DOSSIER · 13F-HR · Q1 2026

SOUTHEASTERN ASSET MANAGEMENT INC/TN/

$2.0B in tracked AUM across 84 positions as of Q1 2026.

SA
CIK 0000807985 · last filed Mar 31, 2026
Total AUM
$2.0B
as of Q1 2026
Holdings
84
positions
Whale Score
63
63
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026

Comprehensive Analysis of SEC 13F Filing: Southeastern Asset Management Inc/TN/

1. Portfolio Overview

The filing for the period ending September 30, 2025, reveals a significant contraction in assets under management for Southeastern Asset Management. The total portfolio value decreased sharply by 50.2%, dropping from $1.98 billion in the previous quarter to $987.2 million. This reduction is not solely attributable to market performance but is largely driven by a substantial shift in po...

2. Key Holdings

The portfolio is anchored by a heavy weighting in CNX Resources Corp (CNX), which occupies the top position at $152.65 million, representing 15.46% of the portfolio. This significant allocation underscores a strong conviction in the energy sector, specifically natural gas. The second and third largest holdings, IAC Inc (IAC) at 9.55% and FedEx Corp (FDX) at 8.94%, respectively, demonstrate a tilt toward undervalued or turnaround situations within technology and industrials.

Other notable concentrations include Regeneron Pharmaceuticals (REGN) at 8.24% and Avantor Inc (AVTR) at 6.51%. The presence of smaller-capitalization or less liquid names such as ACM Research (ACMR) and SharkNinja in the top ten further reinforces the manager's willingness to look beyond large-cap indexes for value. The portfolio's top five holdings alone comprise nearly 49% of the total assets, indicating that performance will be heavily dependent on the specific outcomes of these select investments.

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
RYN
RAYONIER INC
$222M10.8M10.9%
02
MAT
MATTEL INC
$186M12.8M9.2%
03
IAC
IAC INC
$161M4.0M7.9%
04
CNX
CNX RES CORP
$155M4.0M7.6%
05
ACI
ALBERTSONS COS INC
$126M7.4M6.2%
06
REGN
REGENERON PHARMACEUTICALS
$101M131K5.0%
07
KHC
KRAFT HEINZ CO
$89M3.9M4.4%
08
FDX
FEDEX CORP
$88M247K4.3%
09
FBIN
FORTUNE BRANDS INNOVATIONS I
$84M2.2M4.1%
10
MGM
MGM RESORTS INTERNATIONAL
$62M1.7M3.0%

Filing history

2026Q1Mar 31
$2.0B 9.5%
84 positionsView →
2025Q4Dec 31
$2.2B 127.4%
92 positionsView →
2025Q3Sep 30
$987M 50.2%
44 positionsView →
2025Q2Jun 30
$2.0B 5.7%
94 positionsLocked
2025Q1Mar 31
$1.9B 11.4%
85 positionsLocked
2024Q4Dec 31
$2.1B 0.1%
88 positionsLocked
2024Q3Sep 30
$2.1B 7.6%
92 positionsLocked
2024Q2Jun 30
$2.3B 11.8%
94 positionsLocked
2024Q1Mar 31
$2.6B 0.1%
89 positionsLocked
2023Q4Dec 31
$2.6B 3.7%
90 positionsLocked
2023Q3Sep 30
$2.7B 4.8%
94 positionsLocked
2023Q2Jun 30
$2.8B 4.2%
94 positionsLocked
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