Three:

2015 CAAD10 for training and racing. Picked this one up in the middle of January and just put my 1050th mile on it.
Cannondale Quick, couple of years old, for when I go back home to visit and don't want to lug my CAAD10 8 hours on an Amtrak train (this used to be my one and only bike before the beginning of this school year). And for adventures.
Campus bike, a GMC Denali, rusted, 4-6cm too big for me, 7 speed, with streamers on the ends. This one's for leaving locked up in sketchy areas (or at least as sketchy as the Santa Barbara region gets).

Between the Cannondales I can get around pretty much anywhere, so this should be the lineup for at least a little while more.