Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | OAKTREE CAPITAL MANAGEMENT LP | 2.8M | $8.0M | 0.0% | 7.821% | 0.14% |
| 2 | FourWorld Capital Management LLC | 1.7M | $4.6M | +667.1% | 4.549% | 2.45% |
| 3 | AMERIPRISE FINANCIAL INC | 1.6M | $4.4M | +9.2% | 4.346% | 0.00% |
| 4 | IMMERSION CORP | 1.4M | $3.9M | -26.4% | 3.796% | 2.68% |
| 5 | MARSHALL WACE, LLP | 1.2M | $3.5M | -3.2% | 3.415% | 0.00% |
| 6 | Clearline Capital LP | 1.1M | $3.1M | -23.7% | 3.059% | 0.24% |
| 7 | FIRST WILSHIRE SECURITIES MANAGEMENT INC | 744K | $2.1M | +1.5% | 2.042% | 0.47% |
| 8 | MORGAN STANLEY | 710K | $2.0M | -1.4% | 1.950% | 0.00% |
| 9 | TWO SIGMA INVESTMENTS, LP | 572K | $1.6M | +82.9% | 1.569% | 0.00% |
| 10 | STATE OF WISCONSIN INVESTMENT BOARD | 558K | $1.6M | -7.1% | 1.530% | 0.00% |
| 11 | DIMENSIONAL FUND ADVISORS LP | 549K | $1.5M | -33.7% | 1.507% | 0.00% |
| 12 | PRELUDE CAPITAL MANAGEMENT, LLC | 404K | $1.1M | +60.4% | 1.108% | 0.09% |
| 13 | Potomac Capital Management, Inc. | 365K | $1.0M | -5.7% | 1.002% | 0.89% |
| 14 | BNP PARIBAS ARBITRAGE, SA | 329K | $922K | +0.5% | 0.904% | 0.00% |
| 15 | MILLENNIUM MANAGEMENT LLC | 293K | $820K | +1.4% | 0.804% | 0.00% |
| 16 | VANGUARD PORTFOLIO MANAGEMENT LLC | 240K | $671K | — | 0.658% | 0.00% |
| 17 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 234K | $655K | -42.8% | 0.642% | 0.01% |
| 18 | SILVERBACK ASSET MANAGEMENT LLC | 220K | $616K | 0.0% | 0.604% | 0.12% |
| 19 | ODDO BHF ASSET MANAGEMENT SAS | 215K | $602K | 0.0% | 0.590% | 0.02% |
| 20 | BlackRock, Inc. | 209K | $584K | 0.0% | 0.572% | 0.00% |
| 21 | BOOTHBAY FUND MANAGEMENT, LLC | 207K | $580K | +667.2% | 0.569% | 0.01% |
| 22 | GOLDMAN SACHS GROUP INC | 201K | $562K | -52.3% | 0.551% | 0.00% |
| 23 | Steward Partners Investment Advisory, LLC | 197K | $552K | +0.5% | 0.541% | 0.00% |
| 24 | UBS Group AG | 183K | $514K | +2.1% | 0.503% | 0.00% |
| 25 | D. E. Shaw & Co., Inc. | 160K | $447K | +15.7% | 0.438% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MX — a direct measure of their conviction.
Filings activity in MX during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 69 | +1.5% | 21.69% | 1.25 pp | $49M | 5.5% |
| Q4 2025 | 68 | 8.1% | 22.94% | 6.40 pp | $52M | 22% |
| Q3 2025 | 74 | 20% | 29.34% | 10.25 pp | $67M | 26% |
| Q2 2025 | 92 | +4.5% | 39.59% | +6.76 pp | $90M | +21% |
| Q1 2025 | 88 | +7.3% | 32.83% | 167.16 pp | $75M | 95% |
| Q4 2024 | 82 | 4.7% | 199.99% | +154.73 pp | $1.40B | +1256% |
| Q3 2024 | 86 | 1.1% | 45.26% | 2.75 pp | $103M | 5.7% |
| Q2 2024 | 87 | — | 48.01% | — | $109M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MX stock.
Based on Q1 2026 13F filings, institutional ownership of Magnachip Semiconductor Corporation stands at 21.7%, held across 69 reporting institutions.
OAKTREE CAPITAL MANAGEMENT LP is the largest reported institutional holder of MX, with approximately 2,849,858 shares worth $0.01B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of MX, including TWO SIGMA INVESTMENTS, LP, MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for MX is 46 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
15 institutions opened new positions in MX during Q1 2026, while 14 fully exited. 39 added to existing positions and 14 trimmed.
MX institutional ownership fell by 1.25 percentage points quarter-over-quarter, with a net change of +1 holders.
The top 10 institutions account for 70.4% of all reported 13F value in MX, and the top 25 account for 93.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Magnachip Semiconductor Corporation (MX) Institutional Ownership