TORONTO, Jan 19 (Reuters) - Toronto's main stock index unwound the previous session's gains on Wednesday, weighed down by soft commodity shares and hit by unexpectedly weak Canadian and U.S. economic data and soft Goldman Sachs (GS.N) results.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE dropped 120.16 points, or 0.89 percent, to unofficially close at 13,439.04.
Nine of 10 main sectors were lower, with the heavily weighted energy and materials groups both down more than 1 percent. Hefty financials lost 0.53 percent. (Reporting by Ka Yan Ng; editing by Peter Galloway)