MX Magnachip Semiconductor Corporation
Magnachip Semiconductor Corporation (MX) Institutional Ownership
What the institutions did with MX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| MARSHALL WACE, LLP | 1.6M | 10.3% |
| FourWorld Capital Management LLC | 1.6M | 10.2% |
| TWO SIGMA INVESTMENTS, LP | 1.5M | 9.6% |
| OAKTREE CAPITAL MANAGEMENT LP | 1.5M | 9.6% |
| D. E. Shaw & Co., Inc. | 1.4M | 8.9% |
| ACADIAN ASSET MANAGEMENT LLC | 963.8K | 6.2% |
| RENAISSANCE TECHNOLOGIES LLC | 661.6K | 4.2% |
| MORGAN STANLEY | 544.1K | 3.5% |
| DIMENSIONAL FUND ADVISORS LP | 475.6K | 3.0% |
| Connor, Clark & Lunn Investment Management Ltd. | 412.8K | 2.6% |
| Qube Research & Technologies Ltd | 382.4K | 2.4% |
| Trexquant Investment LP | 285.9K | 1.8% |
| BNP PARIBAS FINANCIAL MARKETS | 265.1K | 1.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 239.7K | 1.5% |
| MILLENNIUM MANAGEMENT LLC | 236.4K | 1.5% |
| XTX Topco Ltd | 222.2K | 1.4% |
| JANE STREET GROUP, LLC | 215.9K | 1.4% |
| ODDO BHF ASSET MANAGEMENT SAS | 215.1K | 1.4% |
| BOOTHBAY FUND MANAGEMENT, LLC | 200.1K | 1.3% |
| GSA CAPITAL PARTNERS LLP | 200.0K | 1.3% |
| Caption Management, LLC | 160.1K | 1.0% |
| Steward Partners Investment Advisory, LLC | 153.3K | 1.0% |
| BLUEFIN CAPITAL MANAGEMENT, LLC | 147.7K | 0.9% |
| GROUP ONE TRADING LLC | 117.8K | 0.8% |
| Virtu Financial LLC | 115.0K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| AMERIPRISE FINANCIAL INC | Sold Out | 1.6M | 0 | -1.6M |
| IMMERSION CORP | Sold Out | 1.4M | 0 | -1.4M |
| OAKTREE CAPITAL MANAGEMENT LP | Reduced | 2.8M | 1.5M | -1.3M |
| D. E. Shaw & Co., Inc. | Increased | 159.6K | 1.4M | +1.2M |
| Clearline Capital LP | Sold Out | 1.1M | 0 | -1.1M |
| TWO SIGMA INVESTMENTS, LP | Increased | 571.8K | 1.5M | +929.6K |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC | Sold Out | 744.0K | 0 | -744.0K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 35.5K | 661.6K | +626.1K |
| STATE OF WISCONSIN INVESTMENT BOARD | Sold Out | 557.6K | 0 | -557.6K |
| PRELUDE CAPITAL MANAGEMENT, LLC | Sold Out | 403.6K | 0 | -403.6K |
| Qube Research & Technologies Ltd | New | 0 | 382.4K | +382.4K |
| MARSHALL WACE, LLP | Increased | 1.2M | 1.6M | +370.9K |
| Potomac Capital Management, Inc. | Sold Out | 365.0K | 0 | -365.0K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 646.7K | 963.8K | +317.1K |
| Connor, Clark & Lunn Investment Management Ltd. | Increased | 96.7K | 412.8K | +316.1K |
| Trexquant Investment LP | New | 0 | 285.9K | +285.9K |
| XTX Topco Ltd | New | 0 | 222.2K | +222.2K |
| BlackRock, Inc. | Reduced | 208.6K | 13.4K | -195.2K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Reduced | 233.9K | 46.1K | -187.8K |
| MORGAN STANLEY | Reduced | 710.4K | 544.1K | -166.3K |
| JANE STREET GROUP, LLC | Increased | 49.8K | 215.9K | +166.1K |
| Caption Management, LLC | New | 0 | 160.1K | +160.1K |
| BLUEFIN CAPITAL MANAGEMENT, LLC | New | 0 | 147.7K | +147.7K |
| SILVERBACK ASSET MANAGEMENT LLC | Reduced | 220.0K | 100.0K | -120.0K |
| Virtu Financial LLC | New | 0 | 115.0K | +115.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.