The office market fundamentals continued to improve in Q4 2015, with rents rising and vacancies falling in the core areas of the top 10 markets. Absorption trends were generally positive, though leasing slowed in some markets due to low availability. Tech tenants remain an important driver of leasing activity, though corporate relocations and professional services are also contributing. Rents are below prior peaks in most markets, suggesting further potential for growth in 2016 as the US economy continues moderate expansion.