The student-managed investment fund class I teach is fortunate to be in a trading room with a lot of resources - because of a prominent alumni, we have access to everything from analyst reports to trade and quote data. But for those who don't have these resources, check out Tickerpedia - it has analyst forecasts, recommendations, SEC filings, a neat chart of ratios from various sources, and much more.
It's interesting how much the reported ratios change by data source. As one example, for GATX corp, the reported operating margin (trailing 12 months) ranged from 18.92% (reported on Reuters) to 46.7% (on Marketwatch).
HT: Jim Mahar at Finance Professor