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.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| MARSHALL WACE, LLP | 1.6M | 10.0% |
| FourWorld Capital Management LLC | 1.6M | 9.9% |
| TWO SIGMA INVESTMENTS, LP | 1.5M | 9.3% |
| OAKTREE CAPITAL MANAGEMENT LP | 1.5M | 9.3% |
| D. E. Shaw & Co., Inc. | 1.4M | 8.7% |
| ACADIAN ASSET MANAGEMENT LLC | 963.8K | 6.0% |
| RENAISSANCE TECHNOLOGIES LLC | 661.6K | 4.1% |
| MORGAN STANLEY | 544.1K | 3.4% |
| HRT FINANCIAL LP | 528.4K | 3.3% |
| DIMENSIONAL FUND ADVISORS LP | 475.6K | 2.9% |
| 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 | 1.6% |
| 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 | 1.3% |
| ODDO BHF ASSET MANAGEMENT SAS | 215.1K | 1.3% |
| BOOTHBAY FUND MANAGEMENT, LLC | 200.1K | 1.2% |
| GSA CAPITAL PARTNERS LLP | 200.0K | 1.2% |
| 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 | 0.7% |
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 |
| Cygnus Capital Advisors, LLC | Sold Out | 734.0K | 0 | -734.0K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 35.5K | 661.6K | +626.1K |
| STATE OF WISCONSIN INVESTMENT BOARD | Sold Out | 557.6K | 0 | -557.6K |
| HRT FINANCIAL LP | Increased | 19.1K | 528.4K | +509.3K |
| 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 |
| GOLDMAN SACHS GROUP INC | Reduced | 200.6K | 95.8K | -104.8K |
| GABELLI FUNDS LLC | Reduced | 116.8K | 21.7K | -95.1K |
| Point72 Asset Management, L.P. | Sold Out | 94.2K | 0 | -94.2K |
| GROUP ONE TRADING LLC | Increased | 23.7K | 117.8K | +94.2K |
| JPMORGAN CHASE & CO | Reduced | 126.3K | 38.6K | -87.7K |
| Federation des caisses Desjardins du Quebec | Increased | 24.4K | 108.5K | +84.0K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 24.4K | 108.1K | +83.8K |
| GSA CAPITAL PARTNERS LLP | Reduced | 280.7K | 200.0K | -80.7K |
| TUDOR INVESTMENT CORP ET AL | New | 0 | 75.1K | +75.1K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 549.1K | 475.6K | -73.5K |
| UBS Group AG | Reduced | 183.4K | 110.3K | -73.1K |
| IMC-Chicago, LLC | New | 0 | 67.9K | +67.9K |
| Squarepoint Ops LLC | New | 0 | 67.5K | +67.5K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 329.4K | 265.1K | -64.2K |
| Yakira Capital Management, Inc. | Reduced | 98.0K | 34.7K | -63.3K |
| FAIRFAX FINANCIAL HOLDINGS LTD/ CAN | Reduced | 125.0K | 62.5K | -62.5K |
| FourWorld Capital Management LLC | Reduced | 1.7M | 1.6M | -57.0K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 292.9K | 236.4K | -56.5K |
| GABELLI & Co INVESTMENT ADVISERS, INC. | Reduced | 77.5K | 22.5K | -55.0K |
| BARCLAYS PLC | Increased | 5.8K | 60.0K | +54.2K |
| ALGERT GLOBAL LLC | Increased | 58.7K | 110.8K | +52.1K |
| ALTFEST L J & CO INC | Sold Out | 47.8K | 0 | -47.8K |
| Steward Partners Investment Advisory, LLC | Reduced | 197.0K | 153.3K | -43.7K |
| WINTON GROUP Ltd | New | 0 | 34.7K | +34.7K |
| Centiva Capital, LP | Reduced | 43.4K | 10.6K | -32.8K |
| WESBANCO BANK INC | New | 0 | 30.0K | +30.0K |
| Tower Research Capital LLC (TRC) | Increased | 438 | 27.6K | +27.2K |
| Jump Financial, LLC | Sold Out | 24.1K | 0 | -24.1K |
| CITIGROUP INC | New | 0 | 23.2K | +23.2K |
| CITADEL ADVISORS LLC | Increased | 88.1K | 111.0K | +23.0K |
| Quadrature Capital Ltd | Sold Out | 19.2K | 0 | -19.2K |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | New | 0 | 19.1K | +19.1K |
| FOX RUN MANAGEMENT, L.L.C. | New | 0 | 16.5K | +16.5K |
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.