Recently, I’ve seen people in the community ask what ATH is, and I found that many beginners are still a bit unclear about this concept. So today, let’s talk about my understanding of this topic.

To put it simply, ATH (All Time High) is the highest price that a certain asset has reached since it started trading. It sounds straightforward, but its significance in trading is actually quite big. When a coin creates an ATH, that moment is often full of opportunities, and at the same time, it also hides risks.

I’ve seen many traders make mistakes around ATH. A lot of people get carried away by the rally, completely ignoring technical analysis, and simply chasing the price using intuition and FOMO. The result is buying at the peak, and then watching the price retrace. Only then do they regret not having planned ahead.

So what is the correct way to use ATH? From my experience, when the price is approaching its historical high, you need to use technical tools to help you judge. Fibonacci ratios (23.6%, 38.2%, 61.8%, etc.) can help you find key support and resistance levels. Moving averages (MA) are also very useful—they can tell you whether the price trend is moving upward or downward. When you combine these tools, your understanding of the market becomes much clearer.

Price breakouts usually go through three stages. First is the “action” stage: the price breaks through resistance, and trading volume increases noticeably. Next is the “reaction” stage: the rally starts to weaken, buying pressure decreases, and a pullback may occur. Finally is the “resolution” stage: the buying and selling forces change, determining whether this breakout really holds.

After you’ve figured out what ATH is, what’s even more important is learning how to trade during ATH periods. My advice is: first, analyze the candlestick patterns during the breakout—often, the bottom is round or square-shaped. Second, use Fibonacci to find new resistance levels from the low point to the breakout point (1.270, 1.618, 2.000, etc.). Third, set your profit targets and stop-loss levels in advance—this is crucial. Fourth, be cautious when adding positions, and only consider it when the risk-reward ratio is favorable.

In the end, should you sell everything at ATH, sell part of it, or keep holding? That depends on your trading style. If you’re a long-term value investor, you can keep holding, but only if you’ve done thorough analysis. Most people choose to sell part of their holdings to lock in profits. If the Fibonacci extension values line up with the ATH price, it may mean the upward trend is ending—selling everything at that point isn’t unreasonable.

To be honest, ATH isn’t an absolute buy point or an absolute sell point. It’s only a signal the market gives you. Whether you can seize the opportunity still comes down to whether you have a clear trading plan and enough discipline. Traders who can consistently profit during ATH periods usually aren’t relying on luck—they rely on systematic analysis and strict risk management.