Route One Investment Company, L.P.

San Francisco, CA · CIK 1512171 · 13F filing filed 2026-08-14

SEC-registered investment adviser since 2011 · partnership

Assets managed$4.7bn
Staff20 · 8 in investment roles
Main clients (by assets)Private funds 100%
Private funds3 (3 hedge) · $4.7bn gross assets
Form ADV · 2026-03-25SEC adviser record

Legal entityROUTE ONE INVESTMENT COMPANY, L.P. (US)

$2.4bn reported value +5.8% vs Q1 2026

19positions

79.8%in top 10

2 new 7 added 2 reduced 1 sold out vs Q1 2026

Options: 0 call positions (— notional), 1 put positions ($74.7m notional) – listed below, not included above.

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#	Security	Ticker	Shares	Value	% of portfolio	Change	Shares change
1	POST HLDGS INC COM POST	POST	2,950,568	$260.4m10.78%	10.78%	Unchanged
2	AMAZON COM INC COM AMZN	AMZN	1,032,200	$246.0m10.18%	10.18%	Unchanged
3	GUIDEWIRE SOFTWARE INC COM GWRE	GWRE	1,849,364	$227.6m9.42%	9.42%	Unchanged
4	ALPHABET INC CAP STK CL C GOOG	GOOG	584,050	$206.4m8.54%	8.54%	Reduced -105.0k	-105,030 -15.2%
5	UNITEDHEALTH GROUP INC COM UNH	UNH	487,725	$202.7m8.39%	8.39%	Reduced -45.1k	-45,150 -8.5%
6	SCHWAB CHARLES CORP COM SCHW	SCHW	2,189,893	$202.1m8.36%	8.36%	Added +507.6k	+507,650 30.2%
7	NEW YORK TIMES CO CL A NYT	NYT	2,458,659	$172.1m7.12%	7.12%	Unchanged
8	KILROY RLTY CORP COM KRC	KRC	4,248,213	$159.2m6.59%	6.59%	Added +198.7k	+198,650 4.9%
9	THERMO FISHER SCIENTIFIC INC COM TMO	TMO	280,400	$140.6m5.82%	5.82%	Added +21.7k	+21,700 8.4%
10	MERCADOLIBRE INC COM MELI	MELI	65,560	$111.3m4.61%	4.61%	Added +20.8k	+20,775 46.4%
11	HERBALIFE LTD COM SHS HLF	HLF	8,348,800	$109.8m4.54%	4.54%	Added +121.5k	+121,500 1.5%
12	BBB FOODS INC CL A COM TBBB	TBBB	2,224,201	$92.7m3.84%	3.84%	Added +694.9k	+694,905 45.4%
13	VISTA ENERGY S.A.B. DE C.V. SPONSORED ADS VIST	VIST	1,216,700	$77.6m3.21%	3.21%	Unchanged
14	VEEVA SYS INC CL A COM VEEV	VEEV	211,350	$37.5m1.55%	1.55%	Added +29.1k	+29,150 16.0%
15	PROCORE TECHNOLOGIES INC COM PCOR	PCOR	918,205	$37.3m1.54%	1.54%	Unchanged
16	VISA INC COM CL A V	V	106,700	$36.6m1.52%	1.52%	New
17	MASTERCARD INCORPORATED CL A MA	MA	70,500	$36.2m1.50%	1.50%	New
18	BANCO MACRO SA SPON ADR B BMA	BMA	332,111	$30.8m1.27%	1.27%	Unchanged
19	GRUPO FINANCIERO GALICIA S.A SPONSORED ADR GGAL	GGAL	579,350	$29.0m1.20%	1.20%	Unchanged

Sold out since Q1 2026

Security	Ticker	Shares held before	Value then
ESSEX PPTY TR INC ESS	ESS	297,912	$72.1m297.9k shares

Options (notional value)

Underlying	Ticker	Type	Shares controlled	Notional	Change
SPDR S&P 500 ETF TR SPY · Put	SPY	Put	100,000	$74.7m100.0k shares	Unchanged

Stakes above 5%

Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on.

Company	Ticker	Stake	Change	Schedule	Last filed
HERBALIFE LTD HLF · 13G · filed 2025-10-06	HLF	7.3%≈ $99.0m	+1.3 pts	13G	2025-10-06
POST HLDGS INC POST · 13G · filed 2026-05-14	POST	6.5%≈ $260.4m	+0.4 pts	13G	2026-05-14