Pure Trading Weekly Market Summary September 21 2007 Closing Numbers

Stock                           	Symbol	Vol(00s)	        High	     Low	   Close	   Change	           52W Hi	          52W Lo
ABER DIAMOND CORP               	ABZ   	      81	      39.230	  38.740	  39.060	   +0.050	           39.230	          38.350
FAIRFAX FINANCIAL HOLDINGS LTD., SV	FFH   	      76	     260.670	 253.640	   0.000	 -247.890	          260.670	         240.990
iSharesTM CDN Energy Sector Index Fund	XEG   	     498	      88.320	  86.130	  87.200	   -0.830	           88.570	          86.130

Stock                           	Symbol	     Bid	     Ask	           52W Hi	          52W Lo

	              Trades:	            174
	        Total Volume:	         65,500
	         Total Value:	     $6,622,170
	  Avg Volume per Day:	         13,100
	   Avg Value per Day:	     $1,324,434
	 Avg Trades per Day*:	           0.02
	 Avg Price per Share:	        $101.10
	 Avg Value per Trade:	        $38,058

Note 1:  z - Full Volume.
Note 2:  Change calculated using unadjusted closing prices.
Note 3:  Avg Trades/day is per symbol.