External factors have too much impact.
Most citicorp employees were in Aetna managed health care plans. When the news got out, the stock took a dive. Granted, Citicorp is a big company, but it shows how dependent health care companies can be on single contracts. As someone who has experience with many different hospitals, she considered the Columbia hospital to be one of the most inept, poorly run facilities she'd ever experienced. Some of the things she described to me sounded like they came straight out of a horror story.