Cameco Corporation
US ˙ NYSE ˙ US13321L1085

SecurityCCJ / Cameco Corporation
InstitutionCumberland Partners Ltd
Latest Disclosed Ownership124,376 shares
Latest Disclosed Value $ 13,492,975
Cumberland Partners Ltd ownership in CCJ / Cameco Corporation

On May 14, 2026 - Cumberland Partners Ltd filed a 13F-HR form disclosing ownership of 124,376 shares of Cameco Corporation (US:CCJ) valued at $13,508,477 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 157,246 shares of Cameco Corporation. This represents a change in shares of -20.90% during the quarter. The current value of the position is $14,181,352 USD.

Cumberland Partners Ltd has a history of taking positions in derivatives of the underlying security (CCJ) 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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.

CCJ / Cameco 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)
2026-05-14 2026-03-31 13F CAMECO COM 13321L108 124,376 -32,870 -20.90 13,493 -6.38 0.8285
2026-02-06 2025-12-31 13F CAMECO COM 13321L108 157,246 -26,226 -14.29 14,411 -6.37 0.8826
2025-11-07 2025-09-30 13F CAMECO COM 13321L108 183,472 -11,960 -6.12 15,393 6.20 1.0060
2025-08-12 2025-06-30 13F CAMECO COM 13321L108 195,432 -24,727 -11.23 14,494 59.91 1.0052
2025-05-09 2025-03-31 13F CAMECO COM 13321L108 220,159 -31,366 -12.47 9,064 -29.84 0.6990
2025-02-03 2024-12-31 13F CAMECO COM 13321L108 251,525 -23,318 -8.48 12,919 -1.71 0.9009
2024-11-05 2024-09-30 13F CAMECO COM 13321L108 274,843 4,140 1.53 13,144 -1.28 0.9125
2024-08-13 2024-06-30 13F CAMECO COM 13321L108 270,703 -61 -0.02 13,314 13.50 0.9682
2024-05-09 2024-03-31 13F CAMECO COM 13321L108 270,764 -16,932 -5.89 11,730 -3.18 0.8515
2024-02-01 2023-12-31 13F CAMECO COM 13321L108 287,696 5,780 2.05 12,116 7.88 1.1088
2023-11-08 2023-09-30 13F CAMECO COM 13321L108 281,916 1,121 0.40 11,231 27.58 1.0802
2023-08-09 2023-06-30 13F CAMECO COM 13321L108 280,795 47,072 20.14 8,803 44.01 0.8076
2023-05-08 2023-03-31 13F CAMECO COM 13321L108 233,723 -9,747 -4.00 6,113 10.80 0.5999
2023-02-06 2022-12-31 13F CAMECO COM 13321L108 243,470 -107,766 -30.68 5,517 -41.08 0.5814
2022-11-14 2022-09-30 13F Cameco COM 13321L108 351,236 -47,995 -12.02 9,362 11.72 0.9941
2022-08-10 2022-06-30 13F Cameco COM 13321L108 399,231 43,675 12.28 8,380 -19.15 0.7996
2022-05-10 2022-03-31 13F CAMECO COM 13321L108 355,556 64,091 21.99 10,365 62.95 0.7838
2022-02-10 2021-12-31 13F CAMECO COM 13321L108 291,465 49,822 20.62 6,361 21.23 0.4471
2021-11-10 2021-09-30 13F Cameco COM 13321L108 241,643 64,750 36.60 5,247 54.78 0.4298
2021-08-09 2021-06-30 13F Cameco COM 13321L108 176,893 79,139 80.96 3,390 109.26 0.2659
2021-05-11 2021-03-31 13F Cameco COM 13321L108 97,754 97,754 1,620 0.1334
2020-02-07 2019-12-31 13F CAMECO COM 13321L108 0 -65,000 -100.00 0 -100.00
2019-11-13 2019-09-30 13F CAMECO COM 13321L108 65,000 -22,500 -25.71 618 -34.26 0.0594
2019-08-08 2019-06-30 13F CAMECO COM 13321L108 87,500 24,059 37.92 940 25.67 0.0903
2019-05-15 2019-03-31 13F Cameco COM 13321L108 63,441 18,056 39.78 748 45.24 0.0752
2019-02-12 2018-12-31 13F Cameco COM 13321L108 45,385 3,210 7.61 515 7.07 0.0582
2018-11-15 2018-09-30 13F Cameco COM 13321L108 42,175 -49,560 -54.03 481 -53.39 0.0459
2018-08-09 2018-06-30 13F Cameco COM 13321L108 91,735 91,735 1,032 0.1039
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
(%)
2020-02-07 2019-12-31 13F CAMECO COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-13 2019-09-30 13F CAMECO COM Call 12,000 18 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.