IsoEnergy Ltd. Common Shares (ISOU)
ISOU moved a median of -0.65% 30 minutes after news, and -0.08% by the close. How ISOU actually reacts to news — the realized, point-in-time move the market made, measured across 132 labeled events over the last three years with zero look-ahead.
ISOU’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.58% | 30% | 122 |
| 30-min | -0.65% | 42% | 130 |
| 60-min | -0.42% | 47% | 131 |
| to close | -0.08% | 48% | 131 |
| Middle 50% of ISOU reactions | -2.17% to +0.84% |
|---|---|
| Median reaction (30-min) | -0.65% |
| Measured reactions | 132 |
Half of all IsoEnergy Ltd. Common Shares news events land between -2.17% and +0.84% 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 ISOU moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ISOU's baseline. Nothing else.
Recent ISOU events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K IsoEnergy Ltd. For: Oct 13 | SEC filing · Form 6-K | SEC EDGAR | -1.33% | -4.21% | |
| IsoEnergy Announces the Appointment of Nathan Bridge as Vice President, Exploration and Dr. Dan Brisbin as Vice President, Geology | Press release | Canada Newswire | -1.33% | -4.21% | |
| IsoEnergy Completes Summer Drilling at Larocque East, Intersecting Widespread and Strongest Radioactivity to Date Along the Hurricane South Trend | Press release | Canada Newswire | +1.18% | +4.35% | |
| IsoEnergy Signs Exploration Agreement with Kineepik Métis Local to Support Responsible Uranium Exploration in Saskatchewan | Press release | Canada Newswire | -2.68% | -1.51% | |
| UraniumX Completes Acquisition of the Dieter Lake Uranium Project; IsoEnergy Becomes Strategic Shareholder | Press release | ACCESS Newswire | -1.89% | -3.49% | |
| IsoEnergy and DISA Technologies Announce Closing of Transaction to Form DISA Uranium Corporation | Press release | Canada Newswire | -1.89% | -3.49% | |
| DISA Technologies Launches DISA Uranium Corporation, a New American Uranium Recovery and Production Platform | Press release | PR Newswire | -1.88% | -1.05% | |
| Form 6-K IsoEnergy Ltd. For: Aug 04 | SEC filing · Form 6-K | SEC EDGAR | -1.88% | -1.05% | |
| IsoEnergy and DISA Technologies to Form DISA Uranium Corporation, Creating a Technology-Enabled U.S. Uranium Platform for Production, Processing, and Remediation | Press release | Canada Newswire | -1.88% | -1.05% | |
| Form 6-K IsoEnergy Ltd. For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -0.42% | +2.20% | |
| Form 6-K IsoEnergy Ltd. For: Jul 13 | SEC filing · Form 6-K | SEC EDGAR | -2.38% | -6.20% | |
| IsoEnergy Releases 2025 Sustainability Report Demonstrating Commitment to Responsible Growth | Press release | Canada Newswire | -2.38% | -6.20% | |
| Form 6-K IsoEnergy Ltd. For: Jul 08 | SEC filing · Form 6-K | SEC EDGAR | +1.24% | +4.95% | |
| IsoEnergy Resumes Summer Drilling at Hurricane South Trend with Strong Initial Results; 11,075 cps over 3.5 m, Including 43,160 cps Over 0.5 m, Intersected on South Trend | Press release | Canada Newswire | +1.24% | +4.95% | |
| Form SD IsoEnergy Ltd. | SEC filing · Form SD | SEC EDGAR | -0.44% | -1.28% | |
| Form 6-K IsoEnergy Ltd. For: Jun 29 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -0.79% | |
| IsoEnergy Provides Update on Wildfire Activity Near Larocque East Project, Athabasca Basin | Press release | Canada Newswire | +0.00% | -0.79% | |
| Form 6-K IsoEnergy Ltd. For: Jun 25 | SEC filing · Form 6-K | SEC EDGAR | -2.58% | -5.50% | |
| IsoEnergy Completes Acquisition of Toro Energy | Press release | Canada Newswire | -2.58% | -5.50% | |
| Form 6-K IsoEnergy Ltd. For: Jun 10 | SEC filing · Form 6-K | SEC EDGAR | +2.84% | +4.53% | |
| Form 6-K IsoEnergy Ltd. For: Jun 11 | SEC filing · Form 6-K | SEC EDGAR | +2.84% | +4.53% | |
| IsoEnergy Commences 8,000 Metre Summer Drill Program at the Larocque East Project, Athabasca Basin | Press release | Canada Newswire | +2.84% | +4.53% | |
| IsoEnergy Announces Results Following Annual General Meeting of Shareholders | Press release | Canada Newswire | +2.84% | +4.53% | |
| Form 6-K IsoEnergy Ltd. For: May 12 | SEC filing · Form 6-K | SEC EDGAR | -2.86% | -5.64% | |
| IsoEnergy Confirms High Grade Uranium Mineralization on the Hurricane South Trend, with up to 4.21% U3O8 over 3.5 m, including up to 11.6% U3O8 over 1.0 m | Press release | Canada Newswire | -2.86% | -5.64% | |
| Form 6-K IsoEnergy Ltd. For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | +1.15% | +0.57% | |
| Form 6-K IsoEnergy Ltd. For: Apr 23 | SEC filing · Form 6-K | SEC EDGAR | +3.02% | -3.02% | |
| IsoEnergy Continues Systematic Drill Testing at Flatiron, Targeting Growth Near Tony M Mine, Utah and Provides Bulk Sample Update | Press release | Canada Newswire | +3.02% | -3.02% | |
| Form 6-K IsoEnergy Ltd. For: Apr 17 | SEC filing · Form 6-K | SEC EDGAR | +0.86% | +4.92% | |
| Form SUPPL IsoEnergy Ltd. | SEC filing · Form SUPPL | SEC EDGAR | +0.86% | +4.92% | |
| IsoEnergy Announces New At-The-Market Equity Program | Press release | Canada Newswire | +0.86% | +4.92% | |
| Form 6-K IsoEnergy Ltd. For: Apr 07 | SEC filing · Form 6-K | SEC EDGAR | — | -0.76% | |
| IsoEnergy Winter Drilling Intersects Elevated Radioactivity in Multiple Holes, Including 30,050 cps over 1.0 Metre, in a Newly Reinterpreted Fault Zone on the South Trend of the Hurricane Deposit | Press release | PR Newswire | -0.52% | -1.24% | |
| Form 40-F IsoEnergy Ltd. For: Dec 31 | SEC filing · Form 40-F | SEC EDGAR | +0.00% | +6.92% | |
| Form 6-K IsoEnergy Ltd. For: Feb 27 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +6.92% | |
| IsoEnergy Highlights Strong Jurisdictional Rankings in the Fraser Institute's 2026 Annual Survey of Mining Companies and Files Fiscal 2025 Annual Report | Press release | PR Newswire | +0.00% | +6.92% | |
| Form D IsoEnergy Ltd. | SEC filing · Form D | SEC EDGAR | -0.38% | +0.19% | |
| Form 6-K IsoEnergy Ltd. For: Jan 27 | SEC filing · Form 6-K | SEC EDGAR | +0.71% | +5.74% | |
| IsoEnergy Completes C$25 Million Concurrent Private Placement with NexGen Energy | Press release | Canada Newswire | — | +0.80% | |
| IsoEnergy Completes C$57.5 Million Bought Deal Financing | Press release | PR Newswire | +0.71% | +5.74% | |
| Form 6-K IsoEnergy Ltd. For: Jan 20 | SEC filing · Form 6-K | SEC EDGAR | -0.03% | +8.10% | |
| Form 6-K IsoEnergy Ltd. For: Jan 20 | SEC filing · Form 6-K | SEC EDGAR | +2.53% | +1.96% | |
| IsoEnergy Commences 2026 Winter Drilling Program at the Larocque East Project, Athabasca Basin | Press release | Canada Newswire | +2.53% | +1.96% | |
| IsoEnergy Ltd. Announces $50 Million Bought Deal Financing | Press release | Canada Newswire | -4.83% | +3.37% | |
| Form F-10 IsoEnergy Ltd. | SEC filing · Form F-10 | SEC EDGAR | -10.17% | -6.17% | |
| Form 6-K IsoEnergy Ltd. For: Jan 07 | SEC filing · Form 6-K | SEC EDGAR | +2.46% | +4.36% | |
| IsoEnergy Initiates Bulk Sample Program at the Tony M Uranium Mine in Utah, a Key Step Toward a Potential Restart Decision | Press release | PR Newswire | +2.46% | +4.36% | |
| Form 6-K IsoEnergy Ltd. For: Dec 30 | SEC filing · Form 6-K | SEC EDGAR | — | +2.02% | |
| IsoEnergy Acquires Additional Securities in Premier American Uranium Inc. | Press release | PR Newswire | — | +2.02% | |
| Form 6-K IsoEnergy Ltd. For: Dec 03 | SEC filing · Form 6-K | SEC EDGAR | -2.63% | +2.85% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ISOU section they belong to.
Where else ISOU is measured.
ISOU earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is IsoEnergy Ltd. Common Shares's median reaction calculated?
Every labeled ISOU 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 132 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. 42% of ISOU'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 ISOU'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.