DOSSIER · 13F-HR · Q2 2026

Route One Investment Company, L.P.

$2.5B in tracked AUM across 20 positions as of Q2 2026.

RO
CIK 0001512171 · last filed Jun 30, 2026
Total AUM
$2.5B
as of Q2 2026
Holdings
20
positions
Whale Score
74
74
strong
Activity
no data
changes this Q
AI Analysis · Q2 2026

Portfolio Overview

Route One Investment Company, L.P. manages a highly concentrated portfolio valued at approximately $1.44 billion as of the report date September 30, 2025. The firm employs a high-conviction investment strategy, holding only 12 positions despite the substantial assets under management. This indicates a preference for selecting a limited number of specific winners rather than broad market diversification.

The quarter was characterized by significant capital deployment and ...

Key Holdings

The portfolio is dominated by a mix of technology, communication services, and healthcare giants, with a distinct focus on companies that hold strong market positions in their respective niches.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Quarter at a glance — Q2 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q2 2026.

#HoldingValueSharesWeight
01
POST
POST HLDGS INC
$260M3.0M10.5%
02
AMZN
AMAZON COM INC
$246M1.0M9.9%
03
GWRE
GUIDEWIRE SOFTWARE INC
$228M1.8M9.1%
04
GOOG
ALPHABET INC
$206M584K8.3%
05
UNH
UNITEDHEALTH GROUP INC
$203M488K8.1%
06
SCHW
SCHWAB CHARLES CORP
$202M2.2M8.1%
07
NYT
NEW YORK TIMES CO
$172M2.5M6.9%
08
KRC
KILROY RLTY CORP
$159M4.2M6.4%
09
TMO
THERMO FISHER SCIENTIFIC INC
$141M280K5.6%
10
MELI
MERCADOLIBRE INC
$111M66K4.5%

Filing history

2026Q2Jun 30
$2.5B 6.0%
20 positionsView →
2026Q1Mar 31
$2.3B 12.7%
19 positionsView →
2025Q4Dec 31
$2.7B 87.3%
16 positionsView →
2025Q3Sep 30
$1.4B 37.1%
12 positionsView →
2025Q2Jun 30
$2.3B 4.7%
15 positionsLocked
2025Q1Mar 31
$2.4B 6.3%
14 positionsLocked
2024Q4Dec 31
$2.6B 10.3%
14 positionsLocked
2024Q3Sep 30
$2.9B 1.2%
16 positionsLocked
2024Q2Jun 30
$2.9B 5.2%
17 positionsLocked
2024Q1Mar 31
$2.7B 44.5%
18 positionsLocked
2023Q4Dec 31
$4.9B 69.7%
17 positionsLocked
2023Q3Sep 30
$2.9B 2.8%
16 positionsLocked
Showing 12 of 60