Group 1 - Nano Nuclear Energy's stock fell 16% this week due to a private placement offering that diluted shareholders, despite being up 26% this year and 500% since going public [1][3] - The company aims to develop portable micro nuclear reactors and filed six patents for its Zeus Microreactor, which is still in development [2] - The private placement sold shares at $27, below the current price of $30, raising $105 million to cover its annual cash burn of $10.5 million [3][4] Group 2 - Nano Nuclear Energy does not expect to have a working product until 2030 or later, and it currently generates no revenue [6] - The company is considered high risk due to its lack of a working product and ongoing capital needs, which dilute long-term shareholder returns [4][6][7] - The investment in Nano Nuclear is viewed as speculative, with the potential for significant losses despite past performance [7]