13F Portfolios

Route One Investment Company, L.P. 13F: Portfolio & Holdings

Route One Investment Company, L.P. (SEC CIK 0001512171) reported 19 equity positions with a combined market value of $2.4 billion, plus $74.7 million of listed put option notional in its most recent SEC Form 13F-HR filing (as of Q2 2026). The San Francisco-based hedge fund has Consumer Defensive as its largest sector at 19.2% of exposure.

Its largest holdings are Post Hldgs INC (POST) at 10.8%, Amazon.com INC (AMZN) at 10.2%, and Guidewire Software (GWRE) at 9.4%.

The largest exit was Essex Ppty Tr INC (ESS) . See the fund’s full Q2 2026 buys, sells, and portfolio changes →

Based on published SEC 13F filings, Route One Investment Company's closest peer funds by portfolio overlap are Mastercard Foundation Asset Management Corp (96.7%), Nellore Capital Management LLC (63.2%), and Hengistbury Investment Partners LLP (62.6%).

13F AUM
$2.4B
Equity Positions
19
Top-10 Concentration
79.8%
Largest Sector · 19.2%
Consumer Defensive
Longest-Held Position · 41 qtrs
GOOG
Median Holding Period
6.5 Qtrs

What are Route One Investment Company’s largest 13F holdings as of Q2 2026?

Largest 13F positions disclosed by Route One Investment Company, ranked by portfolio weight. Full multi-quarter history and the broader institutional holder base for each ticker linked per row.

Top 10 disclosed equity positions for Route One Investment Company in Q2 2026, ranked by portfolio weight. Share count and market value sourced from SEC Form 13F-HR filings.
# Issuer Ticker Sector Weight Position Value Detail
1 POST HLDGS INC POST Consumer Defensive 10.8% $260.4M Position History All Holders
2 AMAZON.COM INC AMZN Consumer Cyclical 10.2% $246.0M Position History All Holders
3 GUIDEWIRE SOFTWARE GWRE Technology 9.4% $227.6M Position History All Holders
4 ALPHABET INC GOOG Communication Services 8.5% $206.4M Position History All Holders
5 UNITEDHEALTH GROUP INC UNH Healthcare 8.4% $202.7M Position History All Holders
6 SCHWAB CHARLES CORP SCHW Financial Services 8.4% $202.1M Position History All Holders
7 NEW YORK TIMES CO MTN BE NYT Communication Services 7.1% $172.1M Position History All Holders
8 KILROY RLTY CORP KRC Real Estate 6.6% $159.2M Position History All Holders
9 THERMO FISHER SCIENTIFIC INC TMO Healthcare 5.8% $140.6M Position History All Holders
10 MERCADOLIBRE INC MELI Consumer Cyclical 4.6% $111.3M Position History All Holders

View Route One Investment Company's Q2 2026 portfolio changes and trading report →

Latest

Portfolio composition

Sectors, concentrations, and a tap-through treemap of every position in the fund's latest 13F.

Allocation by stock19 positions · click any tile for institutional holders
Allocation by sector8 sectors · same palette as the stock tiles
Allocation by optionOption Notional: $75M · Calls $0M · Puts $75M · 1 contracts

Holding period analytics

Distribution of holding periods for all 50 stocks the fund has ever held (up to selected quarter):

Which Funds Hold a Similar Portfolio to Route One Investment Company?

Ranked by percentage of the peer fund's 13F equity portfolio that overlaps with Route One Investment Company's positions in Q2 2026.

Funds with the most portfolio overlap with Route One Investment Company in Q2 2026, ranked by overlap percentage
# Fund Shared Positions Overlap %
1 Mastercard Foundation Asset Management Corp 1 96.7%
2 Nellore Capital Management LLC 4 63.2%
3 Hengistbury Investment Partners LLP 2 62.6%
4 Linonia Partnership LP 4 57.3%
5 Altarock Partners LP 3 48.2%
6 Foxhaven Asset Management, LP 4 45.2%
7 Cryder Capital Partners LLP 4 43.3%
8 Venator Management LLC 4 42.8%
9 Gavilan Investment Partners LLC 6 37.4%
10 Egerton Capital (UK) LLP 4 35.4%

How Has Route One Investment Company's AUM Changed Over Time?

Quarterly 13F-reported AUM for Route One Investment Company, derived from aggregate reported position market values disclosed to the U.S. SEC.

Methodology & FAQ

How We Track Route One Investment Company Holdings

Our data is systematically aggregated directly from quarterly Form 13F-HR disclosures submitted to the U.S. Securities and Exchange Commission (SEC).

  • Who must file: This dataset includes filings from U.S. institutional investment managers, hedge funds, mutual funds, university endowments, and family offices managing at least $100 million in Section 13(f) securities (including equities, options, convertibles, ETFs, and warrants).
  • What is included: By regulation, 13F filings include long positions in U.S. exchange-listed stocks, ETFs, shares of closed-end investment companies, and convertible debt, as defined in the SEC's official Section 13(f) securities list . For listed options (calls/puts) the reported value is based on the notional value.
  • Metric definition: “Portfolio Weight” shows how much of a fund's total reported 13F portfolio value (excluding listed options) is allocated to a specific position on the reporting date.
  • How to use this data: Quarter-over-quarter changes in shares and portfolio weight reflect a combination of active trading and market price movements. These are descriptive metrics of fund allocation, not explicit buy or sell signals.
What does Route One Investment Company's 13F filing disclose about their portfolio?

A Form 13F-HR filed by Route One Investment Company with the U.S. SEC discloses all long positions in Section 13(f) securities (U.S.-listed equities, ETFs, closed-end funds, and listed put/call options) held at quarter-end with a market value of at least $200,000 or 10,000 or more shares. Pactolio aggregates these filings to surface the manager’s reported portfolio weights, share counts, and quarter-over-quarter portfolio changes in a structured format. The filing represents a point-in-time snapshot of disclosed long-side exposure, not a real-time or complete view of the fund’s total book.

How do you measure conviction in Route One Investment Company's portfolio allocations?

Conviction is measured by portfolio weight, the percentage of Route One Investment Company’s total reported 13F market value allocated to a given position, rather than by absolute share count or dollar value alone. A position representing a disproportionately large share of the fund’s disclosed book signals high-conviction allocation, regardless of whether it ranks among the fund’s largest absolute holdings.

What is excluded from Route One Investment Company's 13F: short positions, swaps, and derivatives?

SEC Form 13F requires disclosure of long positions only. Specifically excluded are: short interest, total return swaps, credit default swaps, and all OTC derivatives, none of which appear in 13F filings regardless of position size. Listed put and call options must be disclosed but are excluded from portfolio weight calculations on this platform so that reported weights reflect direct equity exposure and remain comparable across filers. This means Route One Investment Company’s 13F represents the reported long book, which may differ materially from its net economic exposure.

When is Route One Investment Company's 13F data available, and how large is the reporting lag?

Investment managers must submit Form 13F within 45 calendar days of each quarter-end (the T+45 deadline). Pactolio ingests filings directly from SEC EDGAR as they are published, so managers who file early appear in our system before the deadline, while late filers are captured on their actual filing date. The quarter label shown at the top of this page reflects the most recently processed 13F cycle for Route One Investment Company. The inherent reporting lag means the data always reflects positions as of the prior quarter-end, not current holdings.

Who must file a Form 13F with the SEC, and does Route One Investment Company qualify?

Under SEC Rule 13f-1, any investment manager (including hedge funds, family offices, registered investment advisers, pension funds, and university endowments) that exercises investment discretion over $100 million or more in Section 13(f) securities at any point during a calendar year must file Form 13F for that year. Route One Investment Company meets this threshold, which is why its holdings are publicly disclosed and accessible on this platform. The $100 million threshold is evaluated on a rolling basis, meaning new filers can enter and existing filers can exit the disclosure regime as AUM crosses that boundary.