After meeting with management, Deutsche Bank analyst Amit Mehrotra said he sees "significant upside" in shares of Star Bulk Carriers. The stock has potential to quadruple based on an assessment of incremental cash flows and management's capital allocation priorities, Mehrotra told investors earlier in a research note. He keeps a Buy rating on the shares with a $17 price target. Star Bulk was the first company to announce significant investments in exhaust gas cleaning systems, which will allow it to burn lower cost heavy fuel oil and capture the spread between high and low sulphur fuel, Mehrotra wrote. He believes the company's earnings power could top $900M in 2020. This would "conservatively translate" to an equity value of over $50, Mehrotra contends. Star Bulk Carriers in midday trading is up 6%, or 81c, to $14.46.