.68% |
| 14 | Disney (Walt) | 254687106 | 436,641 | $49.7M | 1.45% |
| 15 | LKQ Corp | LKQ | 1,558,481 | $47.1M | 1.37% |
| 16 | Berkshire Hathaway | BRK-A | 73,800 | $37.1M | 1.08% |
| 17 | Berkshire Hathaway | BRK-A | 69,500 | $34.9M | 1.02% |
| 18 | Hershey Foods | HSY | 190,689 | $34.7M | 1.01% |
| 19 | Berkshire Hathaway | BRK-A | 68,300 | $34.3M | 1.00% |
| 20 | Berkshire Hathaway | BRK-A | 63,100 | $31.7M | 0.93% |