"Why try and trade a market now when there may well be a fundamental reason to take action on Friday?"

An explanation of the basis or fundamental reasons for something.

"These are fundamental reasons for our rejection of military action."

"But now people are feeling more comfortable, and getting involved in the market for fundamental reasons."

And there are good fundamental reasons for playing it safe.

But the argument is wrong for a more fundamental reason.

For the most part, we share the fundamental reason why the Convention was first established.

I cannot see any fundamental reason not to let them in on 1 January.

The fundamental reason has to do with the debate which we had earlier today.

"You can see no fundamental reason why it couldn't be built?"