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

Telefonica Brasil, S.A. ADS (symbol: VIV) was one of the worst losers of
the trading day today (2016-10-10), losing -6.21%. The number of shares
that changed hands was 6,910,762, or about 4 times the average daily volume
in the stock.
The closing price was $13.59, amounting to a market cap of $22,950,000,000,
about -13.38% off the highest price in the last 12 months. The stock has
been trading at a range between $7.72 and $15.69.
VIV is in the Telecommunications Equipment industry, part of the Public
Utilities sector.
Looking at its valuation, the stock is now trading at 19.28 times earnings.