Check out the companies making headlines in midday trading: Walmart — The big-box retailer saw shares jump nearly 5% to hit a record after the retail giant topped fiscal third-quarter earnings and revenue expectations. The retailer also hiked its outlook again as it saw growth in e-commerce and improvements...

Check out the companies making headlines in premarket trading. Walmart – The retail giant gained about 4% after posting fiscal third-quarter results that surpassed Wall Street's estimates. Walmart also boosted its guidance as customers buy more than groceries. Lowe's — The home improvement retailer's shares fell 1.7%. Although the...