Without even looking deeply into the financials of UPS I would say its easy to see that they haven't undergone any new major expansion or operations rebuidling. Unless a blue chip company screws up, gets involved in a scandal or otherwise shows major promise for increased market share then their stock will likely move slowly.

UPS net income increased 10% last year and 15% the year before that. That is definitely healthy, but I wouldn't call it strong growth given the nature of their sector

Fedex for example had 28% increase in net income last year and 68% the year before that.