What is an ATH? If you're a cryptocurrency trader, you've probably heard of it at least once. Recently, I was reminded of how important this concept really is.

All Time High, or ATH, refers to the highest price an asset has reached from the past up to now. It’s not just a number; it also symbolizes market bullishness and expectations. Bitcoin, for example, has repeatedly broken its ATH. Recently, it has reached the $126K range.

But here’s the tricky part. Buying at the moment an asset hits its ATH usually results in a loss. Many traders fall into this trap. Because, after surpassing the ATH, the market typically enters a correction phase. Supply suddenly floods the market, and profit-taking selling pressure increases.

So, what should you do when an ATH appears? Based on experience, technical analysis becomes truly crucial. Use Fibonacci retracements and moving averages (MA) to gauge the price momentum. Fibonacci ratios like 23.6%, 38.2%, 50%, 61.8%, and 78.6% often serve as support and resistance levels. These are not just numbers; they are levels that market participants are consciously aware of.

The same applies to moving averages. If the price drops below the MA, it could indicate a downtrend. Conversely, if it stays above, the trend might be bullish. In cryptocurrency trading, this judgment can make the difference between profit and loss.

Trading near the ATH involves three stages. First is the action phase, where resistance is broken. Next is the reaction phase, where a correction occurs. Finally, the resolution phase confirms whether the trend continues or reverses. It’s important not to rush and to observe candlestick patterns and other signals to make informed decisions.

Personally, I feel many investors hesitate whether to sell all or part of their position when an asset hits an ATH. Holding long-term is also an option. But that decision must be made calmly. It’s essential to analyze whether the current ATH is just temporary or a genuine breakout.

Using Fibonacci extensions (1.270, 1.618, 2.000, 2.618) to predict the next resistance levels is also effective. This helps set new target prices. Profit-taking points should be predetermined. Only increase your position when the risk-reward ratio is favorable—that’s the fundamental rule.

When encountering an ATH, the key is to stay psychologically calm. Avoid relying on intuition; base your decisions on data and analysis. The cryptocurrency market tends to be emotional, so sticking to your rules is crucial for survival.