Southern Copper Corporation
BG ˙ BUL ˙ US84265V1052
SecurityBG:PCU / Southern Copper Corporation
InstitutionRhumbline Advisers
Latest Disclosed Ownership112,525 shares
Latest Disclosed Value $ 19,367,523
Rhumbline Advisers reports 10.41% decrease in ownership of PCU / Southern Copper Corporation

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 112,525 shares of Southern Copper Corporation (BG:PCU) valued at $19,367,523 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 125,598 shares of Southern Copper Corporation. This represents a change in shares of -10.41% 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)
2026-05-12 2026-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 112,525 -13,073 -10.41 19,368 7.48 0.0166
2026-02-13 2025-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 125,598 -2,695 -2.10 18,020 15.73 0.0146
2025-11-06 2025-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 128,293 -32,215 -20.07 15,570 -4.12 0.0125
2025-08-12 2025-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 160,508 -20,428 -11.29 16,239 -3.97 0.0139
2025-05-29 2025-03-31 13F/A-1 SOUTHN COPPER CORP DEL COM COM 84265V105 180,936 660 0.37 16,911 2.91 0.0158
2025-04-08 2025-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 180,936 660 16,911 0.0158
2025-05-29 2024-12-31 13F/A-1 SOUTHN COPPER CORP DEL COM COM 84265V105 180,276 -2,300 -1.26 16,432 -22.19 0.0147
2025-01-30 2024-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 180,276 -2,300 16,432 0.0147
2024-11-12 2024-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 182,576 -10,655 -5.51 21,119 1.44 0.0191
2024-08-01 2024-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 193,231 -23,302 -10.76 20,819 -9.74 0.0196
2024-05-09 2024-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 216,533 -20,686 -8.72 23,065 12.97 0.0221
2024-02-08 2023-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 237,219 -8,915 -3.62 20,417 10.18 0.0214
2023-11-09 2023-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 246,134 -3,450 -1.38 18,531 3.50 0.0215
2023-08-08 2023-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 249,584 38,118 18.03 17,905 111,806.25 0.0201
2023-05-11 2023-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 211,466 -15,079 -6.66 16 -99.88 0.0199
2023-02-14 2022-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 226,545 18,336 8.81 13,681 46.54 0.0184
2022-11-10 2022-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 208,209 31,397 17.76 9,336 6.01 0.0139
2022-08-11 2022-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 176,812 3,712 2.14 8,807 -32.97 0.0129
2022-05-12 2022-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 173,100 94,910 121.38 13,138 172.29 0.0169
2022-02-10 2021-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 78,190 3,278 4.38 4,825 14.72 0.0059
2021-11-12 2021-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 74,912 -4,870 -6.10 4,206 -18.04 0.0057
2021-08-05 2021-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 79,782 -4,452 -5.29 5,132 -10.23 0.0067
2021-05-06 2021-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 84,234 -4,107 -4.65 5,717 -0.63 0.0078
2021-02-10 2020-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 88,341 395 0.45 5,753 44.51 0.0079
2020-11-12 2020-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 87,946 -4,830 -5.21 3,981 7.89 0.0062
2020-08-13 2020-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 92,776 3,021 3.37 3,690 45.97 0.0062
2020-05-06 2020-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 89,755 1,630 1.85 2,528 -32.48 0.0053
2020-02-05 2019-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 88,125 -4,302 -4.65 3,744 18.67 0.0063
2019-10-23 2019-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 92,427 -29,236 -24.03 3,155 -33.26 0.0058
2019-08-14 2019-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 121,663 -1,592 -1.29 4,727 -3.35 0.0089
2019-05-01 2019-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 123,255 9,721 8.56 4,891 40.02 0.0095
2019-01-31 2018-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 113,534 12,241 12.08 3,493 -20.07 0.0076
2018-11-07 2018-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 101,293 -809 -0.79 4,370 -8.69 0.0084
2018-08-06 2018-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 102,102 -15,299 -13.03 4,786 -24.76 0.0097
2018-05-02 2018-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 117,401 -4,483 -3.68 6,361 9.99 0.0133
2018-02-09 2017-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 121,884 -1,378 -1.12 5,783 18.00 0.0117
2017-11-06 2017-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 123,262 -6,378 -4.92 4,901 9.18 0.0107
2017-08-02 2017-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 129,640 7,032 5.74 4,489 2.02 0.0102
2017-05-02 2017-03-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 122,608 3,990 3.36 4,400 16.13 0.0103
2017-01-27 2016-12-31 13F SOUTHN COPPER CORP DEL COM COM 84265V105 118,618 6,052 5.38 3,789 28.01 0.0096
2016-11-08 2016-09-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 112,566 -750 -0.66 2,960 -3.17 0.0082
2016-08-11 2016-06-30 13F SOUTHN COPPER CORP DEL COM COM 84265V105 113,316 -10,088 -8.17 3,057 -10.61 0.0091
2016-05-02 2016-03-31 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 123,404 1,340 1.10 3,420 7.28 0.0106
2016-02-03 2015-12-31 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 122,064 99 0.08 3,188 -2.18 0.0103
2015-11-04 2015-09-30 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 121,965 4,425 3.76 3,259 -5.73 0.0111
2015-08-04 2015-06-30 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 117,540 -41,074 -25.90 3,457 -25.30 0.0110
2015-05-12 2015-03-31 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 158,614 -3,660 -2.26 4,628 1.14 0.0134
2015-02-06 2014-12-31 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 162,274 -3,600 -2.17 4,576 -6.95 0.0133
2014-11-12 2014-09-30 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 165,874 1,817 1.11 4,918 -1.28 0.0148
2014-08-06 2014-06-30 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 164,057 -9,413 -5.43 4,982 -1.35 0.0146
2014-05-06 2014-03-31 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 173,470 -1,660 -0.95 5,050 0.44 0.0150
2014-02-03 2013-12-31 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 175,130 -7,488 -4.10 5,028 1.07 0.0148
2013-11-05 2013-09-30 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 182,618 -15,560 -7.85 4,975 -9.12 0.0154
2013-08-07 2013-06-30 13F SOUTHERN COPPER CORP COMMON ST COM 84265V105 198,178 198,178 5,474 0.0176
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.