Check out the companies making headlines in midday trading. Ulta Beauty – Ulta Beauty shares fell 3% after Jefferies downgraded the beauty retailer to a hold from a buy rating, citing rising competition. Netflix — The streaming giant sank more than 7% after saying it will stop reporting subscriber growth in its quarterly earnings starting next year. Shares were headed for their worst day since July. Shopify — Shares advanced 1.8% after Morgan Stanley upgraded the Canada-based e-commerce company to overweight, citing confidence in the company’s growth potential, particularly that it will expand its international traction, as well as its operating leverage upside. SLB — The energy stock fell nearly 2% despite a first-quarter report that largely met first quarter expectations. SLB reported $8.71 billion in revenue, just above the $8.69 billion projected by analysts, according to LSEG. Adjusted of 75 cents per share matched expectations. However, SLB did report that revenue in North America was down year over year. American Express — Shares popped 4.5% after the financial services company reported diluted earnings per share of $3.33 for its first-quarter, topping the $2.95 expected from analysts polled by FactSet. Revenue was $15.8 billion versus the consensus estimate of $15.79 billion. American Express said U.S. consumer spending increased 8% from a year earlier. Super Micro Computer — The server and data storage company slipped more than 17%. Earlier in the day, Super Micro Computer said fiscal third-quarter results will be out April 30, but offered no guidance ahead of the report. Ibotta — Shares of the technology company fell nearly 6% a day after Ibotta’s initial public offering. The stock is still roughly 11% above where it priced its IPO. — CNBC’s Samantha Subin, Michelle Fox, Pia Singh and Jesse Pound contributed reporting