No pain, no gain, right? In the zerosum game of healthcare that's what's happening these days. As businesses, especially small firms, and their workers reel from eye-popping increases in the cost of health insurance, investors in health insurance stocks are dancing a jig. That's because higher insurance rates now being charged are outpacing medical care costs.
Health insurance shares have taken off lately as one insurer after another posted better-than-expected first-quarter earnings. Leading the pack has been UnitedHealth Group. The Minneapolis-based company saw profi