NASD,Total,100.00%,70.14%,18.52%,11.34%
NASD,UBS Securities,94.00%,96.73%,98.71%,69.41%
NYSE,Total,100.00%,80.07%,11.19%,8.74%
NYSE,UBS Securities,61.43%,64.11%,51.63%,49.37%
NYSE,New York Stock Exchange,35.10%,34.79%,45.42%,24.69%
AMEX,Total,100.00%,64.10%,18.52%,17.38%
AMEX,UBS Securities,82.34%,89.56%,99.23%,37.70%
AMEX,Pershing,9.40%,10.00%,0.00%,17.21%
AMEX,ECUT,5.56%,0.00%,0.00%,31.97%