Magnachip Semiconductor Corporation
Magnachip Semiconductor Corporation (MX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MX · as of Sep 30, 2024
Ownership Breakdown
95
Institutional Holders
▼ 1 vs Q2
$104.89M
Total Inst. Value
▼ $4.90M vs Q2
36.44M
Shares Outstanding
freeFloat 75.26%
22.33M
13F Shares Held
▼ 212,410 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MX largest shareholders · institutional ownership
Q3 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
OAKTREE CAPITAL MANAGEMENT LP semiconductors & related devices | 2.85M | 7.61% | 7.61% | $13.31B | Nov 14, 2024 | — held |
SYSTEMATIC FINANCIAL MANAGEMENT LP semiconductors & related devices | 2.10M | 5.60% | 5.60% | $9.80B | Nov 14, 2024 | ▼ 17.3K |
CLEARLINE CAPITAL LP semiconductors & related devices | 1.80M | 4.81% | 4.81% | $8.41B | Nov 14, 2024 | ▲ 117.1K |
FMR LLC semiconductors & related devices | 1.25M | 3.33% | 3.33% | $5.82B | Nov 13, 2024 | ▼ 5 |
DIMENSIONAL FUND ADVISORS LP semiconductors & related devices | 1.11M | 2.97% | 2.97% | $5.19B | Nov 7, 2024 | ▼ 121.0K |
VANGUARD GROUP INC semiconductors & related devices | 1.05M | 2.81% | 2.81% | $4.92B | Nov 13, 2024 | ▼ 55.9K |
QUINN OPPORTUNITY PARTNERS LLC semiconductors & related devices | 763.6K | 2.04% | 2.04% | $3.57B | Nov 13, 2024 | — held |
SUSQUEHANNA INTERNATIONAL GROUP, LLP semiconductors & related devices | 707.5K | 1.89% | 1.89% | $3.30B | Nov 14, 2024 | ▼ 153.7K |
S SQUARED TECHNOLOGY, LLC semiconductors & related devices | 689.7K | 1.84% | 1.84% | $3.22B | Nov 14, 2024 | — held |
AMERIPRISE FINANCIAL INC semiconductors & related devices | 686.2K | 1.83% | 1.83% | $3.20B | Nov 14, 2024 | ▼ 214.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2024 vs prior quarter
Q3 2024
15
Increased
+771.0K shares4
New Positions
first time holders22
Decreased
−1.29M shares0
Sold Out
fully exitedNet shares change (top 50)
518.2K
+771.0K / −1.29M
Net new holders
-3
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MX insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
6
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
NATHAN GILBERT E director | Mar 16, 2026 | Purchase | 21,994 | $2.87 | $63.1K | 158.2K | Form 4 ↗ |
NATHAN GILBERT E director | Mar 13, 2026 | Purchase | 13,006 | $2.79 | $36.2K | 136.2K | Form 4 ↗ |
NATHAN GILBERT E director | Mar 12, 2026 | Purchase | 25,000 | $2.75 | $68.7K | 123.2K | Form 4 ↗ |
NATHAN GILBERT E director | Feb 15, 2026 | Award | 1,478 | — | — | 214.5K | Form 4 ↗ |
Chung Kyo-Hwa Liz director | Feb 15, 2026 | Award | 2,946 | — | — | 100.8K | Form 4 ↗ |
Amoruso Cristiano director | Feb 15, 2026 | Award | 28,628 | — | — | 28.6K | Form 4 ↗ |
Lee Seunghoon See Remarks | Dec 31, 2025 | Award | 7,000 | $2.55 | $17.9K | 144.0K | Form 4 ↗ |
Lee Seunghoon See Remarks | Dec 31, 2025 | Tax Withhold | 3,333 | $2.55 | $8.5K | 140.6K | Form 4 ↗ |
Lee Seunghoon See Remarks | Dec 31, 2025 | Tax Withhold | 2,778 | $2.55 | $7.1K | 137.8K | Form 4 ↗ |
Lee Seunghoon See Remarks | Aug 15, 2025 | Award | 30,750 | — | — | 137.0K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Magnachip Semiconductor Corporation (MX) is primarily owned by institutional investors, who hold approximately 61.3% of total shares outstanding. Company insiders own approximately 24.74%, while retail and public investors account for the remaining 13.98%.
The largest institutional shareholder of Magnachip Semiconductor Corporation is OAKTREE CAPITAL MANAGEMENT LP, holding approximately 2.85 million shares — equal to 7.61% of outstanding shares — as of September 30, 2024.
A total of 95 institutional investors currently hold MX stock, with a combined institutional value of approximately $104,888,994 as of the most recent 13F filing period.
Frequently asked questions
MX ownershipMagnachip Semiconductor Corporation (MX) is primarily owned by institutional investors, who hold approximately 61.3% of shares. The largest shareholder is OAKTREE CAPITAL MANAGEMENT LP with a 7.61% stake. Company insiders hold 24.74%. Data sourced from SEC Form 13F as of September 30, 2024.