Whole Foods Market

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A sign at a Whole Foods Market greets shoppers, Monday, Aug. 28, 2017, in Tampa, Fla. (AP Photo/Chris O'Meara) ** FILE **

This Friday, June 16, 2017, photo shows a Whole Foods Market in San Antonio. Whole Foods shareholders voted Wednesday, Aug. 23, 2017, to bless a $13.7 billion union with Amazon that the organic grocery chain's CEO had called "love at first sight." By buying Whole Foods, Amazon will get more than 460 stores and potentially very lucrative data about how shoppers behave offline. (AP Photo/Eric Gay)

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In this May 3, 2017, photo, customers shop at a Whole Foods Market in Upper Saint Clair, Pa. Amazon’s planned $13.7 billion acquisition of Whole Foods signals a massive bet that people will opt more for the convenience of online orders and delivery or in-store pickup, putting even more pressure on the already highly competitive industry. (AP Photo/Gene J. Puskar)

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In this May 3, 2017, photo, people stand outside a Whole Foods Market in Upper Saint Clair, Pa. Amazon’s planned $13.7 billion acquisition of Whole Foods signals a massive bet that people will opt more for the convenience of online orders and delivery or in-store pickup, putting even more pressure on the already highly competitive industry. (AP Photo/Gene J. Puskar)

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Whole Foods customer Bethany Capels, 34, of Mendenhall, Miss., loads her Whole Foods Market purchases in her car in Jackson, Miss., Friday, June 16, 2017. Amazon is buying Whole Foods Market in a deal valued at $13.7 billion, uniting the on-line giant with the grocery store chain that touts fresh organic foods. (AP Photo/Rogelio V. Solis)

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Customers drive past this Whole Foods Market store in Jackson, Miss., Friday, June 16, 2017. Amazon is buying Whole Foods Market in a deal valued at $13.7 billion, uniting the on-line giant with the grocery store chain that touts fresh organic foods. (AP Photo/Rogelio V. Solis)

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Customers drive past this Whole Foods Market store in Jackson, Miss., Friday, June 16, 2017. Amazon is buying Whole Foods Market in a deal valued at $13.7 billion, uniting the on-line giant with the grocery store chain that touts fresh organic foods. (AP Photo/Rogelio V. Solis)

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A Whole Foods Market purchase awaits placement in a car trunk, outside the Jackson, Miss., store Friday, June 16, 2017. Amazon is buying Whole Foods in a stunning move that gives it hundreds of stores across the U.S., a brand-new laboratory for radical retail experiments that could revolutionize the way people buy groceries. (AP Photo/Rogelio V. Solis)

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Shoppers enter a Whole Foods Market, Friday, June 16, 2017, in San Antonio. Amazon is buying Whole Foods in a deal valued at about $13.7 billion. (AP Photo/Eric Gay)

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A cart is seen with Whole Foods Market name, Friday, June 16, 2017, in San Antonio. Amazon is buying Whole Foods in a deal valued at about $13.7 billion. (AP Photo/Eric Gay)

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John Mackey is the CEO of Whole Foods Market, which he co-founded in 1980. Named the Ernst & Young Entrepreneur of the Year in 2003, Mackey is a strong supporter of free market economics, has strong anti-union views, and co-wrote the best-selling book Conscious Capitalism, which was released in 2013. He is one of the most influential advocates in the movement for organic food. Mackey was a student of philosophy and religion at the University of Texas at Austin and Trinity University in the 1970s, and worked at a vegetarian co-op. Mackey spent almost six years studying various topics, deciding to focus solely on his interests and not purely seek out a degree. Mackey credits his generalist approach to learning as the main reason he was able to be successful in business.

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This May 3, 2017, photo, shows a Whole Foods Market grocery store, in Upper Saint Clair, Pa. Whole Foods Market, which disrupted the supermarket business with its offerings of organic and natural foods, has been unsettled itself by the trends it helped make popular. (AP Photo/Gene J. Puskar)

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In this May 3, 2017, photo, organic bananas are displayed at a Whole Foods Market grocery store, in Upper Saint Clair, Pa. Whole Foods Market, which disrupted the supermarket business with its offerings of organic and natural foods, has been unsettled itself by the trends it helped make popular. (AP Photo/Gene J. Puskar)

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In this May 3, 2017, photo, fresh fruit is displayed in a Whole Foods Market grocery store, in Upper Saint Clair, Pa. Whole Foods Market, which disrupted the supermarket business with its offerings of organic and natural foods, has been unsettled itself by the trends it helped make popular. (AP Photo/Gene J. Puskar)

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Customers dine at the Whole Foods market cafe in the new Riverdale Park Station shopping center. The store opened April 12 after six years fraught with delays. (Julia Brouillette/The Washington Times)

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**FILE** Rick Watts, 49, protests outside a Whole Foods store in West Hollywood, Calif., on Aug. 23, 2009. The protest took place after John Mackey, the CEO of Whole Foods Market, wrote an op-ed piece for the Wall Street Journal about health care reform. (Associated Press)