Oxana Wieland 2026. Structural Dynamics of Economic Factors and Price Discovery: A Quantitative Analysis of the U.S. Stock Market (S&P 500), 2025–2026. Revue Internationale de la Recherche Scientifique et de l’Innovation (Revue-IRSI). 4, 2 (Apr. 2026), 565–576. DOI:https://doi.org/10.5281/zenodo.19696268.