Check out which companies are making headlines before the bell:

Best Buy (BBY) — The electronics retailer earned 57 cents per share for the second quarter, 14 cents a share above estimates. Revenue also beat forecasts. U.S. comparable-store sales rose 0.8 percent, compared to the 0.4 percent drop expected by analysts surveyed by Thomson Reuters.

J.M. Smucker (SJM) — The food producer reported adjusted quarterly profit of $1.86 per share, beating estimates of $1.74 a share. Revenue missed estimates, as demand for some of Smucker's pet food products fell, but the company benefited from cost reductions.

Monsanto (MON) — Talks with Germany's Bayer about an improved takeover bid for the chemical maker are going well, according to a Bloomberg report.

Medtronic (MDT) — Citi began coverage of the medical device maker with a "buy" rating, citing upbeat physician surveys as well as key partnerships struck by the company.

Panera Bread (PNRA), Sonic (SONC), Dave & Buster's (PLAY), Darden Restaurants (DRI) — Canaccord Genuity issued a generally cautious report on the restaurant industry, but rated these four companies a "buy" based on same-store sales trends, potential for market share gains, attractiveness to millennials, and reasonable valuations, among other factors.

Volkswagen (XETRA:VOW3-DE) — Volkswagen settled a dispute with two key parts suppliers and said affected plants would gradually resume production as parts are delivered.

Toll Brothers (TOL) — The luxury home builder matched estimates with quarterly profit of 61 cents per share. Revenue exceeded forecasts. The company saw both home sales and home prices increase from a year earlier.

Square (SQ) — Square was upgraded to "buy" from "hold" at Stifel Nicolaus, with the firm pointing to both valuation and the mobile payment company's progress in developing its payment platform.

Tableau Software (DATA) — Tableau appointed former Amazon.com (AMZN) executive Adam Selipsky as its new chief executive officer. Tableau co-founder Christian Chabot, who had been CEO, will remain as chairman of the business software maker's board.

Amazon.com (AMZN) — Amazon is working on a new music subscription service that would cost about $5 per month, according to Recode. The service would only work on its proprietary Echo hardware.

Mylan (MYL) — The drugmaker is coming under fire for sharply increasing the price of its EpiPen devices used by people to treat severe allergic reactions. Senate Judiciary Committee Chairman Chuck Grassley has written to Mylan CEO Heather Bresch asking for an explanation, and committee member Sen. Amy Klobuchar urged the Federal Trade Commission to investigate the price hikes.

MetLife (MET) — The insurer is getting support from state insurance regulators in its court battle to have its "SIFI" designation removed. Its designation as a systemically important financial institution subjects it to enhanced federal oversight, but the National Association of Insurance Commissioners — made up of state regulators — has maintained for several years that state oversight of MetLife is sufficient.

Apple (AAPL) — Apple spoke with ride-sharing service Lyft about a potential operational alliance, according to the New York Post. But the talks were reportedly not part of Lyft's investigation of possible strategic alternatives, such as a sale.

Questions? Comments? Email us at marketinsider@cnbc.com