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Macro EconomyMediumUpdated•Originally published 23 February 2026•Updated 23 February 2026•
1 min read

US Futures Tumble as White House Imposes 15% Tariff Following SCOTUS Ruling

Key Facts

1S&P 500 futures fell 0.5% and Nasdaq 100 contracts slid 0.6% due to trade policy uncertainty.
2A Supreme Court ruling on tariffs may require the refund of significant fiscal revenue from 2025, potentially increasing debt issuance.
3Most Magnificent Seven stocks declined, except for Alphabet which rose following a Wells Fargo upgrade.

US stock futures extended their decline on Monday, with S&P 500 and Nasdaq 100 contracts falling 0.5% and 0.6% respectively. The sell-off intensified after the Supreme Court ruled to limit presidential authority over tariff impositions, specifically targeting precedents set during the Trump administration. In a swift countermeasure, the current administration announced a 15% blanket tariff, escalating tensions between the executive and judicial branches. This move has heightened fiscal uncertainty, as the tech-heavy Magnificent Seven stocks faced broad selling pressure amid fears of renewed trade volatility. While Alphabet shares remained resilient following a Wells Fargo upgrade, the broader market remains focused on the potential for increased sovereign debt issuance. Investors are now reassessing long-term economic stability as the legal battle over trade policy unfolds.