This segment is from Thursday's edition of Digging for Value, in which sector analysts Joel South and Taylor Muckerman discuss energy and materials news with host Alison Southwick. The twice-weekly show can be viewed on Tuesdays and Thursdays. It can also be found on Twitter, along with our extended coverage of the energy and materials sectors: @TMFEnergy.

It's hard to believe markets are efficient when you see irrational behavior around earnings season. This week, both Chesapeake Energy (NYSE:CHK) and SandRidge Energy (NYSE:SD) announced spectacular quarterly results, again confirming the tremendous headway new management is making with both firms, but the market punished both companies, as they each lost 10% of their market capitalization. Is there a weakness in both Chesapeake and SandRidge's business, or does this sell-off present another buying opportunity? See more in the following video.

Joel South owns shares of SandRidge Energy. Alison Southwick, Taylor Muckerman, and The Motley Fool have no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.