Aetna To Buy Genworth's Medicare-Supplement Unit For $290M

--Aetna sees rising demand for Medicare supplemental insurance as Baby Boomers retire

--Genworth business to add 145,000 members to Aetna's rolls

--Genworth to focus on long-term care, wealth management

Aetna Inc. (AET) agreed to acquire a Medicare supplemental-insurance business from Genworth Financial Inc. (GNW) for $290 million, the latest expansion by a health insurer into the growing market for senior-citizen health plans.

Aetna, based in Hartford, Conn., said the acquisition would expand its footprint in the Medicare Supplemental business, which is expected ...