MAGNACHIP SEMICONDUCTOR CORP MX
COM · Common Stock · CUSIP 55933J203 · ISIN US55933J2033
Magnachip is a designer and manufacturer of analog and mixed-signal semiconductor platform solutions for communications, IoT, consumer, computing, industrial and automotive applications.
- SectorTechnology
- IndustrySemiconductors & Related Devices
- HeadquartersNorth Chungcheong, South Korea
- Founded2004
- Websitemagnachip.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($325.4k this quarter). Holder counts are more reliable. Shares outstanding: 43.5m as of 2023-02-10, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $9.39. Options: 17 managers hold calls ($21.5m notional), 7 hold puts ($2.2m).
Trends to Q4 2022
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 129 |
| Q4 2022 | 119 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $20.4m | $7.1m | 0.35 |
| Q4 2022 | $21.5m | $2.2m | 0.10 |
Biggest buyers
| ALLIANCEBERNSTEIN L.P. | Added | +967.9k |
| THOMPSON SIEGEL & WALMSLEY LLC | New | +941.4k |
| BRIGADE CAPITAL MANAGEMENT, LP | Added | +525.5k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | Added | +440.4k |
| GOLDMAN SACHS GROUP INC | Added | +413.0k |
| BOOTHBAY FUND MANAGEMENT, LLC | Added | +242.8k |
| AQR CAPITAL MANAGEMENT LLC | Added | +214.0k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Added | +165.0k |
| TWO SIGMA INVESTMENTS, LP | Added | +162.4k |
| TWO SIGMA ADVISERS, LP | Added | +150.9k |
Biggest sellers
| MANGROVE PARTNERS IM, LLC | Sold out | -1.1m |
| AMERIPRISE FINANCIAL INC | Reduced | -645.2k |
| Philosophy Capital Management LLC | Sold out | -527.5k |
| FMR LLC | Sold out | -307.4k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -286.3k |
| K2 PRINCIPAL FUND, L.P. | Sold out | -266.1k |
| NORGES BANK | Sold out | -249.3k |
| BANK OF AMERICA CORP /DE/ | Reduced | -209.1k |
| Verition Fund Management LLC | Sold out | -201.8k |
| Clearline Capital LP | Reduced | -195.9k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $5.7m606.3k shares |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC | Added | $5.6m600.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.7m291.3k shares |
| GROUP ONE TRADING LLC | Reduced | $2.3m243.4k shares |
| JANE STREET GROUP, LLC | Reduced | $1.5m164.0k shares |
| Caption Management, LLC | Added | $1.1m121.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $634.0k67.6k shares |
| WOLVERINE TRADING, LLC | Added | $618.0k65.8k shares |
| STATE OF WISCONSIN INVESTMENT BOARD | New | $609.4k64.9k shares |
| K2 PRINCIPAL FUND, L.P. | Reduced | $445.1k47.4k shares |
Biggest puts
| GROUP ONE TRADING LLC | Reduced | $1.6m173.2k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $376.5k40.1k shares |
| WOLVERINE TRADING, LLC | New | $100.0k10.7k shares |
| CITADEL ADVISORS LLC | Reduced | $32.9k3.5k shares |
| SIMPLEX TRADING, LLC | Reduced | $15.0k1.7k shares |
| Cutler Group LLC / CA | Reduced | $4.0k5.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
Byreforge LLC
13D · may seek influence
no change · filed 2026-01-20
Stated purposeItem 4 is hereby amended to add the following: On January 14, 2026, the Board appointed Cristiano Amoruso as a director of the Issuer to serve until the Issuer's 2026 Annual Meeting of Stockholders or until his successor has been duly elected and qualified, or until his earlier death, resignation, retirement, disqualification or removal. Mr. Amoruso has also been appointed to each of the Audit Committee, the Compensation Committee and the Nominating and Corporate Governance Committee of the Board. Full filing |
8.5% |
| TORO 18 HOLDINGS LLC 13G · passive investor new · filed 2025-01-02 | 8.0% |
Fell to 5% or below in the last year: IMMERSION CORP (4.1%, 2026-03-20), Clearline Capital LP (4.1%, 2026-02-17), SYSTEMATIC FINANCIAL MANAGEMENT LP (0.0%, 2026-02-11)
Insider purchases and sales in Q4 2022
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2021 | 0 | — | 0 | — | — |
| Q2 2021 | 0 | — | 0 | — | — |
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 0 | — | — |
| Q1 2022 | 2 | $150.2k | 1 | $367.2k | — |
| Q2 2022 | 0 | — | 0 | — | — |
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
None reported in Q4 2022.
Holders, Q4 2022
| Manager | Shares | Change |
|---|---|---|
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 3.2m $30.0m | Added +967.9k |
| Toronado Partners, LLC 9.69% of their portfolio | 2.7m $25.3m | Added +118.8k |
| OAKTREE CAPITAL MANAGEMENT LP 0.23% of their portfolio | 2.3m $21.6m | Unchanged |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.67% of their portfolio | 2.2m $20.5m | Added +440.4k |
| Rubric Capital Management LP 0.80% of their portfolio | 2.0m $18.3m | Unchanged |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 1.3m $12.0m | Added +14.1k |
| Clearline Capital LP 1.90% of their portfolio | 1.1m $10.6m | Reduced -195.9k |
| THOMPSON SIEGEL & WALMSLEY LLC 0.14% of their portfolio | 941.4k $8.8m | New |
| Quinn Opportunity Partners LLC 1.01% of their portfolio | 860.9k $8.1m | Reduced -10.0k |
| Kite Lake Capital Management (UK) LLP 5.75% of their portfolio | 741.0k $7.0m | Unchanged |
| STATE OF WISCONSIN INVESTMENT BOARD 0.02% of their portfolio | 689.4k $6.5m | Reduced -2.7k |
| S SQUARED TECHNOLOGY, LLC 4.22% of their portfolio | 663.6k $6.2m | Unchanged |
| VANGUARD GROUP INC 0.00% of their portfolio | 627.7k $5.9m | Added +52.0k |
| WATER ISLAND CAPITAL LLC 0.49% of their portfolio | 613.2k $5.8m | Reduced -30.1k |
| MORGAN STANLEY 0.00% of their portfolio | 604.0k $5.7m | Added +36.2k |
| BRIGADE CAPITAL MANAGEMENT, LP 2.85% of their portfolio | 599.0k $5.6m | Added +525.5k |
| 272 Capital LP 2.24% of their portfolio | 533.4k $5.0m | Added +112.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 492.1k $4.6m | Added +413.0k |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 486.2k $4.6m | Added +214.0k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 470.9k $4.4m | Reduced -286.3k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 437.0k $4.1m | Reduced -645.2k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 416.1k $3.9m | Added +150.9k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.10% of their portfolio | 387.9k $3.6m | Reduced -62.6k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.10% of their portfolio | 338.5k $3.2m | Added +242.8k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 302.4k $2.8m | Added +162.4k |
| GABELLI FUNDS LLC 0.02% of their portfolio | 285.0k $2.7m | Unchanged |
| BlackRock Inc. 0.00% of their portfolio | 269.5k $2.5m | Added +4.2k |
| Man Group plc 0.01% of their portfolio | 269.3k $2.5m | Unchanged |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 265.5k $2.5m | Reduced -31.8k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.06% of their portfolio | 255.0k $2.4m | Added +165.0k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio | 235.9k $2.2m | Unchanged |
| RICE HALL JAMES & ASSOCIATES, LLC 0.13% of their portfolio | 232.2k $2.2m | Reduced -9.7k |
| SILVERBACK ASSET MANAGEMENT LLC 0.33% of their portfolio | 220.0k $2.1m | Added +10.0k |
| Polunin Capital Partners Ltd 0.50% of their portfolio | 211.7k $2.0m | Reduced -1.8k |
| GABELLI & Co INVESTMENT ADVISERS, INC. 0.33% of their portfolio | 163.8k $1.5m | Reduced -39.7k |
| Kepos Capital LP 0.20% of their portfolio | 150.0k $1.4m | Unchanged |
| Fisher Asset Management, LLC 0.00% of their portfolio | 148.4k $1.4m | New |
| J.P. Morgan Private Wealth Advisors LLC 0.00% of their portfolio | 138.3k $1.3m | Added +21.1k |
| FAIRFAX FINANCIAL HOLDINGS LTD/ CAN 0.03% of their portfolio | 125.0k $1.2m | Unchanged |
| RENAISSANCE GROUP LLC 0.06% of their portfolio | 123.7k $1.2m | Added +32.7k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 123.1k $1.2m | Added +107.8k |
| GROUP ONE TRADING LLC 0.04% of their portfolio | 123.0k $1.2m | Reduced -3.7k |
| NATIXIS 0.01% of their portfolio | 122.5k $1.2m | Added +62.5k |
| HighTower Advisors, LLC 0.00% of their portfolio | 122.0k $1.1m | Reduced -88.0k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 121.4k $1.1m | Added +49.0k |
| STATE STREET CORP 0.00% of their portfolio | 121.3k $1.1m | Added +3.1k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 121.0k $1.1m | Added +66.6k |
| Yakira Capital Management, Inc. 0.21% of their portfolio | 108.7k $1.0m | Unchanged |
| Swiss National Bank 0.00% of their portfolio | 107.6k $1.0m | Unchanged |
| MIRIA Asset Management Ltd 5.51% of their portfolio | 98.7k $926.3k | Unchanged |
| CenterBook Partners LP 0.14% of their portfolio | 93.0k $873.1k | Reduced -42.0k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 84.9k $797.5k | Added +46.8k |
| BLUEFIN CAPITAL MANAGEMENT, LLC 0.14% of their portfolio | 83.7k $785.7k | New |
| GREENWOOD CAPITAL ASSOCIATES LLC 0.13% of their portfolio | 81.4k $764.1k | Added +888 |
| Orion Porfolio Solutions, LLC 0.01% of their portfolio | 73.9k $693.9k | Added +49.9k |
| Invesco Ltd. 0.00% of their portfolio | 70.3k $660.3k | Reduced -91 |
| Centiva Capital, LP 0.05% of their portfolio | 70.0k $657.3k | Unchanged |
| BCK CAPITAL MANAGEMENT LP 0.62% of their portfolio | 63.7k $598.5k | Added +400 |
| NORTH RUN CAPITAL, LP 1.36% of their portfolio | 63.1k $592.6k | Unchanged |
| Cetera Advisors LLC 0.01% of their portfolio | 59.3k $556.7k | Added +5.0k |
| Alpha Paradigm Partners, LLC 0.23% of their portfolio | 58.3k $548.0k | Reduced -4.8k |
| SIMPLEX TRADING, LLC 0.03% of their portfolio | 58.3k $547.0k | New |
| Caption Management, LLC 0.09% of their portfolio | 57.8k $542.8k | Added +726 |
| Sather Financial Group Inc 0.04% of their portfolio | 53.4k $501.2k | Reduced -300 |
| NORTHERN TRUST CORP 0.00% of their portfolio | 48.6k $455.9k | Added +14 |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 46.1k $432.4k | Reduced -209.1k |
| MACKENZIE FINANCIAL CORP 0.00% of their portfolio | 43.1k $404.7k | New |
| UBS Group AG 0.00% of their portfolio | 42.6k $400.3k | Reduced -51.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 39.0k $366.4k | Added +384 |
| Ergoteles LLC 0.01% of their portfolio | 37.8k $354.5k | Added +21.1k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 37.4k $351.2k | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 37.1k $348.1k | Unchanged |
| PDT Partners, LLC 0.05% of their portfolio | 34.9k $328.0k | New |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 33.8k $317.7k | Reduced -3.8k |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 33.7k $316.1k | New |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 33.5k $314.2k | Reduced -2.0k |
| Covestor Ltd 0.24% of their portfolio | 31.0k $291.0k | Added +28.0k |
| Diametric Capital, LP 0.14% of their portfolio | 30.9k $290.3k | Reduced -23.1k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 27.8k $261.0k | New |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.00% of their portfolio | 27.3k $256.0k | Reduced -60.9k |
| Walleye Capital LLC 0.01% of their portfolio | 25.5k $239.6k | Added +2.6k |
| Lynrock Lake LP 0.01% of their portfolio | 23.9k $224.1k | Reduced -31.6k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 22.9k $215.4k | Reduced -1.7k |
| Walleye Trading LLC 0.01% of their portfolio | 22.4k $210.1k | Added +4.4k |
| Trexquant Investment LP 0.01% of their portfolio | 19.5k $182.7k | Added +6.8k |
| Investors Research Corp 0.05% of their portfolio | 19.1k $179.3k | Unchanged |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 18.9k $177.5k | Added +3.5k |
| CAXTON ASSOCIATES LP 0.01% of their portfolio | 18.5k $173.7k | New |
| Atria Wealth Solutions, Inc. 0.00% of their portfolio | 14.8k $138.8k | Reduced -1.1k |
| State of Wyoming 0.04% of their portfolio | 14.1k $131.9k | Added +3.4k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 13.8k $130.0k | Reduced -2.0k |
| Legal & General Group Plc 0.00% of their portfolio | 13.3k $124.5k | Unchanged |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 12.8k $120.4k | New |
| ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio | 12.7k $119.0k | Added +470 |
| Quantbot Technologies LP 0.01% of their portfolio | 12.1k $113.5k | New |
| WOLVERINE TRADING, LLC 0.00% of their portfolio | 11.4k $107.0k | New |
| Bank of New York Mellon Corp 0.00% of their portfolio | 10.2k $96.1k | Unchanged |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 10.1k $94.7k | New |
| Leonteq Securities AG 0.00% of their portfolio | 10.0k $93.9k | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 8.2k $77.2k | Unchanged |