Rambus gets its day in antitrust case in less than 2 weeks now. If Rambus prevails, it could net $13B in damages. If one stops to read the facts now in evidence (www.rambus.org), a Rambus win does not seem far fetched. What is more likely is a global settlement, likely on Rambus' terms, as Rambus has no motivation to sell out cheap as they arguably did with Samsung.
Many have made money shorting Rambus in the past. I don't think now is the time, as Rambus has waited 7 years to get this case to court, which now appears inevitable. But anything can happen.