Southern Copper Corporation
BG ˙ BUL ˙ US84265V1052
SecurityBG:PCU / Southern Copper Corporation
InstitutionSei Investments Co
Latest Disclosed Ownership310,816 shares
Latest Disclosed Value $ 44,592,508
Sei Investments Co reports 49.46% increase in ownership of PCU / Southern Copper Corporation

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 310,816 shares of Southern Copper Corporation (BG:PCU) valued at $44,592,508 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 207,965 shares of Southern Copper Corporation. This represents a change in shares of 49.46% during the quarter.

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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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)
2026-02-13 2025-12-31 13F SOUTHERN COPPER COM 84265V105 310,816 102,851 49.46 44,593 76.69 0.0440
2025-11-13 2025-09-30 13F SOUTHERN COPPER COM 84265V105 207,965 -11,843 -5.39 25,239 13.50 0.0271
2025-08-14 2025-06-30 13F SOUTHERN COPPER COM 84265V105 219,808 -22,049 -9.12 22,238 -1.62 0.0258
2025-05-14 2025-03-31 13F/A-1 SOUTHERN COPPER COM 84265V105 241,857 32,467 15.51 22,604 18.46 0.0291
2025-05-13 2025-03-31 13F SOUTHERN COPPER COM 84265V105 210,272 882 19,175 0.0209
2025-02-11 2024-12-31 13F SOUTHERN COPPER COM 84265V105 209,390 60,360 40.50 19,082 10.69 0.0245
2024-11-12 2024-09-30 13F SOUTHERN COPPER COM 84265V105 149,030 50,863 51.81 17,238 62.99 0.0224
2024-08-13 2024-06-30 13F SOUTHERN COPPER COM 84265V105 98,167 31,044 46.25 10,577 47.92 0.0150
2024-05-07 2024-03-31 13F SOUTHERN COPPER COM 84265V105 67,123 3,833 6.06 7,150 31.29 0.0105
2024-02-14 2023-12-31 13F SOUTHERN COPPER COM 84265V105 63,290 -10,014 -13.66 5,447 -1.32 0.0087
2023-11-14 2023-09-30 13F SOUTHERN COPPER COM 84265V105 73,304 -13,313 -15.37 5,519 -11.18 0.0099
2023-08-11 2023-06-30 13F SOUTHERN COPPER COM 84265V105 86,617 -26,461 -23.40 6,214 -27.93 0.0108
2023-05-12 2023-03-31 13F SOUTHERN COPPER COM 84265V105 113,078 108,413 2,323.97 8,622 2,968.33 0.0160
2023-02-10 2022-12-31 13F SOUTHERN COPPER COM 84265V105 4,665 -86,254 -94.87 282 -93.11 0.0006
2022-11-14 2022-09-30 13F SOUTHERN COPPER COM 84265V105 90,919 20,130 28.44 4,077 15.82 0.0091
2022-08-15 2022-06-30 13F SOUTHERN COPPER COM 84265V105 70,789 32,266 83.76 3,520 20.51 0.0076
2022-05-13 2022-03-31 13F SOUTHERN COPPER COM 84265V105 38,523 -85,873 -69.03 2,921 -61.95 0.0059
2022-02-14 2021-12-31 13F SOUTHERN COPPER COM 84265V105 124,396 -69,145 -35.73 7,677 -29.34 0.0144
2021-11-12 2021-09-30 13F SOUTHERN COPPER COM 84265V105 193,541 -6,585 -3.29 10,864 -15.59 0.0228
2021-08-06 2021-06-30 13F SOUTHERN COPPER COM 84265V105 200,126 103,000 106.05 12,870 95.38 0.0285
2021-05-12 2021-03-31 13F SOUTHERN COPPER COM 84265V105 97,126 7,962 8.93 6,587 13.43 0.0166
2021-02-08 2020-12-31 13F SOUTHERN COPPER COM 84265V105 89,164 31,880 55.65 5,807 123.86 0.0150
2020-12-04 2020-09-30 13F/A-1 SOUTHERN COPPER COM 84265V105 57,284 11,518 25.17 2,594 42.21 0.0075
2020-11-06 2020-09-30 13F SOUTHERN COPPER COM 84265V105 59,317 13,551 2,686 6,467.2908
2020-08-17 2020-06-30 13F/A-1 SOUTHERN COPPER COM 84265V105 45,766 10,469 29.66 1,824 83.69 0.0057
2020-08-11 2020-06-30 13F SOUTHERN COPPER COM 84265V105 38,734 3,437 1,641 4,451.2999
2020-05-14 2020-03-31 13F SOUTHERN COPPER COM 84265V105 35,297 -2,640 -6.96 993 -38.55 0.0036
2020-02-06 2019-12-31 13F SOUTHERN COPPER COM 84265V105 37,937 -48,838 -56.28 1,616 -45.42 0.0048
2019-11-12 2019-09-30 13F SOUTHERN COPPER COM 84265V105 86,775 -70,657 -44.88 2,961 -51.59 0.0076
2019-08-14 2019-06-30 13F SOUTHERN COPPER COM 84265V105 157,432 44,752 39.72 6,117 36.82 0.0200
2019-05-15 2019-03-31 13F SOUTHERN COPPER COM 84265V105 112,680 -188,835 -62.63 4,471 -65.63 0.0150
2019-02-13 2018-12-31 13F SOUTHERN COPPER COM 84265V105 301,515 -247 -0.08 13,007 -0.02 0.0463
2018-11-08 2018-09-30 13F SOUTHERN COPPER COM 84265V105 301,762 31,255 11.55 13,009 2.61 0.0472
2018-08-03 2018-06-30 13F SOUTHERN COPPER COM 84265V105 270,507 41,836 18.30 12,678 2.33 0.0431
2018-05-11 2018-03-31 13F SOUTHERN COPPER COM 84265V105 228,671 39,968 21.18 12,389 38.36 0.0475
2018-02-08 2017-12-31 13F SOUTHERN COPPER COM 84265V105 188,703 167,792 802.41 8,954 977.50 0.0311
2017-11-06 2017-09-30 13F SOUTHERN COPPER COM 84265V105 20,911 4,038 23.93 831 42.29 0.0030
2017-07-31 2017-06-30 13F SOUTHERN COPPER COM 84265V105 16,873 5,505 48.43 584 43.14 0.0023
2017-05-05 2017-03-31 13F SOUTHERN COPPER COM 84265V105 11,368 -13,082 -53.51 408 -47.76 0.0018
2017-02-02 2016-12-31 13F SOUTHERN COPPER COM 84265V105 24,450 10,666 77.38 781 115.15 0.0038
2016-11-04 2016-09-30 13F SOUTHERN COPPER COM 84265V105 13,784 11,015 397.80 363 384.00 0.0018
2016-08-11 2016-06-30 13F SOUTHERN COPPER COM 84265V105 2,769 -2,426 -46.70 75 -47.92 0.0004
2016-05-10 2016-03-31 13F/A-1 SOUTHERN COPPER COM 84265V105 5,195 2,563 97.38 144 105.71 0.0009
2016-02-03 2015-12-31 13F SOUTHERN COPPER COM 84265V105 2,632 78 3.05 70 2.94 0.0004
2015-11-02 2015-09-30 13F/A-1 SOUTHERN COPPER COM 84265V105 2,554 14 0.55 68 -9.33 0.0006
2015-10-30 2015-09-30 13F DIREXION SHS ETF TR COM 84265V105 2,554 69
2015-08-07 2015-06-30 13F/A-1 SOUTHERN COPPER COM 84265V105 2,540 -241 -8.67 75 -3.85 0.0007
2015-08-04 2015-06-30 13F SOUTHERN COPPER COM 84265V105 2,540 -241 75 0.0007
2015-05-14 2015-03-31 13F/A-1 SOUTHERN COPPER COM 84265V105 2,781 525 23.27 78 23.81 0.0007
2015-05-01 2015-03-31 13F SOUTHERN COPPER COM 84265V105 2,781 78
2015-02-10 2014-12-31 13F SOUTHERN COPPER COM 84265V105 2,256 2,256 63 0.0006
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.