Aurora Cannabis Inc. - Common Shares (ACB)
How ACB actually reacts to news — the realized, point-in-time move the market made, measured across 344 labeled events over the last three years with zero look-ahead.
ACB’s median reaction, across the day.
Half of all Aurora Cannabis Inc. - Common Shares news events land between -1.99% and +1.02% at 30 minutes.
Reaction stats as of 2026-08-13. Reaction = percent move vs. the price at the news timestamp.
Email me when ACB moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ACB’s baseline. Nothing else.
Get “How ACB reacts to news” as a PDF.
A free one-page summary: ACB’s median reaction to news and the full breakdown by event type — the numbers on this page, in one page.
Recent ACB events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K AURORA CANNABIS INC For: Aug 13 | SEC filing · Form 6-K | SEC EDGAR | -0.26% | -1.30% | |
| AURORA CANNABIS INC. RESPONDS TO PRESS RELEASE OF CURALEAF HOLDINGS, INC. REGARDING INTENTION TO LAUNCH UNSOLICITED TAKE-OVER BID | Press release | Canada Newswire | — | +0.00% | |
| Canadian Investment Regulatory Organization Trade Resumption - ACB | Press release | Canada Newswire | — | +0.00% | |
| Canadian Investment Regulatory Organization Trading Halt - ACB | Press release | Canada Newswire | — | +0.00% | |
| Curaleaf Announces Intention to Launch Take-Over Bid for Aurora Cannabis to Solidify its Position as the Global Cannabis Industry Leader | Press release | Canada Newswire | +0.00% | +4.66% | |
| Form 6-K AURORA CANNABIS INC For: Aug 11 | SEC filing · Form 6-K | SEC EDGAR | — | +0.00% | |
| Aurora, a Global Leader in Medical Cannabis, Announces Results of 2026 Annual General Meeting | Press release | PR Newswire | +0.33% | — | |
| Form 6-K AURORA CANNABIS INC For: Aug 10 | SEC filing · Form 6-K | SEC EDGAR | +0.33% | — | |
| Aurora Cannabis Announces Fiscal 2027 First Quarter Results | Press release | Canada Newswire | +1.09% | +5.82% | |
| Form 6-K AURORA CANNABIS INC For: Aug 05 | SEC filing · Form 6-K | SEC EDGAR | +1.09% | +5.82% | |
| Form 6-K AURORA CANNABIS INC For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +1.09% | +5.82% | |
| Aurora Receives Support from Leading Independent Proxy Adviser Institutional Shareholder Services Inc. for the 2026 Annual General Meeting of Shareholders | Press release | Canada Newswire | +0.74% | +1.48% | |
| Form 6-K AURORA CANNABIS INC For: Jul 27 | SEC filing · Form 6-K | SEC EDGAR | +0.74% | +1.48% | |
| Form 6-K AURORA CANNABIS INC For: Jul 22 | SEC filing · Form 6-K | SEC EDGAR | +0.19% | +1.51% | |
| Form 6-K AURORA CANNABIS INC For: Jul 23 | SEC filing · Form 6-K | SEC EDGAR | +0.19% | +1.51% | |
| Safari Flower Company, a Wholly Owned Subsidiary of Aurora Cannabis, Receives EU-GMP Certification at Niagara Facility | Press release | Canada Newswire | +0.19% | +1.51% | |
| Aurora Cannabis to Host First Quarter 2027 Investor Conference Call | Press release | Canada Newswire | +0.19% | +1.51% | |
| Aurora Named to TIME Canada's Best Companies 2026 List | Press release | Canada Newswire | +0.18% | +0.37% | |
| Form 6-K AURORA CANNABIS INC For: Jul 08 | SEC filing · Form 6-K | SEC EDGAR | +0.75% | +0.75% | |
| Form 6-K AURORA CANNABIS INC For: Jul 09 | SEC filing · Form 6-K | SEC EDGAR | +0.18% | +0.37% | |
| Aurora Cannabis Inc. Announces Filing and Mailing of the Management Information Circular in Connection with the Annual General Meeting of Shareholders | Press release | Canada Newswire | +0.95% | +1.51% | |
| Form 6-K AURORA CANNABIS INC For: Jul 08 | SEC filing · Form 6-K | SEC EDGAR | +0.95% | +1.51% | |
| Aurora Cannabis Announces Full Year and Fiscal 2026 Fourth Quarter Results with Record Annual Revenue and Adjusted EBITDA¹ | Press release | Canada Newswire | -8.04% | -0.96% | |
| Form 40-F AURORA CANNABIS INC For: Mar 31 | SEC filing · Form 40-F | SEC EDGAR | -8.04% | -0.96% | |
| Form 6-K AURORA CANNABIS INC For: Jun 11 | SEC filing · Form 6-K | SEC EDGAR | -8.04% | -0.96% | |
| Aurora Deepens its Impact for Veterans Across Canada | Press release | Canada Newswire | -2.47% | -3.57% | |
| Aurora Cannabis to Host Fourth Quarter and Fiscal Year 2026 Investor Conference Call and File Related Year End Information | Press release | Canada Newswire | -0.29% | +6.38% | |
| Form 6-K AURORA CANNABIS INC For: May 28 | SEC filing · Form 6-K | SEC EDGAR | -0.29% | +6.38% | |
| Form 6-K AURORA CANNABIS INC For: May 21 | SEC filing · Form 6-K | SEC EDGAR | +0.42% | -3.08% | |
| Aurora Granted Plant Breeders' Rights, Strengthening Leadership in Cannabis Science | Press release | Canada Newswire | -0.30% | +0.30% | |
| Europe’s Cannabis Boom Is Accelerating as Billions Flow into Licensed Markets | Press release | GlobeNewswire | -0.30% | +0.30% | |
| Form 6-K AURORA CANNABIS INC For: May 14 | SEC filing · Form 6-K | SEC EDGAR | -0.30% | +0.30% | |
| Aurora Advances Global Medical Cannabis Portfolio with New Product Launches Across Key International Markets | Press release | Canada Newswire | +0.29% | -0.87% | |
| Form 6-K AURORA CANNABIS INC For: Apr 28 | SEC filing · Form 6-K | SEC EDGAR | +0.29% | -0.87% | |
| Canadian Investment Regulatory Organization Trade Resumption - ACB | Press release | Canada Newswire | -0.26% | -1.17% | |
| Canadian Investment Regulatory Organization Trading Halt - ACB | Press release | Canada Newswire | -1.52% | -3.68% | |
| Form 6-K AURORA CANNABIS INC For: Apr 16 | SEC filing · Form 6-K | SEC EDGAR | +0.41% | +0.27% | |
| Aurora Cannabis Accelerates Global Medical Cannabis Leadership with Accretive Acquisition of Safari Flower Company, Expanding EU GMP Capacity to Serve Growing High Margin International Markets | Press release | Canada Newswire | +2.63% | +1.94% | |
| Form 6-K AURORA CANNABIS INC For: Apr 15 | SEC filing · Form 6-K | SEC EDGAR | +2.63% | +1.94% | |
| Aurora Recognized for Executive Gender Diversity by the Globe & Mail for Second Consecutive Year | Press release | Canada Newswire | +0.94% | -3.75% | |
| Form 6-K AURORA CANNABIS INC For: Mar 30 | SEC filing · Form 6-K | SEC EDGAR | +0.94% | -3.75% | |
| Form 6-K AURORA CANNABIS INC For: Feb 17 | SEC filing · Form 6-K | SEC EDGAR | -1.39% | -1.39% | |
| Aurora to Participate in the TD Cowen 46th Annual Health Care Conference | Press release | PR Newswire | -1.39% | -1.39% | |
| Aurora to Ring the Nasdaq Closing Bell on Wednesday, February 18, 2026, Reinforcing Strategic Focus on Global Medical Cannabis | Press release | PR Newswire | +1.47% | +4.41% | |
| Form 6-K AURORA CANNABIS INC For: Feb 12 | SEC filing · Form 6-K | SEC EDGAR | +1.47% | +4.41% | |
| Aurora Advances Global Medical Growth Strategy with Portfolio Expansion in Australia & New Zealand | Press release | PR Newswire | -1.12% | -3.37% | |
| Aurora Cannabis Announces Filing of Prospectus Supplement for At-The-Market Offering Program | Press release | PR Newswire | -8.58% | -8.09% | |
| Aurora Cannabis Announces Fiscal 2026 Third Quarter Results | Press release | PR Newswire | -8.58% | -8.09% | |
| Form 6-K AURORA CANNABIS INC For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -8.58% | -8.09% | |
| Form 6-K AURORA CANNABIS INC For: Feb 04 | SEC filing · Form 6-K | SEC EDGAR | -8.58% | -8.09% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ACB section they belong to.
More of the dataset.
ACB earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Aurora Cannabis Inc. - Common Shares's median reaction calculated?
Every labeled ACB 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 344 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. 43% of ACB'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 2026-08-13.
Does ACB'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.