U.S. stocks closed a volatile week higher, with the S&P 500 and Nasdaq Composite gaining 0.4% and 0.3% respectively on Friday, and over 1% for the week. The Dow Jones Industrial Average also rose Friday but finished the week lower. Oil prices retreated as President Trump indicated the U.S. would continue talks with Iran, with Brent crude futures falling 0.4% to $76.01 a barrel.

SK Hynix completed the largest-ever U.S. share sale by a foreign firm, raising nearly $27 billion. The South Korean chipmaker's stock jumped about 13% from its offering price. However, the broader semiconductor sector faced headwinds, with the PHLX Semiconductor index remaining flat Friday and down nearly 9% for the month.

Delta Air Lines reported a nearly 20% increase in second-quarter operating revenue, driven by strong customer demand for travel despite higher fares. Rising fuel costs impacted profits, but net income exceeded analyst expectations. Nevertheless, Delta shares declined 1.6%.

Investors poured a record over $1 trillion into U.S. exchange-traded funds in the first half of the year, with actively managed funds capturing a larger share of inflows. This trend suggests a growing appetite for diversified investment vehicles.