Robotics stocks jumped in overnight trading. Guardforce AI rose nearly 35%, Nauticus Robotics rose 29%, Richtech Robotics rose nearly 10%, Serve Robotics rose 2%.

Verisign stock jumped over 3% in overnight trading. Berkshire Hathaway continued its purchases of Verisign between Dec 31 to Jan 3, buying about $4.1 million of the company that provides Internet domain registry and other services. The small recent buys, about 20,044 shares, were made at an average price of nearly $205 a share, according to a form 4 filing with the Securities and Exchange Commission late Friday. Berkshire now owns 13.3 million shares of Verisign, a roughly 14% stake worth about $2.7 billion.

Shares in Cerence AI continued to rise 4.5% in overnight trading after zooming 143.76% on Friday amid the announcement of an automotive collaboration with chipmaker Nvidia.