U.S. equities traded slightly higher on Wednesday with the three benchmark indexes all trading in the green.

Investors were focused on a major deal in the healthcare sector. Shares of health insurer UnitedHealth Group Inc. (UNH - Get Report) rose slightly after the company announced that it reached a deal to purchase a physician group from kidney dialysis firm DaVita Inc. (DVA - Get Report) . The deal is valued and $4.9 billion and will be paid in cash.

"Combining DaVita Medical Group and Optum advances our shared goal of supporting physicians in delivering exceptional patient care in innovative and efficient ways," said Larry Renfro, chief executive of UnitedHealth's Optum unit.

Meanwhile, Home Depot Inc. (HD - Get Report) stock slipped even though the home-improvement retailer reaffirmed its full-year sales and earnings guidance and outlined a $15 billion share buyback plan.

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This article was written by a staff member of TheStreet.