The NZD is the strongest. The USD is the weakest.
Ahead of the RBNZ meeting at the NY close (5 PM) and a rate cut, the NZD is still the one. IT is the strongest currency on the day as North American traders enter for the day. On the other end of the spectrum, the USD is the weakest. Catalysts? Well, for the USD you can look at the productivity numbers from yesterday. Weak stuff and puts into question the employment gains.