Canopy Growth Corporation - Common Shares (CGC)
CGC moved a median of -0.77% 30 minutes after news, and -0.94% by the close. How CGC actually reacts to news — the realized, point-in-time move the market made, measured across 1,033 labeled events over the last three years with zero look-ahead.
CGC’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.34% | 41% | 1,032 |
| 30-min | -0.77% | 37% | 1,033 |
| 60-min | -0.88% | 37% | 1,033 |
| to close | -0.94% | 42% | 1,029 |
| Middle 50% of CGC reactions | -2.49% to +0.98% |
|---|---|
| Median reaction (30-min) | -0.77% |
| Measured reactions | 1,033 |
Half of all Canopy Growth Corporation - Common Shares news events land between -2.49% and +0.98% 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 CGC moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to CGC's baseline. Nothing else.
Recent CGC events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K Canopy Growth Corp For: Oct 14 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form DEFA14A Canopy Growth Corp | SEC filing · Form DEFA14A | SEC EDGAR | — | — | |
| Canopy Growth’s Smiths Falls Facility Becomes Canada’s Only EU GMP-Certified Site Combining Softgel Manufacturing With Primary Packaging of Softgels, Oral Liquids and Dried Cannabis Flower | Press release | Business Wire | +0.62% | +0.07% | |
| Form DEFA14A Canopy Growth Corp | SEC filing · Form DEFA14A | SEC EDGAR | -0.72% | -1.52% | |
| Canopy Growth Appoints Sebastian Blöte as Country Manager for Germany | Press release | Business Wire | -1.06% | -1.55% | |
| Canopy Growth Announces Adjournment of 2026 Annual General and Special Meeting Due to Lack of Quorum | Press release | Business Wire | -0.17% | +0.53% | |
| Form DEFA14A Canopy Growth Corp | SEC filing · Form DEFA14A | SEC EDGAR | +0.08% | +0.48% | |
| Canopy Growth Announces Extension of Proxy Voting Deadline for 2026 Annual General and Special Meeting | Press release | Business Wire | -1.50% | -3.17% | |
| Canopy Growth Expands European Medical Cannabis Supply Into the UK | Press release | Business Wire | +0.27% | +4.56% | |
| Form DEFA14A Canopy Growth Corp | SEC filing · Form DEFA14A | SEC EDGAR | +0.44% | -0.48% | |
| Canopy Growth Reminds Shareholders to Vote Ahead of September 23 Deadline | Press release | Business Wire | -0.97% | +0.90% | |
| Canopy Growth Broadens Australian Medical Cannabis Portfolio With New Formats and Formulations | Press release | Business Wire | -0.92% | -0.58% | |
| Canopy Growth Announces Mailing of Proxy Materials for 2026 Annual General and Special Meeting – Urges Shareholders to Vote Now | Press release | Business Wire | +0.89% | +0.00% | |
| Form DEFA14A Canopy Growth Corp | SEC filing · Form DEFA14A | SEC EDGAR | +0.31% | -0.52% | |
| Canopy Growth Secures Renewed EU GMP Certification at Kincardine as European Medical Cannabis Business Grows | Press release | Business Wire | +0.49% | +0.99% | |
| Form DEFA14A Canopy Growth Corp | SEC filing · Form DEFA14A | SEC EDGAR | +0.89% | +0.00% | |
| Canopy Growth Reports First Quarter Fiscal Year 2027 Financial Results; Delivers 13% Net Revenue Growth with Contributions from All Businesses | Press release | Business Wire | +1.92% | -2.01% | |
| Form 10-Q Canopy Growth Corp For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.92% | -2.01% | |
| Form 8-K Canopy Growth Corp For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | +1.92% | -2.01% | |
| Form ARS Canopy Growth Corp For: Mar 31 | SEC filing · Form ARS | SEC EDGAR | +0.47% | — | |
| Form DEF 14A Canopy Growth Corp For: Sep 25 | SEC filing · Form DEF | SEC EDGAR | +0.47% | — | |
| Form DEFA14A Canopy Growth Corp | SEC filing · Form DEFA14A | SEC EDGAR | +0.47% | — | |
| Canopy Growth to Report First Quarter Fiscal 2027 Financial Results on August 7, 2026 | Press release | Business Wire | +0.21% | -1.27% | |
| Canopy Growth Announces Participation at Upcoming Canaccord Genuity Growth Conference | Press release | Business Wire | +1.09% | +1.26% | |
| Form PRE 14A Canopy Growth Corp For: Sep 25 | SEC filing · Form PRE | SEC EDGAR | +0.68% | +0.94% | |
| Form S-8 Canopy Growth Corp | SEC filing · Form S-8 | SEC EDGAR | +0.20% | -1.99% | |
| Canopy Growth Reports Fourth Quarter and Fiscal Year 2026 Financial Results; Delivers Q4 FY2026 Net Revenue Growth of 27% in Canada Medical and 68% in International Markets Cannabis | Press release | Business Wire | +1.56% | -1.21% | |
| Form 10-K Canopy Growth Corp For: Mar 31 | SEC filing · Form 10-K | SEC EDGAR | +1.56% | -1.21% | |
| Form 8-K Canopy Growth Corp For: Jun 15 | SEC filing · Form 8-K | SEC EDGAR | +1.56% | -1.21% | |
| Canopy Growth Announces Claybourne’s Frosted Flyers Wins ‘Best Infused Pre-Roll' at 2026 Grow Up Awards | Press release | Business Wire | -0.96% | -1.92% | |
| Form SD Canopy Growth Corp | SEC filing · Form SD | SEC EDGAR | -0.93% | -0.94% | |
| Canopy Growth Relaunches Tweed Brand in Germany with New MTL Cannabis Strain Lineup, Marking First International Release following Acquisition | Press release | Business Wire | -1.79% | -2.68% | |
| Form 8-K Canopy Growth Corp For: May 26 | SEC filing · Form 8-K | SEC EDGAR | +0.94% | +5.66% | |
| Canopy Growth Provides Update on Financial Reporting and Announces Fourth Quarter and Fiscal Year 2026 Financial Results to be Presented on June 15, 2026 | Press release | Business Wire | -0.48% | -4.63% | |
| Form 8-K Canopy Growth Corp For: May 15 | SEC filing · Form 8-K | SEC EDGAR | -0.48% | -4.63% | |
| Canopy Growth and Spectrum Therapeutics Expand Medical Portfolio with New 30 and 90-Pack Softgels and Enhanced Dosing Options | Press release | Business Wire | +0.69% | -1.74% | |
| ‘There’s a Tweed for That’: Canopy Growth Announces Tweed Brand Summer Campaign | Press release | Business Wire | -4.03% | -18.12% | |
| Canadian Investment Regulatory Organization Trade Resumption - WEED | Press release | Canada Newswire | -0.86% | +3.77% | |
| Canadian Investment Regulatory Organization Trading Halt - WEED | Press release | Canada Newswire | -2.93% | +1.10% | |
| Canopy Growth Unveils New Brand ‘Deelish’: High THC, Everyday Price | Press release | Business Wire | +1.59% | +7.86% | |
| Canopy Growth’s Apollo Cannabis Clinics Named Best Medical Cannabis Clinic | Press release | Business Wire | +0.26% | -4.80% | |
| Canopy Growth Announces Storz & Bickel Executive Transition | Press release | Business Wire | -1.06% | -4.96% | |
| Canopy Growth Completes Acquisition of MTL Cannabis Creating Canada’s Leading Medical Cannabis Business By Revenue | Press release | Business Wire | +0.97% | -0.97% | |
| Form 8-K Canopy Growth Corp For: Mar 16 | SEC filing · Form 8-K | SEC EDGAR | +0.97% | -0.97% | |
| Canopy Growth Announces MTL Cannabis Shareholder Approval of Acquisition | Press release | Business Wire | +0.00% | +2.68% | |
| Form EFFECT Canopy Growth Corp | SEC filing · Form EFFECT | SEC EDGAR | +1.73% | +0.93% | |
| Canopy Growth Reports Third Quarter Fiscal 2026 Financial Results | Press release | Business Wire | +2.90% | +0.92% | |
| Form 10-Q Canopy Growth Corp For: Dec 31 | SEC filing · Form 10-Q | SEC EDGAR | +2.90% | +0.92% | |
| Form 8-K Canopy Growth Corp For: Feb 06 | SEC filing · Form 8-K | SEC EDGAR | +2.90% | +0.92% | |
| Form S-3 Canopy Growth Corp | SEC filing · Form S-3 | SEC EDGAR | +0.46% | -0.91% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the CGC section they belong to.
Where else CGC is measured.
CGC earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| VIVUS (VVUS) | 1,044 | -0.36% | 41% |
| GraniteShares YieldBOOST CRCL ETF (CRY) | 1,038 | 0.00% | 49% |
| Savara, Inc. (SVRA) | 1,030 | 0.00% | 46% |
| INTREXON CORP (XON) | 1,025 | +0.05% | 52% |
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 Healthcare names, measured the same way →
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How the numbers are made.
How is Canopy Growth Corporation - Common Shares's median reaction calculated?
Every labeled CGC 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 1,033 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. 37% of CGC'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 CGC'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.