Why did DNN stock drop? — 2026-11-12

Research session: 2026-11-12. Published: 2026-11-12T21:36:23.441567+00:00.

Final report

DNN — Denison Mines Corp Ordinary Shares (Canada)

Session close: $2.09. Regular-session share volume: 22,679,425. Change from previous close: -4.57%.

Key developments

Cosa Resources reported results from the summer drilling program at its Darby project, a joint venture with Denison Mines located near Cameco's Cigar Lake Mine. The release cited anomalous radioactivity and additional prospective geology, with Cosa acting as project operator.

Company news Cosa Intersects Anomalous Radioactivity and Additional Prospective Geology at Darby Joint Venture with Denison Mines

News sources

Company news Cosa Intersects Anomalous Radioactivity and Additional Prospective Geology at Darby Joint Venture with Denison Mines

Full report for 2026-11-12