The hedge fund, run by Harvard-educated lawyer Andrew Feldstein, now controls around 7.1% of the US-listed bulker operator.
A disclosure to the US Securities & Exchange Commission (SEC) said the fund now held 9.9m shares in Scorpio Bulkers.
BlueMountain’s stake in the shipowner is now worth around $76.2m at Scorpio Bulker’s closing share price on Friday of $7.68 per share.
So far this year Scorpio Bulkers’ shares have ranged between a 52 week low of $7.56
