) are higher on the session by 3.83%, trading at $43.06. Overall call volume is now running at 2.08x the daily average, with 38% of all calls traded being purchases on the offer. 6,484 contracts have traded on the session so far. Cameco Corporation is a Canada-based company. The company and its subsidiaries are primarily engaged in the exploration for and the development, mining, refining, conversion and fabrication of uranium for sale as fuel for generating electricity in nuclear power reactors in Canada and other countries.