I applied to Chimera Securities a few days ago, Trillium Trading last week, and SIG a couple of weeks ago. Nobody has contacted me back yet. Who should I contact next? Is it smart to contact alumni on Linkedin who work for these companies? Should I upgrade to the premium account for $30 and contact the recruitment manager via Inmail? What should I say? It appears that there are only a few quality firms in my area (NYC) and I want to maximize my chances of getting an interview at each of them. Thank you.