$ATV is one of biggest winner #stocks today. read more:

Acorn International, Inc. (symbol: ATV) was one of the biggest winners of
the trading day today (2015-12-01), gaining 677.49%. The number of shares
that changed hands was 5,098,717, or about 423.0 times the average daily
volume in the stock.
The closing price was $19.2, amounting to a market cap of $531,510,000,
about -7.91% off the highest price in the last 12 months. The stock has
been trading at a range between $0.47 and $20.85.
ATV is in the Other Specialty Stores industry, part of the Consumer
Services sector. It first went public in 2007.