Infinity Natural Resources (INR) reported Q2 earnings late Monday of $0.88 per diluted share, down from $1.18 a year earlier.
Analysts polled by FactSet expected $0.95.
Revenue in the three months ended June 30 rose to $171 million from $74.5 million a year earlier.
Analysts projected $163 million.
The company's shares rose 1.3% in after-hours trading.