Examples of ATH for some popular currencies (up to 2024):

- **Bitcoin (BTC):** Reached ~ **$69,000** in November 2021.

- **Ethereum (ETH):** Recorded ~ **$4,878** in November 2021.

- **Other currencies:** Each currency has its own ATH based on its historical performance.

### Why is it important to know the ATH?

1. **Performance measurement**: Comparing the current price to its highest level.

2. **Market analysis**: Some investors buy when ATH is broken (bullish signal), or sell when approaching it (resistance).

3. **Alerts**: Many track ATH to make buying or selling decisions.