Analyst Downgrades for March 18th
<div id="comtex-body"><p>Analyst Downgrades for 3/18/2010... Athenahealth (NASDAQ: <a class="ticker" href="/stock/athn#NASDAQ">ATHN</a>) downgraded to Underperform from Perform, $31 target, at Oppenheimer... Chesapeake Energy (NYSE: <a class="ticker" href="/stock/chk#NYSE">CHK</a>) downgraded to...