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

Youku Tudou Inc. American Depos (symbol: YOKU) was one of the worst losers
of the trading day today (2015-08-20), losing -11.04%. The number of shares
that changed hands was 5,693,200, or about 2 times the average daily volume
in the stock.
The closing price was $15.79, amounting to a market cap of $3,060,000,000,
about -49.87% off the highest price in the last 12 months. The stock has
been trading at a range between $11.85 and $31.5.
YOKU is in the Radio And Television Broadcasting And Communications
Equipment industry, part of the Technology sector. It first went public in
2010.