In 2025, state policies are playing a bigger role in shaping business performance than the economy itself. New laws are changing how companies handle labor, the environment, privacy, energy, and even how they report their impact. A recent study found that nearly one-third of businesses have faced lo
Have you ever wondered how well stock prices and trading volume can be analyzed together? Scientists have come up with a tweaked version of an existing model, called the Barndorff-Nielsen and Shephard stochastic volatility model. Instead of trying to figure out instantaneous variance, which is hard
Financial experts rely on factor models to grasp how different assets behave together and manage risks. But after major events like the COVID-19 pandemic, these models might need a reality check. That's where the mosaic permutation test comes in. It's a clever way to ensure your models are still doi
