(Updates)
** Shares of autonomous trucking firm TuSimple Holdings Inc
TSP.O fall as much as 43% to all-time low of $3.61
** Stock on course for worst day ever
** TSP says the board terminated CEO Xiaodi Hou
** Hou has been removed from his position as chairman of the
board and as a member of the Government Security Committee
effective Oct. 30
** TSP's Executive Vice President of Operations Ersin Yumer
to serve as interim CEO while co searches for a new CEO
** Company says action taken in connection with an ongoing
investigation led by the board's audit committee that concluded
a change of CEO was necessary
** Stock has fallen ~89% this year
(Reporting by Ananya Mariam Rajesh in Bengaluru)
((AnanyaMariam.Rajesh@thomsonreuters.com ; Twitter: https://twitter.com/AnanyaMariam))