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-Q filed 2026-08-13, as of 2026-08-12)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common Class A | SIDU · NASDAQ | 101,125,324 | 28,929,202 | 28.6% | 106 | 826165201 |
| Common Class B | not listed | 100,002 | — | — |
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 (6 of 6 · 826165102)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | Innovative Asset Advisors Group, LLC | 14,750 | — | $41K | NEW |
| 2 | Valeo Financial Advisors, LLC | 11,220 | — | $32K | NEW |
| 3 | Parallel Advisors, LLC | 4,314 | — | $12K | NEW |
| 4 | EverSource Wealth Advisors, LLC | 1,000 | — | $3K | — |
| 5 | HARBOUR INVESTMENTS, INC. | 600 | — | $2K | NEW |
| 6 | HOLLENCREST CAPITAL MANAGEMENT | 30 | — | $84 | NEW |
Exited since 2026-03-31 (1 filers; largest 1 shown)
| Advisory Services Network, LLC | −2,000 |
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 |
|---|---|---|---|---|---|
| Vanguard Capital Management | SCHEDULE 13G/A | 2026-07-31 | 2026-06-30 | 4,126,792 | 4.24% |
| BlackRock, Inc. | SCHEDULE 13G | 2026-07-30 | 2026-06-30 | 6,479,638 | 6.7% |
| Citadel Securities LLC | SCHEDULE 13G | 2026-04-28 | 2026-04-21 | 139,037 | 0.2% |
| Kenneth Griffin | SCHEDULE 13G | 2026-04-28 | 2026-04-21 | 3,210,428 | 4% |
| Citadel Advisors LLC | SCHEDULE 13G | 2026-04-28 | 2026-04-21 | 3,071,391 | 3.8% |
| Citadel GP LLC | SCHEDULE 13G | 2026-04-28 | 2026-04-21 | 3,071,391 | 3.8% |
| Citadel Securities GP LLC | SCHEDULE 13G | 2026-04-28 | 2026-04-21 | 139,037 | 0.2% |
| Citadel Securities Group LP | SCHEDULE 13G | 2026-04-28 | 2026-04-21 | 139,037 | 0.2% |
| Citadel Advisors Holdings LP | SCHEDULE 13G | 2026-04-28 | 2026-04-21 | 3,071,391 | 3.8% |
| CVI Investments, Inc. | SCHEDULE 13G/A | 2026-02-17 | 2025-12-31 | 214,935 | 0.3% |
| Heights Capital Management, Inc. | SCHEDULE 13G/A | 2026-02-17 | 2025-12-31 | 214,935 | 0.3% |
| Alto Opportunity Master Fund, SPC - Segregated Master Portfolio B | SCHEDULE 13G/A | 2025-05-14 | 2025-03-31 | 241,546 | 1.31% |
| Ayrton Capital LLC | SCHEDULE 13G/A | 2025-05-14 | 2025-03-31 | 241,546 | 1.31% |
| Waqas Khatri | SCHEDULE 13G/A | 2025-05-14 | 2025-03-31 | 241,546 | 1.31% |
| Empery Asset Management, LP | SCHEDULE 13G/A | 2025-04-24 | 2025-03-31 | 241,546 | 1.31% |
| Martin D. Hoe | SCHEDULE 13G/A | 2025-04-24 | 2025-03-31 | 241,546 | 1.31% |
| Ryan M. Lane | SCHEDULE 13G/A | 2025-04-24 | 2025-03-31 | 241,546 | 1.31% |
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.