Consumers with substantial assets seem to be more interested in adding to those assets.

When researchers at Phoenix Marketing International Inc., Rhinebeck, N.Y., surveyed 1,100 “mass affluent” consumers in February, they found that about 42% were planning to add to their portfolios in the following 3 months.

The total was up from 38% in February 2005.

The participating consumers reported having at least $250,000 in investable household assets and at least $150,000 in annual household income.

More than 60% of the participants said they would add to retirement accounts and deposit accounts. Fewer than 15% said they would buy more bonds or invest more in real estate or alternative investment vehicles.