Check out the companies making the biggest moves premarket:
- Aon — The insurance broker slipped 1.8% after it announced it will buy rival USI Insurance Services from KKR for $17 billion. Aon said the merger will create "the premier U.S. middle-market platform."
- Energy stocks — U.S. oil prices rose more than 3% after the U.S. and Iran exchanged strikes in the Middle East for the first time since July. Energy companies were higher in premarket trading, with Halliburton up more than 2.5% and Chevron up 2%.
- PG & E — The utility company sunk 16% after California lawmakers blocked a proposal that would have limited the amount of money individuals could seek from utility companies whose equipment ignited wildfires.
- Pinterest — Shares were off more than 3% after the company on Friday revealed that CFO Julia Brau Donnelly will leave at the end of October.
- GameStop — The video game retailer jumped 4% after it reported preliminary second-quarter financial results.
- Deere — The tractor builder rose 1% after Baird upgraded the stock to outperform from neutral.
