$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 (2016-09-08), losing -7.92%. The number of shares that
changed hands was 906,676, or about 2 times the average daily volume in the
stock.
The closing price was $10.58, amounting to a market cap of $8,620,000,000,
about -43.66% off the highest price in the last 12 months. The stock has
been trading at a range between $9.18 and $18.78.
PSO is in the Books industry, part of the Consumer Services sector.
Looking at its valuation, the stock is now trading at 9.59 times earnings.