Notice inaezsat29cents pumped the livingcrap out of it for a couple months and then disappeared after taking enough of a shltciken
They don't unless they release some miraculous news at the conference to coincide with some miraculous pr the same day. Bio companies including AEZS attend multiple Conferences every year.
Go to the Nasdaq site and click on Institutional Holdings for AEZS. It's all there, who bought, who sold and the volume of shares.
Here's a post, but no links to verify the bank and investment firms buying this last round of financing.