Rivian’s inaugural Autonomy & AI Day catalyzed a significant upward move, with the stock surging 12% on heavy volume. The initial reaction to the event was negative, with the stock closing down the prior day. However, a wave of bullish analyst commentary seemingly shifted sentiment aggressively. But with the stock reaching a near two-year high, is this a sustainable rerating or a speculative chase fueled by AI hype?SOUTH SAN FRANCISCO, CALIFORNIA - AUGUST 08: A Rivian electric truck sits parked in front of ...