AIamond
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Media Sentiment Index

How do news sources shift their market sentiment over time? This index measures editorial bias across — AI-analysed articles from more than 90 sources.

Methodology

Each article from our RSS feed network is analyzed by an advanced AI language model, which classifies it on a continuous sentiment scale from −1.0 (strongly bearish) to +1.0 (strongly bullish). Articles are grouped by source and ISO week. We compute the mean sentiment, standard deviation, and the proportion of bullish (> 0.15), bearish (< −0.15), and neutral articles per source per week. The divergence score measures how much sources disagree on a given market context.

Citation: AIamond (2026). Weekly Media Sentiment Index. Available at: https://aiamond.com/research

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