TORONTO, Feb 26 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Falls 19.91 points, or 0.11 percent, to 18,203.63 at open.TORONTO, Feb 26 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Unofficially closes down 152.92 points, or 0.84 percent, at 18,070.62.