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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
31 Mar 2026
the date the book describes
Filed
20 May 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
12
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 1 listed it in both
Shares listed
6,057,483
combined, among listed positions
Reported value
$17m
combined, at the quarter end

Among the 91 comparable managers: 7 buyers (opened or added shares) and 4 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +211,665.

Managers listing MX in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

12 of 12 holders

ActionFiling
Oaktree Capital Management LP2,849,858$8.0m0.12%Held020 May 2026 (the filing on sec.gov)
Marshall Wace LLP1,244,622$3.5munder 0.1%Trimmed-41,21015 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC646,684$1.8munder 0.1%Added+64,82813 May 2026 (the filing on sec.gov)
Two Sigma Investments LP571,834$1.6munder 0.1%Added+259,17015 May 2026 (the filing on sec.gov)
Millennium Management LLC292,940$820kunder 0.1%Added+4,10315 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.159,606$447kunder 0.1%Added+21,65715 May 2026 (the filing on sec.gov)
Point72 Asset Management LP94,209$264kunder 0.1%Added+30,71415 May 2026 (the filing on sec.gov)
Citadel Advisors LLC88,074$247kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Jane Street Group LLC49,769$139kunder 0.1%Trimmed-54,45912 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC35,500$99kunder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP24,350$68kunder 0.1%Trimmed-94,80515 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)37$00.00%Held015 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 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 (2)

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 →