A researcher at Two Sigma Investments adjusted the hedge fund’s investing models without authorization, the firm has told clients, leading to losses in some funds, big gains in others and fresh regulatory scrutiny.

Google Gemini 3.0 vs ChatGPT 5.1 and Claude Sonnet 4.5
When TechRadar put Gemini 3.0 Pro, ChatGPT 5.1, and Claude Sonnet 4.5 to the test on a real coding assignment,






