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

Matador Resources Company Commo (symbol: MTDR) was one of the worst losers
of the trading day today (2016-06-30), losing -6.47%. The number of shares
that changed hands was 3,336,234, or about 2 times the average daily volume
in the stock.
The closing price was $19.8, amounting to a market cap of $1,850,000,000,
about -29.91% off the highest price in the last 12 months. The stock has
been trading at a range between $11.13 and $28.25.
MTDR is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 2012.