The House version of the bill would, among other things, prohibit dual trading by a floor broker in any futures market with a daily average volume of 7,000 contracts.

So far as Federal regulators are concerned, even tipping off someone that a big order is coming may be a violation of rules prohibiting prearranged trading.

That is why many fund groups have policies saying they try to prohibit or restrict such short-term trading.

Article 125, Mr. Stevens said, prohibited manipulative trading or bogus trading activity.

Those shares are not subject to the Big Board's Rule 390, which prohibits trading of some stocks away from the exchange.

Most shares issued to creditors carry restrictions prohibiting trading.

But prohibiting trading in the initial weeks of a fund's existence is an increasingly popular strategy, as underwriters of closed-end funds seek to discourage fickle investors.

So it prohibited frequent trading in them, too.

The Conference and the action plan now under review have not managed to establish a binding international legal instrument that prohibits illegal trading.

Laws prohibiting trading on Sunday in Britain go back centuries.