Check out the companies making headlines in pre-market trading. Walmart — Shares of Walmart rose about 4% after the retail giant reported fiscal third-quarter results that beat Wall Street expectations. Walmart also raised its guidance as customers buy more than just groceries. Lowe’s — Shares of the home improvement retailer fell 1.7%. Although the company’s fiscal third-quarter revenue and profit exceeded expectations, sales are expected to be down year-over-year. Lowe’s forecast comparable sales to fall to 3.5% from 3%, slightly better than its previous forecast of 3.5% to 4%. Super Micro Computer – The server maker’s stock surged about 26% after announcing BDO as its new auditor. The news comes after EY resigned last month. Supermicro also provided Nasdaq with a plan on how to comply with the exchange’s rules. Symbotic – The automation technology company’s fourth-quarter revenue exceeded expectations, and its stock price soared 28.5%. Fourth-quarter revenue was $576.8 million, well above Wall Street forecasts of $470.2 million. Symbotic also provided strong revenue guidance for the current quarter. AeroVironment — Shares of AeroVironment fell 5% after the defense contractor announced it would acquire BlueHalo in an all-stock deal valued at $4.1 billion. AeroVironment said the deal would “usher in the next era of defense technology” for the company. BioNTech — Shares of the German biotech company rose 1.9% after Evercore ISI upgraded its rating to outperform. Evercore ISI said the “chaos” following President-elect Trump’s election as Secretary of Health and Human Services is a buying opportunity for investors. Shares of Nvidia, the artificial intelligence darling and market leader, were up about 1.5% in premarket trading. Nvidia will report third-quarter results on Wednesday, and investors will be paying particularly close attention to demand for the company’s Blackwell chips. —CNBC’s Sarah Min, Samantha Subin, Hakyung Kim, Sean Conlon, Brian Evans and Michelle Fox contributed reporting