DeepSeek topped the Apple AppStore chart and sparked fears the Chinese company is quickly catching up with OpenAI's ChatGPT while costing far less.

The Nasdaq could face market-cap losses of nearly $1 trillion if premarket declines hold into the close of trading.

KEY TAKEAWAYS A slew of artificial intelligence stocks, including chip maker Nvidia, are tumbling in premarket trading Monday after Chinese startup DeepSeek released a cutting-edge AI model that runs on less-advanced chips and at a lower cost than U.

DeepSeek threat to Nvidia sales? The group is expected to generate around $197.3 billion in revenue in the coming fiscal year, which ends in January of 2026, with net income of ar