torontolisted stocks were slightly lower at midday wednesday with most sectors weighing on indexes in the session canadas health tech tech services and materials were the main laggards while utilities distribution services and energy were among the few sectors in the green iamgold corp shares tumbled after it said it will likely need new money to continue developing its costlierthanpreviouslyestimated gold project northeastern ontario canadas sptsx composite index fell by 048 to 2080479 and the bluechip sptsx 60 was down 051 at 126032 iamgold corp shares fell by over 30 to c252 after it warned that it estimates the remaining costs at the cote gold projectin which it has a 6475 interestto be between 12 billion and 13 billion and that the need for additional liquidity represent significant near and midterm challenges previous estimates were for its costs to be between 710 million to 760 million barrick gold corp shares rose 1 to c2909 after the canadian miner reported that profit and revenue didnt fall as much as expected and raised its dividend to include a performance component shares in waste connections inc fell 32 to c16655 after the companys firstquarter earnings missed expectations