2026 Q3 Portfolio Activity
In 2026 Q3, CHECK CAPITAL MANAGEMENT INC/CA maintained a portfolio of 53 distinct positions. The most significant new addition was Zoetis, now representing 0.07% of the total fund value. They heavily accumulated shares in Berkshire Hathaway, increasing the position by 405.2%. The fund also reduced its exposure to Berkshire Hathaway by 72.7%.
Position History
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Total Positions
53
Quarter
2026 Q3
Top Holding
BRK/B (56.8%)
Top 10 Concentration
96.1%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 53
CHECK CAPITAL MANAGEMENT INC/CA Full Holdings List — 2026 Q3
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
BRK/B
CALL
Berkshire Hatha...
|
CALL Option | 56.81% | 55.27% |
#1
Prev: #1
|
8.0 |
—
|
209,200 | 5.2% |
P
S
|
4,225,500 | $2,104,087,725 | 2009 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
BRK/B
Berkshire Hatha...
|
Financial Services | 14.76% | 11.51% |
#2
Prev: #2
|
8.0 |
—
|
261,386 | 31.3% |
P
S
|
1,097,756 | $546,627,676 | 2009 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
GOOG
Alphabet
|
Communication Services | 5.91% | 6.49% |
#3
Prev: #3
|
3.9 |
—
|
-25,255 | -3.8% |
P
S
|
642,482 | $218,919,292 | 2014 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
BN
Brookfield Corp...
|
Financial Services | 4.78% | 5.16% |
#4
Prev: #4
|
4.4 |
—
|
451,730 | 10.3% |
P
S
|
4,854,714 | $177,002,861 | 2022 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
MKL
Markel
|
Financial Services | 3.80% | 4.25% |
#5
Prev: #5
|
2.5 |
—
|
2,939 | 3.7% |
P
S
|
82,148 | $140,673,488 | 2012 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
AER
AerCap Holdings
|
Industrials | 3.07% | 3.24% |
#6
Prev: #6
|
1.7 |
—
|
-15,873 | -2.0% |
P
S
|
791,994 | $113,666,953 | 2021 Q1 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
FCNCA
First Citizens
|
Financial Services | 2.43% | 2.54% |
#7
Prev: #7
|
1.5 |
—
|
-606 | -1.4% |
P
S
|
43,747 | $90,127,487 | 2023 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
SIRI
Sirius XM
|
Communication Services | 2.02% | 2.38% |
#8
Prev: #8
|
1.3 |
—
|
-38,574 | -1.3% |
P
S
|
2,889,225 | $74,773,149 | 2024 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
AMZN
Amazon
|
Consumer Cyclical | 1.38% | 1.35% |
#9
1
Prev: #10
|
1.1 |
—
|
-1,255 | -0.6% |
P
S
|
204,802 | $51,026,315 | 2017 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
LKQ
LKQ Corp
|
Consumer Cyclical | 1.13% | 1.37% |
#10
1
Prev: #9
|
1.0 |
—
|
-53,781 | -2.9% |
P
S
|
1,832,635 | $41,839,066 | 2017 Q1 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
N/A
Cimpress
|
|
Unknown | 1.00% | 1.32% |
#11
Prev: #11
|
0.9 |
—
|
6,140 | 1.3% |
P
S
|
478,625 | $36,911,586 | — | 13F Filing | 2026-09-30 | 2026-11-05 | ||
|
HSY
Hershey Foods
|
Consumer Defensive | 0.86% | 0.99% |
#12
1
Prev: #13
|
0.8 |
—
|
-2,296 | -1.1% |
P
S
|
202,976 | $31,990,979 | 2024 Q1 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
JEF
Jefferies
|
Financial Services | 0.84% | 0.94% |
#13
1
Prev: #14
|
0.8 |
—
|
-8,852 | -1.3% |
P
S
|
677,058 | $30,961,878 | 2025 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
BRK/A
Berkshire Hatha...
|
Financial Services | 0.56% | 0.58% |
#14
1
Prev: #15
|
1.2 |
—
|
no change | no change |
P
S
|
28 | $20,916,140 | 2000 Q1 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
W
Wayfair
|
Consumer Cyclical | 0.46% | 0.43% |
#15
1
Prev: #16
|
0.7 |
—
|
-1,375 | -0.8% |
P
S
|
167,650 | $17,194,184 | 2020 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
FRFHF
Fairfax Finl Hl...
|
Financial Services | 0.10% | 0.09% |
#16
3
Prev: #19
|
2.0 |
—
|
346 | 17.5% |
P
S
|
2,325 | $3,633,960 | 2025 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
ZTS
Zoetis
|
Healthcare | 0.07% | — |
#17
Prev: #—
|
3.5 |
—
|
39,219 | — |
NEW
|
39,219 | $2,738,663 | 2026 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
DIS
Disney (Walt)
|
Communication Services | 0.01% | 1.19% |
#18
6
Prev: #12
|
0.0 |
—
|
-445,962 | -99.1% |
P
S
|
4,212 | $441,839 | 2005 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
SCHA
Schwab US Small...
|
ETF | 0.00% | 0.01% |
Sold All 😨
(Was: #53) |
0.0 |
—
|
-5,600 | -100.0% |
CLOSED
|
— | $— | 2026 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
CVX
Chevron
|
Energy | 0.00% | 0.01% |
Sold All 😨
(Was: #52) |
0.0 |
—
|
-1,250 | -100.0% |
CLOSED
|
— | $— | 2008 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
N/A
Taseko Mines
|
|
Unknown | 0.00% | 0.01% |
Sold All 😨
(Was: #51) |
0.0 |
—
|
-31,350 | -100.0% |
CLOSED
|
— | $— | — | 13F Filing | 2026-09-30 | 2026-11-05 | ||
|
LRCX
Lam Research
|
Technology | 0.00% | 0.01% |
Sold All 😨
(Was: #50) |
0.0 |
—
|
-500 | -100.0% |
CLOSED
|
— | $— | 2026 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
HBM
Hudbay Minerals
|
Basic Materials | 0.00% | 0.01% |
Sold All 😨
(Was: #49) |
0.0 |
—
|
-9,940 | -100.0% |
CLOSED
|
— | $— | 2026 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
FCX
Freeport Mcmora...
|
Basic Materials | 0.00% | 0.01% |
Sold All 😨
(Was: #48) |
0.0 |
—
|
-3,881 | -100.0% |
CLOSED
|
— | $— | 2026 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
CFG
Citizens Financ...
|
Financial Services | 0.00% | 0.01% |
Sold All 😨
(Was: #47) |
0.0 |
—
|
-3,800 | -100.0% |
CLOSED
|
— | $— | 2017 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
DGX
Quest Diagnosti...
|
Healthcare | 0.00% | 0.01% |
Sold All 😨
(Was: #46) |
0.0 |
—
|
-1,300 | -100.0% |
CLOSED
|
— | $— | 2020 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
ITW
Illinois Tool W...
|
Industrials | 0.00% | 0.01% |
Sold All 😨
(Was: #45) |
0.0 |
—
|
-1,100 | -100.0% |
CLOSED
|
— | $— | 2005 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
FDX
FedEx
|
Industrials | 0.00% | 0.01% |
Sold All 😨
(Was: #44) |
0.0 |
—
|
-961 | -100.0% |
CLOSED
|
— | $— | 2013 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
BA
Boeing Co
|
Industrials | 0.00% | 0.01% |
Sold All 😨
(Was: #43) |
0.0 |
—
|
-1,445 | -100.0% |
CLOSED
|
— | $— | 2012 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
JPM
JPMorgan Chase
|
Financial Services | 0.00% | 0.01% |
Sold All 😨
(Was: #42) |
0.0 |
—
|
-957 | -100.0% |
CLOSED
|
— | $— | 2024 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
SCHG
Schwab US Large...
|
ETF | 0.00% | 0.01% |
Sold All 😨
(Was: #41) |
0.0 |
—
|
-9,800 | -100.0% |
CLOSED
|
— | $— | 2021 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
UBER
Uber
|
Technology | 0.00% | 0.01% |
Sold All 😨
(Was: #40) |
0.0 |
—
|
-4,865 | -100.0% |
CLOSED
|
— | $— | 2023 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
WFC
Wells Fargo
|
Financial Services | 0.00% | 0.01% |
Sold All 😨
(Was: #39) |
0.0 |
—
|
-4,483 | -100.0% |
CLOSED
|
— | $— | 2002 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
FAST
Fastenal
|
Industrials | 0.00% | 0.01% |
Sold All 😨
(Was: #38) |
0.0 |
—
|
-7,920 | -100.0% |
CLOSED
|
— | $— | 2000 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
N/A
Biglari Holding...
|
|
Unknown | 0.00% | 0.01% |
Sold All 😨
(Was: #37) |
0.0 |
—
|
-967 | -100.0% |
CLOSED
|
— | $— | — | 13F Filing | 2026-09-30 | 2026-11-05 | ||
|
UNH
UnitedHealth
|
Healthcare | 0.00% | 0.01% |
Sold All 😨
(Was: #36) |
0.0 |
—
|
-1,122 | -100.0% |
CLOSED
|
— | $— | 2004 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
BAM
Brookfield Asse...
|
Financial Services | 0.00% | 0.02% |
Sold All 😨
(Was: #35) |
0.0 |
—
|
-13,129 | -100.0% |
CLOSED
|
— | $— | 2017 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
NVDA
Nvidia
|
Technology | 0.00% | 0.02% |
Sold All 😨
(Was: #34) |
0.0 |
—
|
-3,077 | -100.0% |
CLOSED
|
— | $— | 2013 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
RTX
Raytheon Techno...
|
Industrials | 0.00% | 0.02% |
Sold All 😨
(Was: #33) |
0.0 |
—
|
-3,489 | -100.0% |
CLOSED
|
— | $— | 2023 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
BAC
Bank of America
|
Financial Services | 0.00% | 0.02% |
Sold All 😨
(Was: #32) |
0.0 |
—
|
-12,038 | -100.0% |
CLOSED
|
— | $— | 2014 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
SPY
SPDR S&P 500
|
ETF | 0.00% | 0.02% |
Sold All 😨
(Was: #31) |
0.0 |
—
|
-965 | -100.0% |
CLOSED
|
— | $— | 2017 Q2 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
XT
IShares Exponen...
|
ETF | 0.00% | 0.02% |
Sold All 😨
(Was: #30) |
0.0 |
—
|
-8,800 | -100.0% |
CLOSED
|
— | $— | 2017 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
TSLA
Tesla Motors
|
Consumer Cyclical | 0.00% | 0.03% |
Sold All 😨
(Was: #29) |
0.0 |
—
|
-2,350 | -100.0% |
CLOSED
|
— | $— | 2020 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
TRUP
Trupanion Inc.
|
Financial Services | 0.00% | 0.03% |
Sold All 😨
(Was: #28) |
0.0 |
—
|
-40,075 | -100.0% |
CLOSED
|
— | $— | 2018 Q1 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
GEV
GE Vernova
|
Industrials | 0.00% | 0.03% |
Sold All 😨
(Was: #27) |
0.0 |
—
|
-901 | -100.0% |
CLOSED
|
— | $— | 2024 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
GE
General Electri...
|
Industrials | 0.00% | 0.03% |
Sold All 😨
(Was: #26) |
0.0 |
—
|
-2,990 | -100.0% |
CLOSED
|
— | $— | 2002 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
GS
Goldman Sachs
|
Financial Services | 0.00% | 0.03% |
Sold All 😨
(Was: #25) |
0.0 |
—
|
-1,230 | -100.0% |
CLOSED
|
— | $— | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
GLW
Corning
|
Technology | 0.00% | 0.04% |
Sold All 😨
(Was: #24) |
0.0 |
—
|
-5,050 | -100.0% |
CLOSED
|
— | $— | 2012 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
AMGN
Amgen
|
Healthcare | 0.00% | 0.04% |
Sold All 😨
(Was: #22) |
0.0 |
—
|
-3,885 | -100.0% |
CLOSED
|
— | $— | 2007 Q1 | 13F Filing | 2026-09-30 | 2026-11-05 | |||
|
CAT
Caterpillar Tra...
|
Industrials | 0.00% | 0.05% |
Sold All 😨
(Was: #21) |
0.0 |
—
|
-1,717 | -100.0% |
CLOSED
|
— | $— | 2012 Q3 | 13F Filing | 2026-09-30 | 2026-11-05 |
Showing 1-50 of 53 holdings