Route One Investment Company, L.P.
13F Reported Value
ⓘ$2.3B
incl. option notional
Equity Holdings
ⓘ$2.3B
Option Notional
ⓘ$65.0M
$65.0M puts / $0 calls
Holdings
19
Latest Filing
2026-03-31
Filing Quarter
Q1 2026
Portfolio Overview
Route One Investment Company, L.P. disclosed 19 positions worth $2.3B in its Form 13F-HR for Q1 2026 — $2.3B in common stock plus $65.0M of put/call option positions (reported at underlying notional value, not premium at risk), led by $POST (Post Holdings, Inc.) at 12.8% of the equity portfolio, followed by $GWRE and $AMZN. During the quarter the fund opened 4 new positions and exited 1 — including a new stake in $MELI. The portfolio is most concentrated in Technology (30.0% of disclosed assets). All figures are sourced directly from Route One Investment Company, L.P.’s Form 13F-HR filing with the SEC under CIK 1512171.
AI Fund Analysis
Diversifying
Sector Allocation
AUM History
Top Equity Holdings by Value
Option Positions
13F rules report options at the value of the underlying shares (notional) — not the premium paid or capital at risk. Shown separately from the equity sleeve above.
Quarterly Activity — Q1 2026
Click any card to unlockTop Holdings
- 53.8#1,256
Quality
$291.7M2,950,568 sh - 66.2#532
Quality
$276.6M1,849,364 sh - 74.6#152
Quality
$215.0M1,032,200 sh - 71.3
Quality
$205.9M2,458,659 sh - 80.2
Quality
$197.7M689,080 sh - 77.2
Quality
$158.1M1,682,243 sh - 66.8
Quality
$144.2M532,875 sh - 63.7
Quality
$127.2M258,700 sh - —
Quality
$121.1M8,227,300 sh - 67.8
Quality
$114.2M4,049,563 sh
| Company | Quality | Value | Shares |
|---|---|---|---|
 Post Holdings, Inc.$POST | 53.8#1,256 | $291.7M | 2,950,568 |
 Guidewire Software, Inc.$GWRE | 66.2#532 | $276.6M | 1,849,364 |
 AMAZON COM INC$AMZN | 74.6#152 | $215.0M | 1,032,200 |
 NEW YORK TIMES CO$NYT | 71.3 | $205.9M | 2,458,659 |
 Alphabet Inc.$GOOGL | 80.2 | $197.7M | 689,080 |
 SCHWAB CHARLES CORP$SCHW | 77.2 | $158.1M | 1,682,243 |
 UNITEDHEALTH GROUP INC$UNH | 66.8 | $144.2M | 532,875 |
 THERMO FISHER SCIENTIFIC INC.$TMO | 63.7 | $127.2M | 258,700 |
 HERBALIFE LTD.$HLF | — | $121.1M | 8,227,300 |
 KILROY REALTY CORP$KRC | 67.8 | $114.2M | 4,049,563 |
Unlock AI quality scores for every holding
32-signal composite ranking on each of Route One Investment Company, L.P.'s 19 positions.
Showing top 10 of 19 holdings.
Sector Allocation
Technology
$685.8M
Consumer Staples
$466.9M
Consumer Discretionary
$292.4M
Financials
$210.9M
Communication Services
$205.9M
Real Estate
$186.3M
Healthcare
$144.2M
Energy
$91.8M
Full Holdings — Route One Investment Company, L.P. (Q1 2026)
All 19 disclosed positions from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.
| # | Ticker | Company | Value | Weight | QoQ | Quality |
|---|---|---|---|---|---|---|
| 1 | $POST | Post Holdings, Inc. | $291.7M | 12.8% | -6% | 53.8 |
| 2 | $GWRE | Guidewire Software, Inc. | $276.6M | 12.1% | +11% | 66.2 |
| 3 | $AMZN | AMAZON COM INC | $215.0M | 9.4% | -9% | 74.6 |
| 4 | $NYT | NEW YORK TIMES CO | $205.9M | 9.0% | -21% | 71.3 |
| 5 | $GOOGL | Alphabet Inc. | $197.7M | 8.7% | +0% | 80.2 |
| 6 | $SCHW | SCHWAB CHARLES CORP | $158.1M | 6.9% | -8% | 77.2 |
| 7 | $UNH | UNITEDHEALTH GROUP INC | $144.2M | 6.3% | +5% | 66.8 |
| 8 | $TMO | THERMO FISHER SCIENTIFIC INC. | $127.2M | 5.6% | -2% | 63.7 |
| 9 | $HLF | HERBALIFE LTD. | $121.1M | 5.3% | +1% | — |
| 10 | $KRC | KILROY REALTY CORP | $114.2M | 5.0% | +38% | 67.8 |
| 11 |  $VIST | Vista Energy, S.A.B. de C.V. | $91.8M | 4.0% | +19% | — |
| 12 |  $MELI | MERCADOLIBRE INC | $77.4M | 3.4% | NEW | 77.5 |
| 13 |  $ESS | ESSEX PROPERTY TRUST, INC. | $72.1M | 3.2% | -44% | 59.3 |
| 14 |  $SPYPUT | SPDR S&P 500 ETF TRUST | $65.0M | — | NEW | — |
| 15 |  $TBBB | BBB FOODS INC | $54.1M | 2.4% | +10% | — |
| 16 |  $PCOR | PROCORE TECHNOLOGIES, INC. | $52.3M | 2.3% | +0% | 51.8 |
| 17 |  $VEEV | VEEVA SYSTEMS INC | $32.0M | 1.4% | +17% | 77.8 |
| 18 |  $GGAL | GRUPO FINANCIERO GALICIA SA | $27.1M | 1.2% | NEW | — |
| 19 |  $BMA | Macro Bank Inc. | $25.7M | 1.1% | NEW | — |
New Positions (4)
Exited Positions (1)
Browse Top Institutional Investors
13F Pro tracks 8,700+ institutional investors filing 13F reports with the SEC.
to search all 8,700+ institutional filers.
Available Analysis
13F Pro tracks comprehensive institutional data for Route One Investment Company, L.P. including:
Track Route One Investment Company, L.P.'s Full Portfolio
See every holding, quarter-over-quarter changes, sector allocation, and accumulation patterns for Route One Investment Company, L.P. and 8,700+ other institutional investors.
Free tier includes full 13F search and fund profiles. Pro starts at $6.67/mo (billed annually).
AI-Powered Hedge Fund Analysis: Route One Investment Company, L.P.
13F Pro is an AI hedge fund tracker and stock research platform. For Route One Investment Company, L.P. (SEC CIK: 1512171), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.
Every holding in Route One Investment Company, L.P.'s portfolio is scored on a 32-signal AI quality ranking (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.