Major product launch
🔧 ProductA flagship product or platform is unveiled or ships.
Typical size
1-8%
Timeframe
Announcement move; fundamentals follow over quarters
Evidence
2 logged events
Why it moves the price
Changes the expected revenue trajectory, and for platform businesses can reset the addressable market entirely.
What separates a good call from a naive one
Classic 'buy the rumour, sell the news' territory — anticipation is usually priced in before the event, so stocks often fall on launch day despite a good product. Early sales data weeks later moves the stock more than the reveal.
Measured impact
Every logged event is measured against real closing prices: the move from the close before the event, compared with the S&P 500 over the same window.
Next day
+3.25%
- Median
- +3.25%
- Moved up
- 50% of 2
- vs S&P 500
- +3.23%
After 1 week
+6.10%
- Median
- +6.10%
- Moved up
- 100% of 2
- vs S&P 500
- +4.80%
After 1 month
+11.79%
- Median
- +11.79%
- Moved up
- 100% of 2
- vs S&P 500
- +8.07%
No measured verdict yet — 2 events logged. Three or more are needed before the data says anything useful.
The evidence (2)
Every row is a real event, measured against actual closing prices.
| Date | Stock | What happened | Next day | 1 week | 1 month | vs S&P |
|---|---|---|---|---|---|---|
| Jun 11, 2024 | AAPL | AI feature suite unveiled at WWDC The contrast with the Vision Pro reveal: a launch investors could map to a device upgrade cycle. | +7.26% | +12.19% | +17.84% | +7.02% |
| Jun 5, 2023 | AAPL | Vision Pro headset unveiled at WWDC Classic buy-the-rumour, sell-the-news setup. | -0.76% | +0.01% | +5.74% | -0.57% |
Measured from historical closing prices. Past reactions do not guarantee future ones. Not financial advice.