The US imposed the tariffs on Canada and Mexico in June. Although Canada and Mexico agreed a renewed continental trade deal last week, the measures remain.
The company's IPO of 20 million shares was priced at $17 per share on Wednesday, below its target range of $18 to $20 per share. The IPO raised $340 million.
The East African nation's deposits are often in remote regions where the country's poorest live, but experts say few have reaped the rewards from mining.
Shareholders of Barrick and Randgold will vote on Nov. 5 on an all-stock transaction that will create a company with operations in Africa, Australia, North and South America, Saudi Arabia and Papua New Guinea.
