Vault-13

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.

76 institutional holders +5 vs Q1 2026
15,640,90015.6m shares reported held*
42.8% of all shares outstanding*
$73.9mreported value*
24 new 23 added 23 reduced 17 sold out net sold ≈ $15.4m (-3.2m shares)

* 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. Holder counts are more reliable. Shares outstanding: 36.5m as of 2026-07-31, 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 ≈ $4.73. Options: 14 managers hold calls ($21.1m notional), 9 hold puts ($9.7m).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 129Q4 22: 119Q1 23: 117Q2 23: 116Q3 23: 118Q4 23: 124Q1 24: 104Q2 24: 90Q3 24: 89Q4 24: 83Q1 25: 89Q2 25: 92Q3 25: 75Q4 25: 69Q1 26: 71Q2 26: 7676Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 2022129
Q4 2022119
Q1 2023117
Q2 2023116
Q3 2023118
Q4 2023124
Q1 2024104
Q2 202490
Q3 202489
Q4 202483
Q1 202589
Q2 202592
Q3 202575
Q4 202569
Q1 202671
Q2 202676

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
50050Q3 24: 33 bought or addedQ3 24: 40 cut or sold outQ4 24: 32 bought or addedQ4 24: 40 cut or sold outQ4 24Q1 25: 31 bought or addedQ1 25: 42 cut or sold outQ2 25: 42 bought or addedQ2 25: 38 cut or sold outQ2 25Q3 25: 30 bought or addedQ3 25: 46 cut or sold outQ4 25: 25 bought or addedQ4 25: 43 cut or sold outQ4 25Q1 26: 32 bought or addedQ1 26: 33 cut or sold outQ2 26: 47 bought or addedQ2 26: 40 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20243340
Q4 20243240
Q1 20253142
Q2 20254238
Q3 20253046
Q4 20252543
Q1 20263233
Q2 20264740

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$10m$20m$30mQ3 25 calls: $53.4kQ3 25 puts: $56.8kQ3 25P/C 1.06Q4 25 calls: $75.5kQ4 25 puts: $143.6kQ4 25P/C 1.90Q1 26 calls: $99.4kQ1 26 puts: $105.6kQ1 26P/C 1.06Q2 26 calls: $21.1mQ2 26 puts: $9.7mQ2 26P/C 0.46
Numbers
QuarterCallsPutsP/C
Q3 2025$53.4k$56.8k1.06
Q4 2025$75.5k$143.6k1.90
Q1 2026$99.4k$105.6k1.06
Q2 2026$21.1m$9.7m0.46

Biggest buyers

D. E. Shaw & Co., Inc. Added +1,238,153+1.2m
TWO SIGMA INVESTMENTS, LP Added +929,604+929.6k
RENAISSANCE TECHNOLOGIES LLC Added +626,100+626.1k
Qube Research & Technologies Ltd New +382,383+382.4k
MARSHALL WACE, LLP Added +370,866+370.9k
ACADIAN ASSET MANAGEMENT LLC Added +317,084+317.1k
Connor, Clark & Lunn Investment Management Ltd. Added +316,129+316.1k
Trexquant Investment LP New +285,909+285.9k
XTX Topco Ltd New +222,197+222.2k
JANE STREET GROUP, LLC Added +166,108+166.1k

Biggest sellers

AMERIPRISE FINANCIAL INC Sold out -1,583,589-1.6m
IMMERSION CORP Sold out -1,383,402-1.4m
OAKTREE CAPITAL MANAGEMENT LP Reduced -1,349,858-1.3m
Clearline Capital LP Sold out -1,114,590-1.1m
FIRST WILSHIRE SECURITIES MANAGEMENT INC Sold out -743,953-744.0k
STATE OF WISCONSIN INVESTMENT BOARD Sold out -557,617-557.6k
PRELUDE CAPITAL MANAGEMENT, LLC Sold out -403,627-403.6k
Potomac Capital Management, Inc. Sold out -365,000-365.0k
BlackRock, Inc. Reduced -195,215-195.2k
BRIDGEWAY CAPITAL MANAGEMENT, LLC Reduced -187,754-187.8k

Biggest calls

OAKTREE CAPITAL MANAGEMENT LP New $4.7m1.0m shares
NOMURA HOLDINGS INC New $4.7m1.0m shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $2.3m478.5k shares
PEAK6 LLC New $1.9m400.0k shares
JANE STREET GROUP, LLC New $1.8m373.1k shares
GROUP ONE TRADING LLC Added $1.2m259.7k shares
SIMPLEX TRADING, LLC Added $1.2m256.4k shares
Caption Management, LLC New $804.1k170.0k shares
MILLENNIUM MANAGEMENT LLC New $761.5k161.0k shares
CITADEL ADVISORS LLC Added $711.4k150.4k shares

Biggest puts

Caption Management, LLC New $4.7m1.0m shares
HRT FINANCIAL LP New $2.4m500.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $1.0m215.4k shares
CITADEL ADVISORS LLC New $551.5k116.6k shares
GROUP ONE TRADING LLC Added $379.8k80.3k shares
JANE STREET GROUP, LLC New $366.6k77.5k shares
IMC-Chicago, LLC New $200.6k42.4k shares
SIMPLEX TRADING, LLC Added $50.6k10.7k shares
BLUEFIN CAPITAL MANAGEMENT, LLC New $33.6k11.8k 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.

HolderStakeChangeShares Last filed
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% no change 3.1m≈ $14.5m 2026-01-20
TORO 18 HOLDINGS LLC 13G · passive investor new · filed 2025-01-02 8.0% new 3.0m≈ $14.0m 2025-01-02

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 since 1 Apr 2026

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)

BuyingSelling
404Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 3 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 2 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 1 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 1 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20253$224.0k0——
Q2 20250—0——
Q3 20252$113.9k0——
Q4 20250—0——
Q1 20261$168.2k0——
Q2 20260—0——
Q3 20261$318.6k0——
DateInsiderTradeSharesPrice ValueTheir holding
2026-09-24 LEE CHAE Chief Executive Officer, director Bought 20,000 $3.22 $64.4k20.0k shares +5%
2026-09-23 LEE CHAE Chief Executive Officer, director Bought 80,000 $3.18 $254.2k80.0k shares +28%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MARSHALL WACE, LLP 0.01% of their portfolio LONDON, X0 1,615,4881.6m $7.6m $7.6m 0.01% Added +370.9k +370,866
2 FourWorld Capital Management LLC 9.66% of their portfolio NEW YORK, NY 1,600,6951.6m $7.6m $7.6m 9.66% Reduced -57.0k -57,006
3 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 1,501,4381.5m $7.1m $7.1m 0.01% Added +929.6k +929,604
4 OAKTREE CAPITAL MANAGEMENT LP 0.13% of their portfolio LOS ANGELES, CA 1,500,0001.5m $7.1m $7.1m 0.13% Reduced -1.3m -1,349,858
5 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 1,397,7591.4m $6.6m $6.6m 0.00% Added +1.2m +1,238,153
6 ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio Boston, MA 963,768963.8k $4.5m $4.5m 0.01% Added +317.1k +317,084
7 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 661,600661.6k $3.1m $3.1m 0.00% Added +626.1k +626,100
8 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 544,125544.1k $2.6m $2.6m 0.00% Reduced -166.3k -166,319
9 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 475,648475.6k $2.2m $2.2m 0.00% Reduced -73.5k -73,458
10 Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio VANCOUVER, A1 412,849412.8k $2.0m $2.0m 0.00% Added +316.1k +316,129
11 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 382,383382.4k $1.8m $1.8m 0.00% New
12 Trexquant Investment LP 0.01% of their portfolio STAMFORD, CT 285,909285.9k $1.4m $1.4m 0.01% New
13 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 265,146265.1k $1.3m $1.3m 0.00% Reduced -64.2k -64,222
14 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 239,694239.7k $1.1m $1.1m 0.00% Unchanged
15 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 236,422236.4k $1.1m $1.1m 0.00% Reduced -56.5k -56,518
16 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 222,197222.2k $1.1m $1.1m 0.01% New
17 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 215,877215.9k $1.0m $1.0m 0.00% Added +166.1k +166,108
18 ODDO BHF ASSET MANAGEMENT SAS 0.05% of their portfolio PARIS, I0 215,098215.1k $1.0m $1.0m 0.05% Unchanged
19 BOOTHBAY FUND MANAGEMENT, LLC 0.02% of their portfolio NEW YORK, NY 200,081200.1k $946.4k $946.4k 0.02% Reduced -7.1k -7,125
20 GSA CAPITAL PARTNERS LLP 0.06% of their portfolio LONDON, X0 199,954200.0k $946.0k $946.0k 0.06% Reduced -80.7k -80,705
21 Caption Management, LLC 0.03% of their portfolio OKLAHOMA CITY, OK 160,090160.1k $757.2k $757.2k 0.03% New
22 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 153,347153.3k $725.3k $725.3k 0.00% Reduced -43.7k -43,655
23 BLUEFIN CAPITAL MANAGEMENT, LLC 0.20% of their portfolio NEW YORK, NY 147,698147.7k $698.6k $698.6k 0.20% New
24 GROUP ONE TRADING LLC 0.02% of their portfolio CHICAGO, IL 117,823117.8k $557.3k $557.3k 0.02% Added +94.2k +94,157
25 Virtu Financial LLC 0.02% of their portfolio New York, NY 114,969115.0k $544.0k $544.0k 0.02% New
26 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 111,043111.0k $525.2k $525.2k 0.00% Added +23.0k +22,969
27 ALGERT GLOBAL LLC 0.01% of their portfolio SAN FRANCISCO, CA 110,785110.8k $524.0k $524.0k 0.01% Added +52.1k +52,090
28 UBS Group AG 0.00% of their portfolio ZURICH, V8 110,336110.3k $521.9k $521.9k 0.00% Reduced -73.1k -73,110
29 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 108,474108.5k $512.8k $512.8k 0.00% Added +84.0k +84,038
30 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 108,103108.1k $511.3k $511.3k 0.00% Added +83.8k +83,753
31 SILVERBACK ASSET MANAGEMENT LLC 0.06% of their portfolio DURHAM, NC 100,000100.0k $473.0k $473.0k 0.06% Reduced -120.0k -120,000
32 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 95,84395.8k $453.3k $453.3k 0.00% Reduced -104.8k -104,800
33 TUDOR INVESTMENT CORP ET AL 0.00% of their portfolio STAMFORD, CT 75,10375.1k $355.2k $355.2k 0.00% New
34 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 73,70173.7k $348.6k $348.6k 0.00% Added +1.1k +1,058
35 IMC-Chicago, LLC 0.00% of their portfolio CHICAGO, IL 67,90967.9k $321.2k $321.2k 0.00% New
36 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 67,45067.5k $319.0k $319.0k 0.00% New
37 FAIRFAX FINANCIAL HOLDINGS LTD/ CAN 0.01% of their portfolio TORONTO, A6 62,50062.5k $296.2k $296.2k 0.01% Reduced -62.5k -62,500
38 Eurizon Capital SGR S.p.A. 0.00% of their portfolio MILAN, L6 60,95561.0k $281.9k $281.9k 0.00% Reduced -10.0k -9,989
39 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 60,00060.0k $283.8k $283.8k 0.00% Added +54.2k +54,218
40 Polunin Capital Partners Ltd 0.06% of their portfolio LONDON, X0 59,81159.8k $240.0k $240.0k 0.06% Added +2.8k +2,800
41 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio HOUSTON, TX 46,14146.1k $218.2k $218.2k 0.00% Reduced -187.8k -187,754
42 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 38,58838.6k $178.3k $178.3k 0.00% Reduced -87.7k -87,738
43 WINTON GROUP Ltd 0.01% of their portfolio LONDON, X0 34,67834.7k $164.0k $164.0k 0.01% New
44 Yakira Capital Management, Inc. 0.05% of their portfolio Westport, CT 34,67534.7k $164.0k $164.0k 0.05% Reduced -63.3k -63,325
45 WESBANCO BANK INC 0.00% of their portfolio WHEELING, WV 30,00030.0k $141.9k $141.9k 0.00% New
46 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 28,69228.7k $135.7k $135.7k 0.00% Added +295 +295
47 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 28,44128.4k $134.0k $134.0k 0.00% Added +9.3k +9,293
48 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 27,64627.6k $130.8k $130.8k 0.00% Added +27.2k +27,208
49 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 23,20623.2k $109.8k $109.8k 0.00% New
50 GABELLI & Co INVESTMENT ADVISERS, INC. 0.02% of their portfolio Rye, NY 22,50522.5k $106.4k $106.4k 0.02% Reduced -55.0k -54,970
51 GABELLI FUNDS LLC 0.00% of their portfolio Rye, NY 21,67021.7k $102.5k $102.5k 0.00% Reduced -95.1k -95,132
52 SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.00% of their portfolio BALA CYNWYD, PA 19,06619.1k $90.2k $90.2k 0.00% New
53 AXQ CAPITAL, LP 0.01% of their portfolio JERSEY CITY, NJ 18,21218.2k $86.1k $86.1k 0.01% Reduced -14.2k -14,232
54 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 17,68517.7k $83.7k $83.7k 0.00% Added +5.8k +5,753
55 FOX RUN MANAGEMENT, L.L.C. 0.01% of their portfolio GREENWICH, CT 16,46116.5k $77.9k $77.9k 0.01% New
56 Accurate Wealth Management, LLC 0.01% of their portfolio WESLEY CHAPEL, FL 15,00015.0k $60.3k $60.3k 0.01% New
57 BlackRock, Inc. 0.00% of their portfolio New York, NY 13,37713.4k $63.3k $63.3k 0.00% Reduced -195.2k -195,215
58 Owlhouse Capital LP 0.10% of their portfolio NEW YORK, NY 13,14013.1k $62.2k $62.2k 0.10% New
59 Caitong International Asset Management Co., Ltd 0.01% of their portfolio HONG KONG, K3 13,09213.1k $61.9k $61.9k 0.01% Added +13.1k +13,090
60 C2P Capital Advisory Group, LLC d.b.a. Prosperity Capital Advisors 0.00% of their portfolio Westlake, OH 11,47511.5k $54.3k $54.3k 0.00% New
61 StoneX Group Inc. 0.00% of their portfolio NEW YORK, NY 10,62510.6k $57.5k $57.5k 0.00% New
62 Centiva Capital, LP 0.00% of their portfolio New York, NY 10,57310.6k $50.0k $50.0k 0.00% Reduced -32.8k -32,799
63 Walleye Capital LLC 0.00% of their portfolio NEW YORK, NY 10,52110.5k $49.8k $49.8k 0.00% New
64 Rockefeller Capital Management L.P. 0.00% of their portfolio NEW YORK, NY 10,00010.0k $47.3k $47.3k 0.00% New
65 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 7,1937.2k $34.0k $34.0k 0.00% Unchanged
66 NFSG Corp 0.00% of their portfolio BOCA RATON, FL 5,9255.9k $28.0k $28.0k 0.00% Added +1.2k +1,200
67 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 3,2253.2k $15.3k $15.3k 0.00% Added +3.1k +3,078
68 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 2,2962.3k $10.9k $10.9k 0.00% Added +1.2k +1,240
69 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 1,0001.0k $4.7k $4.7k 0.00% Unchanged
70 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 1,0001.0k $4.7k $4.7k 0.00% New
71 Ameritas Advisory Services, LLC 0.00% of their portfolio Lincoln, NE 946946 $4.5k $4.5k 0.00% New
72 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 688688 $3.0k $3.0k 0.00% Reduced -1.2k -1,246
73 TD Waterhouse Canada Inc. 0.00% of their portfolio TORONTO, A6 500500 $2.2k $2.2k 0.00% New
74 SALEM INVESTMENT COUNSELORS INC 0.00% of their portfolio WINSTON-SALEM, NC 300300 $1.4k $1.4k 0.00% Unchanged
75 Integrated Wealth Concepts LLC 0.00% of their portfolio WALTHAM, MA 250250 $1.2k $1.2k 0.00% New
76 FMR LLC 0.00% of their portfolio BOSTON, MA 3737 $175 $175 0.00% Unchanged