Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Share classes (cover page of the 10-K filed 2026-08-17, as of 2026-08-07)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | SNDK · NASDAQ | 146,419,001 | 110,645,287 | 75.6% | 1,827 | 80004C200 |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (1 of 1 · 80004CAD3)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | HUNTINGTON NATIONAL BANK | 1 | — | $2 | — |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| Abigail P. Johnson | SCHEDULE 13G/A | 2026-08-06 | 2026-06-30 | 7,861,064.22 | 5.3% |
| FMR LLC | SCHEDULE 13G/A | 2026-08-06 | 2026-06-30 | 7,861,064.22 | 5.3% |
| Jane Street Capital, LLC | SCHEDULE 13G | 2026-08-05 | 2026-07-30 | 5,886,992 | 4% |
| Jane Street Global Trading, LLC | SCHEDULE 13G | 2026-08-05 | 2026-07-30 | 1,284,343 | 0.9% |
| JANE STREET GROUP, LLC | SCHEDULE 13G | 2026-08-05 | 2026-07-30 | 7,409,437 | 5% |
| Leonard Street Holdings, LP | SCHEDULE 13G | 2026-08-05 | 2026-07-30 | 238,102 | 0.2% |
| Western Digital Corporation | SCHEDULE 13G/A | 2026-05-15 | 2026-03-31 | 1,038,681 | 0.7% |
| Vanguard Capital Management | SCHEDULE 13G | 2026-04-30 | 2026-03-31 | 11,000,476 | 7.17% |
| The Vanguard Group | SCHEDULE 13G/A | 2026-03-27 | 2026-03-13 | 0 | 0% |
| BlackRock, Inc. | SCHEDULE 13G/A | 2026-01-21 | 2025-12-31 | 8,825,007 | 6% |
| DNB Asset Management AS | SCHEDULE 13G/A | 2025-11-10 | 2025-09-30 | 1,025,373 | 0.7% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.