The Holliday Fenoglio Fowler investment sales team has seen a big uptick in activity with five major transactions closed since the end of April, and another one under contract. The team, led by Jeff Stone and Andrew Levy, has closed on a total of 2.5 million square feet involving eight separate projects. Most recently, sales of the Motorola Cellular Building at 5555 Beach St. in Fort Worth, and Northpark I & II in Dallas closed as scheduled.