Route One Investment Company, L.P.

In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 14, 2025), Route One Investment Company, L.P. reported 13 stock positions worth $2.5 billion. Its top holding was Post (POST) at 19.0% of the portfolio, followed by Guidewire Software (GWRE, 15.1%) and Amazon.com (AMZN, 12.5%). Compared with Q3 2024, it sold out of 2, added to 1 and reduced 8. The biggest buy was Thermo Fisher Scientific (TMO, shares +10%) and the biggest sale Guidewire Software (GWRE, shares −21%).

Most Recent 13F
Q2 2026
Location
San Francisco, CA
CIK
0001512171
Portfolio Value
$2.5B (Q4 2024)
SEC Filing
0000935836-25-000177 ↗ filed Feb 14, 2025

Holdings Value

0$1.0B$2.0B$3.0B Q1 2024: $2.5B Q1 2024 Q2 2024: $2.6B Q2 2024 Q3 2024: $2.8B Q3 2024 Q4 2024: $2.5B $2.5B Q4 2024 Q1 2025: $2.3B Q1 2025 Q2 2025: $2.2B Q2 2025 Q3 2025: $2.5B Q3 2025 Q4 2025: $2.4B Q4 2025 Q1 2026: $2.3B Q1 2026 Q2 2026: $2.4B Q2 2026

Holdings 13 stocks · $2.5B
POST Post Holdings Inc. filed as POST HLDGS INC 19.01% 4,174,539 $477.8M Reduce -4.5%
GWRE Guidewire Software Inc. 15.10% 2,251,430 $379.5M Reduce -21.4%
AMZN Amazon.com Inc. 12.52% 1,434,800 $314.8M Reduce -6.9%
SCHW Schwab (charles) Corp. 9.64% 3,273,943 $242.3M Reduce -11.8%
UNH Unitedhealth Group Inc. 8.77% 435,600 $220.4M No change
NYT New York Times Co. Class A 7.86% 3,794,259 $197.5M No change
CRM Salesforce Inc. 7.14% 537,100 $179.6M No change
GOOG Alphabet Inc. Class C 6.44% 850,380 $161.9M Reduce -17.1%
TMO Thermo Fisher Scientific Inc. 4.81% 232,430 $120.9M Add +10.2%
AGRO Adecoagro SA 3.34% 8,900,438 $83.9M Reduce -1.6%
GOOGL Alphabet Inc. Class A 2.61% 346,960 $65.7M Reduce -15.6%
PCOR Procore Technologies Inc. 1.66% 557,050 $41.7M No change
HLF Herbalife Ltd. 1.10% 4,120,884 $27.6M Reduce -52.3%
Other holdings (1): bonds, preferreds, convertibles and warrants · $46.2M (not counted above)
SecurityClassShares / PrincipalValueChange
HERBALIFE LTD (HLF 4.25 06/15/28) NOTE 4.250% 6/1 · principal 59,525,000$46.2MNew

Total filed on the 13F, all lines: $2.6B.

Portfolio Sells Q3 2024 → Q4 2024
GWRE Guidewire Software Inc. Reduce -21.4% 15.10% −3.76
LW Lamb Weston Holdings Inc. Sold out 0.00% −1.33
HLF Herbalife Ltd. Reduce -52.3% 1.10% −1.14
AGRO Adecoagro SA Reduce -1.6% 3.34% −0.26
MTN Vail Resorts Inc. Sold out 0.00% −0.17
GOOGL Alphabet Inc. Class A Reduce -15.6% 2.61% +0.16
GOOG Alphabet Inc. Class C Reduce -17.1% 6.44% +0.27
POST Post Holdings Inc. Reduce -4.5% 19.01% +0.80
SCHW Schwab (charles) Corp. Reduce -11.8% 9.64% +0.98
AMZN Amazon.com Inc. Reduce -6.9% 12.52% +2.20

Portfolio Buys Q3 2024 → Q4 2024
TMO Thermo Fisher Scientific Inc. Add +10.2% 4.81% +0.12

Options Activity Q3 2024 → Q4 2024
QQQ Invesco QQQ Trust Series 1 put Sold out 150,000 $73.2Mbefore exit

Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.

Notes & Other Activity Q3 2024 → Q4 2024
HERBALIFE LTD (HLF 4.25 06/15/28) NOTE 4.250% 6/1 · principal New 59,525,000 $46.2M

Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 19$2.4BPOST, AMZN, GWRE, GOOG, UNH
Q1 2026 18$2.3BPOST, GWRE, AMZN, NYT, GOOG
Q4 2025 15$2.4BGWRE, POST, AMZN, GOOG, NYT
Q3 2025 16$2.5BGWRE, POST, AMZN, SCHW, NYT
Q2 2025 14$2.2BGWRE, POST, AMZN, SCHW, NYT
Q1 2025 13$2.3BPOST, GWRE, SCHW, AMZN, UNH
Q4 2024 13$2.5BPOST, GWRE, AMZN, SCHW, UNH
Q3 2024 15$2.8BGWRE, POST, AMZN, UNH, SCHW
Q2 2024 15$2.6BPOST, GWRE, AMZN, UNH, GOOG
Q1 2024 16$2.5BPOST, GWRE, AMZN, UNH, CRM