DOSSIER · 13F-HR · Q1 2026
Data quality notice: this filer's reported share counts and dollar values are inconsistent with other institutions holding the same securities. Figures on this page reflect the filing as submitted to the SEC and may be unreliable.

Graham Holdings Co

$967K in tracked AUM across 6 positions as of Q1 2026.

GH
CIK 0000104889 · last filed Mar 31, 2026
Total AUM
$967K
as of Q1 2026
Holdings
6
positions
Whale Score
55
55
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026

Portfolio Overview

The SEC 13F filing for Graham Holdings Co (CIK: 0000104889) reveals a highly concentrated and actively managed portfolio as of the report date September 30, 2025. The total portfolio value stands at approximately $332,290, representing a dramatic decrease of 62.6% from the previous quarter's value of $889,510. This reduction is not solely attributable to market performance but indicates significant capital distribution or a strategic reallocation of assets outside the sco...

Key Holdings

The portfolio is dominated by a single massive position in Alphabet Inc. (GOOG), which accounts for $276,550 or 83.22% of the total assets. With 1.14 million shares, this position represents the core anchor of the strategy. The second largest holding is Cable One Inc. (CABO), valued at $32,300 (9.72% of the portfolio), consisting of 182,000 shares. The third position is PubMatic Inc., valued at $23,440 (7.06% of the portfolio), comprising 2.83 million shares. The stark contrast between the 83% weight in GOOG and the remaining positions indicates that while the firm maintains exposure to other equities, Alphabet is viewed as the primary investment vehicle within this specific portfolio segment.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q1 2026. Methodology

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
BRK/A
BERKSHIRE HATHAWAY INC DEL
$303K42231.3%
02
GOOG
ALPHABET INC
$282K984K29.2%
03
BRK/B
BERKSHIRE HATHAWAY INC DEL
$231K482K23.9%
04
MKL
MARKEL GROUP INC
$106K55K11.0%
05
PUBM
PUBMATIC INC
$28K3.4M2.9%
06
CABO
CABLE ONE INC
$17K182K1.7%

Filing history

2026Q1Mar 31
$967K 10.6%
6 positionsView →
2025Q4Dec 31
$1M 225.6%
6 positionsView →
2025Q3Sep 30
$332K 62.6%
3 positionsView →
2025Q2Jun 30
$890K 337.6%
5 positionsLocked
2025Q1Mar 31
$203K 76.2%
2 positionsLocked
2024Q4Dec 31
$852K 3.3%
5 positionsLocked
2024Q3Sep 30
$825K 1.5%
5 positionsLocked
2024Q2Jun 30
$813K 2.4%
5 positionsLocked
2024Q1Mar 31
$794K 15.1%
5 positionsLocked
2023Q4Dec 31
$690K 3.7%
5 positionsLocked
2023Q3Sep 30
$666K 2.6%
5 positionsLocked
2023Q2Jun 30
$649K 7.5%
5 positionsLocked
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