It was a mixed close for the markets with the Dow falling 54 points to 18,868 as crude oil prices retreated. Nasdaq gained 18 points to 5,294.

On the upside

Globus Maritime (Nasdaq: GLBS) and Global Ship Lease (NYSE: GSL) joined the shipping stock rally.

Shares of China Natural Resources (Nasdaq: CHNR) more than doubled on no news.

Voltari (Nasdaq: VLTC) stock surged on no news.

On the downside

Exact Sciences (Nasdaq: EXAS) president and chief executive Kevin T. Conroy sold 600,000 shares of company stock.

Citron Research alleged that Mallinckrodt (NYSE: MNK) overstated Acthar CMS sales.

Iceberg Research said that the stock pricer of Tutor Perini (NYSE: TPC) could plunge up to 55%.

In the broad market, advancing issues outpaced decliners by a margin of 10 to 9 on the NYSE and by nearly 10 to 9 on Nasdaq. The broader S&P 500 lost 3 points to 2,176. Bitcoin surged $25 to $733.