Hudbay Minerals Inc.
DE ˙ DB ˙ CA4436281022
23,18 € ↓ -2,72 (-10,50%)
2026-06-05
DEL PRIS
SecurityDE:OCKA / Hudbay Minerals Inc.
InstitutionMountaineer Partners Management, LLC
Latest Disclosed Ownership706,040 shares
Latest Disclosed Value $ 14,756,237
Mountaineer Partners Management, LLC reports 10.32% decrease in ownership of OCKA / Hudbay Minerals Inc.

On May 15, 2026 - Mountaineer Partners Management, LLC filed a 13F-HR form disclosing ownership of 706,040 shares of Hudbay Minerals Inc. (DE:OCKA) valued at $11,748,506 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 787,247 shares of Hudbay Minerals Inc.. This represents a change in shares of -10.32% during the quarter. The current value of the position is $16,366,007 USD.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F HUDBAY MINERALS COM 443628102 706,040 -81,207 -10.32 14,756 -5.57 5.9072
2026-02-13 2025-12-31 13F HUDBAY MINERALS COM 443628102 787,247 -168,172 -17.60 15,627 7.88 8.7435
2025-11-14 2025-09-30 13F HUDBAY MINERALS COM 443628102 955,419 -169,013 -15.03 14,484 21.41 8.4236
2025-08-14 2025-06-30 13F HUDBAY MINERALS COM 443628102 1,124,432 -36,623 -3.15 11,930 35.38 7.8853
2025-05-15 2025-03-31 13F HUDBAY MINERALS COM 443628102 1,161,055 56,492 5.11 8,812 -1.50 8.4328
2025-02-14 2024-12-31 13F HUDBAY MINERALS COM 443628102 1,104,563 -18,789 -1.67 8,947 -13.34 6.5516
2024-11-15 2024-09-30 13F/A-1 HUDBAY MINERALS COM 443628102 1,123,352 -33,301 -2.88 10,324 -1.38 6.4371
2024-11-14 2024-09-30 13F HUDBAY MINERALS COM 443628102 10,323,605 9,166,952 1,123 12.0930
2024-08-14 2024-06-30 13F HUDBAY MINERALS COM 443628102 1,156,653 -133,473 -10.35 10,468 15.91 5.4468
2024-05-15 2024-03-31 13F HUDBAY MINERALS COM 443628102 1,290,126 572,434 79.76 9,031 127.97 4.1692
2024-02-14 2023-12-31 13F HUDBAY MINERALS COM 443628102 717,692 0 0.00 3,962 13.33 2.0134
2023-11-14 2023-09-30 13F HUDBAY MINERALS COM 443628102 717,692 17,692 2.53 3,495 4.02 2.2401
2023-08-14 2023-06-30 13F HUDBAY MINERALS COM 443628102 700,000 0 0.00 3,360 -8.57 1.8535
2023-05-15 2023-03-31 13F HUDBAY MINERALS COM 443628102 700,000 700,000 3,675 2.6703
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.