Changes to Regulation SHO Threshold Security List (Trade Date - 04-20-07)

Additions:
AENS
CREE
DAQCE
DNAG
DRRAQ
DYIHY
IMJX
MMCY
MSMWE
PARL
SFNN
USNA
Subtractions:
ACEN
DOUBF
FORD
GFCI
NHYB
NWACQ
RAME
TGEN
VERT
WTSHF
ZMSFF