…1,100 investors gathered in Chicago’s Harris Theater for the annual Invest for Kids conference to glean investment ideas from a potpourri of hedge fund managers and other gurus. The investment performance over the conference’s prior six years has been pretty good (17.5% a year versus the Standard & Poor’s 500’s annual return of 14.1%). And the audience at the charity event gets managers’ best ideas without paying hedge fund fees, all for the $1,000 price of admission.