Ariad's current market cap is ~$700,000,000.
Back in 2000, Ariad had 22,000,000 shares outstanding. At $40/share, ARIA would have been valued at $880,000,000.
So, basically, in 2011, Ariad at $5.25, is very close to 1999-2000 Ariad at $40.
Dilution. Sure is a killer.