GraniteShares 2x Long MU Daily ETF is trading sharply higher by +10.47% in pre-market on June 17, 2026, driven by a major development for its underlying asset. - Micron Technology (MU) reportedly secured approval to supply its HBM4 memory to Nvidia, reinforcing its role as a key AI memory supplier. - This news, alongside a broader rebound in AI semiconductor names and stronger NASDAQ futures, is boosting chip and memory stocks. - The market also anticipates the FOMC decision today, with the information technology space stabilizing from recent underperformance.