US benchmark equity indexes ended mixed Friday as traders parsed the latest remarks by a Federal Reserve official.

* New York Fed President John Williams said the future is "highly uncertain" amid mixed signals from recent data.

"I expect (US economic) growth this year to step down from last year's pace in part because of a slowdown in labor force growth due to lower immigration rates," Williams said. "There are many scenarios that could play out, depending on fiscal and trade policies and geopolitical and other developments."

* The Organization for Economic Co-operation and Development cut its outlook for 2025 global economic growth to 3.1% from 3.3% this week, saying US policies will likely hamper trade and further slow China, the world's second-largest economy.

* May West Texas Intermediate crude oil closed up $0.09 to settle at $68.19 per barrel, while May Brent crude, the global benchmark, was last seen up $0.09 to $72.09 even as the trade wars pushed by U.S. President Donald Trump threaten to slow demand growth while supply is on the rise.

* Boeing (BA) shares were up 3.7%. The plane maker has reportedly won a multibillion-dollar contract to design and build a fighter jet for the US Air Force, beating Lockheed Martin (LMT). Shares of Lockheed tumbled 5.9%.

* Nike (NKE) shares decreased 5.7%. The sportswear giant late Thursday flagged revenue and gross margin declines in its fiscal Q4 amid tariffs and the company's ongoing transformation efforts.