Defiance Daily Target 2X Long IREN ETF is trading 5.7% up today, amplifying a significant recovery in Iris Energy (IREN) shares. - The rebound is fueled by Iris Energy's strategic acquisition of Nostrum Group, expanding its AI cloud and data center footprint into Europe. - Sentiment is further boosted by Diker Management LLC's new investment in IREN, acquiring 40,000 shares valued at approximately $1.51 million. - The ETF's 2x daily leverage is amplifying IREN's gains, following recent selling pressure.