MAGNACHIP SEMICONDUCTOR Corp (MX) shareholders
MXNYSESemiconductors & Related DevicesFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 5, 2026Score 6/3079% below fair value
$2.96+0.43 (+17.00%)
Close on Nov 11, 2026Market cap $108.07MP/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
42.8%
16M of 37M shares
Institutional holders
76
24 new, 17 sold out
Net institutional buying
-3M
In Q2 2026
Insider trades, 12 months
11 buys · 1 sales
Net bought $1.17M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Amoruso Cristiano Joint filing with Byreforge LLC (8.50%) | 3,072,779 | 8.50% | 13D (active) amendment | Jan 14, 2026 |
| Toro 18 Holdings LLC Joint filing with Immersion Corp (8.00%), Martin William C (8.00%) and 1 more | 2,970,139 | 8.00% | 13G (passive) | Dec 23, 2024 |
| Clearline Capital LP Joint filing with Clearline Capital, LLC (5.10%), Marc Majzner (5.10%) | 1,900,176 | 5.10% | 13G (passive) | Dec 31, 2024 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of MX | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Marshall Wace, Llp | 1,615,488 | 4.42% | $7.64M | +370,866 | 0.01% |
| FourWorld Capital Management LLC | 1,600,695 | 4.38% | $7.57M | −57,006 | 6.89% |
| Two Sigma Investments, LP | 1,501,438 | 4.11% | $7.10M | +929,604 | 0.01% |
| Oaktree Capital Management LP | 1,500,000 | 4.11% | $7.10M | −1,349,858 | 0.10% |
| D. E. Shaw & Co., Inc. | 1,397,759 | 3.83% | $6.61M | +1,238,153 | 0.00% |
| Acadian Asset Management LLC | 963,768 | 2.64% | $4.55M | +317,084 | 0.01% |
| Renaissance Technologies LLC | 661,600 | 1.81% | $3.13M | +626,100 | 0.00% |
| Morgan Stanley | 544,125 | 1.49% | $2.57M | −166,319 | 0.00% |
| Dimensional Fund Advisors LP | 475,648 | 1.30% | $2.25M | −73,458 | 0.00% |
| Connor, Clark & Lunn Investment Management Ltd. | 412,849 | 1.13% | $1.95M | +316,129 | 0.00% |
| Qube Research & Technologies Ltd | 382,383 | 1.05% | $1.81M | New | 0.00% |
| Trexquant Investment LP | 285,909 | 0.78% | $1.35M | New | 0.01% |
| Bnp Paribas Arbitrage, Snc | 265,146 | 0.73% | $1.25M | −64,222 | 0.00% |
| Vanguard Portfolio Management LLC | 239,694 | 0.66% | $1.13M | – | 0.00% |
| Millennium Management LLC | 236,422 | 0.65% | $1.12M | −56,518 | 0.00% |
| XTX Topco Ltd | 222,197 | 0.61% | $1.05M | New | 0.01% |
| Jane Street Group, LLC | 215,877 | 0.59% | $1.02M | +166,108 | 0.00% |
| Oddo Bhf Asset Management Sas | 215,098 | 0.59% | $1.02M | – | 0.05% |
| Boothbay Fund Management, LLC | 200,081 | 0.55% | $946.38K | −7,125 | 0.01% |
| Gsa Capital Partners Llp | 199,954 | 0.55% | $946.00K | −80,705 | 0.06% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 76 | 16M | 42.8% | 24 / 23 | 23 / 17 | 6M | 9M |
| Q1 2026 | 71 | 20M | 53.7% | 14 / 19 | 23 / 10 | 3M | 3M |
| Q4 2025 | 69 | 20M | 53.7% | 13 / 15 | 26 / 18 | 3M | 6M |
| Q3 2025 | 75 | 23M | 62.3% | 6 / 24 | 24 / 22 | 3M | 3M |
| Q2 2025 | 91 | 23M | 64.3% | 17 / 26 | 25 / 12 | 2M | 1M |
| Q1 2025 | 87 | 23M | 62.3% | 14 / 18 | 34 / 9 | 1M | 2M |
| Q4 2024 | 82 | 24M | 65.0% | 11 / 24 | 24 / 16 | 5M | 4M |
| Q3 2024 | 88 | 22M | 61.2% | 12 / 24 | 28 / 12 | 2M | 2M |
| Q2 2024 | 89 | 23M | 62.0% | 8 / 24 | 32 / 20 | 2M | 4M |
| Q1 2024 | 103 | 25M | 68.0% | 12 / 32 | 35 / 31 | 4M | 8M |
| Q4 2023 | 122 | 29M | 80.0% | 20 / 42 | 40 / 14 | 4M | 4M |
| Q3 2023 | 117 | 29M | 79.9% | 12 / 34 | 36 / 9 | 2M | 2M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
24 funds held MX in Q2 2026, 8% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of MX | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Strategic Small-Cap Equity Fund | 239,694 | 0.66% | $1.13M | 0.04% | Jun 30, 2026 |
| U.S. Small Cap Portfolio | 156,700 | 0.43% | $510.84K | 0.00% | Jul 31, 2026 |
| U.S. Micro Cap Portfolio | 92,989 | 0.25% | $303.14K | 0.00% | Jul 31, 2026 |
| Avantis U.S. Small Cap Equity ETF | 58,360 | 0.16% | $513.57K | 0.02% | May 31, 2026 |
| Dimensional U.S. Small Cap ETF | 51,612 | 0.14% | $168.26K | 0.00% | Jul 31, 2026 |
| Ultra-Small Company Market Fund | 40,000 | 0.11% | $189.20K | 0.13% | Jun 30, 2026 |
| State Street(R) SPDR(R) S&P(R) International Small Cap ETF | 28,692 | 0.08% | $135.71K | 0.02% | Jun 30, 2026 |
| Voya Multi-Manager International Small Cap Fund | 22,267 | 0.06% | $72.59K | 0.01% | Jul 31, 2026 |
| JNL/DFA U.S. Small Cap Fund | 11,762 | 0.03% | $55.63K | 0.01% | Jun 30, 2026 |
| AST Small-Cap Equity Portfolio | 8,820 | 0.02% | $41.72K | 0.00% | Jun 30, 2026 |
| U.S. Core Equity 2 Portfolio | 8,656 | 0.02% | $28.22K | 0.00% | Jul 31, 2026 |
| Blackstone Alternative Multi-Strategy Fund | 8,000 | 0.02% | $37.84K | 0.00% | Jun 30, 2026 |
| U.S. Vector Equity Portfolio | 6,844 | 0.02% | $22.31K | 0.00% | Jul 31, 2026 |
| EA Bridgeway Omni Small-Cap Value ETF | 6,141 | 0.02% | $29.05K | 0.00% | Jun 30, 2026 |
| Avantis U.S. Equity ETF | 5,631 | 0.02% | $49.55K | 0.00% | May 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Chae Lee | Chief Executive Officer, Director | 458,750 | 1.26% | Nov 10, 2026 |
| Young-Joon Kim | See Remarks, Director | 590,970 | 1.62% | Jun 3, 2025 |
| Seunghoon Lee | Chief of Manufacturing | 158,201 | 0.43% | Jun 3, 2026 |
| Shinyoung Park | Chief Financial Officer | 327,954 | 0.90% | Jun 3, 2026 |
| Jinseok Yang | See Remarks | 73,909 | 0.20% | Mar 4, 2025 |
| Theodore S. Kim | See Remarks | 311,199 | 0.85% | Jan 3, 2025 |
| Cristiano Amoruso | Director | 3,337,593 | 9.14% | Nov 10, 2026 |
| Camillo Martino | Director | 450,661 | 1.23% | Aug 18, 2026 |
| Kyo-Hwa Liz Chung | Director | 149,599 | 0.41% | Aug 3, 2026 |
| Gilbert E. Nathan | Director | 427,477 | 1.17% | Aug 3, 2026 |
| Ilbok Lee | Director | 275,026 | 0.75% | Jul 3, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Cristiano Amoruso Director | Nov 9, 2026 | Buy | +300,000 | $2.46 | $739.02K | 3,262,536 |
| Cristiano Amoruso Director | Nov 6, 2026 | Buy | +268,009 | $2.36 | $632.13K | 2,962,536 |
| Cristiano Amoruso Director | Nov 6, 2026 | Sale | −378,252 | $2.22 | $840.67K | 2,694,527 |
| Chae Lee Chief Executive Officer, Director | Nov 6, 2026 | Buy | +20,000 | $2.27 | $45.40K | 458,750 |
| Chae Lee Chief Executive Officer, Director | Nov 6, 2026 | Buy | +20,000 | $2.15 | $43.00K | 438,750 |
| Chae Lee Chief Executive Officer, Director | Nov 6, 2026 | Buy | +30,000 | $2.23 | $66.96K | 418,750 |
| Chae Lee Chief Executive Officer, Director | Sep 24, 2026 | Buy | +20,000 | $3.22 | $64.40K | 388,750 |
| Chae Lee Chief Executive Officer, Director | Sep 23, 2026 | Buy | +30,000 | $3.19 | $95.70K | 368,750 |
| Chae Lee Chief Executive Officer, Director | Sep 23, 2026 | Buy | +50,000 | $3.17 | $158.50K | 338,750 |
| Camillo Martino Director | Aug 15, 2026 | Award | +6,764 | – | – | 410,661 |
| Kyo-Hwa Liz Chung Director | Aug 1, 2026 | Award | +48,810 | – | – | 149,599 |
| Gilbert E. Nathan Director | Aug 1, 2026 | Award | +51,191 | – | – | 265,682 |
| Camillo Martino Director | Aug 1, 2026 | Award | +39,286 | – | – | 403,897 |
| Cristiano Amoruso Director | Aug 1, 2026 | Award | +46,429 | – | – | 75,057 |
| Chae Lee Chief Executive Officer, Director | Jul 1, 2026 | Award | +288,750 | – | – | 288,750 |
| Seunghoon Lee Chief of Manufacturing | Jun 1, 2026 | Award | +30,000 | – | – | 158,201 |
| Shinyoung Park Chief Financial Officer | Jun 1, 2026 | Award | +112,500 | – | – | 327,954 |
| Gilbert E. Nathan Director | Mar 16, 2026 | Buy | +21,994 | $2.87 | $63.12K | 158,200 |
| Gilbert E. Nathan Director | Mar 13, 2026 | Buy | +13,006 | $2.79 | $36.29K | 136,206 |
| Gilbert E. Nathan Director | Mar 12, 2026 | Buy | +25,000 | $2.75 | $68.75K | 123,200 |
| Kyo-Hwa Liz Chung Director | Feb 15, 2026 | Award | +2,946 | – | – | 100,789 |
| Gilbert E. Nathan Director | Feb 15, 2026 | Award | +1,478 | – | – | 214,491 |
| Cristiano Amoruso Director | Feb 15, 2026 | Award | +28,628 | – | – | 28,628 |
| Seunghoon Lee See Remarks | Dec 31, 2025 | Tax withholding | −4,761 | $2.55 | $12.14K | 133,081 |
| Seunghoon Lee See Remarks | Dec 31, 2025 | Tax withholding | −4,880 | $2.55 | $12.44K | 128,201 |
| Seunghoon Lee See Remarks | Dec 31, 2025 | Tax withholding | −2,778 | $2.55 | $7.08K | 137,842 |
| Seunghoon Lee See Remarks | Dec 31, 2025 | Tax withholding | −3,333 | $2.55 | $8.50K | 140,620 |
| Seunghoon Lee See Remarks | Dec 31, 2025 | Award | +7,000 | $2.55 | $17.85K | 143,953 |
| Shinyoung Park See Remarks | Dec 31, 2025 | Tax withholding | −17,977 | $2.55 | $45.84K | 215,454 |
| Shinyoung Park See Remarks | Dec 31, 2025 | Tax withholding | −12,234 | $2.55 | $31.20K | 233,431 |
| Shinyoung Park See Remarks | Dec 31, 2025 | Tax withholding | −6,121 | $2.55 | $15.61K | 245,665 |
| Gilbert E. Nathan Director | Nov 15, 2025 | Award | +6,320 | – | – | 213,013 |
| Kyo-Hwa Liz Chung Director | Nov 15, 2025 | Award | +3,160 | – | – | 97,843 |
| Camillo Martino See Remarks, Director | Oct 1, 2025 | Award | +105,484 | – | – | 364,611 |
| Shinyoung Park See Remarks | Aug 25, 2025 | Buy | +10,000 | $2.87 | $28.70K | 251,786 |
| Camillo Martino See Remarks, Director | Aug 22, 2025 | Buy | +30,000 | $2.84 | $85.20K | 259,127 |
| Seunghoon Lee See Remarks | Aug 15, 2025 | Award | +30,750 | – | – | 136,953 |
| Kyo-Hwa Liz Chung Director | Jul 1, 2025 | Award | +45,455 | – | – | 94,683 |
| Camillo Martino Director | Jul 1, 2025 | Award | +53,247 | – | – | 229,127 |
| Gilbert E. Nathan Director | Jul 1, 2025 | Award | +50,650 | – | – | 206,693 |
| Ilbok Lee Director | Jul 1, 2025 | Award | +55,845 | – | – | 275,026 |
| Kyo-Hwa Liz Chung Director | Jun 15, 2025 | Returned to company | −15,814 | $3.84 | $60.73K | 49,228 |
| Young-Joon Kim See Remarks, Director | Jun 1, 2025 | Award | +164,269 | – | – | 590,970 |
| Shinyoung Park See Remarks | Jun 1, 2025 | Award | +110,210 | – | – | 241,786 |
| Ilbok Lee Director | Mar 14, 2025 | Buy | +20,000 | $3.86 | $77.20K | 219,181 |
| Gilbert E. Nathan Director | Mar 13, 2025 | Buy | +20,000 | $3.68 | $73.60K | 98,200 |
| Camillo Martino Director | Mar 13, 2025 | Buy | +20,000 | $3.66 | $73.20K | 40,000 |
| Jinseok Yang See Remarks | Mar 1, 2025 | Award | +7,000 | $4.54 | $31.78K | 73,909 |
| Jinseok Yang See Remarks | Mar 1, 2025 | Tax withholding | −3,167 | $4.54 | $14.38K | 70,742 |
| Seunghoon Lee See Remarks | Mar 1, 2025 | Award | +7,000 | $4.54 | $31.78K | 109,379 |
| Seunghoon Lee See Remarks | Mar 1, 2025 | Tax withholding | −3,176 | $4.54 | $14.42K | 106,203 |
| Jinseok Yang See Remarks | Dec 31, 2024 | Tax withholding | −2,444 | $4.02 | $9.82K | 71,638 |
| Jinseok Yang See Remarks | Dec 31, 2024 | Tax withholding | −4,729 | $4.02 | $19.01K | 66,909 |
| Jinseok Yang See Remarks | Dec 31, 2024 | Tax withholding | −1,577 | $4.02 | $6.34K | 74,082 |
| Seunghoon Lee See Remarks | Dec 31, 2024 | Tax withholding | −2,877 | $4.02 | $11.57K | 107,311 |
| Seunghoon Lee See Remarks | Dec 31, 2024 | Tax withholding | −1,645 | $4.02 | $6.61K | 110,188 |
| Seunghoon Lee See Remarks | Dec 31, 2024 | Tax withholding | −4,932 | $4.02 | $19.83K | 102,379 |
| Theodore S. Kim See Remarks | Dec 31, 2024 | Tax withholding | −2,917 | $4.02 | $11.73K | 311,199 |
| Theodore S. Kim See Remarks | Dec 31, 2024 | Tax withholding | −8,750 | $4.02 | $35.17K | 293,200 |
| Theodore S. Kim See Remarks | Dec 31, 2024 | Tax withholding | −9,249 | $4.02 | $37.18K | 301,950 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
3.46%
1M shares short
Days to cover
1.4
At 1M shares a day
Change since last report
-5.3%
From 1M shares
Short volume, 20 days
50.9%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Magnachip Semiconductor's stock actually held short. Settlement fails (shares not delivered on time) peaked at 36,600 shares on Oct 13, 2026 over the last 90 days.
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