Who owns SiteOne Landscape Supply (SITE)
Which tracked institutional funds hold SITE, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SITE company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
SITE’s largest tracked holder by dollar value, PRICE T ROWE ASSOCIATES INC /MD/, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SITE divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, we do not read how tracked institutions changed their SITE positions: many holders could not be matched across the two filings, most often because the security’s identifier changed and our mapping is incomplete, or because funds are still filing for the newer quarter. Over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 4,474,072 | $512M | 10.9% | 2026-Q2 |
| 59 North Capital Management, LP added | 2,057,212 | $235M | 5.0% | 2026-Q2 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC trimmed | 2,048,143 | $234M | 5.0% | 2026-Q2 |
| BAMCO INC /NY/ trimmed | 2,028,799 | $232M | 4.9% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 2,004,438 | $229M | 4.9% | 2026-Q2 |
| BlackRock, Inc. added | 1,934,754 | $221M | 4.7% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 1,727,897 | $198M | 4.2% | 2026-Q2 |
| WASATCH ADVISORS LP trimmed | 1,269,677 | $145M | 3.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 1,234,583 | $140M | 3.0% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,062,370 | $122M | 2.6% | 2026-Q2 |
| Capital World Investors added | 991,818 | $113M | 2.4% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 983,646 | $113M | 2.4% | 2026-Q2 |
| Conestoga Capital Advisors, LLC trimmed | 960,286 | $110M | 2.3% | 2026-Q2 |
| Impax Asset Management Group plc added | 836,410 | $96M | 2.0% | 2026-Q2 |
| STATE STREET CORP added | 793,748 | $91M | 1.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 756,823 | $87M | 1.8% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 711,289 | $81M | 1.7% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 630,595 | $72M | 1.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 586,976 | $67M | 1.4% | 2026-Q2 |
| Jupiter Topco LLC new | 520,229 | $60M | 1.3% | 2026-Q2 |
| Stephens Investment Management Group LLC added | 502,344 | $57M | 1.2% | 2026-Q2 |
| GENEVA CAPITAL MANAGEMENT LLC trimmed | 481,402 | $55M | 1.2% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 456,856 | $52M | 1.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 440,385 | $50M | 1.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 428,517 | $49M | 1.0% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 403,430 | $46M | 1.0% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 402,979 | $46M | 1.0% | 2026-Q2 |
| UBS Group AG trimmed | 383,667 | $44M | 0.9% | 2026-Q2 |
| BROWN ADVISORY INC added | 363,716 | $42M | 0.9% | 2026-Q2 |
| Capital International Investors added | 360,721 | $41M | 0.9% | 2026-Q2 |
| ACK Asset Management LLC | 330,000 | $38M | 0.8% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 327,030 | $37M | 0.8% | 2026-Q2 |
| Southpoint Capital Advisors LP trimmed | 300,000 | $34M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 280,522 | $32M | 0.7% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 263,320 | $30M | 0.6% | 2026-Q2 |
| MORGAN STANLEY added | 259,787 | $30M | 0.6% | 2026-Q2 |
| GILDER GAGNON HOWE & CO LLC added | 255,521 | $29M | 0.6% | 2026-Q2 |
| NORTHERN TRUST CORP added | 245,162 | $28M | 0.6% | 2026-Q2 |
| DF DENT & CO INC trimmed | 219,910 | $25M | 0.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 215,835 | $25M | 0.5% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 211,130 | $23M | 0.5% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 204,231 | $23M | 0.5% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 200,514 | $23M | 0.5% | 2026-Q2 |
| Artisan Partners Limited Partnership trimmed | 185,936 | $21M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 184,612 | $21M | 0.5% | 2026-Q2 |
| Bank of New York Mellon Corp added | 182,328 | $21M | 0.4% | 2026-Q2 |
| BLI - Banque de Luxembourg Investments trimmed | 180,500 | $21M | 0.4% | 2026-Q2 |
| Nuveen, LLC added | 177,871 | $20M | 0.4% | 2026-Q2 |
| Fisher Asset Management, LLC trimmed | 176,357 | $20M | 0.4% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 171,705 | $20M | 0.4% | 2026-Q2 |
| Rivermont Capital Management LP added | 171,191 | $20M | 0.4% | 2026-Q2 |
| SEB Asset Management AB added | 170,000 | $19M | 0.4% | 2026-Q2 |
| NORGES BANK added | 152,867 | $17M | 0.4% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 152,817 | $17M | 0.4% | 2026-Q2 |
| Fenimore Asset Management Inc added | 150,671 | $17M | 0.4% | 2026-Q2 |
| Kinetic Partners Management, LP added | 146,101 | $17M | 0.4% | 2026-Q2 |
| Harvey Partners, LLC new | 144,059 | $16M | 0.4% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP new | 143,798 | $16M | 0.4% | 2026-Q2 |
| Pembroke Management, LTD trimmed | 135,965 | $16M | 0.3% | 2026-Q2 |
| FIFTH THIRD BANCORP trimmed | 135,240 | $15M | 0.3% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 129,241 | $15M | 0.3% | 2026-Q2 |
| SummitTX Capital, L.P. added | 123,556 | $14M | 0.3% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 122,983 | $14M | 0.3% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 122,075 | $14M | 0.3% | 2026-Q2 |
| CITIGROUP INC trimmed | 120,845 | $14M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 120,000 | $14M | 0.3% | 2026-Q2 |
| Man Group plc added | 115,803 | $13M | 0.3% | 2026-Q2 |
| WCM INVESTMENT MANAGEMENT, LLC trimmed | 108,580 | $12M | 0.3% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP trimmed | 100,885 | $12M | 0.3% | 2026-Q2 |
| Zuckerman Investment Group, LLC added | 100,401 | $11M | 0.2% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 99,100 | $11M | 0.2% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 96,872 | $11M | 0.2% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 91,242 | $10M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 88,900 | $10M | 0.2% | 2026-Q2 |
| FRED ALGER MANAGEMENT, LLC trimmed | 86,350 | $10M | 0.2% | 2026-Q2 |
| USS Investment Management Ltd new | 84,508 | $10M | 0.2% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 82,400 | $9M | 0.2% | 2026-Q2 |
| Rockefeller Capital Management L.P. trimmed | 78,786 | $9M | 0.2% | 2026-Q2 |
| BARCLAYS PLC added | 77,841 | $9M | 0.2% | 2026-Q2 |
| McCollum Christoferson Group LLC trimmed | 76,324 | $5M | 0.1% | 2026-Q2 |
| 12th Street Asset Management Company, LLC new | 75,475 | $9M | 0.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 74,100 | $8M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 69,120 | $8M | 0.2% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 68,451 | $8M | 0.2% | 2026-Q2 |
| NATIXIS added | 67,829 | $8M | 0.2% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 67,818 | $8M | 0.2% | 2026-Q2 |
| WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD added | 65,546 | $7M | 0.2% | 2026-Q2 |
| Squarepoint Ops LLC added | 60,982 | $7M | 0.1% | 2026-Q2 |
| Bridge City Capital, LLC added | 59,835 | $7M | 0.1% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL new | 57,468 | $7M | 0.1% | 2026-Q2 |
| Jain Global LLC added | 56,174 | $6M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 53,739 | $6M | 0.1% | 2026-Q2 |
| Crown Oak Advisors, LLC trimmed | 51,363 | $6M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 51,233 | $6M | 0.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 51,175 | $6M | 0.1% | 2026-Q2 |
| EULAV Asset Management | 51,100 | $6M | 0.1% | 2026-Q2 |
| Cerity Partners LLC trimmed | 50,517 | $6M | 0.1% | 2026-Q2 |
| NICHOLAS COMPANY, INC. added | 47,870 | $5M | 0.1% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND new | 46,000 | $5M | 0.1% | 2026-Q2 |
| Illinois Municipal Retirement Fund added | 45,648 | $5M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.