Amazon.com, Inc. (AMZN Quick QuoteAMZN - Free Report) ,Although diversified, its core business is primarily an online retailer of consumer products and subscriptions in North America and internationally. This Zacks #1, Strong Buy, benefits from an expanding AWS enterprise customer base and increasing number of paid Prime members. It generates a strong cash flow. The company’s stock has posted solid gains, outperforming its industry on a year-to-date basis.

HollyFrontier Corporation ,is engaged in refining petroleum. Its Q1 earnings report showed this company significantly beat Zacks consensus and revenue estimates. This was driven by expanding margins, lower operating expenses and higher throughput. In fact, estimates on it have been rising consistently over the past 30, 60 and 90 day intervals. A Big uptick in U.S. production, that began last year, has been a huge tailwind for the company. It also pays a solid dividend.

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Last year, it generated $8 billion in global revenues. By 2020, it's predicted to blast through the roof to $47 billion. Famed investor Mark Cuban says it will produce "the world's first trillionaires," but that should still leave plenty of money for regular investors who make the right trades early.

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