** Shares of Rivian Automotive RIVN.O and Lucid LCID.O fall more than 5% after the bell
** Rivian posts bigger-than-expected loss on higher costs, lower credit income
** RIVN reports Q2 adjusted loss per share of 80 cents vs. analysts' average estimate of 65 cents, according to data compiled by LSEG
** RIVN also flags bigger adjusted core loss this year, between $2 billion and $2.25 billion, vs. $1.7 billion to $1.9 billion prior forecast
** Lucid cuts annual production forecast as global trade tensions sting
** LCID expects to make between 18,000 and 20,000 vehicles in 2025, vs. prior forecast of 20,000 vehicles
** LCID posts Q2 revenue of $259.4 million, missing estimates of $279.9 million
(Reporting by Anshuman Tripathy)
((Anshuman.Tripathy@thomsonreuters.com))