CHECK CAPITAL MANAGEMENT INC/CA

CIK

1032814

Location

COSTA MESA, CA

Portfolio Value

Mid $3,179,638,620

Diversification

Highly concentrated

Filing Date

Global Rank

#712 / 8,232 ▲ 71

Top Industry

Insurance - Diversified 73.8%

3Y Alpha vs SPY

-7.8%

Period ended 2 months ago

Filed May 4, 2026 · 41d

25 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+44.3%

SPY

+76.3%

Annualised alpha

-7.8%

Max drawdown

−11.9%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

41 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

73.8%

+0.5 pts

Top 5

90.1%

−1.5 pts

Top 10

97.9%

−0.5 pts

HHI

5,526

Highly concentrated+54

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Financial Services	87.6%	$2,785,271,337	13
Industrials	3.7%	$116,136,938	8
Consumer Cyclical	3.6%	$115,121,310	5
Communication Services	3.5%	$110,421,862	3
Consumer Defensive	1.3%	$39,979,325	1
Technology	0.3%	$9,511,390	5
Healthcare	0.1%	$1,955,077	3
Unclassified	0.0%	$627,578	1
Energy	0.0%	$613,803	2

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

14 positions

Ticker	Company	Δ Shares	Shares	Value
LKQ	Lkq Corp	+358,625	1,917,106	$56,305,403
BRK-B	Berkshire Hathaway Inc	+281,582	4,894,090	$2,345,247,928
JEF	Jefferies Financial Group Inc.	+227,684	680,171	$28,070,657
AMZN	Amazon Com Inc	+200,606	204,087	$42,505,199
SIRI	Sirius Xm Holdings Inc.	+59,095	2,942,595	$67,915,092
DIS	Walt Disney Co	+1,892	438,533	$42,265,810
HSY	Hershey Co	+1,621	192,310	$39,979,325
FCNCA	First Citizens Bancshares Inc /De/	+1,280	44,068	$83,053,196
W	Wayfair Inc.	+756	167,948	$12,631,369
UNH	Unitedhealth Group Inc	+513	1,232	$333,366
BA	Boeing Co	+200	1,445	$287,598
BAM	Brookfield Asset Management Ltd.	+168	12,954	$575,805
FRFHF	Fairfax Financial Holdings Ltd/ Can	+86	219	$372,738
JPM	Jpmorgan Chase & Co	+1	956	$281,216
No positions match the current search.

Trimmed

Positions the filer reduced

12 positions

Ticker	Company	Δ Shares	Shares	Value
BAC	Bank Of America Corp /De/	−67,705	12,032	$586,560
AER	AerCap Holdings N.V.	−9,707	817,655	$112,165,912
BN	BROOKFIELD Corp /ON/	−9,030	4,379,938	$177,256,090
AAPL	Apple Inc.	−2,322	23,073	$5,855,696
FDX	Fedex Corp	−1,244	993	$353,686
VZ	Verizon Communications Inc	−1,060	4,800	$240,960
WFC	Wells Fargo & Company/Mn	−625	4,413	$351,318
BH-A	Biglari Holdings Inc.	−622	1,578	$2,749,964
MKL	Markel Group Inc.	−427	76,886	$147,165,178
GEV	GE Vernova Inc.	−87	901	$786,482
TRUP	Trupanion, Inc.	−85	40,695	$1,042,198
MSFT	Microsoft Corp	−47	6,079	$2,250,263
No positions match the current search.

New Positions

Positions the filer opened this quarter

No qualifying positions this quarter.

Sold Out

Positions the filer fully exited

1 positions

Ticker	Company	Shares	Value	Open
META	Meta Platforms, Inc.	336	$221,790
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

41 positions · $3,179,638,620 total · as of Mar 31, 2026

All sectors Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Technology

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
BRK-B	Berkshire Hathaway Inc Financial Services	Added	4,894,090	+281,582	$2,345,247,928	+1.2%	73.76%
BN	BROOKFIELD Corp /ON/ Financial Services	Reduced	4,379,938	-9,030	$177,256,090	−12.0%	5.57%
MKL	Markel Group Inc. Financial Services	Reduced	76,886	-427	$147,165,178	−11.5%	4.63%
AER	AerCap Holdings N.V. Industrials	Reduced	817,655	-9,707	$112,165,912	−5.7%	3.53%
FCNCA	First Citizens Bancshares Inc /De/ Financial Services	Added	44,068	+1,280	$83,053,196	−9.6%	2.61%
SIRI	Sirius Xm Holdings Inc. Communication Services	Added	2,942,595	+59,095	$67,915,092	+17.8%	2.14%
LKQ	Lkq Corp Consumer Cyclical	Added	1,917,106	+358,625	$56,305,403	+19.6%	1.77%
AMZN	Amazon Com Inc Consumer Cyclical	Added	204,087	+200,606	$42,505,199	+5190.1%	1.34%
DIS	Walt Disney Co Communication Services	Added	438,533	+1,892	$42,265,810	−14.9%	1.33%
HSY	Hershey Co Consumer Defensive	Added	192,310	+1,621	$39,979,325	+15.2%	1.26%
JEF	Jefferies Financial Group Inc. Financial Services	Added	680,171	+227,684	$28,070,657	+0.1%	0.88%
W	Wayfair Inc. Consumer Cyclical	Added	167,948	+756	$12,631,369	−24.8%	0.40%
AAPL	Apple Inc. Technology	Reduced	23,073	-2,322	$5,855,696	−15.2%	0.18%
BH-A	Biglari Holdings Inc. Consumer Cyclical	Reduced	1,578	-622	$2,749,964	−28.2%	0.09%
MSFT	Microsoft Corp Technology	Reduced	6,079	-47	$2,250,263	−24.0%	0.07%
AMGN	Amgen Inc Healthcare	Held	3,885	0	$1,366,937	+7.5%	0.04%
CAT	Caterpillar Inc Industrials	Held	1,717	0	$1,216,425	+23.7%	0.04%
TRUP	Trupanion, Inc. Financial Services	Reduced	40,695	-85	$1,042,198	−31.6%	0.03%
GS	Goldman Sachs Group Inc Financial Services	Held	1,230	0	$1,040,567	−3.8%	0.03%
TSLA	Tesla, Inc. Consumer Cyclical	Held	2,500	0	$929,375	−17.3%	0.03%
GEV	GE Vernova Inc. Industrials	Reduced	901	-87	$786,482	+21.8%	0.02%
GLW	Corning Inc /Ny Technology	Held	5,050	0	$686,648	+55.3%	0.02%
RTX	RTX Corp Industrials	Held	3,489	0	$673,028	+5.2%	0.02%
SPY	Spdr S&P 500 ETF Trust	Held	965	0	$627,578	−4.6%	0.02%
BAC	Bank Of America Corp /De/ Financial Services	Reduced	12,032	-67,705	$586,560	−86.6%	0.02%
BAM	Brookfield Asset Management Ltd. Financial Services	Added	12,954	+168	$575,805	−14.0%	0.02%
FRFHF	Fairfax Financial Holdings Ltd/ Can Financial Services	Added	219	+86	$372,738	+46.9%	0.01%
NVDA	Nvidia Corp Technology	Held	2,117	0	$369,204	−6.5%	0.01%
FAST	Fastenal Co Industrials	Held	7,920	0	$367,488	+15.6%	0.01%
FDX	Fedex Corp Industrials	Reduced	993	-1,244	$353,686	−45.3%	0.01%
WFC	Wells Fargo & Company/Mn Financial Services	Reduced	4,413	-625	$351,318	−25.2%	0.01%
UBER	Uber Technologies, Inc Technology	Held	4,860	0	$349,579	−12.0%	0.01%
COP	Conocophillips Energy	Held	2,534	0	$334,488	+41.0%	0.01%
UNH	Unitedhealth Group Inc Healthcare	Added	1,232	+513	$333,366	+40.5%	0.01%
BA	Boeing Co Industrials	Added	1,445	+200	$287,598	+6.4%	0.01%
ITW	Illinois Tool Works Inc Industrials	Held	1,100	0	$286,319	+5.7%	0.01%
JPM	Jpmorgan Chase & Co Financial Services	Added	956	+1	$281,216	−8.6%	0.01%
CVX	Chevron Corp Energy	Held	1,350	0	$279,315	+35.8%	0.01%
DGX	Quest Diagnostics Inc Healthcare	Held	1,300	0	$254,774	+12.9%	0.01%
VZ	Verizon Communications Inc Communication Services	Reduced	4,800	-1,060	$240,960	+1.0%	0.01%
CFG	Citizens Financial Group Inc/Ri Financial Services	Held	3,800	0	$227,886	+2.7%	0.01%