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

PEPCO Holdings, Inc Common Stoc (symbol: POM) was one of the worst losers
of the trading day today (2015-08-25), losing -16.47%. The number of shares
that changed hands was 26,447,198, or about 20 times the average daily
volume in the stock.
The closing price was $22.51, amounting to a market cap of $5,710,000,000,
about -18.59% off the highest price in the last 12 months. The stock has
been trading at a range between $21.61 and $27.65.
POM is in the Power Generation industry, part of the Public Utilities
sector.
Looking at its valuation, the stock is now trading at 25.87 times earnings.