Activist California investor slashes stake, sees better opportunities in 'very interesting market'
Activist shareholder follows through with last month's promise to nominate board members... again
On same day activist pipes up again, investor almost doubles stake to 11%
After recent purchases, fund now owns almost 7 percent of company
Also in our monthly roundup of news nuggets from Nashville's healthcare scene: HCA lures Emory cardiologist and Psych Solutions preps for growth spurt
Despite 135-fold share price increase since 2002, investors -- who offered to buy the company last month -- say it is undervalued