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

Credit Acceptance Corporation (symbol: CACC) was one of the worst losers of
the trading day today (2015-12-29), losing -4.66%. The number of shares
that changed hands was 170,462, or about 1 times the average daily volume
in the stock.
The closing price was $208.83, amounting to a market cap of $4,370,000,000,
about -24.88% off the highest price in the last 12 months. The stock has
been trading at a range between $129.82 and $277.98.
CACC is in the Finance: Consumer Services industry, part of the Finance
sector. It first went public in 1992.
Looking at its valuation, the stock is now trading at 14.95 times earnings.