market folly

Ken Griffin's hedge fund firm Citadel recently filed a 13G with the SEC regarding shares of Ultrapetrol (ULTR).

Citadel has disclosed a 4.9% ownership stake in Ultrapetrol (ULTR) with 1,550,689 shares. They've increased their position size by 185,833% over the past two months (they only owned 834 shares at the end of 2011). The SEC filing was made due to trading activity on February 15th.

In other portfolio activity, we also detailed how Citadel boosted its stake in Constant Contact (CTCT) as well.

About Ultrapetrol (ULTR)

Per Google Finance, ULTR is "an industrial shipping company serving the marine transportation needs of clients in the geographic markets. It serves the shipping markets for grain, forest products, minerals, crude oil, petroleum, and refined petroleum products, as well as the offshore oil platform supply market through its operations in three segments of the marine transportation industry: River Business, Offshore Supply Business and Ocean Business. Its River Business, with 591 barges and 30 pushboats, is an owner and operator of river barges and pushboats that transport dry bulk and liquid cargos through the Hidrovia Region of South America, a region with growing agricultural, forest and mineral related exports. Its Offshore Supply Business owns and operates vessels that provide logistical and transportation services for offshore petroleum exploration and production companies, in the North Sea and the coastal waters of Brazil. Its Ocean Business operates nine ocean-going vessels."