Group 1 - IREN Limited, formerly known as Iris Energy, is involved in building data centers for Bitcoin mining and AI startups, and has recently secured a contract with Microsoft [1][2] - The company issued nearly 40 million shares at $41.12 per share and a $1 billion convertible bond to finance its data center operations [1] - IREN operates a vertically integrated data center business, managing both computing hardware and infrastructure while engaging in Bitcoin mining [2] Group 2 - There is a belief that certain AI stocks may offer greater upside potential and carry less downside risk compared to IREN as an investment [3]