Jordi Mercader

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The bias of the immediate and the myths that fall: do not trust what you have experienced recently

The availability bias (see appendix), described by Amos Tversky and Daniel Kahneman in 1973, explains that we tend to overvalue recent or easily remembered events, confusing their ease of recall with their actual probability. To avoid technical jargon and anglicisms, I call it the recency bias. Basically, we think that what happened recently is the…

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Stock market sales (2025)?

Sharp falls in major stock indices This is the most common way we would continue to communicate regarding the recent stock market crashes caused by the tariff war initiated by Trump. As we see in the image above, the Nasdaq 100 has fallen by nearly 20%, the S&P 500 by 15%, and the Stoxx Europe…

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December, January and other temporary effects on markets: reality or myth?

Historically, financial markets have exhibited certain seasonal patterns that studies have identified as statistical anomalies. Phenomena such as the Christmas rally, the January effect and other seasonal effects have attracted the attention of investors and analysts for decades. However, the increased efficiency of markets in recent years has caused these effects to lose strength and…

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Financial planning and good investment habits

Plan, process, product and not the other way around. Investing is one of the best ways to secure our financial future, but doing it correctly is not always easy. The key to long-term success lies in good financial planning, which involves understanding our life and financial goals, defining investment horizons, and, from there, making the…

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