Denison Mines Corp Ordinary Shares (Canada) (DNN)
DNN moved a median of +0.30% 30 minutes after news, and -0.00% by the close. How DNN actually reacts to news — the realized, point-in-time move the market made, measured across 227 labeled events over the last three years with zero look-ahead.
DNN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 48% | 223 |
| 30-min | +0.30% | 54% | 226 |
| 60-min | -0.15% | 46% | 226 |
| to close | -0.00% | 48% | 227 |
| Middle 50% of DNN reactions | -0.83% to +1.60% |
|---|---|
| Median reaction (30-min) | +0.30% |
| Measured reactions | 227 |
Half of all Denison Mines Corp Ordinary Shares (Canada) news events land between -0.83% and +1.60% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when DNN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to DNN's baseline. Nothing else.
Recent DNN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form F-10EF DENISON MINES CORP. | SEC filing · Form F-10EF | SEC EDGAR | -2.73% | -1.36% | |
| Form 6-K DENISON MINES CORP. For: Aug 12 | SEC filing · Form 6-K | SEC EDGAR | -0.15% | -1.52% | |
| Denison Reports Financial and Operational Results for Q2 2026, Highlighted by Significant Initial Progress from Construction Activities at the Phoenix In-Situ Recovery ('ISR') Uranium Mine | Press release | Canada Newswire | +1.39% | +0.62% | |
| Denison Announces Completion of Site Preparation Activities and Commencement of Full-Scale Construction at Phoenix ISR Uranium Mine | Press release | Canada Newswire | -4.12% | -5.82% | |
| Form 6-K DENISON MINES CORP. For: Jul 28 | SEC filing · Form 6-K | SEC EDGAR | +0.18% | -1.82% | |
| As Washington Races to Rebuild Domestic Uranium Supply, One Nasdaq Company Is Lining Up the Team at American's Largest Conventional, Measured and Indicated Uranium Deposit | Press release | Canada Newswire | +2.25% | +0.32% | |
| Form 6-K DENISON MINES CORP. For: Jul 02 | SEC filing · Form 6-K | SEC EDGAR | +0.47% | +1.58% | |
| Peter Ballantyne Cree Nation Withdraws Judicial Review and Confirms Support for the Wheeler River Project | Press release | Canada Newswire | -0.63% | +1.27% | |
| Form 6-K DENISON MINES CORP. For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | -2.33% | -2.79% | |
| Inside America's Largest Conventional Measured and Indicated Uranium Deposit: Eagle Nuclear Energy Advances Aurora Toward Pre-Feasibility | Press release | Canada Newswire | -0.43% | +1.31% | |
| Denison Reports Financial and Operational Results for Q1 2026, Highlighted by Commencement of Site Preparation and Early Works for the Phoenix ISR Uranium Mine, and the Results of its Shareholder Meeting | Press release | Canada Newswire | -0.92% | -1.91% | |
| The Uranium Shortage: 78 Gigawatts Under Construction and Not Enough Fuel | Press release | Canada Newswire | -1.58% | -5.01% | |
| America's Largest Conventional Uranium Deposit Just Broke Ground on a Production Roadmap | Press release | Canada Newswire | +1.57% | +1.84% | |
| Form 6-K DENISON MINES CORP. For: Apr 08 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.14% | |
| Form 6-K DENISON MINES CORP. For: Mar 30 | SEC filing · Form 6-K | SEC EDGAR | +0.43% | +1.73% | |
| Form 6-K DENISON MINES CORP. For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | +0.04% | +1.44% | |
| Denison Announces Filing of Annual Report on Form 40-F | Press release | Canada Newswire | +1.79% | +5.06% | |
| Form 40-F DENISON MINES CORP. For: Dec 31 | SEC filing · Form 40-F | SEC EDGAR | +1.79% | +5.06% | |
| Form 6-K DENISON MINES CORP. For: Mar 30 | SEC filing · Form 6-K | SEC EDGAR | +1.79% | +5.06% | |
| Utah's Forgotten Uranium Belt Is Getting a Second Look. Here's Why the Timing Matters. | Press release | PR Newswire | — | -1.01% | |
| Form 6-K DENISON MINES CORP. For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -0.26% | +0.87% | |
| Form 6-K DENISON MINES CORP. For: Mar 11 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +2.17% | |
| Denison Reports Financial and Operational Results for 2025 and Final Investment Decision to Construct the Phoenix ISR Uranium Mine | Press release | PR Newswire | -0.29% | +0.00% | |
| Form 6-K DENISON MINES CORP. For: Mar 04 | SEC filing · Form 6-K | SEC EDGAR | — | +0.11% | |
| Denison Announces Final Investment Decision for the Phoenix In-Situ Recovery Uranium Mine and Plans to Start Construction in March 2026 | Press release | PR Newswire | -0.34% | -2.98% | |
| Denison Receives Final Regulatory Approval to Construct the Phoenix ISR Uranium Mine | Press release | PR Newswire | +1.51% | +2.89% | |
| Form 6-K DENISON MINES CORP. For: Feb 19 | SEC filing · Form 6-K | SEC EDGAR | -0.12% | +1.49% | |
| Denison Announces Award of Construction Management Contract to Wood Canada for the Phoenix Uranium Mine | Press release | PR Newswire | -1.34% | +2.42% | |
| Form 6-K DENISON MINES CORP. For: Feb 17 | SEC filing · Form 6-K | SEC EDGAR | +0.10% | +2.15% | |
| Denison Announces Grid Power Available at Future Phoenix Uranium Mine Site Following Completion of SaskPower Transmission Line | Press release | PR Newswire | +1.22% | +1.22% | |
| Form 6-K DENISON MINES CORP. For: Jan 08 | SEC filing · Form 6-K | SEC EDGAR | -0.59% | -2.65% | |
| Denison Reports Readiness to Commence Construction of Flagship Phoenix ISR Project and Provides Capital Cost Update | Press release | PR Newswire | +3.47% | +10.58% | |
| Form 6-K DENISON MINES CORP. For: Jan 02 | SEC filing · Form 6-K | SEC EDGAR | -0.07% | -0.66% | |
| Denison Announces Closing of Transaction with Skyharbour and Formation of Four Prospective Exploration Joint Ventures Proximal to Wheeler River | Press release | PR Newswire | +1.15% | -4.62% | |
| Form 6-K DENISON MINES CORP. For: Dec 17 | SEC filing · Form 6-K | SEC EDGAR | -0.19% | -2.74% | |
| Denison Announces Signing of Impact Benefit Agreement and Exploration Agreement with Métis Nation-Saskatchewan, MN-S NR-1, and MN-S NR-3 | Press release | PR Newswire | -1.48% | +4.80% | |
| Form 6-K DENISON MINES CORP. For: Dec 04 | SEC filing · Form 6-K | SEC EDGAR | +0.73% | +3.08% | |
| Denison & Ya'thi Néné Lands and Resources Announce Signing of the Nuhenéné Benefit Agreement with Three First Nations and Four Municipalities | Press release | PR Newswire | +2.21% | +1.21% | |
| Form 6-K DENISON MINES CORP. For: Dec 01 | SEC filing · Form 6-K | SEC EDGAR | +2.98% | +2.78% | |
| Denison Announces Agreements with Skyharbour Resources, Increasing Denison's Strategic Foothold Surrounding Wheeler River | Press release | PR Newswire | -0.17% | -3.24% | |
| Form 6-K DENISON MINES CORP. For: Nov 17 | SEC filing · Form 6-K | SEC EDGAR | -0.38% | -2.63% | |
| Form 6-K DENISON MINES CORP. For: Nov 07 | SEC filing · Form 6-K | SEC EDGAR | -0.56% | -0.75% | |
| Denison Reports Financial and Operational Results for Q3 2025, Including First Production from McClean North Uranium Mine | Press release | PR Newswire | +0.40% | +2.82% | |
| Denison Acknowledges Application for Judicial Review Regarding Provincial Environmental Assessment Approval for Wheeler River | Press release | PR Newswire | -1.43% | -2.14% | |
| Form 6-K DENISON MINES CORP. For: Nov 04 | SEC filing · Form 6-K | SEC EDGAR | -0.36% | -0.72% | |
| Form 6-K DENISON MINES CORP. For: Oct 09 | SEC filing · Form 6-K | SEC EDGAR | -0.34% | -1.87% | |
| Denison to File Early Warning Report in Respect of Foremost Clean Energy Ltd. | Press release | Canada Newswire | +1.28% | +9.79% | |
| Denison Announces Closing of US$345 Million Convertible Senior Notes Offering | Press release | Canada Newswire | +0.98% | +1.98% | |
| Form 6-K DENISON MINES CORP. For: Aug 15 | SEC filing · Form 6-K | SEC EDGAR | +0.98% | +1.98% | |
| Denison Announces Pricing of Upsized US$300 Million Convertible Senior Notes Offering | Press release | Canada Newswire | +2.50% | +1.00% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the DNN section they belong to.
Where else DNN is measured.
DNN earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Arch Resources, Inc. Class A (ARCH) | 228 | -0.07% | 46% |
| Iamgold Corporation Ordinary Shares (IAG) | 228 | +0.04% | 52% |
| AURYN RESOURCES INC (AUG) | 225 | 0.00% | 43% |
| Wheaton Precious Metals Corp (WPM_TSE) | 225 | -0.05% | 49% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Basic Materials names, measured the same way →
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How the numbers are made.
How is Denison Mines Corp Ordinary Shares (Canada)'s median reaction calculated?
Every labeled DNN news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 227 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 54% of DNN's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does DNN's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.