GraniteShares 2x Long MRVL Daily ETF is trading 14% up today, amplified by its 2x leverage, following significant positive developments for its underlying asset, Marvell Technology (MRVL). * Marvell Technology's stock surged over 5% in premarket trading on June 18, 2026, after announcing the shipment of over 5 million coherent photonic integrated circuits. * Several analysts, including KeyBanc, raised price targets for Marvell on June 18, 2026, citing strong growth potential in AI infrastructure and data center networking.