JJ, not sure if you are still looking at playing broker upgrades or downgrades. If so, I get two daily reports from Goldman Sachs via Charles Schwab. The reports list upgrades, downgrades, earnings revisions, etc. I assume they send them since I am a client, but you may want to check the site and see if you can get them sent without an account.
If you can't get them, and are still interested in this, shoot me an email and I will forward a few days morning/evening reports your way. This would let you see if you can do anything with them.
Regards,