by Marc Lichtenfeld, Advisory Panelist Editor’s Note: On August 15, we’ll be expanding our expert list to include Karim Rahemtulla, Lee Lowell and healthcare and biotech expert Marc Lichtenfeld. They’ll be joining our current experts in providing you the best investing ideas and investment education every day. Recently, Marc showed his readers how he locks in [...] (VNDA) Partial Profit Taking: What To Do When You’re Sitting On Explosive Gains