Recently, when backtesting trading strategies, I found that many people have quite a few misconceptions about MACD parameter settings. Instead of trying to find the perfect parameter combination, it's more about finding the one that best suits your trading style.

Let me share an interesting observation. I compared the performance differences of MACD (12-26-9) and MACD (5-35-5) on Bitcoin daily charts, using data from the first half of last year. The results are quite clear: the more sensitive one (5-35-5) generates signals nearly twice as often as (12-26-9), but the proportion of signals that actually lead to significant profits is actually lower. It's like looking at the market with a magnifying glass—you can catch more fluctuations, but you're also more easily confused by noise.

Regarding MACD parameter settings, most people start with the default (12-26-9). This set of parameters is widely used because it balances stability and practicality. The fast EMA (12) captures short-term momentum, the slow EMA (26) observes long-term trends, and the signal line EMA (9) helps filter out noise. More importantly, since these are the default values on major trading platforms, there's an invisible consensus effect in the market—key signals tend to attract more attention, which in turn enhances their reference value.

However, if you're a short-term trader or operating in the highly volatile crypto market, (12-26-9) might feel a bit sluggish. In such cases, you might consider parameters like (5-35-5) or (8-17-9), which react faster but come with more noise, leading to a higher rate of false signals. Conversely, if you're a long-term investor, combinations like (24-52-18) can help you see the trend more clearly and reduce the impact of short-term fluctuations.

The most common pitfall when adjusting MACD parameters is overfitting. Many people deliberately tweak parameters to fit past market data perfectly, aiming for flawless backtest results. But this often leads to poor real-world performance. It's like copying answers on a test without understanding—they may look good on paper but are worthless in practice.

My advice is to choose a set of parameters and use them for long-term observation and backtesting. If you notice that this set performs poorly in recent periods, consider making slight adjustments. The key is to align with your trading logic and market cycles, rather than blindly chasing the so-called optimal parameters. In reality, there is no such thing as a universally optimal solution—only the one that fits you best.

For beginners, I still recommend starting with (12-26-9). Once you're familiar with it, you can adjust based on your trading habits. Some advanced traders monitor two sets of MACD parameters simultaneously for validation, but this requires the ability to accurately judge which signals are truly effective—raising the bar for decision-making skills. In short, MACD is just a tool; the real key is to rely on backtesting, review, and live observation to find the approach that works best for you.