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

Natus Medical Incorporated (symbol: BABY) was one of the worst losers of
the trading day today (2016-12-16), losing -7.56%. The number of shares
that changed hands was 2,856,044, or about 7 times the average daily volume
in the stock.
The closing price was $34.85, amounting to a market cap of $1,130,000,000,
about -31.47% off the highest price in the last 12 months. The stock has
been trading at a range between $29.54 and $50.85.
BABY is in the Biotechnology: Electromedical & Electrotherapeutic Apparatus
industry, part of the Health Care sector. It first went public in 2001.
Looking at its valuation, the stock is now trading at 28.33 times earnings.