Musk’s net worth fell almost 4% as of midday Tuesday, dropping to almost exactly $100 billion below his all-time high of $464 billion.

Tesla stock was—very—weak again Tuesday as investors digested early-year sales data, trying to determine whether a drop was due to random fluctuations or a more serious problem, such as whether CEO Elon Musk’s political activities are turning off customers.

Tesla stock is crashing today, dropping over 8% and slipping below the $1 trillion valuation for the first time in three months. The stock decline is driven by multiple factors, including falling sales in Europe,