$RTK is one of biggest losers #stocks today. read more:

Rentech, Inc. (symbol: RTK) was one of the worst losers of the trading day
today (2015-08-20), losing -14.58%. The number of shares that changed hands
was 638,019, or about 4 times the average daily volume in the stock.
The closing price was $6.15, amounting to a market cap of $1,410,000,000,
about -73.14% off the highest price in the last 12 months. The stock has
been trading at a range between $0.65 and $22.9.
RTK is in the Agricultural Chemicals industry, part of the Basic Industries
sector. It first went public in 1991.