May 22 - The following are the top stories in the Wall Street Journal. Reuters has not verified these stories and does not vouch for their accuracy.

- Elon's SpaceX postponed a launch of the newest version of its Starship rocket, delaying the debut of a vehicle that is essential to its future.

- Premium cinema brand IMAX IMAX.N is exploring a sale and has approached entertainment companies as potential buyers.

- The Trump administration is awarding $2 billion in grants to nine quantum computing companies, including U.S. government equity stakes.

- Parker-Hannifin PH.N struck a deal to acquire the commercial and defense aerospace unit of Circor from KKR KKR.N for $2.55 billion in cash.

- Exxon Mobil XOM.N is clashing with proxy advisory firms Glass Lewis and ISS over its plan to move its legal home to Texas.