Non-PRO English to French Bus/Financial Finance (general)

Our decision not to chase these companies was justified in the second half of the period when steps taken by the Fed to normalise interest rate policy in December started to take some of the froth out of these areas.

Je ne suis pas certain de la signification de "take some of the froth out". Je pense que cela signifier « écumer » ou bien dans ce contexte, « limiter les rendements ».

D'autres idées ?

Merci !