One of the most turbulent and volatile weeks on Wall Street — driven by U.S. tariff announcements, countermeasures, and the suspension of most duties — ended on a positive note: The Nasdaq rose by 2.1% on Friday, the Dow Jones gained 1.6%, and the S&P 500 climbed 1.8%, following a White House statement that President Donald Trump is optimistic about the possibility of reaching a trade agreement. For the week, the indices rose 7.3%, 5%, and 5.7%, respectively.