["International Journal of Finance &Economics, EarlyView. ", "\nABSTRACT\nThis study examines the evolving relationship between large U.S. Financial institutions and Big Tech firms amid rising financial stress driven by global crises, including the COVID‐19 pandemic, the Russia‐Ukraine war, and inflationary shocks. Using weekly data from January 2013 to December 2024, the study employs the Quantile‐VAR (Q‐VAR) framework and the Financial Stress Index (FSI) to evaluate net pairwise and extended joint connectedness across various market regimes. Findings reveal that most Big Tech stocks affect financial stress but this reverses in bull markets. Bank stocks’ causal footprint on financial stress is obvious in all conditions and Morgan Stanley concentrates and leads systemic causality in bull markets. Overall, Big Tech stocks display weaker connection with the FSI but play a major role in bear markets, the Covid‐19 and the Russia‐Ukraine war crises. The results suggest that technology firms are poised to play an increasingly dominant role in financial intermediation, potentially merging with or replacing traditional banks, especially during future crises, offering critical insights for investors, regulators, and policymakers.\n"]