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

RLI Corp. Common Stock (symbol: RLI) was one of the worst losers of the
trading day today (2016-10-20), losing -12.0%. The number of shares that
changed hands was 1,072,132, or about 9 times the average daily volume in
the stock.
The closing price was $59.85, amounting to a market cap of $2,620,000,000,
about -16.25% off the highest price in the last 12 months. The stock has
been trading at a range between $57.73 and $71.46.
RLI is in the Property-Casualty Insurers industry, part of the Finance
sector.
Looking at its valuation, the stock is now trading at 20.36 times earnings.