(Reuters) - HSBC Holdings Plc's ( HSBC ) biggest Asian investor, China's Ping An Insurance Group Co, voted against the reappointment of departing chief executive Noel Quinn as a director at the bank's shareholder meeting, Bloomberg News reported on Saturday.

Ping An lodged a protest vote against Quinn's leadership at the meeting on Friday, the report added, citing people familiar with the matter.

Ping An and HSBC ( HSBC ) did not immediately respond to requests for comment.

Quinn, who has announced he will step down as chief executive once a successor is appointed, last year defeated Ping An's long campaign to get HSBC ( HSBC ) to spin off its Asia business.