Silicon Motion Technology CORP
SIMO- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001329394
No open-market purchases or sales by Silicon Motion Technology CORP insiders were filed in the last 90 days; 385 institutions reported holding it in 13F filings for Q2 2026, worth $8.23B in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of SIMO
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Silicon Motion Technology CORP, largest stake first. The change is against the holder's previous filing.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on Silicon Motion Technology CORP, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Dec 5, 20252:03 PM ET | FMR LLCand 1 other | 13G/A | 10.00%13.6M shares | 0.00 ppfrom 10.00% | Nov 28, 2025 | SEC |
| Nov 5, 202511:44 AM ET | FMR LLCand 1 other | 13G/A | 10.00%13.6M shares | +1.90 ppfrom 8.10% | Sep 30, 2025 | SEC |
| Aug 6, 202512:14 PM ET | FMR LLCand 1 other | 13G/A | 8.10%11.0M shares | – | Jun 30, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Silicon Motion Technology CORP shares.
No Form 144 notices for Silicon Motion Technology CORP are on file.