Company · Ownership research

SiteOne Landscape Supply, Inc. SITE

CIK 0001650729 · CUSIP 82982L103

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 82982L103 (SITE), not CUSIP 82982L903 (SITE), CUSIP 82982L953 (SITE), and does not merge CUSIPs.

This page lists the top 20 of 427 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$600.81M 4,513,643 shares	0.07%	+46.85K(+1.00%)Added	SEC filing ↗ May 15, 2026	▾
02	KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC CIK 1021223 · View history	$331.01M 2,486,718 shares	0.97%	-180.94K(-6.80%)Reduced	SEC filing ↗ May 14, 2026	▾
03	AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history	$292.79M 2,272,825 shares	0.13%	+1.58M(+228.70%)Added	SEC filing ↗ May 15, 2026	▾
04	WASATCH ADVISORS LP CIK 814133 · View history	$282.40M 2,121,524 shares	1.88%	+33.35K(+1.60%)Added	SEC filing ↗ Apr 21, 2026	▾
05	BlackRock, Inc. CIK 2012383 · View history	$274.98M 2,065,846 shares	0.00%	+83.60K(+4.20%)Added	SEC filing ↗ May 13, 2026	▾
06	BAMCO INC /NY/ CIK 1017918 · View history	$274.08M 2,059,076 shares	0.83%	+30.71K(+1.50%)Added	SEC filing ↗ May 15, 2026	▾
07	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$266.91M 2,005,149 shares	0.01%	—	SEC filing ↗ May 15, 2026	▾
08	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history	$235.30M 1,767,706 shares	0.01%	—	SEC filing ↗ May 8, 2026	▾
09	T. Rowe Price Investment Management, Inc. CIK 1897612 · View history	$225.47M 1,693,852 shares	0.16%	+1.64K(+0.10%)Added	SEC filing ↗ May 15, 2026	▾
10	Conestoga Capital Advisors, LLC CIK 1163744 · View history	$147.31M 1,106,701 shares	2.94%	+31.68K(+2.90%)Added	SEC filing ↗ Apr 24, 2026	▾
11	59 North Capital Management, LP CIK 1805589 · View history	$139.69M 1,049,440 shares	4.17%	-406.67K(-27.90%)Reduced	SEC filing ↗ May 15, 2026	▾
12	Capital World Investors CIK 1422849 · View history	$127.91M 960,952 shares	0.02%	-441.38K(-31.50%)Reduced	SEC filing ↗ May 13, 2026	▾
13	Artisan Partners Limited Partnership CIK 1466153 · View history	$111.41M 836,975 shares	0.18%	+393.71K(+88.80%)Added	SEC filing ↗ May 13, 2026	▾
14	Impax Asset Management Group plc CIK 1749768 · View history	$109.74M 824,430 shares	0.76%	-91.49K(-10.00%)Reduced	SEC filing ↗ May 12, 2026	▾
15	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$107.19M 805,336 shares	0.02%	+28.96K(+3.70%)Added	SEC filing ↗ May 7, 2026	▾
16	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$104.60M 785,645 shares	0.01%	+19.13K(+2.50%)Added	SEC filing ↗ May 15, 2026	▾
17	STATE STREET CORP CIK 93751 · View history	$102.61M 770,869 shares	0.00%	+13.06K(+1.70%)Added	SEC filing ↗ May 15, 2026	▾
18	UBS Group AG CIK 1610520 · View history	$96.16M 722,378 shares	0.02%	+498.57K(+222.80%)Added	SEC filing ↗ May 5, 2026	▾
19	Amundi CIK 1330387 · View history	$93.60M 703,767 shares	0.03%	-5.80K(-0.80%)Reduced	SEC filing ↗ May 18, 2026	▾
20	AMERIPRISE FINANCIAL INC CIK 820027 · Amended · View history	$89.25M 670,506 shares	0.02%	+110.52K(+19.70%)Added	SEC filing ↗ Jul 17, 2026	▾

Showing 20 / 427 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

427

Cancelled or null records excluded

Disclosed shares

49,181,600

Not deduplicated across managers

Disclosed value

$6.53B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

SiteOne Landscape Supply, Inc. · Q1 2026

Explore all 427 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.