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 2026-05-15, as of 2026-05-11)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | SMXT · NASDAQ | 56,906,572 | 1,793,885 | 3.2% | 19 | 83419H103 |
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 (19 of 19 · 83419H103)
change vs 2026-03-31| # | Filer | Shares | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | 651,394 | 1.14% | $227K | +21,473 (+3.4%) |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | 377,789 | 0.66% | $132K | -75,468 (-16.7%) |
| 3 | VANGUARD FIDUCIARY TRUST CO | 195,104 | 0.34% | $68K | — |
| 4 | NORTHERN TRUST CORP | 98,880 | 0.17% | $35K | -9,645 (-8.9%) |
| 5 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 82,726 | 0.15% | $29K | NEW |
| 6 | UBS Group AG | 79,581 | 0.14% | $28K | -89,373 (-52.9%) |
| 7 | JANE STREET GROUP, LLC | 58,733 | 0.10% | $20K | NEW |
| 8 | XTX Topco Ltd | 51,915 | 0.09% | $18K | -51,867 (-50.0%) |
| 9 | RENAISSANCE TECHNOLOGIES LLC | 50,083 | 0.09% | $17K | -7,400 (-12.9%) |
| 10 | HRT FINANCIAL LP | 39,722 | 0.07% | $13K | NEW |
| 11 | Qube Research & Technologies Ltd | 35,462 | 0.06% | $12K | NEW |
| 12 | Virtu Financial LLC | 23,774 | 0.04% | $8K | NEW |
| 13 | Engineers Gate Manager LP | 21,577 | 0.04% | $8K | — |
| 14 | Tower Research Capital LLC (TRC) | 13,687 | 0.02% | $5K | NEW |
| 15 | STATE STREET CORP | 12,500 | 0.02% | $4K | — |
| 16 | SBI Securities Co., Ltd. | 414 | 0.00% | $144 | +199 (+92.6%) |
| 17 | BNP PARIBAS FINANCIAL MARKETS | 400 | 0.00% | $140 | -29 (-6.8%) |
| 18 | JPMORGAN CHASE & CO | 75 | 0.00% | $25 | — |
| 19 | BlackRock, Inc. | 69 | 0.00% | $24 | -109,081 (-99.9%) |
Exited since 2026-03-31 (7 filers; largest 7 shown)
| TWO SIGMA INVESTMENTS, LP | −61,828 |
| TWO SIGMA SECURITIES, LLC | −33,522 |
| CITADEL ADVISORS LLC | −32,015 |
| Schonfeld Strategic Advisors LLC | −29,489 |
| FMR LLC | −878 |
| CWM, LLC | −58 |
| CITIGROUP INC | −1 |
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 |
|---|---|---|---|---|---|
| Ching Liu | SCHEDULE 13G | 2025-02-25 | 2024-02-27 | 3,426,398 | 7.4% |
| Hsu Bingwen David | SCHEDULE 13G | 2025-02-14 | 2024-02-27 | 5,460,730 | 11.7% |
| Yuan Simon | SCHEDULE 13G | 2025-02-11 | 2024-02-27 | 3,466,805 | 7.4% |
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.