Here are three stocks with buy rank and strong value characteristics for investors to consider today, April 21:

Mach Natural Resources LP (MNR Quick QuoteMNR - Free Report) : This upstream oil and gas company carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 60.8% over the last 60 days.

Mach Natural has a price-to-earnings ratio (P/E) of 7.42, compared with 57.30 for the industry. The company possesses a Value Score of A.

Atlanticus Holdings Corporation (ATLC Quick QuoteATLC - Free Report) : This financial technology company carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 7.9% over the last 60 days.

Atlanticus has a price-to-earnings ratio (P/E) of 8.37, compared with 14.60 for the industry. The company possesses a Value Score of A.

Ecopetrol S.A. (EC Quick QuoteEC - Free Report) : This integrated oil and gas company carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 61.5% over the last 60 days.

Ecopetrol has a price-to-earnings ratio (P/E) of 8.05, compared with 8.70 for the industry. The company possesses a Value Score of A.

You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

Check out this week’s current list of Best Stocks to Buy Now.

Learn more about the Value score and how it is calculated here.