South Bow (SOBO) reported Q1 normalized net income late Thursday of $0.47 per diluted share, down from $0.55 a year earlier.
Analysts polled by FactSet expected $0.44.
Revenue in the three months ended March 31 fell to $498 million from $544 million a year earlier.
Two analysts surveyed by FactSet expected $521.6 million.
South Bow maintained its quarterly dividend of $0.50 a share, payable July 15 to investors of record June 30.
Shares of the company rose 1.2% in after-hours activity.