The beginning of June could be telling for managed-care stocks, as many insurers close their books on May results and make presentations at a major healthcare industry investor conference, analysts say. Valuations for the group "should improve as the market becomes more comfortable that fundamentals are not deteriorating," according to Oppenheimer & Co. Managed-care companies should have a good idea of how the second quarter looks by the time of the Goldman Sachs healtcare conference, said Oppenheimer representatives.