Cobas Asset Management has taken a stake in Diamond S Shipping after a tough year for the Connecticut-based company.

The Spanish investor disclosed a 2.1m-share stake in Diamond S — good for 5.2% of the company — in US Securities and Exchange Commission filings on Wednesday.

The tanker owner's New York Stock Exchange-listed shares were up $0.46 to $7.07 in midday trading on 3 February.