DOSSIER · 13F-HR · Q1 2026

KAHN BROTHERS GROUP INC

$564M in tracked AUM across 48 positions as of Q1 2026.

KB
CIK 0001039565 · last filed Mar 31, 2026
Total AUM
$564M
as of Q1 2026
Holdings
48
positions
Whale Score
68
68
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026

Kahn Brothers Group runs one of the most recognizably value-oriented books in the 13F universe — low-conviction breadth is not the goal here, and the March 2026 filing is no exception. The $564 million portfolio is anchored by Citigroup at 17 percent of gross assets, with Bayer AG, Flagstar Financial, Disney, Alphabet Class C and Seaboard filling out the top tier in a pattern that has not changed fundamentally across multiple recent quarters. What IS new is the book's most aggressive single-name move: the bond insurer MBIA was doubled from $7.4 million to $12.2 million inside three months. Simultaneously, Merck — previously the fourth-largest position at $45 million — was cut nearly in half to $27 million, and BP was reduced from $36 million to $29 million. The net is a concentrated value manager making within-sector tactical calls inside a book whose top-line architecture has not changed.

The most decisive Q/Q move is MBIA (MBI), the monoline bond insurer that was central to the 2008 financial crisis and has spent the subsequent 18 years running off legacy exposure while rebuilding its balance sheet. The position grew from $7.4 million to $12.2 million — a 100-percent increase in absolute dollars inside a single quarter. That is a meaningful conviction escalation for a $564 million book, and it is the most explicit special-situations call in the filing. The manager is not buying MBIA as a general financials bet; it is buying a name with a defined legacy tail risk and a shrinking book of new business whose run-off economics may be more valuable than the market currently discounts. Around the same time, Assured Guaranty — the better-capitalized, better-franchised peer — was sold. That is a deliberate choice to concentrate the monoline-insurance sleeve inside one name rather than hold both, and it suggests Kahn views MBIA's specific setup as offering better risk-reward than the sector as a whole.

The second-most decisive move is Merck's 47% cut from $45 million to $27 million. Merck had been the fourth-largest position at year-end, sitting just behind Disney and ahead of Alphabet. Reducing it by nearly half while simultaneously increasing Organon (OGN) from $26 million to $33 million reads as an explicit within-sector rotation: out of a legacy pharmaceutical company facing patent cliffs and pipeline disappointment, into a newer-generation women's-health spinoff that sits in a narrower therapeutic segment. Both are healthcare names, so the sector allocation looks stable at the surface, but the manager is clearly distinguishing between pharma businesses that have secular growth optionality and those that do not.

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
C
Citigroup Inc
$95M841K16.9%
02
072730302
Bayer AG Spons ADR
$75M6.5M13.3%
03
FLG
Flagstar Financial, Inc.
$54M4.1M9.5%
04
DIS
Walt Disney
$37M379K6.5%
05
GOOG
Alphabet Inc Class C
$35M122K6.2%
06
SEB
Seaboard Corp
$33M6K5.9%
07
OGN
Organon & Co
$33M5.5M5.9%
08
BP
BP PLC
$29M622K5.2%
09
MRK
Merck & Co. Inc.
$27M227K4.8%
10
Z
Zillow Group
$23M545K4.0%

Filing history

2026Q1Mar 31
$564M 0.1%
48 positionsView →
2025Q4Dec 31
$565M 6.2%
54 positionsView →
2025Q3Sep 30
$532M 6.8%
53 positionsView →
2025Q2Jun 30
$498M 0.7%
51 positionsLocked
2025Q1Mar 31
$494M 7.4%
55 positionsLocked
2024Q4Dec 31
$460M 20.7%
52 positionsLocked
2024Q3Sep 30
$581M 2.4%
53 positionsLocked
2024Q2Jun 30
$595M 11.8%
52 positionsLocked
2024Q1Mar 31
$674M 6.2%
53 positionsLocked
2023Q4Dec 31
$635M 1.0%
43 positionsLocked
2023Q3Sep 30
$641M 6.0%
43 positionsLocked
2023Q2Jun 30
$682M 1.8%
43 positionsLocked
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