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

Teck Resources Ltd Ordinary Sha (symbol: TCK) was one of the worst losers
of the trading day today (2015-09-04), losing -9.54%. The number of shares
that changed hands was 5,699,965, or about 1 times the average daily volume
in the stock.
The closing price was $6.16, amounting to a market cap of $3,550,000,000,
about -72.45% off the highest price in the last 12 months. The stock has
been trading at a range between $5.32 and $22.36.
TCK is in the Mining & Quarrying of Nonmetallic Minerals (No Fuels)
industry, part of the Basic Industries sector.
Looking at its valuation, the stock is now trading at 13.69 times earnings.