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MX in the 13F filings

Magnachip Semiconductor Corp · CUSIP 55933J203

Sector · SemiconductorsTheme · AI infrastructure and semiconductors· L3VLUP-definedTheme · Semiconductors
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
2 Sep 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
15
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 1 listed it in both
Shares listed
8,499,287
combined, among listed positions
Reported value
$40m
combined, at the quarter end

Among the 91 comparable managers: 12 buyers (opened or added shares) and 3 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,441,804.

Managers listing MX in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

15 of 15 holders

ActionFiling
Marshall Wace LLP1,615,488$7.6munder 0.1%Added+370,86613 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP1,501,438$7.1munder 0.1%Added+929,60414 Aug 2026 (the filing on sec.gov)
Oaktree Capital Management LP1,500,000$7.1m0.10%Trimmed-1,349,85814 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,397,759$6.6munder 0.1%Added+1,238,15314 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC963,768$4.5munder 0.1%Added+317,08413 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC661,600$3.1munder 0.1%Added+626,10013 Aug 2026 (the filing on sec.gov)
Millennium Management LLC236,422$1.1munder 0.1%Trimmed-56,51814 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC215,877$1.0munder 0.1%Added+166,10814 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC111,043$525kunder 0.1%Added+22,9692 Sep 2026 (the filing on sec.gov)
Susquehanna International Group LLP108,103$511kunder 0.1%Added+83,75314 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp75,103$355kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC67,450$319kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Winton Group Ltd34,678$164kunder 0.1%Newnew7 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC10,521$50kunder 0.1%Newnew3 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)37$00.00%Held013 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (4)

Exited (1)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
1 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

02462014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MX by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20132$40mn.a.n.a.
Q4 20133$48mn.a.n.a.
Q1 20143$36mn.a.n.a.
Q2 20143$55mn.a.n.a.
Q3 20143$48mn.a.n.a.
Q4 20143$53mn.a.n.a.
Q1 20152$13mn.a.n.a.
Q2 20152$30mn.a.n.a.
Q3 20152$32mn.a.n.a.
Q4 20152$31mn.a.n.a.
Q1 20162$34mn.a.n.a.
Q2 20162$35mn.a.n.a.
Q3 20163$54mn.a.n.a.
Q4 20163$43mn.a.n.a.
Q1 20174$69mn.a.n.a.
Q2 20173$62mn.a.n.a.
Q3 20174$72mn.a.n.a.
Q4 20174$69mn.a.n.a.
Q1 20183$41mn.a.n.a.
Q2 20182$34mn.a.n.a.
Q3 20182$33mn.a.n.a.
Q4 20182$21mn.a.n.a.
Q1 20192$24mn.a.n.a.
Q2 20193$35mn.a.n.a.
Q3 20192$40mn.a.n.a.
Q4 20194$52mn.a.n.a.
Q1 20203$39mn.a.n.a.
Q2 20203$47mn.a.n.a.
Q3 20204$73mn.a.n.a.
Q4 20202$59mn.a.n.a.
Q1 20216$108mn.a.n.a.
Q2 20213$65mn.a.n.a.
Q3 20212$37mn.a.n.a.
Q4 20211$48mn.a.n.a.
Q1 20221$39mn.a.n.a.
Q2 20221$33mn.a.n.a.
Q3 20221$24mn.a.n.a.
Q4 20223$22mn.a.n.a.
Q1 20233$22mn.a.n.a.
Q2 20233$32mn.a.n.a.
Q3 20233$24mn.a.n.a.
Q4 20232$22m00
Q1 20241$16m01
Q2 20241$14m00
Q3 20241$13m00
Q4 20241$11m00
Q1 20251$9.8m00
Q2 20251$11m00
Q3 20251$8.9m00
Q4 20251$7.3m67
Q1 20261$8.0m74
Q2 20261$7.1m123

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MX and NVDA →MX and AVGO →MX and MU →Choose a stock to compare with MX →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MX, latest filings →Back to the 13F Explorer →