They said the government acted because of fears that the crisis would cause a run on the banks.
"When a run on the banks was starting, there was not much they could do." said a banking expert.
"Day trading" is a new expression about a system that lets investors trade directly on an electronic market system.
The system is known as NASDAQ, short for the National Association of Securities Dealers Automated Quotation.
It was the first completely computerized stock market.
It sells stocks of companies not listed on any stock exchange.
Many high technology companies are listed on it.
Day trading companies provide a desk and a computer system to an investor who wants to trade.
Individuals must provide fifty thousand dollars or more to the trading company to pay for the stocks they buy.
