Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
411 institutional managers reported holding SITE for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 53%. 71 opened new positions; 63 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| T. Rowe Price | 4.51M | 10.12% | $599.5M | added +1% | 2016 Q4 |
| Vanguard Group | 4.12M | 9.25% | $547.6M | added +2.8% | 2016 Q2 |
| Kayne Anderson Rudnick Investment Management LLC | 2.49M | 5.58% | $330.3M | trimmed -6.8% | 2016 Q4 |
| AQR Capital | 2.27M | 5.10% | $301.9M | added +228.7% | 2019 Q4 |
| Wasatch Advisors LP | 2.12M | 4.76% | $281.8M | added +1.6% | 2016 Q2 |
| BlackRock | 2.07M | 4.63% | $274.4M | added +4.2% | 2016 Q2 |
| Bamco INC /NY/ | 2.06M | 4.62% | $273.5M | added +1.5% | 2016 Q2 |
| T. Rowe Price Investment Management, INC. | 1.69M | 3.80% | $225.0M | added +241.7% | 2022 Q3 |
| Conestoga Capital Advisors, LLC | 1.11M | 2.48% | $147.0M | added +2.9% | 2016 Q3 |
| 59 North Capital Management, LP (focused) | 1.05M | 2.35% | $139.4M | trimmed -27.9% | 2025 Q3 |
| Capital Group (American Funds) | 961.0k | 2.15% | $127.6M | trimmed -31.5% | 2024 Q2 |
| UBS | 875.2k | 1.96% | $116.3M | added +137.5% | 2016 Q2 |
| Artisan Partners | 837.0k | 1.88% | $111.2M | added +88.8% | 2024 Q3 |
| Impax Asset Management Group plc | 824.4k | 1.85% | $109.5M | trimmed -10% | 2022 Q3 |
| Dimensional Fund Advisors | 805.3k | 1.81% | $107.0M | added +3.7% | 2017 Q3 |
| Geode Capital | 785.6k | 1.76% | $104.4M | added +2.5% | 2016 Q2 |
| State Street | 770.9k | 1.73% | $102.4M | added +1.7% | 2016 Q2 |
| Amundi | 703.8k | 1.58% | $93.5M | trimmed -0.8% | 2024 Q3 |
| Ameriprise Financial INC | 670.5k | 1.50% | $89.1M | added +19.7% | 2016 Q2 |
| Geneva Capital Management LLC | 627.3k | 1.41% | $83.3M | trimmed -7.5% | 2020 Q1 |
| Citadel Advisors | 594.7k | 1.33% | $79.0M | added +6.6% | 2016 Q2 |
| Charles Schwab Investment Management | 588.3k | 1.32% | $78.1M | added +4.7% | 2016 Q2 |
| Neuberger Berman Group LLC | 535.7k | 1.20% | $71.2M | trimmed -10.6% | 2017 Q3 |
| Schonfeld Strategic Advisors | 532.6k | 1.19% | $70.7M | added +480.4% | 2022 Q3 |
| Gw&k Investment Management, LLC | 506.8k | 1.14% | $67.3M | trimmed -0.7% | 2016 Q4 |
| Stephens Investment Management Group LLC | 436.0k | 0.98% | $57.9M | unchanged | 2016 Q4 |
| Interval Partners, LP | 432.2k | 0.97% | $57.4M | trimmed -0.6% | 2025 Q3 |
| Janus Henderson | 410.9k | 0.92% | $54.6M | added +3.6% | 2018 Q1 |
| American Century Companies INC | 392.9k | 0.88% | $52.2M | unchanged | 2016 Q2 |
| Millennium Management | 372.7k | 0.84% | $49.5M | trimmed -4.4% | 2020 Q2 |
| Wells Fargo & COMPANY/MN | 367.2k | 0.82% | $48.8M | trimmed -7.8% | 2016 Q2 |
| Brown Advisory INC | 352.7k | 0.79% | $46.8M | trimmed -11.9% | 2016 Q3 |
| Capital International Investors | 350.0k | 0.79% | $46.5M | opened | 2026 Q1 |
| Driehaus Capital Management LLC | 344.8k | 0.77% | $45.8M | added +41.1% | 2025 Q3 |
| ACK Asset Management LLC (focused) | 330.0k | 0.74% | $43.8M | unchanged | 2025 Q1 |
| Bank OF America CORP /DE/ | 280.2k | 0.63% | $37.2M | trimmed -27.5% | 2016 Q2 |
| Jane Street | 277.1k | 0.62% | $36.8M | added +46.5% | 2021 Q1 |
| SEI Investments CO | 254.9k | 0.57% | $33.9M | added +15.2% | 2016 Q4 |
| Handelsbanken Fonder AB | 252.5k | 0.57% | $33.5M | trimmed -31.8% | 2020 Q2 |
| Allspring Global Investments Holdings, LLC | 245.8k | 0.55% | $32.6M | added +12.3% | 2021 Q4 |
| Northern Trust | 244.6k | 0.55% | $32.5M | added +3.8% | 2016 Q2 |
| Goldman Sachs | 244.0k | 0.55% | $32.4M | added +144.7% | 2016 Q2 |
| Gilder Gagnon Howe & CO LLC | 240.4k | 0.54% | $31.9M | trimmed -15.6% | 2016 Q2 |
| Argent Capital Management LLC | 239.8k | 0.54% | $31.8M | opened | 2026 Q1 |
| Raymond James Financial INC | 236.6k | 0.53% | $31.4M | trimmed -6.5% | 2016 Q4 |
| DF Dent & CO INC | 236.1k | 0.53% | $31.4M | trimmed -33.8% | 2017 Q1 |
| Envestnet Asset Management INC | 231.5k | 0.52% | $30.8M | added +2.8% | 2016 Q3 |
| Voya Investment Management LLC | 219.6k | 0.49% | $29.2M | trimmed -14.5% | 2016 Q2 |
| Morgan Stanley | 217.9k | 0.49% | $28.9M | trimmed -11.4% | 2016 Q2 |
| BLI - Banque de Luxembourg Investments | 216.9k | 0.49% | $28.8M | unchanged | 2024 Q4 |
Largest 50 of 411 shown; the full ranked, searchable register is at boothcheck.com/holders/SITE. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.