Scott Galloway said SpaceX shares remain heavily overvalued, estimating their worth at $10 to $30 even after the stock closed at $143.34 on Tuesday. Speaking on his podcast, The Prof G Pod, the marketing professor said CEO Elon Musk may be remembered as the greatest engineer of his time but also as a financial engineer, citing SpaceX's roughly 5% public float and its inclusion in the Nasdaq-100, which forced index-tracking funds to buy shares. The stock reached about $225 days after its IPO before falling as much as 53% to roughly $104, then recovering after its first earnings report as a public company and disclosures of multibillion-dollar stakes by other companies. Wall Street's consensus price target is $227.70 based on 31 analysts, with estimates ranging from $115 at HSBC to $800 at Raymond James, but Galloway dismissed the highest target as "creative writing." Other bears include Gary Black and Whitney Tilson, while Peter Diamandis and Gene Munster have defended SpaceX's prospects. Galloway said he would not short the shares because Musk's following and ability to generate enthusiasm could still drive a meme-stock rally.