Stock Data
A few examples of what you can ask Wolfram|Alpha about:
Stocks
find and analyze current data about a stock
specify a stock using its ticker symbol
specify the exchange
compare several stocks
get a historical price
request a specific property of a stock
do computations with stock data
analyze a portfolio
request a trading chart
Indices
find and analyze current data about a stock market index
Mutual Funds
find and analyze current data about a mutual fund
specify a fund using its ticker symbol