Cook & Bynum Capital Management, LLC

Fundamental diversified ★Signal CIK 1542280
Long book
$124.2M
Q1 2026
Positions
6
Top-10 weight
100%
concentration
Last quarter
+13.8%
SPY +14.8%
Turnover
0%
of book per quarter

Strategy in plain words

auto-generated from filings

Cook & Bynum Capital Management, LLC is a diversified fundamental manager, running a $124.2M US long book across 6 positions.

The portfolio is extremely concentrated — the top 10 positions are almost the whole book. The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: BERKSHIRE HATHAWAY INC-CL B, ANHEUSER-BUSCH INBEV-SPN ADR, FOMENTO ECONOMICO MEX-SP ADR, LIBERTY LATIN AMERIC-CL C, AMBEV SA-ADR.

Over the last 9 quarters its long book ran on average 1.5pp per quarter behind the S&P 500, beating the index in 2 of 9 quarters. We rate its filings as signal-bearing: position changes reflect genuine views.

Implied long-book return vs S&P 500

methodology: positions priced quarterly, no shorts/options
Fund long book S&P 500
Q1 2024
+0.7%
Q2 2024
+5.7%
Q3 2024
-15.6%
Q4 2024
+15.0%
Q1 2025
-0.2%
Q2 2025
+2.8%
Q3 2025
+0.5%
Q4 2025
+3.8%
Q1 2026
+13.8%

Sector allocation

Financials
80%
Communications
20%

Long book by quarter

$131.2M
Q1 2024
$131.4M
Q2 2024
$138.6M
Q3 2024
$113.1M
Q4 2024
$128.1M
Q1 2025
$126.5M
Q2 2025
$125.2M
Q3 2025
$119.7M
Q4 2025
$124.2M
Q1 2026

What does Cook & own?

Q1 2026 13F
CompanySectorSharesValue% of bookChange
BRK/B BERKSHIRE HATHAWAY INC-CL BFinancials110.7K$53.0M42.7%Held
LILAK LIBERTY LATIN AMERIC-CL CCommunications1.4M$12.0M9.7%Held
LILA LIBERTY LATIN AMERIC-CL ACommunications141.7K$1.2M1.0%Held

13F filing history

PeriodFormFiledEntriesReported valueFlagsSource
Q1 202613F-HRMay 15, 20266$124.2M canonicalSEC ↗
Q4 202513F-HRFeb 17, 20266$119.7M canonicalSEC ↗
Q3 202513F-HRNov 14, 20256$125.2M canonicalSEC ↗
Q2 202513F-HRAug 14, 20256$126.5M canonicalSEC ↗
Q1 202513F-HRMay 15, 20256$128.1M canonicalSEC ↗
Q4 202413F-HRFeb 14, 20257$154.1M canonicalSEC ↗
Q3 202413F-HRNov 14, 20245$138.6M canonicalSEC ↗
Q2 202413F-HRAug 14, 20245$131.4M canonicalSEC ↗
Q1 202413F-HRMay 15, 20245$131.2M canonicalSEC ↗