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

TASER International, Inc. (symbol: TASR) was one of the worst losers of the
trading day today (2016-08-31), losing -7.92%. The number of shares that
changed hands was 2,863,000, or about 3 times the average daily volume in
the stock.
The closing price was $27.08, amounting to a market cap of $1,410,000,000,
about -10.18% off the highest price in the last 12 months. The stock has
been trading at a range between $13.56 and $30.15.
TASR is in the Ordnance And Accessories industry, part of the Capital Goods
sector.
Looking at its valuation, the stock is now trading at 108.32 times earnings.