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

Alarm.com Holdings, Inc. (symbol: ALRM) was one of the worst losers of the
trading day today (2016-08-18), losing -5.92%. The number of shares that
changed hands was 935,509, or about 4 times the average daily volume in the
stock.
The closing price was $28.14, amounting to a market cap of $1,280,000,000,
about -15.06% off the highest price in the last 12 months. The stock has
been trading at a range between $10.26 and $33.13.
ALRM is in the n/a industry, part of the n/a sector.
Looking at its valuation, the stock is now trading at 119.24 times earnings.