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

HollyFrontier Corporation Commo (symbol: HFC) was one of the worst losers
of the trading day today (2016-06-13), losing -7.58%. The number of shares
that changed hands was 4,998,329, or about 2 times the average daily volume
in the stock.
The closing price was $24.98, amounting to a market cap of $4,390,000,000,
about -54.36% off the highest price in the last 12 months. The stock has
been trading at a range between $24.95 and $54.73.
HFC is in the Integrated oil Companies industry, part of the Energy sector.
Looking at its valuation, the stock is now trading at 8.66 times earnings.