Does it mean "take part in trading"?
"Optimism is quite high but everyone is a little bit nervous about when we should come in, what's the president going to do, what changes are going to come through, so they've been holding back, so loan growth is going to be a big focus of these numbers," he added.
Source: http://www.cnbc.com/2017/04/18/us-banks-are-now-truly-turning-the-page-asset-manager-says.html