Public ownership evidence

Magnachip Semiconductor Corp. (MX) Ownership Disclosures

Read MX insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Magnachip Semiconductor Corp.: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-25
Trade date
2026-09-24
Reporting owners
LEE CHAE
Code
P
Shares
20,000
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001193125-26-402849
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read MX fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read MX fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity
2026-09-252026-09-24LEE CHAEP20,000Not reported
2026-09-252026-09-23LEE CHAEP30,000Not reported
2026-09-252026-09-23LEE CHAEP50,000Not reported
2026-08-192026-08-15MARTINO CAMILLOA6,764Not reported
2026-08-042026-08-01MARTINO CAMILLOA39,286Not reported
2026-08-042026-08-01Chung Kyo-Hwa LizA48,810Not reported
2026-08-042026-08-01NATHAN GILBERT EA51,191Not reported
2026-08-042026-08-01Amoruso CristianoA46,429Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Federation des caisses Desjardins du Quebec2026-06-302026-08-15106,974$505,667None
Federation des caisses Desjardins du Quebec2026-06-302026-08-151,500$7,095None
Ameritas Advisory Services, LLC2026-06-302026-08-15946$4,475None
Owlhouse Capital LP2026-06-302026-08-1513,140$62,152None
NFSG Corp2026-06-302026-08-155,925$28,025None
XTX Topco Ltd2026-06-302026-08-15222,197$1,050,992None
FourWorld Capital Management LLC2026-06-302026-08-151,600,695$7,571,287None
Qube Research & Technologies Ltd2026-06-302026-08-15382,383$1,808,672None
Caption Management, LLC2026-06-302026-08-151,000,000$4,730,000Put
Caption Management, LLC2026-06-302026-08-15170,000$804,100Call
Caption Management, LLC2026-06-302026-08-15160,090$757,226None
OSAIC HOLDINGS, INC.2026-06-302026-08-157,193$34,022None
Squarepoint Ops LLC2026-06-302026-08-1567,450$319,039None
Trexquant Investment LP2026-06-302026-08-15285,909$1,352,350None
JANE STREET GROUP, LLC2026-06-302026-08-1517,287$81,768None
JANE STREET GROUP, LLC2026-06-302026-08-15198,590$939,331None
JANE STREET GROUP, LLC2026-06-302026-08-1577,500$366,575Put
JANE STREET GROUP, LLC2026-06-302026-08-15373,100$1,764,763Call
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-15200,081$946,383None
HRT FINANCIAL LP2026-06-302026-08-1528,441$134,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15478,500$2,263,305Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15215,400$1,018,842Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15108,103$511,327None
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC2026-06-302026-08-1519,066$90,182None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15236,422$1,118,276None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15161,000$761,530Call
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-151,000$4,650None
BLUEFIN CAPITAL MANAGEMENT, LLC2026-06-302026-08-1511,800$33,630Put
BLUEFIN CAPITAL MANAGEMENT, LLC2026-06-302026-08-1560,600$15,075Call
BLUEFIN CAPITAL MANAGEMENT, LLC2026-06-302026-08-15147,698$698,612None
ROYAL BANK OF CANADA2026-06-302026-08-15688$3,000None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-1546,141$218,247None
D. E. Shaw & Co., Inc.2026-06-302026-08-151,397,759$6,611,400None
CITADEL ADVISORS LLC2026-06-302026-08-15116,600$551,518Put
CITADEL ADVISORS LLC2026-06-302026-08-15110,890$524,510None
CITADEL ADVISORS LLC2026-06-302026-08-15150,400$711,392Call
CITADEL ADVISORS LLC2026-06-302026-08-15153$724None
FAIRFAX FINANCIAL HOLDINGS LTD/ CAN2026-06-302026-08-1562,500$296,250None
OAKTREE CAPITAL MANAGEMENT LP2026-06-302026-08-151,500,000$7,095,000None
OAKTREE CAPITAL MANAGEMENT LP2026-06-302026-08-151,000,000$4,730,000Call
GROUP ONE TRADING LLC2026-06-302026-08-15117,823$557,303None
NOMURA HOLDINGS INC2026-06-302026-08-151,000,000$4,730,000Call
TUDOR INVESTMENT CORP ET AL2026-06-302026-08-1585,100$402,523Call
TUDOR INVESTMENT CORP ET AL2026-06-302026-08-1575,103$355,237None
TWO SIGMA INVESTMENTS, LP2026-06-302026-08-151,501,438$7,101,802None
GOLDMAN SACHS GROUP INC2026-06-302026-08-1595,843$453,337None
BARCLAYS PLC2026-06-302026-08-1560,000$283,800None
VANGUARD PORTFOLIO MANAGEMENT LLC2026-06-302026-08-14239,694$1,133,753None
Rockefeller Capital Management L.P.2026-06-302026-08-1410,000$47,300None
Steward Partners Investment Advisory, LLC2026-06-302026-08-14153,347$725,331None

90-day public filing window, up to 50 source positions.

Federation des caisses Desjardins du Quebec ↗Federation des caisses Desjardins du Quebec ↗Ameritas Advisory Services, LLC ↗Owlhouse Capital LP ↗NFSG Corp ↗XTX Topco Ltd ↗FourWorld Capital Management LLC ↗Qube Research & Technologies Ltd ↗Caption Management, LLC ↗Caption Management, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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