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Filers›Asset Manager›Route One Investment Company, L.P.
DOSSIER · 13F-HR · Q1 2026

Route One Investment Company, L.P.

Route One Investment Company, L.P.'s asset manager based in Greenwich, CT — $2.3B in tracked AUM across 19 positions as of Q1 2026.

RO
Route One Investment Company, L.P.·Greenwich, CT·Asset Manager
CIK 0001512171 · last filed Mar 31, 2026
Total AUM
$2.3B
▼ 14.3%
vs prior
Holdings
19
—
positions
Whale Score
74
74
strong
Activity
—
no data
changes this Q
Top sector
Tech
12% weight
concentration
AI Analysis · Q1 2026 · Q1 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 ...

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
POST
POST HLDGS INC
$292M3.0M12.4%
02
GWRE
GUIDEWIRE SOFTWARE INC
$277M1.8M11.8%
03
AMZN
AMAZON COM INC
$215M1.0M9.2%
04
NYT
NEW YORK TIMES CO
$206M2.5M8.8%
05
GOOG
ALPHABET INC
$198M689K8.4%
06
SCHW
SCHWAB CHARLES CORP
$158M1.7M6.7%
07
UNH
UNITEDHEALTH GROUP INC
$144M533K6.1%
08
TMO
THERMO FISHER SCIENTIFIC INC
$127M259K5.4%
09
G4412G101
HERBALIFE LTD
$121M8.2M5.2%
10
KRC
KILROY RLTY CORP
$114M4.0M4.9%

Filing history

Filing history loading…
AI Agent · grounded in Route
haiku-4-5 · 19 positions indexed
Sector mix
  • Tech12%
  • Health Care23%
  • Communications13%
  • Industrials4%
  • Energy52%
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