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

Pampa Energia S.A. Pampa Energi (symbol: PAM) was one of the worst losers
of the trading day today (2015-11-23), losing -17.39%. The number of shares
that changed hands was 1,212,454, or about 7 times the average daily volume
in the stock.
The closing price was $21.66, amounting to a market cap of $1,140,000,000,
about -19.39% off the highest price in the last 12 months. The stock has
been trading at a range between $8.8 and $26.87.
PAM is in the Electric Utilities: Central industry, part of the Public
Utilities sector.
Looking at its valuation, the stock is now trading at 8.02 times earnings.