Magnachip Semiconductor Corp
MX- Exchange
- NYSE
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001325702
In the last 90 days, Magnachip Semiconductor Corp insiders filed 1 open-market purchase and 0 sales; 75 institutions reported holding it in 13F filings for Q2 2026, worth $73.9M in total; superinvestors Oaktree Capital and Fairfax Financial hold it.
Holders of 5% or more of MX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Magnachip Semiconductor Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Byreforge LLC | 13D | 8.50%3.07M shares | New | Nov 20, 20251 filing | Nov 20, 2025 | SEC |
| Toro 18 Holdings LLC | 13G | 8.00%2.97M shares | New | Jan 2, 20251 filing | Jan 2, 2025 | SEC |
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
8 Schedule 13D and 13G filings on Magnachip Semiconductor Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 20, 20264:34 PM ET | Immersion Corpand 3 others | 13G/A | 4.10%1.50M shares | –Below 5% | Mar 20, 2026 | SEC |
| Feb 17, 20262:44 PM ET | Clearline Capital LPand 2 others | 13G/A | 4.10%1.46M shares | −1.00 ppfrom 5.10%Below 5% | Dec 31, 2025 | SEC |
| Feb 11, 202610:29 AM ET | Systematic Financial Management LP | 13G | 0.00%0 shares | −5.30 ppfrom 5.30%Below 5% | Dec 31, 2025 | SEC |
| Nov 20, 20254:29 PM ET | Byreforge LLCand 1 other | 13D | 8.50%3.07M shares | New | Nov 13, 2025 | SEC |
| Feb 13, 20255:07 PM ET | Systematic Financial Management LP | 13G | 5.30%1.97M shares | New | Dec 31, 2024 | SEC |
| Feb 12, 20254:28 PM ET | Clearline Capital LPand 2 others | 13G | 5.10%1.90M shares | New | Dec 31, 2024 | SEC |
| Jan 2, 20259:46 PM ET | Toro 18 Holdings LLCand 3 others | 13G | 8.00%2.97M shares | New | Dec 23, 2024 | SEC |
| Nov 15, 20241:44 PM ET | Alliancebernstein L.P. | 13G/A | 0.00%0 shares | –Below 5% | Sep 30, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Magnachip Semiconductor Corp shares.
No Form 144 notices for Magnachip Semiconductor Corp are on file.