Tesla launched aggressive US incentives, including free inventory upgrades (up to $2,500 value), 0% APR financing for 72 months on Model 3/Y, and $0 down leases for Model Y, aiming to clear Q4 inventory after Q3 demand was pulled forward. This move follows a December 08 closing price of $439.58 (-3.39%), reflecting pressure from competition and earlier tax credit shifts. News also included Morgan Stanley downgrading TSLA due to demand uncertainty and margin pressure.