Date: May 30, 2025. The S&P 500 concluded May with its strongest performance since 1990, despite renewed concerns over tariffs following Trump's announcement to raise US steel import tariffs to 50%. Costco managed to navigate the tariff turmoil, unlike other retailers. In corporate news, Hadiran CEO Power discussed the importance of re-shoring high-skill labor, while Scholl emphasized the role of AI automation in reducing labor costs. Jamie Dimon warned regulators about potential panic in the bond market, and a critical OPEC+ decision this weekend could potentially lead to a 10% drop in crude-oil prices. Regeneron's COPD treatment trial has disappointed investors. Powered by LabCat AI research tools.