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

Alere Inc. Common Stock (symbol: ALR) was one of the worst losers of the
trading day today (2016-04-20), losing -12.35%. The number of shares that
changed hands was 14,984,953, or about 6 times the average daily volume in
the stock.
The closing price was $43.36, amounting to a market cap of $3,740,000,000,
about -22.56% off the highest price in the last 12 months. The stock has
been trading at a range between $31.96 and $55.99.
ALR is in the Biotechnology: In Vitro & In Vivo Diagnostic Substances
industry, part of the Health Care sector.
Looking at its valuation, the stock is now trading at 11.46 times earnings.