The volatility caused by the fears attracts hedge funds and other investors to speculate heavily.

But in recent weeks, the value of Guidant's stock has fluctuated sharply as investors have speculated on whether the deal's price will be revised.

Some investors have speculated that Janus's weak performance, and the low price of its stock, could ultimately make it a takeover target.

Some investors speculate the Central Banks' reserve may have dwindled even further in recent days.

'Stagging' is the process by which investors speculate on new issues.

Last fall Conrail's stock began to move up, and it was volatile as some investors speculated on the possibility of a takeover.

With these options covering a basket of stocks, they allow investors to speculate on the direction of the overall market.

Wishful investors had speculated that Hutchison might buy them.

It is important to avoid either the state or the investors speculating in social dumping.

One large investor speculated that it was no coincidence that the road show began today.