(Adds portfolio manager comment, updates prices to close)
* TSX ends down 30.98 points, or 0.2 percent, to 15,171.39.
* Half of the TSX's 10 main groups move higher
* Advancers and decliners evenly matched
By Alastair Sharp
TORONTO, July 26 (Reuters) - Canada's main stock index slipped on Wednesday, as financial stocks fell after the U.S. Federal Reserve held its interest rates steady and as investors pulled back from Canadian National Railway and grocer Loblaw Cos Ltd after their earnings.
The country's heavyweight banks and its largest insurers lost ground in afternoon trade, with the group ending down 0.6 percent. In addition to holding rates steady, the Fed said it expected to start winding down its massive holdings of bonds "relatively soon, which weighed on yields. country's energy sector, whose companies sell their output in U.S. dollars but incur most of their costs in the Canadian currency, also pared gains late in the day as the loonie hit a two-year high against a retreating greenback, offsetting the benefit of higher crude prices.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE closed down 30.98 points, or 0.2 percent, at 15,171.39.
Canadian National Railway Co CNR.TO fell 2.4 percent to C$99.00 despite reporting profit and revenue that beat expectations after the closing bell on Tuesday. smaller rival, Canadian Pacific Railway Ltd CP.TO , also dipped, falling 1.3 percent to C$196.31.
Grocery chain operator Loblaw Cos Ltd L.TO fell 3.8 percent to C$68.80 after barely beating profit expectations, while electronics manufacturer Celestica Inc CLS.TO lost 5.7 percent to C$15.84 after its earnings missed forecasts. Teich, a portfolio manager at Avenue Investment Management, which owns both Loblaw and Canadian National stock, said he was not overly concerned by the moves in either stock. He attributed the CN pullback to profit-taking and pointed to signs of operational improvements at Loblaws.
The materials group, which includes precious and base metals miners and fertilizer companies, added 0.3 percent, while the industrials group declined 0.9 percent.
Half of the index's 10 main groups ended in positive territory, with advancers and decliners evenly matched overall.