QQQ loses 5.49% as tariff responses widen and ISM services slows

QQQ opened down 4.13% and finished down 5.49%, trailing SPY's 4.98% decline by 0.51 percentage point. Tariff developments broadened as Canada announced a 25% levy on non-USMCA U.S.-made autos, the White House considered a critical-minerals investigation, and exemptions covered semiconductors, pharmaceuticals, and oil. March ISM services fell to a nine-month low of 50.8, while Fed Governor Lisa Cook said tariff uncertainty could weaken the economy.