Tech Trader is a fully autonomous system trading thousands of stocks simultaneously with no human intervention, now for over 7 yrs. Whereas many "automated" or "AI" systems may have a hundred scientists providing the actual intelligence behind the curtain, the creator of Tech Trader consists of just one person, who has long moved on to other interests. It even posts on Twitter as @TechTraderAI. For more information, see https://www.techtrader.ai/