Howard Lutnick's Cantor buys $126 million of surprising AI stock

Group 1 - Cantor Fitzgerald has invested $126 million in Iren Limited, highlighting its transition from a bitcoin miner to a significant player in AI infrastructure [1][4][5] - Cantor Fitzgerald's portfolio market value has decreased to $6.59 billion from $10.3 billion, reflecting a 20.75% net outflow [2][5] - The firm made 88 new stock purchases, added to 58 stocks, sold out of 241 stocks, and reduced holdings in 52 stocks, with a turnover rate of 72.95% [5][6] Group 2 - Other notable investors, such as Citadel and Appaloosa, have also made significant investments in AI-related stocks, with Citadel investing $2.52 billion in Amazon and increasing its Nvidia stake to nearly $4 billion [2][3] - David Tepper's Appaloosa invested nearly $285 million in Micron, while Renaissance Technologies added $520 million to its Micron holdings [3] - Ray Dalio's Bridgewater made a $253 million addition to Nvidia, focusing on AI infrastructure alongside Oracle and Micron [3]