MAGNACHIP SEMICONDUCTOR CORP (MX) Institutional Shareholders
MAGNACHIP SEMICONDUCTOR CORP (MX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $72.90M in MX holdings during the latest filing period.
Marshall Wace, Llp is currently the largest disclosed institutional shareholder of MX tracked by InsiderSet, reporting ownership valued at approximately $7.64M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $4.54M, representing an estimated loss of -40.59% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 69% of the total disclosed MX value among the investors covered in this analysis. Major shareholders include Marshall Wace, Llp, Fourworld Capital Management Llc, Two Sigma Investments, Lp, and several other long-term asset managers with concentrated positions in MAGNACHIP SEMICONDUCTOR CORP (MX).
This page ranks the largest institutional MX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
75
Total Reported Value
$72.90M
Largest Holder
Marshall Wace, Llp
Largest Position
$7.64M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
105
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Marshall Wace, Llp | 0.01% | 1,615,488 | $7,641,259 | $4,539,521 | -$3,101,738 | -40.59% | |
| Fourworld Capital Management Llc | 8.75% | 1,600,695 | $7,571,287 | $4,497,953 | -$3,073,334 | -40.59% | |
| Two Sigma Investments, Lp | 0.01% | 1,501,438 | $7,101,802 | $4,219,041 | -$2,882,761 | -40.59% | |
| Oaktree Capital Management | Howard Marks | 0.13% | 1,500,000 | $7,095,000 | $4,215,000 | -$2,880,000 | -40.59% |
| D. E. Shaw & Co., Inc. | 0.00% | 1,397,759 | $6,611,400 | $3,927,703 | -$2,683,697 | -40.59% | |
| Acadian Asset Management Llc | 0.01% | 963,768 | $4,550,000 | $2,708,188 | -$1,841,812 | -40.48% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 661,600 | $3,129,368 | $1,859,096 | -$1,270,272 | -40.59% |
| Morgan Stanley | 0.00% | 544,125 | $2,573,711 | $1,528,991 | -$1,044,720 | -40.59% | |
| Dimensional Fund Advisors Lp | 0.00% | 475,648 | $2,249,489 | $1,336,571 | -$912,918 | -40.58% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 412,849 | $1,952,776 | $1,160,106 | -$792,670 | -40.59% | |
| Qube Research & Technologies Ltd | 0.00% | 382,383 | $1,808,672 | $1,074,496 | -$734,176 | -40.59% | |
| Trexquant Investment Lp | 0.01% | 285,909 | $1,352,350 | $803,404 | -$548,946 | -40.59% | |
| Bnp Paribas Financial Markets | 0.00% | 265,146 | $1,254,141 | $745,060 | -$509,081 | -40.59% | |
| Vanguard Portfolio Management Llc | 0.00% | 239,694 | $1,133,753 | $673,540 | -$460,213 | -40.59% | |
| Millennium Management Llc | 0.00% | 236,422 | $1,118,276 | $664,346 | -$453,930 | -40.59% | |
| Xtx Topco Ltd | 0.01% | 222,197 | $1,050,992 | $624,374 | -$426,618 | -40.59% | |
| Jane Street Group, Llc | 0.00% | 215,877 | $1,021,099 | $606,614 | -$414,485 | -40.59% | |
| Boothbay Fund Management, Llc | 0.02% | 200,081 | $946,383 | $562,228 | -$384,155 | -40.59% | |
| Gsa Capital Partners Llp | 0.06% | 199,954 | $946,000 | $561,871 | -$384,129 | -40.61% | |
| Caption Management, Llc | 0.03% | 160,090 | $757,226 | $449,853 | -$307,373 | -40.59% | |
| Steward Partners Investment Advisory, Llc | 0.00% | 153,347 | $725,331 | $430,905 | -$294,426 | -40.59% | |
| Bluefin Capital Management, Llc | 0.20% | 147,698 | $698,612 | $415,031 | -$283,581 | -40.59% | |
| Group One Trading Llc | 0.02% | 117,823 | $557,303 | $331,083 | -$226,220 | -40.59% | |
| Virtu Financial Llc | 0.02% | 114,969 | $544,000 | $323,063 | -$220,937 | -40.61% | |
| Citadel Advisors Llc | 0.00% | 111,043 | $525,234 | $312,031 | -$213,203 | -40.59% | |
| Algert Global Llc | 0.01% | 110,785 | $524,013 | $311,306 | -$212,707 | -40.59% | |
| Ubs Group Ag | 0.00% | 110,336 | $521,889 | $310,044 | -$211,845 | -40.59% | |
| Federation Des Caisses Desjardins Du Quebec | 0.00% | 108,474 | $512,762 | $304,812 | -$207,950 | -40.55% | |
| Susquehanna International Group, Llp | 0.00% | 108,103 | $511,327 | $303,769 | -$207,558 | -40.59% | |
| Silverback Asset Management Llc | 0.06% | 100,000 | $473,000 | $281,000 | -$192,000 | -40.59% | |
| Goldman Sachs Group Inc | 0.00% | 95,843 | $453,337 | $269,319 | -$184,018 | -40.59% | |
| Tudor Investment Corp Et Al | 0.00% | 75,103 | $355,237 | $211,039 | -$144,198 | -40.59% | |
| American Century Companies Inc | 0.00% | 73,701 | $348,606 | $207,100 | -$141,506 | -40.59% | |
| Imc-Chicago, Llc | 0.00% | 67,909 | $321,210 | $190,824 | -$130,386 | -40.59% | |
| Squarepoint Ops Llc | 0.00% | 67,450 | $319,039 | $189,535 | -$129,505 | -40.59% | |
| Fairfax Financial Holdings | Prem Watsa | 0.01% | 62,500 | $296,250 | $175,625 | -$120,625 | -40.72% |
| Barclays Plc | 0.00% | 60,000 | $283,800 | $168,600 | -$115,200 | -40.59% | |
| Eurizon Capital Sgr S.P.A. | 0.00% | 60,955 | $281,871 | $171,284 | -$110,587 | -39.23% | |
| Polunin Capital Partners Ltd | 0.06% | 59,811 | $240,000 | $168,069 | -$71,931 | -29.97% | |
| Bridgeway Capital Management, Llc | 0.00% | 46,141 | $218,247 | $129,656 | -$88,591 | -40.59% | |
| Jpmorgan Chase & Co | 0.00% | 38,588 | $178,277 | $108,432 | -$69,845 | -39.18% | |
| Winton Group Ltd | 0.01% | 34,678 | $164,027 | $97,445 | -$66,582 | -40.59% | |
| Yakira Capital Management, Inc. | 0.05% | 34,675 | $164,013 | $97,437 | -$66,576 | -40.59% | |
| Wesbanco Bank Inc | 0.00% | 30,000 | $141,900 | $84,300 | -$57,600 | -40.59% | |
| State Street Corp | 0.00% | 28,692 | $135,713 | $80,625 | -$55,088 | -40.59% | |
| Hrt Financial Lp | 0.00% | 28,441 | $134,000 | $79,919 | -$54,081 | -40.36% | |
| Tower Research Capital Llc (Trc) | 0.00% | 27,646 | $130,766 | $77,685 | -$53,081 | -40.59% | |
| Citigroup Inc | 0.00% | 23,206 | $109,764 | $65,209 | -$44,555 | -40.59% | |
| Gabelli & Co Investment Advisers, Inc. | 0.02% | 22,505 | $106,449 | $63,239 | -$43,210 | -40.59% | |
| Gabelli Funds Llc | 0.00% | 21,670 | $102,499 | $60,893 | -$41,606 | -40.59% |
Frequently asked questions about MX
Who owns the most MX stock?
The largest holders of MX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MAGNACHIP SEMICONDUCTOR CORP (MX).
Is MX widely held by superinvestors?
Many widely followed stocks like MX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.