Take a look at some of the biggest movers in the premarket:

United Parcel Service (UPS) – UPS earned $2.77 per share for the first quarter, compared to a consensus estimate of $1.72 a share. Revenue also came in above Wall Street forecasts. Results for the delivery service were driven by a more than 14% increase in volume from a year earlier, with small- and medium-sized businesses contributing significantly to that increase. The stock surged 6.9% in premarket trading.