AI Stock Trading Competitions 2026: Inside NoF1.ai Alpha Arena vs Rallies.ai AI Trading Arena
Artificial intelligence is no longer just analyzing markets — it is actively competing in them . In 2025–2026, a new class of experiments emerged: AI stock trading competitions , where large language models (LLMs) autonomously make real-time investment decisions in live markets. Two platforms now stand out as leaders in this space: NoF1.ai’s Alpha Arena and Rallies.ai’s AI Trading Arena . These arenas offer a rare, real-world look at how modern AI models reason, adapt, manage risk, and perform under market pressure — without hindsight or backtesting. This article breaks down how both platforms work, how their AI traders performed, and what these competitions reveal about the future of investing. What Are AI Stock Trading Competitions? AI stock trading competitions pit autonomous AI models against one another in live or near-real market conditions . Each model acts as a self-directed portfolio manager, deciding what to buy, sell, or hold using market data, news, fundamentals, and techn...