 Shares of Nesco Holdings Inc. rocketed 53 toward a 15-month high in premarket trading Thursday, after the provider of equipment and services to the electric utility transmission, telecommunications and rail markets announced a deal to buy Custom Truck One Source CTOS for 1.475 billion, and an 850 million equity investment from an affiliate of Platinum Equity. The Platinum investment will be in exchange for Nesco common stock priced at 5.00 a share, which is 14.9 above Wednesdays closing price of 4.35. 