21.   He was clearly selling himself short.

22.   He said the student was selling himself short.

23.   He said the number of shares sold short has risen since mid-August.

24.   If an investor is unable to borrow a stock, he is not supposed to be able to sell it short.

25.   If traders decide a team is going to lose, they can place an order to sell it short.

26.   In the meantime, these traders are exiting their troubled short positions, which are sizable, buying long-term Treasuries to cover those they had sold short.

27.   Increasingly, stocks are also sold short as part of complex strategies that involve several trades.

28.   In the last decade, Wall Street has scared up ghost stock for stock that cannot be delivered, because it was sold short without being acquired for delivery.

29.   Like stocks, exchange-traded funds can be bought or sold all day long, bought on margin and sold short.

30.   Like stocks, they can be traded throughout the day, bought on margin or with limit orders, or sold short.