Texas Instruments announced fourth-quarter earnings above expectations, but highlighted challenges with declining revenues year-over-year.

The major indexes added to strong weekly gains. Tesla and AI chipmakers such as Nvidia and Arm are testing key levels.

Boeing (NYSE: BA) fell 3% after it issued preliminary fourth quarter results that trailed estimates. Results were impacted by the International Association of Machinists and Aerospace Workers (IAM) ...

Chipmaker Texas Instruments beat analyst estimates for the fourth quarter but offered mixed guidance. TXN stock slid in extended trading.