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

SLM Corporation (symbol: JSM) was one of the worst losers of the trading
day today (2015-09-30), losing -5.23%. The number of shares that changed
hands was 152,369, or about 6 times the average daily volume in the stock.
The closing price was $17.23, amounting to a market cap of $6,440,000,000,
about -25.38% off the highest price in the last 12 months. The stock has
been trading at a range between $16.8 and $23.09.
JSM is in the Finance: Consumer Services industry, part of the Finance
sector.
Looking at its valuation, the stock is now trading at 6.38 times earnings.