RIVN is trading at $15.14 (8.4% down) in pre-market, extending recent losses. - The decline is driven by broader selling pressure across the EV and growth sectors, alongside investor concerns over a U.S. safety regulator probe into nearly 115,000 Rivian vehicles. - This adds potential recall, legal, or repair-cost risk, further weighing on sentiment after an 8.6% drop on Monday.