Stocks and oil prices drift, while South Korean AI darling SK Hynix leaps in its Wall Street debut

Oil prices eased following earlier fluctuations as a series of unclaimed airstrikes hit Iran after the United States said it finished its attacks. The price for a barrel of Brent crude oil, the international standard, fell 0.9% to $75.63.

That’s above its $72 price from the start of the week, but it’s still well below its wartime peak of nearly $120. The worry is that continued fighting could block oil tankers from the Strait of Hormuz and prevent the delivery of crude from the Persian Gulf to customers worldwide.

President Donald Trump said on his social-media platform that he agreed to continue talks with Iran but also that the United States told it “in no uncertain terms, that the Cease Fire is OVER!”

With the wait ongoing for what will happen next with the strait, some of the strongest action on Wall Street was for the U.S. trading debut of a South Korean tech giant, SK Hynix.

The chip company raised roughly $26.5 billion by selling American depositary shares at a price of $149 each. That price jumped immediately after the ADRs began to trade on the Nasdaq in the midday hours, and it was most recently up 13.4%.

SK Hynix's stock in Seoul has already surged 634% over the last year thanks to euphoria around artificial-intelligence technology. The boom has created real profits thanks to surging demand for computer memory. But it’s also raised worries that AI stock prices have shot too high and that all the world’s spending on chips and data centers won’t be able to produce enough productivity and profit growth to make it worth it.

Beyond the sharp recent swings for AI stocks, the focus on Wall Street is shifting to the upcoming reporting season for companies’ profits during the spring.

Delta Air Lines said it was able to absorb higher fuel prices from April through June because of strong demand from customers to fly, including a wide range of corporate travelers. Its profit and revenue topped analysts’ expectations, and it gave a forecasted range for profit in the summer whose midpoint was above analysts’ expectations.

Delta’s stock fell 2.2%, though, after coming into the day with a strong 28.2% rise for the year so far.

Companies across industries will need to produce big growth in profits to justify the big moves for their stock prices, which are broadly near records. Next week will feature earnings reports from many of the biggest U.S. banks, including Bank of America, Citigroup, JPMorgan Chase, Goldman Sachs and Wells Fargo on Tuesday alone.

Eleswhere on Wall Street, Circle Internet Group rose 5.9%. The company behind the USDC cryptocurrency, which is supposed to keep the value of $1, said it won U.S. regulatory approval to establish a bank. It will operate under the name Circle National Trust, and CEO Jeremy Allaire said the move “marks a defining step in bringing blockchain technology and digital assets into the core of the U.S. financial system.”

WD-40's stock jumped 10.7% after reporting much stronger profit for the latest quarter than analysts expected.

In the bond market, Treasury yields held relatively steady as oil prices drifted. The yield on the 10-year Treasury remained at 4.55%, where it was late Thursday.

High yields have shaken financial markets worldwide recently. They've climbed on worries about expensive oil and high inflation, which could push the Federal Reserve and other central banks to raise interest rates.

Higher rates can keep a lid on inflation, but they also slow the economy and hurt prices for all kinds of investments.

In stock markets abroad, indexes were mixed. South Korea’s Kospi jumped 2.5%, and Japan’s Nikkei 225 rose 1.2% for two of the world’s bigger moves. Stocks fell 1% in Shanghai.

AP Business Writers Chan Ho-him and Matt Ott contributed to this report.