Check out which companies are making headlines before the bell:
Best Buy — Best Buy reported adjusted quarterly profit of 44 cents per share, 9 cents a share above estimates. Revenue also beat forecasts. However, its current-quarter forecast is light of Street forecasts. Separately, Best Buy CFO Sharon McCollam is stepping down June 14, and will be replaced by Chief Strategic Growth Officer Corie Barry.
Microsoft — Cowen upgraded Microsoft to "outperform" from "market perform," saying the market has overreacted to Microsoft's most recent quarterly earnings and that key metrics like Office suite revenue and cloud-based sales are poised to increase.
AutoZone — The autoparts retailer earned an adjusted $10.77 per share for its third quarter, 15 cents a share below estimates. Revenue also fell short. The company said the sales shortfall was primarily the result of weather-related factors in certain areas of the country.
Home Depot — The home improvement retailer said it recorded $2 million in pre-tax expenses related to its 2014 data breach during the first quarter. It also said it has not set aside an accrual for costs related to the breach, since it is not able to estimate a range related to pending matters.
Toll Brothers — Toll Brothers reported adjusted quarterly profit of 51 cents per share, 5 cents a share above estimates. The luxury home builder's revenue also topped Street forecasts, and it saw improvements in sales, profit margins, and backlog over a year earlier.
Energizer Holdings — Energizer bought automotive fragrance products maker Handstands for $340 million in cash.
Archer Daniels Midland — BMO Capital Markets upgraded the grain processor's stock to "outperform" from "market perform," saying the company's fundamentals will begin to vastly improve in the second half of this year.
ConAgra Foods — The food company's Chief Financial Officer John Gehring will retire after 14 years, but will remain on the job until a successor has been named.
Sony — Sony is predicting a 2 percent rise in annual profit for the fiscal year ending March 31, with results impacted by a partial production halt at an image sensor plant. The halt was instituted so the company could assess earthquake damage at the plant.
Facebook — Facebook has changed some procedures related to its "Trending Topics" section, following a report that alleged suppression of conservative news. Facebook did say an internal probe showed no evidence of political bias in the selection of stories for that section.
Deere — BMO upgraded the heavy equipment maker to "outperform" from "market perform," saying Deere is under-owned and has attractive long-term prospects. It notes significant underperformance by the stock since 2011 and acknowledges that the call may be on the early side.
Coca-Cola — Production of Coke has been halted in Venezuela due to a lack of sugar in that country. Production of diet drinks containing no sugar are continuing normally, according to a Coca-Cola spokeswoman.
Toyota — The automaker is adding nearly 1.6 million vehicles to recalls related to possibly defective Takata air bag inflators. The latest recall involves models built between 2006 and 2011, although it does not include all models built in that time period.
JPMorgan Chase — The company's private bank unit is cutting nearly 100 workers, according to The Wall Street Journal. The division still has about 12,000 people and is continuing to actively hire even as it cuts out underperformers.
Square — Square was upgraded to "buy" from "neutral" at BTIG, which cites both valuation and the potential for short-squeeze related gains. BTIG has a price target of $12 per share for the mobile payments company, compared to the Monday close of $9.46 per share.
Johnson Controls — The stock was upgraded to "outperform" from "neutral" at Credit Suisse, which said the automotive components maker would benefit from both its spin-off of its Adient automotive seating business and its upcoming combination with Tyco International . Credit Suisse increased its price target for the stock to $50 from $45 per share.
General Mills — General Mills was downgraded to "sell" from "neutral" at Goldman Sachs, which doesn't see the food maker as a likely acquisition target any time soon.
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