I bought INO last week. It is fixing to explode up this week if you go by the the crowded 24/7 message board at yahoo.
I missed out on INO, but bought some call options on GILD that have done pretty well so far. INO, though, has been spectacular - 340% in one month!
Sounds like within two to four weeks we should have some idea if any of the vaccines being tried out work.