A new study shows REALTORS are largely optimistic about their local markets, still struggle with low inventory challenges, and 60 percent of them are doing 100 percent of the business. According to a new REALTOR Productivity Study of Multiple Listing Service activity released by leading consulting firm WAV Group and sponsored by Realtors Property Resource , 29 percent of Realtors say they are "very optimistic" about their local markets and 71 percent say they are "cautiously optimistic"; none say they are "not at all optimistic" about their local markets.