Mammoth Energy Services' air rental business is gaining traction and should benefit from increased infrastructure projects. It is a low-quality company, but with about $2.76 of cash per share against a $2.80 price, it can buy back a good chunk of its shares. x.com 

Mammoth Energy Services trades at a negative enterprise value, with $2.76 a share in cash against a $2.80 share price and possibly $20M more in cash from Puerto Rico at any time. It just issued decent guidance and may turn the corner on profitability, making the risk/reward attractive in this oil market. x.com