SpaceX shares, which debuted as the most volatile among large-cap peers, have traded in a $10 range around $140 for the past three weeks. Implied volatility, a measure of options costs, has dropped significantly from over 120 before its earnings report to 57, according to ThinkOrSwim data. Options traders are noting this shift, with weekly contracts expiring September 25 pricing in an 11% implied swing. Bulls attribute the calm to insider conviction and the stock's inclusion in major indexes like the Nasdaq-100 and Russell 1000.