매그나칩반도체(주)
US ˙ NYSE ˙ US55933J2033

SecurityMX / Magnachip Semiconductor Corporation
InstitutionJpmorgan Chase & Co
Latest Disclosed Ownership126,326 shares
Latest Disclosed Value $ 341,080
Jpmorgan Chase & Co ownership in MX / Magnachip Semiconductor Corporation

On May 13, 2026 - Jpmorgan Chase & Co filed a 13F-HR/A form disclosing ownership of 126,326 shares of Magnachip Semiconductor Corporation (US:MX) valued at $353,713 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 128,262 shares of Magnachip Semiconductor Corporation. This represents a change in shares of -1.51% during the quarter. The current value of the position is $1,080,087 USD.

Jpmorgan Chase & Co has a history of taking positions in derivatives of the underlying security (MX) in the form of stock options.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX / Magnachip Semiconductor Corporation Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 126,326 -1,936 -1.51 341 4.28 0.0000
2026-05-13 2026-03-31 13F MAGNACHIP SEMICONDUCTOR COR COMMON 55933J203 0 -100.00 0
2026-02-11 2025-12-31 13F MAGNACHIP SEMICONDUCTOR COR COMMON 55933J203 128,262 8,130 6.77 327 -13.03 0.0000
2025-11-26 2025-09-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 120,132 -10,278 -7.88 376 -27.55 0.0000
2025-11-07 2025-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 120,132 -10,278 376 0.0000
2025-08-12 2025-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 130,410 -9,002 -6.46 519 8.58 0.0000
2025-05-12 2025-03-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 139,412 16,175 13.13 478 -3.43 0.0000
2025-02-12 2024-12-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 123,237 35,008 39.68 495 20.15 0.0000
2024-12-26 2024-09-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 88,229 -9,106 -9.36 412 -13.08 0.0000
2024-11-08 2024-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 88,229 -9,106 412 0.0000
2024-12-26 2024-06-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 97,335 77,738 396.68 474 334.86 0.0000
2024-08-12 2024-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 97,335 77,738 474 0.0000
2024-12-26 2024-03-31 13F/A-1 Magnachip Semiconductor COMMON 55933J203 19,597 -80,599 -80.44 109 -85.49 0.0000
2024-05-10 2024-03-31 13F Magnachip Semiconductor COMMON 55933J203 19,597 -80,599 109 0.0000
2024-12-26 2023-12-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 100,196 50,346 100.99 751 81.40 0.0001
2024-02-12 2023-12-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 100,196 50,346 751 0.0001
2023-11-14 2023-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 49,850 49,610 20,670.83 414 20,600.00 0.0000
2023-08-11 2023-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 240 -1,545 -86.55 3 -87.50 0.0000
2023-05-18 2023-03-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 1,785 575 47.52 16 0.0000
2023-05-11 2023-03-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 1,785 16
2023-02-13 2022-12-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 1,210 30 2.54 0 -100.00 0.0000
2022-11-14 2022-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 1,180 -89,026 -98.69 12 -99.08 0.0000
2022-08-11 2022-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 90,206 74,668 480.55 1,310 398.10 0.0002
2022-05-11 2022-03-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 15,538 15,321 7,060.37 263 5,160.00 0.0000
2022-02-11 2021-12-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 217 -184,676 -99.88 5 -99.85 0.0000
2022-02-10 2021-12-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 217 5
2021-11-12 2021-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 184,893 -21,639 -10.48 3,283 -33.38 0.0004
2021-08-12 2021-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 206,532 117,590 132.21 4,928 122.48 0.0006
2021-05-12 2021-03-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 88,942 85,133 2,235.05 2,215 4,159.62 0.0003
2021-02-19 2020-12-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 3,809 1,809 90.45 52 85.71 0.0000
2021-02-11 2020-12-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 3,809 1,809 52 1.2860
2020-11-12 2020-09-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON 55933J203 2,000 -44,998 -95.74 28 -94.21 0.0000
2020-11-12 2020-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 2,000 28
2020-08-11 2020-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 46,998 -221,714 -82.51 484 -83.70 0.0001
2020-05-12 2020-03-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 268,712 64,450 31.55 2,969 43.36 0.0007
2019-11-12 2019-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 204,262 8,662 4.43 2,071 2.78 0.0004
2019-08-07 2019-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 195,600 161,725 477.42 2,015 702.79 0.0004
2019-05-07 2019-03-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 33,875 22,896 208.54 251 269.12 0.0001
2019-02-11 2018-12-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 10,979 -114,184 -91.23 68 -94.70 0.0000
2018-08-14 2018-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 125,163 115,623 1,211.98 1,283 1,099.07 0.0003
2017-11-09 2017-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 9,540 -42,846 -81.79 107 -79.14 0.0000
2017-08-09 2017-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 52,386 -4,672 -8.19 513 -5.87 0.0001
2017-05-10 2017-03-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 57,058 34,859 157.03 545 294.93 0.0001
2017-02-06 2016-12-31 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 22,199 -64,074 -74.27 138 -80.83 0.0000
2016-11-04 2016-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 86,273 71,245 474.08 720 747.06 0.0002
2016-08-08 2016-06-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 15,028 -3,072 -16.97 85 -28.57 0.0000
2015-11-13 2015-09-30 13F MAGNACHIP SEMICONDUCTOR COMMON 55933J203 18,100 -201,690 -91.76 119 -96.12 0.0000
2014-05-15 2014-03-31 13F MAGNACHIP SEMICONDUCTOR CORP N COMMON 55933J203 219,790 71,591 48.31 3,064 6.02 0.0008
2014-02-26 2013-12-31 13F/A-1 MAGNACHIP SEMICONDUCTOR CORP N COMMON 55933J203 148,199 136,258 1,141.09 2,890 1,024.51 0.0008
2014-02-13 2013-12-31 13F MAGNACHIP SEMICONDUCTOR CORP N COMMON 55933J203 148,199 2,890
2013-10-31 2013-09-30 13F MAGNACHIP SEMICONDUCTOR CORP N COMMON 55933J203 11,941 11,941 257 0.0001
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2016-02-12 2015-12-31 13F MAGNACHIP SEMICONDUCTOR OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-11-13 2015-09-30 13F MAGNACHIP SEMICONDUCTOR OPTION Put 18,100 119 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.