Magnachip Semiconductor Corp. 13F holders
77 funds reported a position in Magnachip Semiconductor Corp. in their 13F for the quarter ended 30 June 2026, together 15.6 million shares worth $73.9 million. Against the quarter before, 25 opened a position, 23 added, 23 trimmed and 18 sold out; together they sold a net 4.0 million shares. The largest holders: Marshall Wace, LLP, FourWorld Capital Management LLC and Two Sigma Investments, LP.
Funds holding77+6 on Q1 2026
Shares they held15.6Mworth $73.9 million
Net sold on the quarter4.0M sharesabout $18.8 million at the funds' values
Funds buying to selling48 to 41opened or added, to cut or sold
Opened 25Added 23Held 6Trimmed 23Sold out 18
What each fund did in MX against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in MX in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,405 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 5 reported a position in Magnachip Semiconductor Corp.: 0 opened one, 1 added, 1 trimmed and 3 sold out, a net 4,236 shares sold.
| Fund | Change in shares | Shares now | Status | Filing |
|---|---|---|---|---|
| Caitong International Asset Management Co., Ltd | +9,116 | 22,208 | added | 13F |
| SBI Securities Co., Ltd. | -1,077 | 1,219 | trimmed | 13F |
| C2P Capital Advisory Group, LLC d.b.a. Prosperity Capital Advisors | -11,475 | 0 | sold out | 13F |
| Salem Investment Counselors Inc. | -300 | 0 | sold out | 13F |
| TD Waterhouse Canada Inc. | -500 | 0 | sold out | 13F |
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 6 reported a position in Magnachip Semiconductor Corp. in a 13F for the quarter ended 30 June 2026. The largest: Two Sigma Investments, 1.5 million shares worth $7.1 million, 0.0% of its reported book. Sold out: Point72 Asset Management. In the quarter, 3 funds added or opened a position and 3 trimmed or sold out; together they bought a net 1.4 million shares, about $6.5 million at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Two Sigma Investments | 1,501,438 | $7.1 million | 0.0% | +929,604 | added | 30 June 2026 | 13F |
| Renaissance Technologies | 661,600 | $3.1 million | 0.0% | +626,100 | added | 30 June 2026 | 13F |
| Millennium Management | 236,422 | $1.1 million | 0.0% | -56,518 | trimmed | 30 June 2026 | 13F |
| Citadel Advisors | 111,043 | $525,234 | 0.0% | +22,969 | added | 30 June 2026 | 13F |
| Fairfax Financial Holdings | 62,500 | $296,250 | 0.0% | -62,500 | trimmed | 30 June 2026 | 13F |
| FMR LLC | 37 | $175 | 0.0% | no change | held | 30 June 2026 | 13F |
| Point72 Asset Management | 0 | $0 | 0.0% | -94,209 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| Marshall Wace, LLP | 1,615,488 | 10.33% | $7.6 million | 0.01% | +370,866 | 13F |
| FourWorld Capital Management LLC | 1,600,695 | 10.23% | $7.6 million | 8.75% | -57,006 | 13F |
| Two Sigma Investments, LP | 1,501,438 | 9.60% | $7.1 million | 0.01% | +929,604 | 13F |
| Oaktree Capital Management LP | 1,500,000 | 9.59% | $7.1 million | 0.19% | -1,349,858 | 13F |
| D. E. Shaw & Co., Inc. | 1,397,759 | 8.93% | $6.6 million | 0.00% | +1,238,153 | 13F |
| Acadian Asset Management LLC | 963,768 | 6.16% | $4.5 million | 0.01% | +317,084 | 13F |
| Renaissance Technologies LLC | 661,600 | 4.23% | $3.1 million | 0.00% | +626,100 | 13F |
| Morgan Stanley | 544,125 | 3.48% | $2.6 million | 0.00% | -166,319 | 13F |
| Dimensional Fund Advisors LP | 475,648 | 3.04% | $2.2 million | 0.00% | -73,458 | 13F |
| Connor, Clark & Lunn Investment Management Ltd. | 412,849 | 2.64% | $2.0 million | 0.00% | +316,129 | 13F |
| Qube Research & Technologies Ltd | 382,383 | 2.44% | $1.8 million | 0.00% | new | 13F |
| Trexquant Investment LP | 285,909 | 1.83% | $1.4 million | 0.01% | new | 13F |
| BNP Paribas Financial Markets | 265,146 | 1.69% | $1.3 million | 0.00% | -64,222 | 13F |
| Vanguard Portfolio Management LLC | 239,694 | 1.53% | $1.1 million | 0.00% | no change | 13F |
| Millennium Management LLC | 236,422 | 1.51% | $1.1 million | 0.00% | -56,518 | 13F |
| XTX Topco Ltd | 222,197 | 1.42% | $1.1 million | 0.01% | new | 13F |
| Jane Street Group, LLC | 215,877 | 1.38% | $1.0 million | 0.00% | +166,108 | 13F |
| Oddo BHF Asset Management Sas | 215,098 | 1.37% | $1.0 million | 0.05% | no change | 13F |
| Boothbay Fund Management, LLC | 200,081 | 1.28% | $946,383 | 0.02% | -7,125 | 13F |
| Gsa Capital Partners LLP | 199,954 | 1.28% | $946,000 | 0.06% | -80,705 | 13F |
| Caption Management, LLC | 160,090 | 1.02% | $757,226 | 0.03% | new | 13F |
| Steward Partners Investment Advisory, LLC | 153,347 | 0.98% | $725,331 | 0.00% | -43,655 | 13F |
| Bluefin Capital Management, LLC | 147,698 | 0.94% | $698,612 | 0.20% | new | 13F |
| Group One Trading LLC | 117,823 | 0.75% | $557,303 | 0.02% | +94,157 | 13F |
| Virtu Financial LLC | 114,969 | 0.73% | $544,000 | 0.02% | new | 13F |
| Citadel Advisors LLC | 111,043 | 0.71% | $525,234 | 0.00% | +22,969 | 13F |
| Algert Global LLC | 110,785 | 0.71% | $524,013 | 0.01% | +52,090 | 13F |
| UBS Group AG | 110,336 | 0.71% | $521,889 | 0.00% | -73,110 | 13F |
| Federation des caisses Desjardins du Quebec | 108,474 | 0.69% | $512,762 | 0.00% | +84,038 | 13F |
| Susquehanna International Group, LLP | 108,103 | 0.69% | $511,327 | 0.00% | +83,753 | 13F |
| Silverback Asset Management LLC | 100,000 | 0.64% | $473,000 | 1.77% | -120,000 | 13F |
| Goldman Sachs Group Inc. | 95,843 | 0.61% | $453,337 | 0.00% | -104,800 | 13F |
| Tudor Investment Corp. Et Al | 75,103 | 0.48% | $355,237 | 0.00% | new | 13F |
| American Century Companies Inc. | 73,701 | 0.47% | $348,606 | 0.00% | +1,058 | 13F |
| IMC-Chicago, LLC | 67,909 | 0.43% | $321,210 | 0.00% | new | 13F |
| Squarepoint Ops LLC | 67,450 | 0.43% | $319,039 | 0.00% | new | 13F |
| Fairfax Financial Holdings Ltd | 62,500 | 0.40% | $296,250 | 0.01% | -62,500 | 13F |
| Barclays PLC | 60,000 | 0.38% | $283,800 | 0.00% | +54,218 | 13F |
| Eurizon Capital SGR S.p.A. | 60,955 | 0.39% | $281,871 | 0.00% | -9,989 | 13F |
| Polunin Capital Partners Ltd | 59,811 | 0.38% | $240,000 | 0.06% | +2,800 | 13F |
| Bridgeway Capital Management, LLC | 46,141 | 0.29% | $218,247 | 0.00% | -187,754 | 13F |
| JPMorgan Chase & Co. | 38,588 | 0.25% | $178,277 | 0.00% | -87,738 | 13F |
| Winton Group Ltd | 34,678 | 0.22% | $164,027 | 0.01% | new | 13F |
| Yakira Capital Management, Inc. | 34,675 | 0.22% | $164,013 | 0.05% | -63,325 | 13F |
| Wesbanco Bank Inc. | 30,000 | 0.19% | $141,900 | 0.00% | new | 13F |
| State Street Corp. | 28,692 | 0.18% | $135,713 | 0.00% | +295 | 13F |
| HRT Financial LP | 28,441 | 0.18% | $134,000 | 0.00% | +9,293 | 13F |
| Tower Research Capital LLC (TRC) | 27,646 | 0.18% | $130,766 | 0.00% | +27,208 | 13F |
| Citigroup Inc. | 23,206 | 0.15% | $109,764 | 0.00% | new | 13F |
| Gabelli & Co Investment Advisers, INC. | 22,505 | 0.14% | $106,449 | 0.01% | -54,970 | 13F |
The 50 largest of the 77 funds that reported a position in MX in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on MX
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Millennium Management | Calls | 161,000 | $761,530 | 30 June 2026 | 13F |
| Citadel Advisors | Calls | 150,400 | $711,392 | 30 June 2026 | 13F |
| Citadel Advisors | Puts | 116,600 | $551,518 | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 20 March 2026 | 13G/A | Toro 18 Holdings LLC and 7 others | 1.5 million | 4.1% | 20 March 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 17 February 2026 | 13G/A | Clearline Capital LP and 5 others | 1.5 million | 4.1% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 11 February 2026 | 13G | Systematic Financial Management LP and 1 other | 0 | 0.0% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 20 January 2026 | 13D/A | Byreforge LLC and 1 other | 3.1 million | 8.5% | 14 January 2026 | Item 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 elect | EDGAR |
| 20 November 2025 | 13D | Byreforge LLC and 1 other | 3.1 million | 8.5% | 13 November 2025 | The Reporting Persons purchased the Shares based on the Reporting Persons' belief that the Shares, when purchased, were undervalued and represented an attractive investment opportunity. Depending upon overall market conditions, other invest | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 20 August 2026 | 9,124 | $3.33 | SEC |
| 12 August 2026 | 9,743 | $3.90 | SEC |
| 17 July 2026 | 388 | $3.52 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.