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

Pearson, Plc Common Stock (symbol: PSO) was one of the worst losers of the
trading day today (2016-07-29), losing -8.53%. The number of shares that
changed hands was 875,518, or about 2 times the average daily volume in the
stock.
The closing price was $11.69, amounting to a market cap of $9,520,000,000,
about -37.79% off the highest price in the last 12 months. The stock has
been trading at a range between $9.18 and $18.79.
PSO is in the Books industry, part of the Consumer Services sector.
Looking at its valuation, the stock is now trading at 8.8 times earnings.