Love it or hate it, artificial intelligence dominated another year in tech. As AI firms like OpenAI and Anthropic raced to release smarter models, the largest tech firms mapped out massive data ...

A lot happened in 2025. Luckily, charts can help make sense of it all. Here are some of HBR’s most popular, topical, and important charts of the year. They cover a wobbly economy, an explosion of ...

Net change measures a security's price difference from one day to the next. Learn its role in stock analysis, how it's used ...

The gold/silver ratio appears to be in free fall. There is a fractal setup on the chart similar to the 2010/2011 silver rally ...

Volume analysis examines how the number of traded shares affects a security's price. Discover how this method is integral to ...

Stock charts are key for technical trading. The use of a simple picture can tell you the story of a complex topic — and ...