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

Acadia Healthcare Company, Inc. (symbol: ACHC) was one of the worst losers
of the trading day today (2016-07-14), losing -6.26%. The number of shares
that changed hands was 4,158,215, or about 6 times the average daily volume
in the stock.
The closing price was $52.9, amounting to a market cap of $4,620,000,000,
about -38.22% off the highest price in the last 12 months. The stock has
been trading at a range between $49.77 and $85.62.
ACHC is in the Medical Specialities industry, part of the Health Care
sector.
Looking at its valuation, the stock is now trading at 31.45 times earnings.