Spain's Coba Asset Management has doubled its stake in Teekay Corp in less than two months, bringing the financial firm's stake above 10%, and has splashed out on a significant slice of Teekay LNG.

The Madrid-based outfit told the US Securities & Exchange Commission that it controls 8.68 million shares in Teekay Corp, the New York-listed parent of the Teekay tanker, LNG carrier and offshore vessel group.