Last year set records for investment and M&A activity in the seniors housing sector, and a large joint venture portfolio acquisition by Welltower Inc. and the Canada Pension Plan Investment Board (CPPIB) suggests that deal activity shows no sign of letting up in 2016. The Welltower/CPPIB JV this week closed the acquisition of a 97.5% interest in a six-property seniors housing portfolio in Florida known as Aston Gardens.