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

Tesoro Corporation Common Stock (symbol: TSO) was one of the worst losers
of the trading day today (2016-07-06), losing -5.04%. The number of shares
that changed hands was 4,164,888, or about 2 times the average daily volume
in the stock.
The closing price was $71.16, amounting to a market cap of $8,510,000,000,
about -40.54% off the highest price in the last 12 months. The stock has
been trading at a range between $67.8 and $119.67.
TSO is in the Integrated oil Companies industry, part of the Energy sector.
Looking at its valuation, the stock is now trading at 5.99 times earnings.