Hudbay Minerals Inc.
DE ˙ DB ˙ CA4436281022
23,18 € ↓ -2,72 (-10,50%)
2026-06-05
DEL PRIS
SecurityDE:OCKA / Hudbay Minerals Inc.
InstitutionCastleKnight Management LP
Latest Disclosed Ownership1,078,000 shares
Latest Disclosed Value $ 22,535,405
CastleKnight Management LP ownership in OCKA / Hudbay Minerals Inc.

On May 15, 2026 - CastleKnight Management LP filed a 13F-HR form disclosing ownership of 1,078,000 shares of Hudbay Minerals Inc. (DE:OCKA) valued at $17,937,920 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,166,200 shares of Hudbay Minerals Inc.. This represents a change in shares of -7.56% during the quarter. The current value of the position is $24,988,040 USD.

CastleKnight Management LP has a history of taking positions in derivatives of the underlying security (OCKA) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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.

DE:OCKA / Hudbay Minerals Inc. 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)
2026-05-15 2026-03-31 13F HUDBAY MINERALS COM 443628102 1,078,000 -88,200 -7.56 22,535 -2.70 0.3757
2026-02-17 2025-12-31 13F HUDBAY MINERALS COM 443628102 1,166,200 -145,300 -11.08 23,162 16.60 0.5131
2025-11-14 2025-09-30 13F HUDBAY MINERALS COM 443628102 1,311,500 -587,000 -30.92 19,863 -1.36 0.3914
2025-08-14 2025-06-30 13F HUDBAY MINERALS COM 443628102 1,898,500 74,200 4.07 20,138 45.45 0.5688
2025-05-15 2025-03-31 13F HUDBAY MINERALS COM 443628102 1,824,300 262,600 16.82 13,846 9.37 0.5435
2025-02-14 2024-12-31 13F HUDBAY MINERALS COM 443628102 1,561,700 172,100 12.38 12,659 -0.95 0.3698
2024-11-14 2024-09-30 13F HUDBAY MINERALS COM 443628102 1,389,600 0 0.00 12,780 1.68 0.5266
2024-08-14 2024-06-30 13F HUDBAY MINERALS COM 443628102 1,389,600 249,800 21.92 12,569 57.53 0.6241
2024-05-15 2024-03-31 13F HUDBAY MINERALS COM 443628102 1,139,800 37,000 3.36 7,980 31.41 0.4761
2024-02-14 2023-12-31 13F HUDBAY MINERALS COM 443628102 1,102,800 -188,100 -14.57 6,073 -3.53 0.3204
2023-11-14 2023-09-30 13F HUDBAY MINERALS COM 443628102 1,290,900 545,100 73.09 6,294 75.96 0.4130
2023-08-14 2023-06-30 13F HUDBAY MINERALS COM 443628102 745,800 101,900 15.83 3,577 6.05 0.3756
2023-05-15 2023-03-31 13F HUDBAY MINERALS COM 443628102 643,900 582,000 940.23 3,374 981.09 0.3487
2023-02-14 2022-12-31 13F HUDBAY MINERALS COM 443628102 61,900 -61,900 -50.00 313 -37.35 0.0413
2022-11-14 2022-09-30 13F HUDBAY MINERALS COM 443628102 123,800 0 0.00 498 -1.39 0.0698
2022-08-15 2022-06-30 13F HUDBAY MINERALS COM 443628102 123,800 50,900 69.82 505 -12.02 0.0835
2022-05-16 2022-03-31 13F HUDBAY MINERALS COM 443628102 72,900 61,200 523.08 574 575.29 0.0819
2022-02-14 2021-12-31 13F HUDBAY MINERALS COM 443628102 11,700 11,700 85 0.0175
Disclosed Call 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
(%)
2024-11-14 2024-09-30 13F HUDBAY MINERALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-08-14 2024-06-30 13F HUDBAY MINERALS COM Call 450,000 4,072 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.