Apple will announce quarterly financial results one day later than planned next week, to avoid reporting on the day of a memorial service for Silicon Valley business leader Bill Campbell, a mentor to former Apple chief Steve Jobs and other tech leaders.

The world's most valuable publicly traded company was scheduled to report Monday on its performance for the first three months of the year. Instead, Apple said it will report on Tuesday "out of respect" for Campbell's friends and family.

Though little-known outside Silicon Valley, the 75-year-old Campbell was a respected industry figure who advised leaders at Apple, Google and other firms. The former CEO and chairman of Intuit died Monday of cancer.

Apple said a number of its executives and employees would attend the service.