$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 (2016-07-18), losing -5.0%. The number of shares that
changed hands was 57,502,428, or about 4 times the average daily volume in
the stock.
The closing price was $4.75, amounting to a market cap of $18,870,000,000,
about -10.21% off the highest price in the last 12 months. The stock has
been trading at a range between $2.18 and $5.29.
S is in the Telecommunications Equipment industry, part of the Public
Utilities sector. It first went public in 2013.