Cameco Corporation
US ˙ NYSE ˙ US13321L1085

SecurityCCJ / Cameco Corporation
InstitutionMackenzie Financial Corp
Latest Disclosed Ownership1,298,917 shares
Latest Disclosed Value $ 141,234,934
Mackenzie Financial Corp reports 1.64% increase in ownership of CCJ / Cameco Corporation

On May 13, 2026 - Mackenzie Financial Corp filed a 13F-HR form disclosing ownership of 1,298,917 shares of Cameco Corporation (US:CCJ) valued at $141,075,375 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 1,278,002 shares of Cameco Corporation. This represents a change in shares of 1.64% during the quarter. The current value of the position is $148,803,932 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.

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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)
2026-05-13 2026-03-31 13F CAMECO COM 13321L108 1,298,917 20,915 1.64 141,235 21.19 0.1695
2026-02-18 2025-12-31 13F CAMECO COM 13321L108 1,278,002 382,830 42.77 116,542 55.16 0.1380
2025-11-13 2025-09-30 13F CAMECO COM 13321L108 895,172 -395,364 -30.64 75,112 -21.68 0.0910
2025-08-13 2025-06-30 13F CAMECO COM 13321L108 1,290,536 -111,143 -7.93 95,900 6,745.11 0.1242
2025-05-07 2025-03-31 13F CAMECO COM 13321L108 1,401,679 29,183 2.13 1,402 -98.01 0.0020
2025-05-02 2024-12-31 13F/A-2 CAMECO COM 13321L108 1,372,496 -7,100 -0.51 70,494 6.96 0.0961
2025-02-20 2024-12-31 13F/A-1 CAMECO COM 13321L108 1,372,496 -7,100 70,494 0.0916
2025-02-14 2024-12-31 13F Cameco Common Stock 13321L108 1,372,496 -7,100 69,646 0.1000
2024-11-13 2024-09-30 13F CAMECO COM 13321L108 1,379,596 32,268 2.39 65,904 -0.59 0.0917
2024-08-14 2024-06-30 13F CAMECO COM 13321L108 1,347,328 43,126 3.31 66,298 17.38 0.0985
2024-05-10 2024-03-31 13F CAMECO COM 13321L108 1,304,202 441,263 51.13 56,483 51.74 0.0814
2024-01-30 2023-12-31 13F CAMECO COM 13321L108 862,939 -89,737 -9.42 37,224 5.30 0.0561
2023-10-25 2023-09-30 13F CAMECO COM 13321L108 952,676 -170,308 -15.17 35,353 0.53 0.0594
2023-08-03 2023-06-30 13F CAMECO COM 13321L108 1,122,984 -440,894 -28.19 35,167 -14.12 0.0533
2023-04-24 2023-03-31 13F CAMECO COM 13321L108 1,563,878 232,799 17.49 40,948 35.95 0.0633
2023-02-14 2022-12-31 13F CAMECO COM 13321L108 1,331,079 789,241 145.66 30,122 109.70 0.0503
2022-10-07 2022-09-30 13F Cameco Common Stock 13321L108 541,838 -182,072 -25.15 14,364 -5.41 0.0247
2022-08-10 2022-06-30 13F CAMECO COM 13321L108 723,910 -40,203 -5.26 15,185 -31.87 0.0243
2022-05-13 2022-03-31 13F CAMECO COM 13321L108 764,113 -59,806 -7.26 22,289 24.07 0.0299
2022-02-14 2021-12-31 13F CAMECO COM 13321L108 823,919 -801,248 -49.30 17,965 -49.04 0.0242
2021-11-08 2021-09-30 13F CAMECO COM 13321L108 1,625,167 229,468 16.44 35,252 31.90 0.0500
2021-08-11 2021-06-30 13F CAMECO COM 13321L108 1,395,699 -638,823 -31.40 26,726 -20.75 0.0372
2021-05-14 2021-03-31 13F CAMECO COM 13321L108 2,034,522 -204,521 -9.13 33,723 12.79 0.0514
2021-02-10 2020-12-31 13F CAMECO COM 13321L108 2,239,043 431,393 23.86 29,900 63.70 0.0646
2020-11-13 2020-09-30 13F CAMECO COM 13321L108 1,807,650 379,088 26.54 18,265 25.06 0.0454
2020-08-13 2020-06-30 13F CAMECO COM 13321L108 1,428,562 1,360,367 1,994.82 14,605 2,730.43 0.0391
2020-05-14 2020-03-31 13F CAMECO COM 13321L108 68,195 172 0.25 516 -14.71 0.0017
2020-02-13 2019-12-31 13F CAMECO COM 13321L108 68,023 -66,022 -49.25 605 -52.47 0.0015
2019-11-14 2019-09-30 13F CAMECO COM 13321L108 134,045 -17,047 -11.28 1,273 -21.47 0.0033
2019-08-23 2019-06-30 13F/A-1 CAMECO COM 13321L108 151,092 151,092 1,621 0.0042
2019-08-14 2019-06-30 13F CAMECO COM 13321L108 151,092 151,092 1,621
2019-05-15 2019-03-31 13F CAMECO COM 13321L108 0 -1,529,933 -100.00 0 -100.00
2019-02-06 2018-12-31 13F CAMECO COM 13321L108 1,529,933 1,529,933 17,365 0.0456
2017-02-14 2016-12-31 13F CAMECO COM 13321L108 0 -67,842 -100.00 0 -100.00
2016-11-15 2016-09-30 13F CAMECO COM 13321L108 67,842 -31,314 -31.58 581 -46.60 0.0036
2016-08-12 2016-06-30 13F CAMECO COM 13321L108 99,156 99,156 0.00 1,088 0.0061
2016-05-12 2016-03-31 13F CAMECO COM 13321L108 0 -359,083 -100.00 0 -100.00
2016-02-12 2015-12-31 13F CAMECO COM 13321L108 359,083 -16,204 -4.32 4,433 -3.46 0.0275
2015-11-13 2015-09-30 13F CAMECO COM 13321L108 375,287 -64,016 -14.57 4,592 -27.28 0.0279
2015-08-13 2015-06-30 13F CAMECO COM 13321L108 439,303 4,467 1.03 6,315 4.14 0.0342
2015-05-13 2015-03-31 13F CAMECO COM 13321L108 434,836 19,433 4.68 6,064 -10.84 0.0320
2015-02-11 2014-12-31 13F CAMECO COM 13321L108 415,403 -439,111 -51.39 6,801 -54.82 0.0347
2014-11-12 2014-09-30 13F CAMECO COM 13321L108 854,514 144,769 20.40 15,052 8.09 0.0755
2014-08-11 2014-06-30 13F CAMECO COM 13321L108 709,745 29,161 4.28 13,925 -10.67 0.0648
2014-05-14 2014-03-31 13F CAMECO COM 13321L108 680,584 -2,337,419 -77.45 15,588 -75.09 0.0764
2014-02-11 2013-12-31 13F/A-1 CAMECO COM 13321L108 3,018,003 -1,980,485 -39.62 62,571 -30.64 0.3162
2014-02-03 2013-12-31 13F CAMECO COM 13321L108 3,018,003 62,571
2013-11-12 2013-09-30 13F CAMECO COM 13321L108 4,998,488 -387,110 -7.19 90,211 -18.90 0.4566
2013-08-20 2013-06-30 13F/A-1 CAMECO COM 13321L108 5,385,598 5,385,598 111,237 0.5305
2013-08-09 2013-06-30 13F CAMECO COM 13321L108 5,385,598 111,237 0.5322
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.