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

Sprint Corporation Common Stock (symbol: S) was one of the worst losers of
the trading day today (2015-07-27), losing -9.88%. The number of shares
that changed hands was 49,361,939, or about 3 times the average daily
volume in the stock.
The closing price was $3.1, amounting to a market cap of $12,290,000,000,
about -62.2% off the highest price in the last 12 months. The stock has
been trading at a range between $3.1 and $8.2.
S is in the Telecommunications Equipment industry, part of the Public
Utilities sector. It first went public in 2013.